components/esp_adc/adc_cali.c (ESP-IDF)

/* * SPDX-FileCopyrightText: 2020-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ #include <string.h> #include <sys/cdefs.h> #include "esp_types.h" #include "sdkconfig.h" #include "esp_err.h" #include "esp_log.h" #include "esp_check.h" #include "esp_heap_caps.h" #include "hal/adc_types.h" #include "esp_adc/adc_cali.h" #include "adc_cali_interface.h" #include "adc_cali_schemes.h" const __attribute__((unused)) static char *TAG = "adc_cali"; esp_err_t adc_cali_check_scheme(adc_cali_scheme_ver_t *scheme_mask) { ESP_RETURN_ON_FALSE(scheme_mask, ESP_ERR_INVALID_ARG, TAG, "invalid argument: null pointer"); *scheme_mask = 0; #if ADC_CALI_SCHEME_LINE_FITTING_SUPPORTED *scheme_mask |= ADC_CALI_SCHEME_VER_LINE_FITTING; #elif ADC_CALI_SCHEME_CURVE_FITTING_SUPPORTED *scheme_mask |= ADC_CALI_SCHEME_VER_CURVE_FITTING; #endif //Add your custom ADC calibration scheme here ESP_RETURN_ON_FALSE((*scheme_mask) != 0, ESP_ERR_NOT_SUPPORTED, TAG, "no supported calibration scheme yet"); return ESP_OK; } esp_err_t adc_cali_raw_to_voltage(adc_cali_handle_t handle, int raw, int *voltage) { ESP_RETURN_ON_FALSE(handle && voltage, ESP_ERR_INVALID_ARG, TAG, "invalid argument: null pointer"); ESP_RETURN_ON_FALSE(handle->ctx, ESP_ERR_INVALID_STATE, TAG, "no calibration scheme, create a scheme first"); return handle->raw_to_voltage(handle->ctx, raw, voltage); }