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drivers: adc: stm32: add log message when adc overrun

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Displays an error log message when an ADC overrun occurs.

Signed-off-by: Guillaume Gautier <guillaume.gautier-ext@st.com>
This commit is contained in:
Guillaume Gautier 2024-12-12 11:33:49 +01:00 committed by Benjamin Cabé
parent 30542797d9
commit e978164a6b
1 changed files with 14 additions and 6 deletions
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20
drivers/adc/adc_stm32.c
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@ -793,10 +793,13 @@ static void dma_callback(const struct device *dev, void *user_data,
if (channel == data->dma.channel) {
#if !DT_HAS_COMPAT_STATUS_OKAY(st_stm32f1_adc)
if (LL_ADC_IsActiveFlag_OVR(adc) || (status >= 0)) {
#else
if (status >= 0) {
if (LL_ADC_IsActiveFlag_OVR(adc)) {
LL_ADC_ClearFlag_OVR(adc);
LOG_ERR("ADC overrun error occurred. Reduce clock source frequency, "
"increase prescaler value or increase sampling times.");
}
#endif /* !DT_HAS_COMPAT_STATUS_OKAY(st_stm32f1_adc) */
if (status >= 0) {
data->samples_count = data->channel_count;
data->buffer += data->channel_count;
/* Stop the DMA engine, only to start it again when the callback returns
@ -805,9 +808,6 @@ static void dma_callback(const struct device *dev, void *user_data,
* within adc_context_start_sampling
*/
dma_stop(data->dma.dma_dev, data->dma.channel);
#if !DT_HAS_COMPAT_STATUS_OKAY(st_stm32f1_adc)
LL_ADC_ClearFlag_OVR(adc);
#endif /* !DT_HAS_COMPAT_STATUS_OKAY(st_stm32f1_adc) */
/* No need to invalidate the cache because it's assumed that
* the address is in a non-cacheable SRAM region.
*/
@ -1118,6 +1118,14 @@ static void adc_stm32_isr(const struct device *dev)
(const struct adc_stm32_cfg *)dev->config;
ADC_TypeDef *adc = config->base;
#if !DT_HAS_COMPAT_STATUS_OKAY(st_stm32f1_adc)
if (LL_ADC_IsActiveFlag_OVR(adc)) {
LL_ADC_ClearFlag_OVR(adc);
LOG_ERR("ADC overrun error occurred. Use DMA, reduce clock source frequency, "
"increase prescaler value or increase sampling times.");
}
#endif /* !DT_HAS_COMPAT_STATUS_OKAY(st_stm32f1_adc) */
#if DT_HAS_COMPAT_STATUS_OKAY(st_stm32f1_adc)
if (LL_ADC_IsActiveFlag_EOS(adc) == 1) {
#elif DT_HAS_COMPAT_STATUS_OKAY(st_stm32f4_adc)