07326189f8
- Add comprehensive ADC reading functions (IBUS, IBAT, VBUS, VPMID, VBAT, VSYS, TS, TDIE) - Implement proper 2's complement conversion for signed values (IBAT, TDIE) - Add real-time ADC monitoring in test sketch (1-second intervals) - Include die temperature measurement with 0.5°C resolution - Hardware tested with BQ25628E showing correct register access and conversions 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
1356 lines
No EOL
50 KiB
C++
1356 lines
No EOL
50 KiB
C++
/*!
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* @file Adafruit_BQ25628E.cpp
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*
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* @mainpage Adafruit BQ25628E I2C Battery Charger
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*
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* @section intro_sec Introduction
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*
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* This is a library for the BQ25628E I2C Battery Charger
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*
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* Designed specifically to work with the Adafruit BQ25628E Breakout
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* ----> http://www.adafruit.com/products/
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*
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* Pick one up today in the adafruit shop!
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*
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* These chips use I2C to communicate, 2 pins are required to interface.
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*
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* Adafruit invests time and resources providing this open source code,
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* please support Adafruit and open-source hardware by purchasing products
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* from Adafruit!
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*
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* @section author Author
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*
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* Limor 'ladyada' Fried with assistance from Claude Code
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*
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* @section license License
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*
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* MIT (see license.txt)
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*/
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#include "Adafruit_BQ25628E.h"
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/*!
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* @brief Instantiates a new BQ25628E class
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*/
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Adafruit_BQ25628E::Adafruit_BQ25628E() {}
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/*!
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* @brief Cleans up the BQ25628E
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*/
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Adafruit_BQ25628E::~Adafruit_BQ25628E() {
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if (i2c_dev) {
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delete i2c_dev;
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}
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}
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/*!
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* @brief Sets up the hardware and initializes I2C
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* @param i2c_addr
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* The I2C address to be used.
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* @param wire
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* The Wire object to be used for I2C connections.
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* @return True if initialization was successful, otherwise false.
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*/
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bool Adafruit_BQ25628E::begin(uint8_t i2c_addr, TwoWire *wire) {
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if (i2c_dev) {
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delete i2c_dev;
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}
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i2c_dev = new Adafruit_I2CDevice(i2c_addr, wire);
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if (!i2c_dev->begin()) {
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return false;
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}
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// Verify chip connection by reading part information register
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Adafruit_BusIO_Register part_info_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_PART_INFORMATION);
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uint8_t part_info = part_info_reg.read();
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// Check for valid BQ25628E part ID (0x22)
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if (part_info != 0x22) {
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return false;
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}
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return true;
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}
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/*!
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* @brief Sets the charge current limit
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* @param current_a
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* Current in Amps (0.04A to 2.0A in 0.04A steps)
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* @return True if successful, otherwise false.
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*/
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bool Adafruit_BQ25628E::setChargeCurrentLimitA(float current_a) {
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// Convert current to register value: ICHG = (current_a - 0.04) / 0.04 + 1
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// Range: 40mA-2000mA (1h-32h), so offset by 1
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uint8_t ichg_value = (uint8_t)((current_a - 0.04f) / 0.04f + 1);
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// Clamp to valid range (1-50, where 50 = 32h)
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if (ichg_value < 1) {
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ichg_value = 1;
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}
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if (ichg_value > 50) {
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ichg_value = 50;
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}
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register charge_current_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_CURRENT_LIMIT, 2, LSBFIRST);
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// Create register bits object for ICHG field (bits 10:5, 6 bits, shift by 5)
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Adafruit_BusIO_RegisterBits ichg_bits = Adafruit_BusIO_RegisterBits(&charge_current_reg, 6, 5);
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return ichg_bits.write(ichg_value);
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}
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/*!
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* @brief Gets the charge current limit
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* @return Current limit in Amps
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*/
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float Adafruit_BQ25628E::getChargeCurrentLimitA() {
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register charge_current_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_CURRENT_LIMIT, 2, LSBFIRST);
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// Create register bits object for ICHG field (bits 10:5, 6 bits, shift by 5)
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Adafruit_BusIO_RegisterBits ichg_bits = Adafruit_BusIO_RegisterBits(&charge_current_reg, 6, 5);
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uint8_t ichg_value = ichg_bits.read();
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// Convert register value to current: current_a = (ICHG - 1) * 0.04 + 0.04
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return (ichg_value - 1) * 0.04f + 0.04f;
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}
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/*!
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* @brief Sets the charge voltage limit
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* @param voltage_v
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* Voltage in Volts (3.5V to 4.8V in 0.01V steps)
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* @return True if successful, otherwise false.
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*/
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bool Adafruit_BQ25628E::setChargeVoltageLimitV(float voltage_v) {
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// Convert voltage to mV and then to register value
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uint16_t voltage_mv = (uint16_t)(voltage_v * 1000);
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uint16_t vreg_value = voltage_mv / 10;
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// Clamp to valid range (350-480 for 3.5V-4.8V)
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if (vreg_value < 350) {
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vreg_value = 350;
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}
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if (vreg_value > 480) {
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vreg_value = 480;
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}
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register charge_voltage_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_VOLTAGE_LIMIT, 2, LSBFIRST);
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// Create register bits object for VREG field (bits 11:3, 9 bits, shift by 3)
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Adafruit_BusIO_RegisterBits vreg_bits = Adafruit_BusIO_RegisterBits(&charge_voltage_reg, 9, 3);
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return vreg_bits.write(vreg_value);
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}
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/*!
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* @brief Gets the charge voltage limit
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* @return Voltage limit in Volts
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*/
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float Adafruit_BQ25628E::getChargeVoltageLimitV() {
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register charge_voltage_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_VOLTAGE_LIMIT, 2, LSBFIRST);
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// Create register bits object for VREG field (bits 11:3, 9 bits, shift by 3)
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Adafruit_BusIO_RegisterBits vreg_bits = Adafruit_BusIO_RegisterBits(&charge_voltage_reg, 9, 3);
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uint16_t vreg_value = vreg_bits.read();
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// Convert register value to voltage: voltage_v = vreg_value * 0.01
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return vreg_value * 0.01f;
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}
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/*!
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* @brief Sets the input current limit
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* @param current_a
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* Current in Amps (0.1A to 3.2A in 0.02A steps)
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* @return True if successful, otherwise false.
