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Drivers: max17048: updated voltage parameter output

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present output shows voltage in mV.
updated output shows voltage in uV.

Signed-off-by: Rahul Goyal <goyalrahul1516@gmail.com>
This commit is contained in:
Rahul Goyal 2024-07-08 14:43:29 +05:30 committed by Alberto Escolar
parent 74c86928b2
commit f1e38e73d7
1 changed files with 7 additions and 8 deletions
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15
drivers/fuel_gauge/max17048/max17048.c
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@ -31,8 +31,8 @@ LOG_MODULE_REGISTER(MAX17048);
struct max17048_data {
/* Charge as percentage */
uint8_t charge;
/* Voltage as mV */
uint16_t voltage;
/* Voltage as uV */
uint32_t voltage;
/* Time in minutes */
uint16_t time_to_full;
@ -72,9 +72,10 @@ int max17048_adc(const struct device *i2c_dev, uint16_t *response)
/**
* Battery voltage
*/
int max17048_voltage(const struct device *i2c_dev, uint16_t *response)
int max17048_voltage(const struct device *i2c_dev, uint32_t *response)
{
int rc = max17048_adc(i2c_dev, response);
uint16_t raw_voltage;
int rc = max17048_adc(i2c_dev, &raw_voltage);
if (rc < 0) {
return rc;
@ -85,12 +86,10 @@ int max17048_voltage(const struct device *i2c_dev, uint16_t *response)
* MAX17048-MAX17049.pdf
* Page 10, Table 2. Register Summary: 78.125µV/cell
* Max17048 only supports one cell so we just have to multiply the value by 78.125 to
* obtain µV and then divide the value to obtain V.
* But to avoid floats, instead of using 78.125 we will use 78125 and use this value as
* milli volts instead of volts.
* obtain µV
*/
*response = (uint16_t)((uint32_t)*response * 78125L / 1000000L);
*response = (uint32_t)raw_voltage * 78.125;
return 0;
}