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[NUCLEO_F334R8] Fix issue with multiple ADC initialization

pull/809/head
bcostm 2014-12-22 11:04:02 +01:00
parent 4dd46fd82a
commit ef626d7f68
1 changed files with 12 additions and 8 deletions
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20
libraries/mbed/targets/hal/TARGET_STM/TARGET_NUCLEO_F334R8/analogin_api.c
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@ -37,7 +37,8 @@
ADC_HandleTypeDef AdcHandle;
int adc_inited = 0;
int adc1_inited = 0;
int adc2_inited = 0;
void analogin_init(analogin_t *obj, PinName pin)
{
@ -51,13 +52,16 @@ void analogin_init(analogin_t *obj, PinName pin)
// Save pin number for the read function
obj->pin = pin;
// The ADC initialization is done once
if (adc_inited == 0) {
adc_inited = 1;
// Enable ADC clock
if (obj->adc == ADC_1) __ADC1_CLK_ENABLE();
if (obj->adc == ADC_2) __ADC2_CLK_ENABLE();
// The ADC initialization is done only once for each ADC
if ((adc1_inited == 0) || (adc2_inited == 0)) {
if (obj->adc == ADC_1) {
__ADC12_CLK_ENABLE();
adc1_inited = 1;
}
if (obj->adc == ADC_2) {
__ADC12_CLK_ENABLE();
adc2_inited = 1;
}
// Configure ADC
AdcHandle.Instance = (ADC_TypeDef *)(obj->adc);