David R.
139 lines
4.5 KiB
Arduino
139 lines
4.5 KiB
Arduino
#include "esp_log.h"
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#include "esp_check.h"
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#include "esp_adc/adc_oneshot.h"
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#include "esp_adc/adc_cali.h"
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#include "esp_adc/adc_cali_scheme.h"
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#define EXAMPLE_ADC2_CHAN0 ADC_CHANNEL_4
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#define EXAMPLE_ADC_ATTEN ADC_ATTEN_DB_12
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#define V_C_MAX (2450) //电池满电时检测的值
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#define V_C_MIN (2250) //电池没电时检测的值
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adc_oneshot_unit_handle_t adc2_handle;
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adc_cali_handle_t adc2_cali_handle = NULL;
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bool do_calibration2;
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static int adc_raw;
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static int adc_raw_;
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static int voltage_;
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static int voltage;
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static int voltage_per;
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static int voltage_per_;
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static bool example_adc_calibration_init(adc_unit_t unit, adc_channel_t channel, adc_atten_t atten, adc_cali_handle_t *out_handle);
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static void example_adc_calibration_deinit(adc_cali_handle_t handle);
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void setup() {
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Serial.begin(115200); // 初始化串口通信
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adc_oneshot_chan_cfg_t config = {
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.atten = EXAMPLE_ADC_ATTEN,
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.bitwidth = ADC_BITWIDTH_DEFAULT,
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};
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//-------------ADC2 Init---------------//
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adc_oneshot_unit_init_cfg_t init_config2 = {
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.unit_id = ADC_UNIT_2,
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.ulp_mode = ADC_ULP_MODE_DISABLE,
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};
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ESP_ERROR_CHECK(adc_oneshot_new_unit(&init_config2, &adc2_handle));
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//-------------ADC2 Calibration Init---------------//
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do_calibration2 = example_adc_calibration_init(ADC_UNIT_2, EXAMPLE_ADC2_CHAN0, EXAMPLE_ADC_ATTEN, &adc2_cali_handle);
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//-------------ADC2 Config---------------//
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ESP_ERROR_CHECK(adc_oneshot_config_channel(adc2_handle, EXAMPLE_ADC2_CHAN0, &config));
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}
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void loop() {
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for(int i=0;i<500;i++)
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{
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ESP_ERROR_CHECK(adc_oneshot_read(adc2_handle, EXAMPLE_ADC2_CHAN0,&adc_raw));
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adc_raw_ += adc_raw;
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}
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adc_raw_ = adc_raw_ / 500;
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Serial.printf("ADC%d Channel[%d] Raw Data: %d \r\n", ADC_UNIT_2 + 1, EXAMPLE_ADC2_CHAN0, adc_raw_);
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if (do_calibration2) {
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ESP_ERROR_CHECK(adc_cali_raw_to_voltage(adc2_cali_handle, adc_raw_, &voltage));
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Serial.printf("ADC%d Channel[%d] Cali Voltage: %d mV \r\n", ADC_UNIT_2 + 1, EXAMPLE_ADC2_CHAN0, voltage);
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}
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voltage_ = voltage - V_C_MIN;
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if(voltage_ < 0)
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voltage_ = 0;
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voltage_per_ = voltage_per;
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voltage_per = voltage_ * 10000 / (V_C_MAX - V_C_MIN) / 100 ;
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voltage_per = (voltage_per_ + voltage_per) / 2;
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if(voltage_per > 100)
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voltage_per = 100;
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Serial.printf("Battery charge: %d %% \r\n",voltage_per);
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delay(1000); // 延迟1秒
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}
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/*---------------------------------------------------------------
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ADC Calibration
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---------------------------------------------------------------*/
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static bool example_adc_calibration_init(adc_unit_t unit, adc_channel_t channel, adc_atten_t atten, adc_cali_handle_t *out_handle)
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{
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adc_cali_handle_t handle = NULL;
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esp_err_t ret = ESP_FAIL;
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bool calibrated = false;
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#if ADC_CALI_SCHEME_CURVE_FITTING_SUPPORTED
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if (!calibrated) {
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ESP_LOGI(TAG, "calibration scheme version is %s", "Curve Fitting");
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adc_cali_curve_fitting_config_t cali_config = {
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.unit_id = unit,
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.chan = channel,
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.atten = atten,
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.bitwidth = ADC_BITWIDTH_DEFAULT,
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};
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ret = adc_cali_create_scheme_curve_fitting(&cali_config, &handle);
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if (ret == ESP_OK) {
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calibrated = true;
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}
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}
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#endif
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#if ADC_CALI_SCHEME_LINE_FITTING_SUPPORTED
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if (!calibrated) {
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ESP_LOGI(TAG, "calibration scheme version is %s", "Line Fitting");
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adc_cali_line_fitting_config_t cali_config = {
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.unit_id = unit,
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.atten = atten,
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.bitwidth = ADC_BITWIDTH_DEFAULT,
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};
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ret = adc_cali_create_scheme_line_fitting(&cali_config, &handle);
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if (ret == ESP_OK) {
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calibrated = true;
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}
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}
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#endif
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*out_handle = handle;
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if (ret == ESP_OK) {
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ESP_LOGI(TAG, "Calibration Success");
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} else if (ret == ESP_ERR_NOT_SUPPORTED || !calibrated) {
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ESP_LOGW(TAG, "eFuse not burnt, skip software calibration");
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} else {
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ESP_LOGE(TAG, "Invalid arg or no memory");
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}
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return calibrated;
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}
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static void example_adc_calibration_deinit(adc_cali_handle_t handle)
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{
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#if ADC_CALI_SCHEME_CURVE_FITTING_SUPPORTED
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ESP_LOGI(TAG, "deregister %s calibration scheme", "Curve Fitting");
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ESP_ERROR_CHECK(adc_cali_delete_scheme_curve_fitting(handle));
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#elif ADC_CALI_SCHEME_LINE_FITTING_SUPPORTED
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ESP_LOGI(TAG, "deregister %s calibration scheme", "Line Fitting");
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ESP_ERROR_CHECK(adc_cali_delete_scheme_line_fitting(handle));
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#endif
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}
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