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Small fixes to make analog in work.

pull/8/head
Joe Turner 2013-06-03 16:42:28 +01:00
parent 32e7bb8b8c
commit 79bb66bab5
1 changed files with 4 additions and 3 deletions
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7
libraries/mbed/vendor/STM/capi/analogin_api.c vendored
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@ -53,7 +53,9 @@ void analogin_init(analogin_t *obj, PinName pin) {
}
// ensure power is turned on
RCC->APB1ENR |= RCC_APB2ENR_ADC1EN;
RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN | RCC_AHB1ENR_GPIOBEN |
RCC_AHB1ENR_GPIOCEN;
RCC->APB2ENR |= RCC_APB2ENR_ADC1EN;
// Enable the ADC
ADC1->CR2 |= ADC_CR2_ADON;
@ -63,8 +65,7 @@ void analogin_init(analogin_t *obj, PinName pin) {
static inline uint32_t adc_read(analogin_t *obj) {
// Select the appropriate channel
ADC1->SQR3 &= ~ADC_SQR3_SQ1;
ADC1->SQR3 |= (int) obj->adc;
ADC1->SQR3 = (int) obj->adc;
// Start conversion
ADC1->CR2 |= ADC_CR2_SWSTART;