134 lines
4.2 KiB
C
134 lines
4.2 KiB
C
// This file is part of the CircuitPython project: https://circuitpython.org
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//
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// SPDX-FileCopyrightText: Copyright (c) 2017 Dan Halbert for Adafruit Industries
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// SPDX-FileCopyrightText: Copyright (c) 2019 Lucian Copeland for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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#include <math.h>
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#include <string.h>
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#include "py/runtime.h"
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#include "common-hal/microcontroller/Processor.h"
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#include "shared-bindings/microcontroller/Processor.h"
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#include "shared-bindings/microcontroller/ResetReason.h"
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#include "esp_sleep.h"
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#include "esp_system.h"
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#include "soc/efuse_reg.h"
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#if !defined(CONFIG_IDF_TARGET_ESP32)
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#include "driver/temperature_sensor.h"
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#endif
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float common_hal_mcu_processor_get_temperature(void) {
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float tsens_value;
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#if defined(CONFIG_IDF_TARGET_ESP32)
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return NAN;
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#else
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temperature_sensor_handle_t temp_sensor = NULL;
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temperature_sensor_config_t temp_sensor_config = TEMPERATURE_SENSOR_CONFIG_DEFAULT(-10, 80); // DEFAULT: range:-10℃ ~ 80℃, error < 1℃.
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temperature_sensor_install(&temp_sensor_config, &temp_sensor);
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temperature_sensor_enable(temp_sensor);
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temperature_sensor_get_celsius(temp_sensor, &tsens_value);
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temperature_sensor_disable(temp_sensor);
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temperature_sensor_uninstall(temp_sensor);
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#endif
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return tsens_value;
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}
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float common_hal_mcu_processor_get_voltage(void) {
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return NAN;
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}
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uint32_t common_hal_mcu_processor_get_frequency(void) {
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return CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ * 1000000;
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}
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STATIC uint8_t swap_nibbles(uint8_t v) {
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return ((v << 4) | (v >> 4)) & 0xff;
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}
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void common_hal_mcu_processor_get_uid(uint8_t raw_id[]) {
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memset(raw_id, 0, COMMON_HAL_MCU_PROCESSOR_UID_LENGTH);
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uint8_t *ptr = &raw_id[COMMON_HAL_MCU_PROCESSOR_UID_LENGTH - 1];
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// MAC address contains 48 bits (6 bytes), 32 in the low order word
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#if defined(CONFIG_IDF_TARGET_ESP32)
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uint32_t mac_address_part = REG_READ(EFUSE_BLK0_RDATA1_REG);
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#elif defined(CONFIG_IDF_TARGET_ESP32H2)
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uint32_t mac_address_part = REG_READ(EFUSE_RD_MAC_SYS_0_REG);
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#elif defined(CONFIG_IDF_TARGET_ESP32C2)
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uint32_t mac_address_part = REG_READ(EFUSE_RD_BLK2_DATA0_REG);
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#else
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uint32_t mac_address_part = REG_READ(EFUSE_RD_MAC_SPI_SYS_0_REG);
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#endif
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*ptr-- = swap_nibbles(mac_address_part & 0xff);
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mac_address_part >>= 8;
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*ptr-- = swap_nibbles(mac_address_part & 0xff);
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mac_address_part >>= 8;
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*ptr-- = swap_nibbles(mac_address_part & 0xff);
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mac_address_part >>= 8;
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*ptr-- = swap_nibbles(mac_address_part & 0xff);
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// and 16 in the high order word
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#if defined(CONFIG_IDF_TARGET_ESP32)
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mac_address_part = REG_READ(EFUSE_BLK0_RDATA2_REG);
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#elif defined(CONFIG_IDF_TARGET_ESP32H2)
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mac_address_part = REG_READ(EFUSE_RD_MAC_SYS_1_REG);
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#elif defined(CONFIG_IDF_TARGET_ESP32C2)
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mac_address_part = REG_READ(EFUSE_RD_BLK2_DATA1_REG);
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#else
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mac_address_part = REG_READ(EFUSE_RD_MAC_SPI_SYS_1_REG);
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#endif
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*ptr-- = swap_nibbles(mac_address_part & 0xff);
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mac_address_part >>= 8;
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*ptr-- = swap_nibbles(mac_address_part & 0xff);
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}
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mcu_reset_reason_t common_hal_mcu_processor_get_reset_reason(void) {
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switch (esp_reset_reason()) {
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case ESP_RST_POWERON:
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return RESET_REASON_POWER_ON;
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case ESP_RST_SW:
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case ESP_RST_PANIC:
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return RESET_REASON_SOFTWARE;
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case ESP_RST_INT_WDT:
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case ESP_RST_TASK_WDT:
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case ESP_RST_WDT:
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return RESET_REASON_WATCHDOG;
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case ESP_RST_BROWNOUT:
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return RESET_REASON_BROWNOUT;
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case ESP_RST_SDIO:
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case ESP_RST_EXT:
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return RESET_REASON_RESET_PIN;
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case ESP_RST_DEEPSLEEP:
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switch (esp_sleep_get_wakeup_cause()) {
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case ESP_SLEEP_WAKEUP_TIMER:
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case ESP_SLEEP_WAKEUP_EXT0:
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case ESP_SLEEP_WAKEUP_EXT1:
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case ESP_SLEEP_WAKEUP_TOUCHPAD:
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case ESP_SLEEP_WAKEUP_ULP:
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return RESET_REASON_DEEP_SLEEP_ALARM;
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case ESP_SLEEP_WAKEUP_UNDEFINED:
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default:
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return RESET_REASON_UNKNOWN;
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}
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case ESP_RST_UNKNOWN:
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default:
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return RESET_REASON_UNKNOWN;
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}
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}
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