diff options
Diffstat (limited to 'src/stm32/stm32h7_adc.c')
| -rw-r--r-- | src/stm32/stm32h7_adc.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/stm32/stm32h7_adc.c b/src/stm32/stm32h7_adc.c index 2733b24f..ca149d3d 100644 --- a/src/stm32/stm32h7_adc.c +++ b/src/stm32/stm32h7_adc.c @@ -22,6 +22,9 @@ #define ADC_ISR_LDORDY_Msk (0x1UL << ADC_ISR_LDORDY_Pos) #define ADC_ISR_LDORDY ADC_ISR_LDORDY_Msk +#define ADC_TEMPERATURE_PIN 0xfe +DECL_ENUMERATION("pin", "ADC_TEMPERATURE", ADC_TEMPERATURE_PIN); + DECL_CONSTANT("ADC_MAX", 4095); // GPIOs like A0_C are not covered! @@ -88,7 +91,7 @@ static const uint8_t adc_pins[] = { GPIO('H', 4), // ADC3_INP15 GPIO('H', 5), // ADC3_INP16 0, // Vbat/4 - 0, // VSENSE + ADC_TEMPERATURE_PIN,// VSENSE 0, // VREFINT }; @@ -185,7 +188,13 @@ gpio_adc_setup(uint32_t pin) MODIFY_REG(adc->CFGR2, ADC_CFGR2_OVSS_Msk, OVERSAMPLES_EXPONENT << ADC_CFGR2_OVSS_Pos); } - gpio_peripheral(pin, GPIO_ANALOG, 0); + + if (pin == ADC_TEMPERATURE_PIN) { + ADC3_COMMON->CCR = ADC_CCR_TSEN; + } else { + gpio_peripheral(pin, GPIO_ANALOG, 0); + } + // Preselect (connect) channel adc->PCSEL |= (1 << chan); return (struct gpio_adc){ .adc = adc, .chan = chan }; |