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*/
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bool Adafruit_BQ25628E::setInputCurrentLimitA(float current_a) {
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// Convert current to mA and then to register value
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uint16_t current_ma = (uint16_t)(current_a * 1000);
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uint8_t iindpm_value = current_ma / 20;
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// Clamp to valid range (5-160 for 0.1A-3.2A)
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if (iindpm_value < 5) {
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iindpm_value = 5;
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}
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if (iindpm_value > 160) {
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iindpm_value = 160;
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}
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register input_current_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_INPUT_CURRENT_LIMIT, 2, LSBFIRST);
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// Create register bits object for IINDPM field (8 bits, shift by 4)
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Adafruit_BusIO_RegisterBits iindpm_bits = Adafruit_BusIO_RegisterBits(&input_current_reg, 8, 4);
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return iindpm_bits.write(iindpm_value);
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}
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/*!
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* @brief Gets the input current limit
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* @return Current limit in Amps
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*/
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float Adafruit_BQ25628E::getInputCurrentLimitA() {
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register input_current_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_INPUT_CURRENT_LIMIT, 2, LSBFIRST);
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// Create register bits object for IINDPM field (8 bits, shift by 4)
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Adafruit_BusIO_RegisterBits iindpm_bits = Adafruit_BusIO_RegisterBits(&input_current_reg, 8, 4);
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uint8_t iindpm_value = iindpm_bits.read();
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// Convert register value to current: current_a = iindpm_value * 0.02
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return iindpm_value * 0.02f;
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}
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/*!
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* @brief Sets the input voltage limit
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* @param voltage_v
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* Voltage in Volts (3.8V to 16.8V in 0.04V steps)
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* @return True if successful, otherwise false.
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*/
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bool Adafruit_BQ25628E::setInputVoltageLimitV(float voltage_v) {
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// Convert voltage to mV and then to register value
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uint16_t voltage_mv = (uint16_t)(voltage_v * 1000);
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uint16_t vindpm_value = voltage_mv / 40;
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// Clamp to valid range (95-420 for 3.8V-16.8V)
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if (vindpm_value < 95) {
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vindpm_value = 95;
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}
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if (vindpm_value > 420) {
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vindpm_value = 420;
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}
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register input_voltage_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_INPUT_VOLTAGE_LIMIT, 2, LSBFIRST);
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// Create register bits object for VINDPM field (9 bits, shift by 5)
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Adafruit_BusIO_RegisterBits vindpm_bits = Adafruit_BusIO_RegisterBits(&input_voltage_reg, 9, 5);
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return vindpm_bits.write(vindpm_value);
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}
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/*!
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* @brief Gets the input voltage limit
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* @return Voltage limit in Volts
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*/
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float Adafruit_BQ25628E::getInputVoltageLimitV() {
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register input_voltage_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_INPUT_VOLTAGE_LIMIT, 2, LSBFIRST);
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// Create register bits object for VINDPM field (9 bits, shift by 5)
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Adafruit_BusIO_RegisterBits vindpm_bits = Adafruit_BusIO_RegisterBits(&input_voltage_reg, 9, 5);
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uint16_t vindpm_value = vindpm_bits.read();
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// Convert register value to voltage: voltage_v = vindpm_value * 0.04
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return vindpm_value * 0.04f;
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}
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/*!
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* @brief Sets the minimal system voltage
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* @param voltage_v
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* Voltage in Volts (2.56V to 3.84V in 0.08V steps)
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* @return True if successful, otherwise false.
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*/
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bool Adafruit_BQ25628E::setMinimalSystemVoltageV(float voltage_v) {
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// Convert voltage to mV and then to register value
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uint16_t voltage_mv = (uint16_t)(voltage_v * 1000);
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uint8_t vsysmin_value = voltage_mv / 80;
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// Clamp to valid range (32-48 for 2.56V-3.84V)
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if (vsysmin_value < 32) {
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vsysmin_value = 32;
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}
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if (vsysmin_value > 48) {
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vsysmin_value = 48;
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}
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register system_voltage_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_MINIMAL_SYSTEM_VOLTAGE, 2, LSBFIRST);
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// Create register bits object for VSYSMIN field (6 bits, shift by 6)
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Adafruit_BusIO_RegisterBits vsysmin_bits = Adafruit_BusIO_RegisterBits(&system_voltage_reg, 6, 6);
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return vsysmin_bits.write(vsysmin_value);
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}
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/*!
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* @brief Gets the minimal system voltage
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* @return Voltage in Volts
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*/
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float Adafruit_BQ25628E::getMinimalSystemVoltageV() {
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register system_voltage_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_MINIMAL_SYSTEM_VOLTAGE, 2, LSBFIRST);
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// Create register bits object for VSYSMIN field (6 bits, shift by 6)
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Adafruit_BusIO_RegisterBits vsysmin_bits = Adafruit_BusIO_RegisterBits(&system_voltage_reg, 6, 6);
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uint8_t vsysmin_value = vsysmin_bits.read();
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// Convert register value to voltage: voltage_v = vsysmin_value * 0.08
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return vsysmin_value * 0.08f;
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}
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/*!
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* @brief Sets the precharge current limit
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* @param current_a
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* Current in Amps (0.01A to 0.31A in 0.01A steps)
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* @return True if successful, otherwise false.
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*/
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bool Adafruit_BQ25628E::setPrechargeCurrentLimitA(float current_a) {
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// Convert current to mA and then to register value
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uint16_t current_ma = (uint16_t)(current_a * 1000);
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uint8_t iprechg_value = current_ma / 10;
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// Clamp to valid range (1-31 for 0.01A-0.31A)
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if (iprechg_value < 1) {
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iprechg_value = 1;
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}
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if (iprechg_value > 31) {
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iprechg_value = 31;
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}
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register precharge_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_PRECHARGE_CONTROL, 2, LSBFIRST);
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// Create register bits object for IPRECHG field (5 bits, shift by 3)
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Adafruit_BusIO_RegisterBits iprechg_bits = Adafruit_BusIO_RegisterBits(&precharge_reg, 5, 3);
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return iprechg_bits.write(iprechg_value);
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}
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/*!
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* @brief Gets the precharge current limit
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* @return Current limit in Amps
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*/
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float Adafruit_BQ25628E::getPrechargeCurrentLimitA() {
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register precharge_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_PRECHARGE_CONTROL, 2, LSBFIRST);
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// Create register bits object for IPRECHG field (5 bits, shift by 3)
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Adafruit_BusIO_RegisterBits iprechg_bits = Adafruit_BusIO_RegisterBits(&precharge_reg, 5, 3);
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uint8_t iprechg_value = iprechg_bits.read();
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// Convert register value to current: current_a = iprechg_value * 0.01
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return iprechg_value * 0.01f;
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}
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/*!
