diff options
Diffstat (limited to 'src/stm32/stm32f0_adc.c')
| -rw-r--r-- | src/stm32/stm32f0_adc.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/stm32/stm32f0_adc.c b/src/stm32/stm32f0_adc.c index 3561c08d..aeb32bcb 100644 --- a/src/stm32/stm32f0_adc.c +++ b/src/stm32/stm32f0_adc.c @@ -1,6 +1,6 @@ // ADC functions on STM32 // -// Copyright (C) 2019 Kevin O'Connor <kevin@koconnor.net> +// Copyright (C) 2019-2020 Kevin O'Connor <kevin@koconnor.net> // // This file may be distributed under the terms of the GNU GPLv3 license. @@ -15,11 +15,15 @@ DECL_CONSTANT("ADC_MAX", 4095); +#define ADC_TEMPERATURE_PIN 0xfe +DECL_ENUMERATION("pin", "ADC_TEMPERATURE", ADC_TEMPERATURE_PIN); + static const uint8_t adc_pins[] = { GPIO('A', 0), GPIO('A', 1), GPIO('A', 2), GPIO('A', 3), GPIO('A', 4), GPIO('A', 5), GPIO('A', 6), GPIO('A', 7), GPIO('B', 0), GPIO('B', 1), GPIO('C', 0), GPIO('C', 1), GPIO('C', 2), GPIO('C', 3), GPIO('C', 4), GPIO('C', 5), + ADC_TEMPERATURE_PIN }; struct gpio_adc @@ -68,7 +72,11 @@ gpio_adc_setup(uint32_t pin) } } - gpio_peripheral(pin, GPIO_ANALOG, 0); + if (pin == ADC_TEMPERATURE_PIN) { + ADC1_COMMON->CCR = ADC_CCR_TSEN; + } else { + gpio_peripheral(pin, GPIO_ANALOG, 0); + } return (struct gpio_adc){ .adc = adc, .chan = 1 << chan }; } |