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cpu/stm32/periph/adc_f3: fix for devices which have only one ADC

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This commit is contained in:
hugues 2020-09-28 10:29:53 +02:00
parent 6e65a60ea8
commit 9c41e25fff
1 changed files with 8 additions and 2 deletions
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10
cpu/stm32/periph/adc_f3.c
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@ -28,6 +28,12 @@
#define SMP_SLOW (0x2) /*< Sampling time for slow channels #define SMP_SLOW (0x2) /*< Sampling time for slow channels
(0x2 = 4.5 ADC clock cycles) */ (0x2 = 4.5 ADC clock cycles) */
#ifdef ADC1_COMMON
#define ADC_INSTANCE ADC1_COMMON
#else
#define ADC_INSTANCE ADC12_COMMON
#endif
/** /**
* @brief Allocate locks for all available ADC devices * @brief Allocate locks for all available ADC devices
*/ */
@ -77,11 +83,11 @@ int adc_init(adc_t line)
* prescaler is 1 */ * prescaler is 1 */
if (!(RCC->CFGR & RCC_CFGR_HPRE_3)) { if (!(RCC->CFGR & RCC_CFGR_HPRE_3)) {
/* set ADC clock to HCLK/1 */ /* set ADC clock to HCLK/1 */
ADC12_COMMON->CCR |= ADC_CCR_CKMODE_0; ADC_INSTANCE->CCR |= ADC_CCR_CKMODE_0;
} }
else { else {
/* set ADC clock to HCLK/2 otherwise */ /* set ADC clock to HCLK/2 otherwise */
ADC12_COMMON->CCR |= ADC_CCR_CKMODE_1; ADC_INSTANCE->CCR |= ADC_CCR_CKMODE_1;
} }
/* Configure the pin */ /* Configure the pin */