ADC1 binding of the BattTask: VBAT and current pins, VREFINT. More...

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Functions
int	batt_adc_init (void)
	0 = ok

int	batt_adc_read (float vbat_pin, float cur_pin)
	0 = a new sample: pin voltages in volts

Detailed Description

ADC1 binding of the BattTask: VBAT and current pins, VREFINT.

Injected group of three conversions (VBAT, CUR, VREFINT), 16× hardware oversampling, 247.5-cycle sampling (the 100k/10k divider is a 9 kΩ source), started by software. batt_adc_read() returns the previous conversion and starts the next one, so the BattTask never waits for the ADC. Pin voltages are scaled with VREFINT and its factory calibration, so the result does not depend on the exact 3.1 V supply.

Register level (LL), no CubeMX ADC configuration needed. Channels and pins come from app_config.h (APP_BATT_*).

Definition in file batt_adc.h.

Function Documentation

◆ batt_adc_init()

int batt_adc_init ( void )

0 = ok

Definition at line 30 of file batt_adc.c.

References analog_pin(), APP_BATT_CUR_CH, APP_BATT_CUR_PIN, APP_BATT_CUR_PORT, APP_BATT_VBAT_CH, APP_BATT_VBAT_PIN, APP_BATT_VBAT_PORT, delay_us(), and s_started.

Referenced by app_start().

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◆ batt_adc_read()

int batt_adc_read	(	float *	vbat_pin,
		float *	cur_pin
	)

0 = a new sample: pin voltages in volts

Definition at line 79 of file batt_adc.c.