1 /*
2 * SPDX-FileCopyrightText: 2020-2024 Espressif Systems (Shanghai) CO LTD
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <string.h>
8 #include <sys/cdefs.h>
9 #include "esp_types.h"
10 #include "sdkconfig.h"
11 #include "esp_err.h"
12 #include "esp_log.h"
13 #include "esp_check.h"
14 #include "esp_heap_caps.h"
15 #include "hal/adc_types.h"
16 #include "esp_adc/adc_cali.h"
17 #include "adc_cali_interface.h"
18 #include "adc_cali_schemes.h"
19
20 const __attribute__((unused)) static char *TAG = "adc_cali";
21
22
adc_cali_check_scheme(adc_cali_scheme_ver_t * scheme_mask)23 esp_err_t adc_cali_check_scheme(adc_cali_scheme_ver_t *scheme_mask)
24 {
25 ESP_RETURN_ON_FALSE(scheme_mask, ESP_ERR_INVALID_ARG, TAG, "invalid argument: null pointer");
26 *scheme_mask = 0;
27 #if ADC_CALI_SCHEME_LINE_FITTING_SUPPORTED
28 *scheme_mask |= ADC_CALI_SCHEME_VER_LINE_FITTING;
29 #elif ADC_CALI_SCHEME_CURVE_FITTING_SUPPORTED
30 *scheme_mask |= ADC_CALI_SCHEME_VER_CURVE_FITTING;
31 #endif
32
33 //Add your custom ADC calibration scheme here
34
35 ESP_RETURN_ON_FALSE((*scheme_mask) != 0, ESP_ERR_NOT_SUPPORTED, TAG, "no supported calibration scheme yet");
36
37 return ESP_OK;
38 }
39
adc_cali_raw_to_voltage(adc_cali_handle_t handle,int raw,int * voltage)40 esp_err_t adc_cali_raw_to_voltage(adc_cali_handle_t handle, int raw, int *voltage)
41 {
42 ESP_RETURN_ON_FALSE(handle && voltage, ESP_ERR_INVALID_ARG, TAG, "invalid argument: null pointer");
43 ESP_RETURN_ON_FALSE(handle->ctx, ESP_ERR_INVALID_STATE, TAG, "no calibration scheme, create a scheme first");
44
45 return handle->raw_to_voltage(handle->ctx, raw, voltage);
46 }
47