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* @brief Sets the termination current threshold
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* @param current_a
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* Current in Amps (0.005A to 0.31A in 0.005A steps)
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* @return True if successful, otherwise false.
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*/
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bool Adafruit_BQ25628E::setTerminationCurrentThresholdA(float current_a) {
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// Convert current to mA and then to register value
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uint16_t current_ma = (uint16_t)(current_a * 1000);
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uint8_t iterm_value = current_ma / 5;
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// Clamp to valid range (1-62 for 0.005A-0.31A)
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if (iterm_value < 1) {
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iterm_value = 1;
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}
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if (iterm_value > 62) {
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iterm_value = 62;
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}
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register termination_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_TERMINATION_CONTROL, 2, LSBFIRST);
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// Create register bits object for ITERM field (6 bits, shift by 2)
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Adafruit_BusIO_RegisterBits iterm_bits = Adafruit_BusIO_RegisterBits(&termination_reg, 6, 2);
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return iterm_bits.write(iterm_value);
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}
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/*!
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* @brief Gets the termination current threshold
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* @return Current threshold in Amps
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*/
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float Adafruit_BQ25628E::getTerminationCurrentThresholdA() {
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// Create register object (16-bit register, little endian)
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Adafruit_BusIO_Register termination_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_TERMINATION_CONTROL, 2, LSBFIRST);
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// Create register bits object for ITERM field (6 bits, shift by 2)
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Adafruit_BusIO_RegisterBits iterm_bits = Adafruit_BusIO_RegisterBits(&termination_reg, 6, 2);
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uint8_t iterm_value = iterm_bits.read();
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// Convert register value to current: current_a = iterm_value * 0.005
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return iterm_value * 0.005f;
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}
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/*!
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* @brief Sets the trickle charging current
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* @param use_40ma
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* True for 40mA trickle current, false for 10mA trickle current
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* @return True if successful, otherwise false.
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*/
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bool Adafruit_BQ25628E::setTrickleCurrent(bool use_40ma) {
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Adafruit_BusIO_Register charge_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_CONTROL, 1);
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Adafruit_BusIO_RegisterBits itrickle_bit = Adafruit_BusIO_RegisterBits(&charge_control_reg, 1, 5);
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return itrickle_bit.write(use_40ma ? 1 : 0);
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}
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/*!
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* @brief Gets the trickle charging current setting
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* @return True if 40mA trickle current, false if 10mA trickle current
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*/
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bool Adafruit_BQ25628E::getTrickleCurrent() {
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Adafruit_BusIO_Register charge_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_CONTROL, 1);
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Adafruit_BusIO_RegisterBits itrickle_bit = Adafruit_BusIO_RegisterBits(&charge_control_reg, 1, 5);
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return itrickle_bit.read() == 1;
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}
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/*!
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* @brief Sets charge termination enable/disable
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* @param enable
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* True to enable termination, false to disable
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* @return True if successful, otherwise false.
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*/
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bool Adafruit_BQ25628E::setEnableTermination(bool enable) {
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Adafruit_BusIO_Register charge_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_CONTROL, 1);
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Adafruit_BusIO_RegisterBits en_term_bit = Adafruit_BusIO_RegisterBits(&charge_control_reg, 1, 2);
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return en_term_bit.write(enable ? 1 : 0);
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}
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/*!
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* @brief Gets charge termination enable/disable status
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* @return True if termination enabled, false if disabled
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*/
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bool Adafruit_BQ25628E::getEnableTermination() {
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Adafruit_BusIO_Register charge_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits en_term_bit = Adafruit_BusIO_RegisterBits(&charge_control_reg, 1, 2);
|
|
|
|
return en_term_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets VINDPM battery voltage tracking
|
|
* @param enable
|
|
* True for VBAT + 400mV tracking, false for register-only VINDPM
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setVINDPMbatTrack(bool enable) {
|
|
Adafruit_BusIO_Register charge_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits vindpm_bat_track_bit = Adafruit_BusIO_RegisterBits(&charge_control_reg, 1, 1);
|
|
|
|
return vindpm_bat_track_bit.write(enable ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets VINDPM battery voltage tracking status
|
|
* @return True if VBAT + 400mV tracking enabled, false if register-only VINDPM
|
|
*/
|
|
bool Adafruit_BQ25628E::getVINDPMbatTrack() {
|
|
Adafruit_BusIO_Register charge_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits vindpm_bat_track_bit = Adafruit_BusIO_RegisterBits(&charge_control_reg, 1, 1);
|
|
|
|
return vindpm_bat_track_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets charge timer enable/disable
|
|
* @param enable
