diff options
Diffstat (limited to 'src/stm32/stm32h7_adc.c')
| -rw-r--r-- | src/stm32/stm32h7_adc.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/src/stm32/stm32h7_adc.c b/src/stm32/stm32h7_adc.c index 6740edd3..a630f266 100644 --- a/src/stm32/stm32h7_adc.c +++ b/src/stm32/stm32h7_adc.c @@ -160,10 +160,10 @@ static const uint8_t adc_pins[] = { #define ADC_CKMODE 0b11 #define ADC_ATICKS 0b110 #define ADC_ATICKS_H723_ADC3 0b111 -// stm32h7: clock=25Mhz, Tsamp=387.5, Tconv=394, total=15.76us -// stm32h723 adc3: clock=50Mhz, Tsamp=640.5, Tconv=653, total=13.06us -// stm32l4: clock=20Mhz, Tsamp=247.5, Tconv=260, total=13.0us -// stm32g4: clock=37.5Mhz, Tsamp=247.5, Tconv=260, total=6.933us +// 400Mhz stm32h7: clock=25Mhz, Tsamp=387.5, Tconv=394, total=15.76us +// 400Mhz stm32h723 adc3: clock=50Mhz, Tsamp=640.5, Tconv=653, total=13.06us +// 80Mhz stm32l4: clock=20Mhz, Tsamp=247.5, Tconv=260, total=13.0us +// 150Mhz stm32g4: clock=37.5Mhz, Tsamp=247.5, Tconv=260, total=6.933us // Handle register name differences between chips #if CONFIG_MACH_STM32H723 @@ -231,8 +231,9 @@ gpio_adc_setup(uint32_t pin) } else { // Use linear calibration on stm32h7 cr |= ADC_CR_ADCALLIN; - // Set boost mode on stm32h7 (adc clock is at 25Mhz) - cr |= 0b10 << ADC_CR_BOOST_Pos; + // Set boost mode on stm32h7 + uint32_t boost = CONFIG_CLOCK_FREQ > 400000000 ? 0b11 : 0b10; + cr |= boost << ADC_CR_BOOST_Pos; // Set 12bit samples on the stm32h7 adc->CFGR = ADC_CFGR_JQDIS | (0b110 << ADC_CFGR_RES_Pos); } |