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adc: fix adc filter acquire logic

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This commit is contained in:
Armando 2023-05-04 15:18:51 +08:00
parent a6b5c93ed5
commit 628162d71e
1 changed files with 8 additions and 6 deletions
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14
components/esp_adc/adc_filter.c
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@ -21,8 +21,8 @@ static portMUX_TYPE s_filter_spinlock = portMUX_INITIALIZER_UNLOCKED;
#if SOC_ADC_DIG_IIR_FILTER_UNIT_BINDED
static atomic_bool s_adc_filter_claimed[SOC_ADC_PERIPH_NUM] = {ATOMIC_VAR_INIT(false),
#if (SOC_ADC_PERIPH_NUM >= 2)
static atomic_bool s_adc_filter_claimed[SOC_ADC_DIGI_IIR_FILTER_NUM] = {ATOMIC_VAR_INIT(false),
#if (SOC_ADC_DIGI_IIR_FILTER_NUM >= 2)
ATOMIC_VAR_INIT(false)
#endif
};
@ -59,16 +59,18 @@ static esp_err_t s_adc_filter_claim(adc_continuous_handle_t handle, adc_iir_filt
{
(void)unit;
assert(handle && filter_ctx);
portENTER_CRITICAL(&s_filter_spinlock);
for (int i = 0; i < SOC_ADC_DIGI_IIR_FILTER_NUM; i++) {
portENTER_CRITICAL(&s_filter_spinlock);
bool found = !handle->iir_filter[i];
handle->iir_filter[i] = filter_ctx;
filter_ctx->filter_id = i;
portEXIT_CRITICAL(&s_filter_spinlock);
if (found) {
handle->iir_filter[i] = filter_ctx;
filter_ctx->filter_id = i;
portEXIT_CRITICAL(&s_filter_spinlock);
return ESP_OK;
}
}
portEXIT_CRITICAL(&s_filter_spinlock);
return ESP_ERR_NOT_FOUND;
}