|
|
* True to enable safety timers, false to disable
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setEnableSafetyTimers(bool enable) {
|
|
Adafruit_BusIO_Register timer_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_TIMER_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits en_safety_tmrs_bit = Adafruit_BusIO_RegisterBits(&timer_control_reg, 1, 2);
|
|
|
|
return en_safety_tmrs_bit.write(enable ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets charge timer enable/disable status
|
|
* @return True if safety timers enabled, false if disabled
|
|
*/
|
|
bool Adafruit_BQ25628E::getEnableSafetyTimers() {
|
|
Adafruit_BusIO_Register timer_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_TIMER_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits en_safety_tmrs_bit = Adafruit_BusIO_RegisterBits(&timer_control_reg, 1, 2);
|
|
|
|
return en_safety_tmrs_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets precharge timer setting
|
|
* @param short_timer
|
|
* True for 0.62 hours, false for 2.5 hours (default)
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setPrechargeTimer(bool short_timer) {
|
|
Adafruit_BusIO_Register timer_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_TIMER_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits prechg_tmr_bit = Adafruit_BusIO_RegisterBits(&timer_control_reg, 1, 1);
|
|
|
|
return prechg_tmr_bit.write(short_timer ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets precharge timer setting
|
|
* @return True if 0.62 hours, false if 2.5 hours
|
|
*/
|
|
bool Adafruit_BQ25628E::getPrechargeTimer() {
|
|
Adafruit_BusIO_Register timer_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_TIMER_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits prechg_tmr_bit = Adafruit_BusIO_RegisterBits(&timer_control_reg, 1, 1);
|
|
|
|
return prechg_tmr_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets fast charge timer setting
|
|
* @param long_timer
|
|
* True for 28 hours, false for 14.5 hours (default)
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setFastchargeTimer(bool long_timer) {
|
|
Adafruit_BusIO_Register timer_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_TIMER_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits chg_tmr_bit = Adafruit_BusIO_RegisterBits(&timer_control_reg, 1, 0);
|
|
|
|
return chg_tmr_bit.write(long_timer ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets fast charge timer setting
|
|
* @return True if 28 hours, false if 14.5 hours
|
|
*/
|
|
bool Adafruit_BQ25628E::getFastchargeTimer() {
|
|
Adafruit_BusIO_Register timer_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGE_TIMER_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits chg_tmr_bit = Adafruit_BusIO_RegisterBits(&timer_control_reg, 1, 0);
|
|
|
|
return chg_tmr_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets auto battery discharge during battery OVP
|
|
* @param enable
|
|
* True to enable auto discharge during battery OVP, false to disable
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setAutoBatteryDischarge(bool enable) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits en_auto_ibatdis_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 7);
|
|
|
|
return en_auto_ibatdis_bit.write(enable ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets auto battery discharge setting
|
|
* @return True if auto discharge enabled, false if disabled
|
|
*/
|
|
bool Adafruit_BQ25628E::getAutoBatteryDischarge() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits en_auto_ibatdis_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 7);
|
|
|
|
return en_auto_ibatdis_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Forces battery discharge current (~30mA)
|
|
* @param enable
|
|
* True to force discharge current, false for idle
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setForceBatteryDischarge(bool enable) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits force_ibatdis_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 6);
|
|
|
|
return force_ibatdis_bit.write(enable ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets forced battery discharge status
|
|
* @return True if discharge current forced, false if idle
|
|
*/
|
|
bool Adafruit_BQ25628E::getForceBatteryDischarge() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits force_ibatdis_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 6);
|
|
|
|
return force_ibatdis_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets charger enable/disable
|
|
* @param enable
|
|
* True to enable charging, false to disable
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setEnableCharging(bool enable) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits en_chg_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 5);
|
|
|
|
return en_chg_bit.write(enable ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets charger enable status
|
|
* @return True if charging enabled, false if disabled
|
|
*/
|
|
bool Adafruit_BQ25628E::getEnableCharging() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits en_chg_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 5);
|
|
|
|
return en_chg_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets HIZ mode enable/disable
|
|
* @param enable
|
|
* True to enable HIZ mode, false to disable
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setHighZ(bool enable) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits en_hiz_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 4);
|
|
|
|
return en_hiz_bit.write(enable ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets HIZ mode status
|
|
* @return True if HIZ mode enabled, false if disabled
|
|
*/
|
|
bool Adafruit_BQ25628E::getHighZ() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits en_hiz_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 4);
|
|
|
|
return en_hiz_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Forces PMID discharge current (~30mA)
|
|
* @param enable
|
|
* True to force PMID discharge, false to disable
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setForcePMIDDischarge(bool enable) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits force_pmid_dis_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 3);
|
|
|
|
return force_pmid_dis_bit.write(enable ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets forced PMID discharge status
|
|
* @return True if PMID discharge forced, false if disabled
|
|
*/
|
|
bool Adafruit_BQ25628E::getForcePMIDDischarge() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits force_pmid_dis_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 3);
|
|
|
|
return force_pmid_dis_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Resets the I2C watchdog timer
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::resetWatchdog() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits wd_rst_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 2);
|
|
|
|
return wd_rst_bit.write(1);
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets watchdog timer setting
|
|
* @param setting
|
|
* Watchdog timer setting from bq25628e_watchdog_t enum
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setWatchdog(bq25628e_watchdog_t setting) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits watchdog_bits = Adafruit_BusIO_RegisterBits(&charger_control_reg, 2, 0);
|
|
|
|
return watchdog_bits.write((uint8_t)setting);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets watchdog timer setting
|
|
* @return Current watchdog timer setting
|
|
*/
|
|
bq25628e_watchdog_t Adafruit_BQ25628E::getWatchdog() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits watchdog_bits = Adafruit_BusIO_RegisterBits(&charger_control_reg, 2, 0);
|
|
|
|
return (bq25628e_watchdog_t)watchdog_bits.read();
|
|
}
|
|
|
|
/*!
|
|
* @brief Resets registers to default values and resets timer
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::reset() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_1, 1);
