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fix(ulp_adc): Provide ulp_adc_deinit() API to fix ADC1 handle leakage

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This commit is contained in:
paul
2023-12-12 22:12:02 +03:00
committed by Marius Vikhammer
parent e8a5fdcff3
commit 58dd50120f
2 changed files with 20 additions and 8 deletions
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7
components/ulp/ulp_common/include/ulp_adc.h
View File

@@ -29,6 +29,13 @@ typedef struct {
*/ */
esp_err_t ulp_adc_init(const ulp_adc_cfg_t *cfg); esp_err_t ulp_adc_init(const ulp_adc_cfg_t *cfg);
/**
* @brief Deinitialize ADC after use with ULP, allowing it to be reclaimed
*
* @return esp_err_t ESP_OK for successful.
*/
esp_err_t ulp_adc_deinit();
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif #endif

21
components/ulp/ulp_common/ulp_adc.c
View File

@@ -15,17 +15,16 @@
#include "esp_private/adc_share_hw_ctrl.h" #include "esp_private/adc_share_hw_ctrl.h"
static const char *TAG = "ulp_adc"; static const char *TAG = "ulp_adc";
static adc_oneshot_unit_handle_t s_adc1_handle = NULL;
esp_err_t ulp_adc_init(const ulp_adc_cfg_t *cfg) esp_err_t ulp_adc_init(const ulp_adc_cfg_t *cfg)
{ {
esp_err_t ret = ESP_OK; esp_err_t ret = ESP_OK;
ESP_GOTO_ON_FALSE(cfg, ESP_ERR_INVALID_ARG, err, TAG, "cfg == NULL"); ESP_RETURN_ON_FALSE(cfg, ESP_ERR_INVALID_ARG, TAG, "cfg == NULL");
ESP_GOTO_ON_FALSE(cfg->adc_n == ADC_UNIT_1, ESP_ERR_INVALID_ARG, err, TAG, "Only ADC_UNIT_1 is supported for now"); ESP_RETURN_ON_FALSE(cfg->adc_n == ADC_UNIT_1, ESP_ERR_INVALID_ARG, TAG, "Only ADC_UNIT_1 is supported for now");
//-------------ADC1 Init---------------// //-------------ADC1 Init---------------//
adc_oneshot_unit_handle_t adc1_handle;
adc_oneshot_unit_init_cfg_t init_config1 = { adc_oneshot_unit_init_cfg_t init_config1 = {
.unit_id = cfg->adc_n, .unit_id = cfg->adc_n,
.ulp_mode = cfg->ulp_mode, .ulp_mode = cfg->ulp_mode,
@@ -37,21 +36,27 @@ esp_err_t ulp_adc_init(const ulp_adc_cfg_t *cfg)
init_config1.ulp_mode = ADC_ULP_MODE_RISCV; init_config1.ulp_mode = ADC_ULP_MODE_RISCV;
} }
ret = adc_oneshot_new_unit(&init_config1, &s_adc1_handle);
ESP_ERROR_CHECK(adc_oneshot_new_unit(&init_config1, &adc1_handle)); if (ret != ESP_OK) return ret;
//-------------ADC1 Config---------------// //-------------ADC1 Config---------------//
adc_oneshot_chan_cfg_t config = { adc_oneshot_chan_cfg_t config = {
.bitwidth = cfg->width, .bitwidth = cfg->width,
.atten = cfg->atten, .atten = cfg->atten,
}; };
ESP_ERROR_CHECK(adc_oneshot_config_channel(adc1_handle, cfg->channel, &config)); ret = adc_oneshot_config_channel(s_adc1_handle, cfg->channel, &config);
if (ret != ESP_OK) return ret;
//Calibrate the ADC //Calibrate the ADC
#if SOC_ADC_CALIBRATION_V1_SUPPORTED #if SOC_ADC_CALIBRATION_V1_SUPPORTED
adc_set_hw_calibration_code(cfg->adc_n, cfg->atten); adc_set_hw_calibration_code(cfg->adc_n, cfg->atten);
#endif #endif
err:
return ret; return ret;
} }
esp_err_t ulp_adc_deinit()
{
// No need to check for null-pointer and stuff, oneshot driver already does that
return adc_oneshot_del_unit(s_adc1_handle);
}