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Merge pull request #20360 from maribu/stm32-adc-typo

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cpu/stm32/periph_adc: fix register access
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Marian Buschsieweke 2024-02-08 16:31:46 +00:00 committed by GitHub
commit 26946a721b
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1 changed files with 12 additions and 5 deletions
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17
cpu/stm32/periph/adc_f4_f7.c
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@ -20,10 +20,11 @@
*/
#include "cpu.h"
#include "irq.h"
#include "mutex.h"
#include "periph/adc.h"
#include "periph_conf.h"
#include "periph/vbat.h"
#include "periph_conf.h"
/**
* @brief Maximum allowed ADC clock speed
@ -100,14 +101,20 @@ int adc_init(adc_t line)
}
ADC->CCR = ((clk_div / 2) - 1) << 16;
/* set sampling time to the maximum */
unsigned irq_state = irq_disable();
if (adc_config[line].chan >= 10) {
dev(line)->SMPR1 &= ~(MAX_ADC_SMP << (3 * (adc_config[line].chan - 10)));
dev(line)->SMPR1 |= MAX_ADC_SMP << (3 * (adc_config[line].chan - 10));
uint32_t smpr1 = dev(line)->SMPR1;
smpr1 &= ~(MAX_ADC_SMP << (3 * (adc_config[line].chan - 10)));
smpr1 |= MAX_ADC_SMP << (3 * (adc_config[line].chan - 10));
dev(line)->SMPR1 = smpr1;
}
else {
dev(line)->SMPR1 &= ~(MAX_ADC_SMP << (3 * adc_config[line].chan));
dev(line)->SMPR2 |= MAX_ADC_SMP << (3 * adc_config[line].chan);
uint32_t smpr2 = dev(line)->SMPR2;
smpr2 &= ~(MAX_ADC_SMP << (3 * adc_config[line].chan));
smpr2 |= MAX_ADC_SMP << (3 * adc_config[line].chan);
dev(line)->SMPR2 = smpr2;
}
irq_restore(irq_state);
/* free the device again */
done(line);
return 0;