|
|
Adafruit_BusIO_RegisterBits reg_rst_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 7);
|
|
|
|
// Set reset bit
|
|
if (!reg_rst_bit.write(1)) {
|
|
return false;
|
|
}
|
|
|
|
// Wait for bit to clear (indicates reset complete)
|
|
uint32_t timeout = millis() + 1000; // 1 second timeout
|
|
while (millis() < timeout) {
|
|
if (reg_rst_bit.read() == 0) {
|
|
return true; // Reset completed
|
|
}
|
|
delay(1);
|
|
}
|
|
|
|
return false; // Timeout - reset may have failed
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets thermal regulation threshold
|
|
* @param temp_120c
|
|
* True for 120°C threshold, false for 60°C threshold
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setThermalRegulation(bool temp_120c) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_1, 1);
|
|
Adafruit_BusIO_RegisterBits treg_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 6);
|
|
|
|
return treg_bit.write(temp_120c ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets thermal regulation threshold setting
|
|
* @return True if 120°C threshold, false if 60°C threshold
|
|
*/
|
|
bool Adafruit_BQ25628E::getThermalRegulation() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_1, 1);
|
|
Adafruit_BusIO_RegisterBits treg_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 6);
|
|
|
|
return treg_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets converter switching frequency
|
|
* @param frequency
|
|
* Frequency setting from bq25628e_conv_freq_t enum
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setConverterFrequency(bq25628e_conv_freq_t frequency) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_1, 1);
|
|
Adafruit_BusIO_RegisterBits conv_freq_bits = Adafruit_BusIO_RegisterBits(&charger_control_reg, 2, 4);
|
|
|
|
return conv_freq_bits.write((uint8_t)frequency);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets converter switching frequency setting
|
|
* @return Current frequency setting
|
|
*/
|
|
bq25628e_conv_freq_t Adafruit_BQ25628E::getConverterFrequency() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_1, 1);
|
|
Adafruit_BusIO_RegisterBits conv_freq_bits = Adafruit_BusIO_RegisterBits(&charger_control_reg, 2, 4);
|
|
|
|
return (bq25628e_conv_freq_t)conv_freq_bits.read();
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets VBUS overvoltage protection threshold
|
|
* @param high_threshold
|
|
* True for 18.5V threshold, false for 6.3V threshold
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setVBUSOvervoltage(bool high_threshold) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_1, 1);
|
|
Adafruit_BusIO_RegisterBits vbus_ovp_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 0);
|
|
|
|
return vbus_ovp_bit.write(high_threshold ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets VBUS overvoltage protection threshold setting
|
|
* @return True if 18.5V threshold, false if 6.3V threshold
|
|
*/
|
|
bool Adafruit_BQ25628E::getVBUSOvervoltage() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_1, 1);
|
|
Adafruit_BusIO_RegisterBits vbus_ovp_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 0);
|
|
|
|
return vbus_ovp_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets BATFET control mode
|
|
* @param control
|
|
* BATFET control setting from bq25628e_batfet_ctrl_t enum
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setBATFETcontrol(bq25628e_batfet_ctrl_t control) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_2, 1);
|
|
Adafruit_BusIO_RegisterBits batfet_ctrl_bits = Adafruit_BusIO_RegisterBits(&charger_control_reg, 2, 0);
|
|
|
|
return batfet_ctrl_bits.write((uint8_t)control);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets BATFET control mode setting
|
|
* @return Current BATFET control setting
|
|
*/
|
|
bq25628e_batfet_ctrl_t Adafruit_BQ25628E::getBATFETcontrol() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_2, 1);
|
|
Adafruit_BusIO_RegisterBits batfet_ctrl_bits = Adafruit_BusIO_RegisterBits(&charger_control_reg, 2, 0);
|
|
|
|
return (bq25628e_batfet_ctrl_t)batfet_ctrl_bits.read();
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets battery discharge peak current protection
|
|
* @param peak_12a
|
|
* True for 12A peak current, false for 6A peak current
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setPeakBattDischarge(bool peak_12a) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_3, 1);
|
|
Adafruit_BusIO_RegisterBits ibat_pk_bits = Adafruit_BusIO_RegisterBits(&charger_control_reg, 2, 6);
|
|
|
|
return ibat_pk_bits.write(peak_12a ? 0b11 : 0b10);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets battery discharge peak current protection setting
|
|
* @return True if 12A peak current, false if 6A peak current
|
|
*/
|
|
bool Adafruit_BQ25628E::getPeakBattDischarge() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_3, 1);
|
|
Adafruit_BusIO_RegisterBits ibat_pk_bits = Adafruit_BusIO_RegisterBits(&charger_control_reg, 2, 6);
|
|
|
|
uint8_t value = ibat_pk_bits.read();
|
|
return (value == 0b11); // 11b = 12A, 10b = 6A
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets VBAT UVLO threshold
|
|
* @param low_threshold
|
|
* True for 1.8V UVLO/1.85V SHORT, false for 2.2V UVLO/2.05V SHORT
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setVBatUVLO(bool low_threshold) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_3, 1);
|
|
Adafruit_BusIO_RegisterBits vbat_uvlo_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 5);
|
|
|
|
return vbat_uvlo_bit.write(low_threshold ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets VBAT UVLO threshold setting
|
|
* @return True if 1.8V UVLO/1.85V SHORT, false if 2.2V UVLO/2.05V SHORT
|
|
*/
|
|
bool Adafruit_BQ25628E::getVBatUVLO() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_3, 1);
|
|
Adafruit_BusIO_RegisterBits vbat_uvlo_bit = Adafruit_BusIO_RegisterBits(&charger_control_reg, 1, 5);
|
|
|
|
return vbat_uvlo_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets charge rate for fast charge stage
|
|
* @param rate
|
|
* Charge rate setting from bq25628e_charge_rate_t enum
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setChargeRate(bq25628e_charge_rate_t rate) {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_3, 1);
|
|
Adafruit_BusIO_RegisterBits chg_rate_bits = Adafruit_BusIO_RegisterBits(&charger_control_reg, 2, 0);
|
|
|
|
return chg_rate_bits.write((uint8_t)rate);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets charge rate setting
|
|
* @return Current charge rate setting
|
|
*/
|
|
bq25628e_charge_rate_t Adafruit_BQ25628E::getChargeRate() {
|
|
Adafruit_BusIO_Register charger_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_CONTROL_3, 1);
|
|
Adafruit_BusIO_RegisterBits chg_rate_bits = Adafruit_BusIO_RegisterBits(&charger_control_reg, 2, 0);
|
|
|
|
return (bq25628e_charge_rate_t)chg_rate_bits.read();
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets thermistor feedback ignore
|
|
* @param ignore
|
|
* True to ignore TS feedback, false to use TS feedback
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setIgnoreThermistor(bool ignore) {
|
|
Adafruit_BusIO_Register ntc_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_NTC_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits ts_ignore_bit = Adafruit_BusIO_RegisterBits(&ntc_control_reg, 1, 7);
|
|
|
|
return ts_ignore_bit.write(ignore ? 1 : 0);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets thermistor feedback ignore setting
|
|
* @return True if TS feedback ignored, false if TS feedback used
|
|
*/
|
|
bool Adafruit_BQ25628E::getIgnoreThermistor() {
|
|
Adafruit_BusIO_Register ntc_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_NTC_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits ts_ignore_bit = Adafruit_BusIO_RegisterBits(&ntc_control_reg, 1, 7);
|
|
|
|
return ts_ignore_bit.read() == 1;
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets thermistor cool zone current setting
