kopia lustrzana https://github.com/espressif/esp-idf
36 wiersze
1.3 KiB
C
36 wiersze
1.3 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2016-2022 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/* This file is used to get `adc2_init_code_calibration` executed before the APP when the ADC2 is used by Wi-Fi or other drivers.
|
|
The linker will link constructor (adc2_init_code_calibration) only when any sections inside the same file (adc2_cal_include) is used.
|
|
Don't put any other code into this file. */
|
|
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "hal/adc_types.h"
|
|
#include "hal/adc_hal_common.h"
|
|
#include "esp_private/adc_share_hw_ctrl.h"
|
|
|
|
extern portMUX_TYPE rtc_spinlock;
|
|
|
|
/**
|
|
* @brief Set initial code to ADC2 after calibration. ADC2 RTC and ADC2 PWDET controller share the initial code.
|
|
* This API be called in before `app_main()`.
|
|
*/
|
|
static __attribute__((constructor)) void adc2_init_code_calibration(void)
|
|
{
|
|
adc_hal_calibration_init(ADC_UNIT_2);
|
|
adc_calc_hw_calibration_code(ADC_UNIT_2, ADC_ATTEN_DB_12);
|
|
portENTER_CRITICAL(&rtc_spinlock);
|
|
adc_set_hw_calibration_code(ADC_UNIT_2, ADC_ATTEN_DB_12);
|
|
portEXIT_CRITICAL(&rtc_spinlock);
|
|
}
|
|
|
|
/** Don't call `adc2_cal_include` in user code. */
|
|
void adc2_cal_include(void)
|
|
{
|
|
/* When this empty function is called, the `adc2_init_code_calibration` constructor will be linked and executed before the app.*/
|
|
}
|