|
|
* @param setting
|
|
* Current setting from bq25628e_therm_curr_t enum
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setCoolThermistorCurrent(bq25628e_therm_curr_t setting) {
|
|
Adafruit_BusIO_Register ntc_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_NTC_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits ts_iset_cool_bits = Adafruit_BusIO_RegisterBits(&ntc_control_reg, 2, 0);
|
|
|
|
return ts_iset_cool_bits.write((uint8_t)setting);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets thermistor cool zone current setting
|
|
* @return Current cool zone setting
|
|
*/
|
|
bq25628e_therm_curr_t Adafruit_BQ25628E::getCoolThermistorCurrent() {
|
|
Adafruit_BusIO_Register ntc_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_NTC_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits ts_iset_cool_bits = Adafruit_BusIO_RegisterBits(&ntc_control_reg, 2, 0);
|
|
|
|
return (bq25628e_therm_curr_t)ts_iset_cool_bits.read();
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets thermistor warm zone current setting
|
|
* @param setting
|
|
* Current setting from bq25628e_therm_curr_t enum
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setWarmThermistorCurrent(bq25628e_therm_curr_t setting) {
|
|
Adafruit_BusIO_Register ntc_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_NTC_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits ts_iset_warm_bits = Adafruit_BusIO_RegisterBits(&ntc_control_reg, 2, 2);
|
|
|
|
return ts_iset_warm_bits.write((uint8_t)setting);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets thermistor warm zone current setting
|
|
* @return Current warm zone setting
|
|
*/
|
|
bq25628e_therm_curr_t Adafruit_BQ25628E::getWarmThermistorCurrent() {
|
|
Adafruit_BusIO_Register ntc_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_NTC_CONTROL_0, 1);
|
|
Adafruit_BusIO_RegisterBits ts_iset_warm_bits = Adafruit_BusIO_RegisterBits(&ntc_control_reg, 2, 2);
|
|
|
|
return (bq25628e_therm_curr_t)ts_iset_warm_bits.read();
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets combined charger status flags from both status registers
|
|
* @return 16-bit status flags: bits 15:8 = REG0x1E, bits 7:0 = REG0x1D
|
|
*/
|
|
uint16_t Adafruit_BQ25628E::getChargerStatusFlags() {
|
|
// Read REG0x1D (Charger Status 0)
|
|
Adafruit_BusIO_Register status0_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_STATUS_0, 1);
|
|
uint8_t status0 = status0_reg.read();
|
|
|
|
// Read REG0x1E (Charger Status 1)
|
|
Adafruit_BusIO_Register status1_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_STATUS_1, 1);
|
|
uint8_t status1 = status1_reg.read();
|
|
|
|
// Combine into 16-bit value: high byte = status1, low byte = status0
|
|
return ((uint16_t)status1 << 8) | status0;
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets fault status flags from REG0x1F
|
|
* @return 8-bit fault status flags from REG0x1F_FAULT_Status_0
|
|
*/
|
|
uint8_t Adafruit_BQ25628E::getFaultStatusFlags() {
|
|
// Read REG0x1F (FAULT Status 0)
|
|
Adafruit_BusIO_Register fault_status_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_FAULT_STATUS_0, 1);
|
|
|
|
return fault_status_reg.read();
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets combined charger flag registers (clears flags on read)
|
|
* @return 16-bit flag values: bits 15:8 = REG0x21, bits 7:0 = REG0x20
|
|
* @note Reading this function clears all flag bits automatically
|
|
*/
|
|
uint16_t Adafruit_BQ25628E::getChargerFlags() {
|
|
// Read REG0x20 (Charger Flag 0) - clears flags on read
|
|
Adafruit_BusIO_Register flag0_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_FLAG_0, 1);
|
|
uint8_t flag0 = flag0_reg.read();
|
|
|
|
// Read REG0x21 (Charger Flag 1) - clears flags on read
|
|
Adafruit_BusIO_Register flag1_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_FLAG_1, 1);
|
|
uint8_t flag1 = flag1_reg.read();
|
|
|
|
// Combine into 16-bit value: high byte = flag1, low byte = flag0
|
|
return ((uint16_t)flag1 << 8) | flag0;
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets fault flag register (clears flags on read)
|
|
* @return 8-bit fault flag values from REG0x22_FAULT_Flag_0
|
|
* @note Reading this function clears all fault flag bits automatically
|
|
*/
|
|
uint8_t Adafruit_BQ25628E::getFaultFlags() {
|
|
// Read REG0x22 (FAULT Flag 0) - clears flags on read
|
|
Adafruit_BusIO_Register fault_flag_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_FAULT_FLAG_0, 1);
|
|
|
|
return fault_flag_reg.read();
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets interrupt mask for all interrupt sources
|
|
* @param mask
|
|
* 32-bit mask value (1 = disable interrupt, 0 = enable interrupt)
|
|
* @return True if successful, otherwise false.
|
|
* @note Use BQ25628E_INT_MASK_* defines to construct the mask
|
|
*/
|
|
bool Adafruit_BQ25628E::setInterruptMask(uint32_t mask) {
|
|
// Extract individual register values from 32-bit mask
|
|
// Mask0 (REG0x23): bits 6:0 (ADC_DONE, TREG, VSYS, IINDPM, VINDPM, SAFETY_TMR, WD)
|
|
uint8_t mask0 = (mask >> 0) & 0x7F;
|
|
|
|
// Mask1 (REG0x24): bits 3,0 (CHG=bit11, VBUS=bit8)
|
|
uint8_t mask1 = 0;
|
|
if (mask & BQ25628E_INT_MASK_VBUS) mask1 |= BQ25628E_MASK1_VBUS_MASK;
|
|
if (mask & BQ25628E_INT_MASK_CHG) mask1 |= BQ25628E_MASK1_CHG_MASK;
|
|
|
|
// FMask (REG0x25): bits 7,6,5,3,0 (VBUS_FAULT, BAT_FAULT, SYS_FAULT, TSHUT, TS)
|
|
uint8_t fmask = 0;
|
|
if (mask & BQ25628E_INT_MASK_TS) fmask |= BQ25628E_FMASK_TS_MASK;
|
|
if (mask & BQ25628E_INT_MASK_TSHUT) fmask |= BQ25628E_FMASK_TSHUT_MASK;
|
|
if (mask & BQ25628E_INT_MASK_SYS_FAULT) fmask |= BQ25628E_FMASK_SYS_FAULT_MASK;
|
|
if (mask & BQ25628E_INT_MASK_BAT_FAULT) fmask |= BQ25628E_FMASK_BAT_FAULT_MASK;
|
|
if (mask & BQ25628E_INT_MASK_VBUS_FAULT) fmask |= BQ25628E_FMASK_VBUS_FAULT_MASK;
|
|
|
|
// Write to all three mask registers
|
|
Adafruit_BusIO_Register mask0_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_MASK_0, 1);
|
|
Adafruit_BusIO_Register mask1_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_MASK_1, 1);
|
|
Adafruit_BusIO_Register fmask_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_FAULT_MASK_0, 1);
|
|
|
|
return mask0_reg.write(mask0) && mask1_reg.write(mask1) && fmask_reg.write(fmask);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets interrupt mask for all interrupt sources
|
|
* @return 32-bit mask value (1 = interrupt disabled, 0 = interrupt enabled)
|
|
*/
|
|
uint32_t Adafruit_BQ25628E::getInterruptMask() {
|
|
// Read all three mask registers
|
|
Adafruit_BusIO_Register mask0_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_MASK_0, 1);
|
|
Adafruit_BusIO_Register mask1_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_CHARGER_MASK_1, 1);
|
|
Adafruit_BusIO_Register fmask_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_FAULT_MASK_0, 1);
|
|
|
|
uint8_t mask0 = mask0_reg.read();
|
|
uint8_t mask1 = mask1_reg.read();
|
|
uint8_t fmask = fmask_reg.read();
|
|
|
|
// Combine into 32-bit mask
|
|
uint32_t combined_mask = 0;
|
|
|
|
// Mask0 (REG0x23): bits 6:0 map directly to bits 6:0
|
|
combined_mask |= (mask0 & 0x7F);
|
|
|
|
// Mask1 (REG0x24): bits 3,0 map to specific bit positions
|
|
if (mask1 & BQ25628E_MASK1_VBUS_MASK) combined_mask |= BQ25628E_INT_MASK_VBUS;
|
|
if (mask1 & BQ25628E_MASK1_CHG_MASK) combined_mask |= BQ25628E_INT_MASK_CHG;
|
|
|
|
// FMask (REG0x25): bits 7,6,5,3,0 map to specific bit positions
|
|
if (fmask & BQ25628E_FMASK_TS_MASK) combined_mask |= BQ25628E_INT_MASK_TS;
|
|
if (fmask & BQ25628E_FMASK_TSHUT_MASK) combined_mask |= BQ25628E_INT_MASK_TSHUT;
|
|
if (fmask & BQ25628E_FMASK_SYS_FAULT_MASK) combined_mask |= BQ25628E_INT_MASK_SYS_FAULT;
|
|
if (fmask & BQ25628E_FMASK_BAT_FAULT_MASK) combined_mask |= BQ25628E_INT_MASK_BAT_FAULT;
|
|
if (fmask & BQ25628E_FMASK_VBUS_FAULT_MASK) combined_mask |= BQ25628E_INT_MASK_VBUS_FAULT;
|
|
|
|
return combined_mask;
|
|
}
|
|
|
|
/*!
|
|
* @brief Enables or disables ADC conversion
|
|
* @param enable
|
|
* True to enable ADC, false to disable
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setADCEnable(bool enable) {
|
|
Adafruit_BusIO_Register adc_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_ADC_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits adc_enable = Adafruit_BusIO_RegisterBits(&adc_control_reg, 1, 7);
|
|
|
|
return adc_enable.write(enable);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets ADC enable status
|
|
* @return True if ADC is enabled, false otherwise
|
|
*/
|
|
bool Adafruit_BQ25628E::getADCEnable() {
|
|
Adafruit_BusIO_Register adc_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_ADC_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits adc_enable = Adafruit_BusIO_RegisterBits(&adc_control_reg, 1, 7);
|
|
|
|
return adc_enable.read();
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets ADC conversion mode
|
|
* @param one_shot
|
|
* True for one-shot conversion, false for continuous conversion
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setADCOneShot(bool one_shot) {
|
|
Adafruit_BusIO_Register adc_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_ADC_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits adc_rate = Adafruit_BusIO_RegisterBits(&adc_control_reg, 1, 6);
|
|
|
|
return adc_rate.write(one_shot);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets ADC conversion mode
|
|
* @return True if one-shot mode, false if continuous mode
|
|
*/
|
|
bool Adafruit_BQ25628E::getADCOneShot() {
|
|
Adafruit_BusIO_Register adc_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_ADC_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits adc_rate = Adafruit_BusIO_RegisterBits(&adc_control_reg, 1, 6);
|
|
|
|
return adc_rate.read();
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets ADC sample rate (bit resolution)
|
|
* @param sample_rate
|
|
* Sample rate setting (see bq25628e_adc_sample_t)
|
|
* @return True if successful, otherwise false.
|
|
*/
|
|
bool Adafruit_BQ25628E::setADCSampleRate(bq25628e_adc_sample_t sample_rate) {
|
|
Adafruit_BusIO_Register adc_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_ADC_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits adc_sample = Adafruit_BusIO_RegisterBits(&adc_control_reg, 2, 4);
|
|
|
|
return adc_sample.write(sample_rate);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets ADC sample rate setting
|
|
* @return Current sample rate setting (see bq25628e_adc_sample_t)
|
|
*/
|
|
bq25628e_adc_sample_t Adafruit_BQ25628E::getADCSampleRate() {
|
|
Adafruit_BusIO_Register adc_control_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_ADC_CONTROL, 1);
|
|
Adafruit_BusIO_RegisterBits adc_sample = Adafruit_BusIO_RegisterBits(&adc_control_reg, 2, 4);
|
|
|
|
return (bq25628e_adc_sample_t)adc_sample.read();
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets ADC function disable flags
|
|
* @param disable_flags
|
|
* Bitfield of ADC functions to disable (use BQ25628E_ADC_DIS_* flags)
|
|
* Setting a bit to 1 disables that ADC function
|
|
* Setting a bit to 0 enables that ADC function
|
|
* @return True if successful, otherwise false.
|
|
* @note Use BQ25628E_ADC_DIS_* defines to construct the disable_flags
|
|
*/
|
|
bool Adafruit_BQ25628E::setDisableADC(uint8_t disable_flags) {
|
|
Adafruit_BusIO_Register adc_func_disable_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_ADC_FUNCTION_DISABLE_0, 1);
|
|
|
|
return adc_func_disable_reg.write(disable_flags);
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets ADC function disable flags
|
|
* @return Bitfield of disabled ADC functions (1 = disabled, 0 = enabled)
|
|
* @note Use BQ25628E_ADC_DIS_* defines to check individual flags
|
|
*/
|
|
uint8_t Adafruit_BQ25628E::getDisableADC() {
|
|
Adafruit_BusIO_Register adc_func_disable_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_ADC_FUNCTION_DISABLE_0, 1);
|
|
|
|
return adc_func_disable_reg.read();
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets IBUS current measurement from ADC
|
|
* @return Current in Amperes (positive = from VBUS to PMID, negative = reverse)
|
|
* @note Requires ADC to be enabled. Returns 2's complement 15-bit value
|
|
* converted to float with 2mA resolution
|
|
*/
|
|
float Adafruit_BQ25628E::getIBUScurrent() {
|
|
// Read 16-bit IBUS ADC register (little endian)
|
|
Adafruit_BusIO_Register ibus_adc_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_IBUS_ADC, 2);
|
|
|
|
uint16_t raw_value = ibus_adc_reg.read();
|
|
|
|
// Extract 15-bit ADC value from bits 15:1 (shift right by 1)
|
|
uint16_t adc_15bit = raw_value >> 1;
|
|
|
|
// Convert from 15-bit 2's complement to signed 16-bit
|
|
int16_t signed_value;
|
|
if (adc_15bit & 0x4000) {
|
|
// Negative value - extend sign bit
|
|
signed_value = (int16_t)(adc_15bit | 0x8000);
|
|
} else {
|
|
// Positive value
|
|
signed_value = (int16_t)adc_15bit;
|
|
}
|
|
|
|
// Convert to Amperes: 2mA per step
|
|
return (float)signed_value * 0.002f;
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets IBAT current measurement from ADC
|
|
* @return Current in Amperes (positive = charging, negative = discharging)
|
|
* @note Requires ADC to be enabled. Returns 2's complement 14-bit value
|
|
* converted to float with 4mA resolution. Range: -7.5A to +4.0A
|
|
*/
|
|
float Adafruit_BQ25628E::getIBATcurrent() {
|
|
// Read 16-bit IBAT ADC register (little endian)
|
|
Adafruit_BusIO_Register ibat_adc_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_IBAT_ADC, 2);
|
|
|
|
uint16_t raw_value = ibat_adc_reg.read();
|
|
|
|
// Extract 14-bit ADC value from bits 15:2 (shift right by 2)
|
|
uint16_t adc_14bit = raw_value >> 2;
|
|
|
|
// Convert from 14-bit 2's complement to signed 16-bit
|
|
int16_t signed_value;
|
|
if (adc_14bit & 0x2000) {
|
|
// Negative value - extend sign bit
|
|
signed_value = (int16_t)(adc_14bit | 0xC000);
|
|
} else {
|
|
// Positive value
|
|
signed_value = (int16_t)adc_14bit;
|
|
}
|
|
|
|
// Convert to Amperes: 4mA per step
|
|
return (float)signed_value * 0.004f;
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets VBUS voltage measurement from ADC
|
|
* @return Voltage in Volts. Range: 0V to 18V
|
|
* @note Requires ADC to be enabled. 3.97mV resolution
|
|
*/
|
|
float Adafruit_BQ25628E::getVBUSvoltage() {
|
|
// Read 16-bit VBUS ADC register (little endian)
|
|
Adafruit_BusIO_Register vbus_adc_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_VBUS_ADC, 2);
|
|
|
|
uint16_t raw_value = vbus_adc_reg.read();
|
|
|
|
// Extract voltage value from bits 15:2 (shift right by 2)
|
|
uint16_t voltage_value = raw_value >> 2;
|
|
|
|
// Convert to Volts: 3.97mV per step
|
|
return (float)voltage_value * 0.00397f;
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets VPMID voltage measurement from ADC
|
|
* @return Voltage in Volts. Range: 0V to 18V
|
|
* @note Requires ADC to be enabled. 3.97mV resolution
|
|
*/
|
|
float Adafruit_BQ25628E::getVPMIDvoltage() {
|
|
// Read 16-bit VPMID ADC register (little endian)
|
|
Adafruit_BusIO_Register vpmid_adc_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_VPMID_ADC, 2);
|
|
|
|
uint16_t raw_value = vpmid_adc_reg.read();
|
|
|
|
// Extract voltage value from bits 15:2 (shift right by 2)
|
|
uint16_t voltage_value = raw_value >> 2;
|
|
|
|
// Convert to Volts: 3.97mV per step
|
|
return (float)voltage_value * 0.00397f;
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets VBAT voltage measurement from ADC
|
|
* @return Voltage in Volts. Range: 0V to 5.572V
|
|
* @note Requires ADC to be enabled. 1.99mV resolution
|
|
*/
|
|
float Adafruit_BQ25628E::getVBATvoltage() {
|
|
// Read 16-bit VBAT ADC register (little endian)
|
|
Adafruit_BusIO_Register vbat_adc_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_VBAT_ADC, 2);
|
|
|
|
uint16_t raw_value = vbat_adc_reg.read();
|
|
|
|
// Extract voltage value from bits 15:1 (shift right by 1)
|
|
uint16_t voltage_value = raw_value >> 1;
|
|
|
|
// Convert to Volts: 1.99mV per step
|
|
return (float)voltage_value * 0.00199f;
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets VSYS voltage measurement from ADC
|
|
* @return Voltage in Volts. Range: 0V to 5.572V
|
|
* @note Requires ADC to be enabled. 1.99mV resolution
|
|
*/
|
|
float Adafruit_BQ25628E::getVSYSvoltage() {
|
|
// Read 16-bit VSYS ADC register (little endian)
|
|
Adafruit_BusIO_Register vsys_adc_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_VSYS_ADC, 2);
|
|
|
|
uint16_t raw_value = vsys_adc_reg.read();
|
|
|
|
// Extract voltage value from bits 15:1 (shift right by 1)
|
|
uint16_t voltage_value = raw_value >> 1;
|
|
|
|
// Convert to Volts: 1.99mV per step
|
|
return (float)voltage_value * 0.00199f;
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets thermistor reading as percentage of bias reference
|
|
* @return Percentage (0-100%). Range: 0% to 98.31%
|
|
* @note Requires ADC to be enabled and TS pin bias reference active
|
|
* Uses bits 11:0 with 0.0961% resolution
|
|
*/
|
|
float Adafruit_BQ25628E::getThermistorPercent() {
|
|
// Read 16-bit TS ADC register (little endian)
|
|
Adafruit_BusIO_Register ts_adc_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_TS_ADC, 2);
|
|
|
|
uint16_t raw_value = ts_adc_reg.read();
|
|
|
|
// Extract 12-bit value from bits 11:0 (no shift needed)
|
|
uint16_t ts_value = raw_value & 0x0FFF;
|
|
|
|
// Convert to percentage: 0.0961% per step
|
|
return (float)ts_value * 0.0961f;
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets die temperature measurement from ADC
|
|
* @return Temperature in Celsius. Range: -40°C to +140°C
|
|
* @note Requires ADC to be enabled. Returns 2's complement 12-bit value
|
|
* with 0.5°C resolution using bits 11:0
|
|
*/
|
|
float Adafruit_BQ25628E::getDieTempC() {
|
|
// Read 16-bit TDIE ADC register (little endian)
|
|
Adafruit_BusIO_Register tdie_adc_reg = Adafruit_BusIO_Register(i2c_dev, BQ25628E_REG_TDIE_ADC, 2);
|
|
|
|
uint16_t raw_value = tdie_adc_reg.read();
|
|
|
|
// Extract 12-bit value from bits 11:0 (no shift needed)
|
|
uint16_t temp_12bit = raw_value & 0x0FFF;
|
|
|
|
// Convert from 12-bit 2's complement to signed 16-bit
|
|
int16_t signed_value;
|
|
if (temp_12bit & 0x0800) {
|
|
// Negative value - extend sign bit
|
|
signed_value = (int16_t)(temp_12bit | 0xF000);
|
|
} else {
|
|
// Positive value
|
|
signed_value = (int16_t)temp_12bit;
|
|
}
|
|
|
|
// Convert to Celsius: 0.5°C per step
|
|
return (float)signed_value * 0.5f;
|
|
} |