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dac: update unit-test docs and examples for driver-NG

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laokaiyao
2022-05-24 17:26:36 +08:00
parent 351a18415c
commit f9f9a09dfb
129 changed files with 4163 additions and 8227 deletions
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96
examples/peripherals/dac/dac_basic/main/dac_basic.c Normal file
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/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: CC0-1.0
*/
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/dac_driver.h"
#include "driver/adc.h"
#include "esp_check.h"
#define EXAMPLE_DAC_USE_SEPARATE_CHANNEL 0 // Whether to register two DAC channels in separate control group
#if CONFIG_IDF_TARGET_ESP32
#define EXAMPLE_DAC_CHAN1_ADC_CHAN ADC2_CHANNEL_8 // GPIO25, same as DAC channel 0
#define EXAMPLE_DAC_CHAN2_ADC_CHAN ADC2_CHANNEL_9 // GPIO26, same as DAC channel 1
#define EXAMPLE_ADC_WIDTH ADC_WIDTH_BIT_12
#elif CONFIG_IDF_TARGET_ESP32S2
#define EXAMPLE_DAC_CHAN1_ADC_CHAN ADC2_CHANNEL_6 // GPIO17, same as DAC channel 0
#define EXAMPLE_DAC_CHAN2_ADC_CHAN ADC2_CHANNEL_7 // GPIO18, same as DAC channel 1
#define EXAMPLE_ADC_WIDTH ADC_WIDTH_BIT_13
#endif
#define EXAMPLE_ADC_ATTEN ADC_ATTEN_DB_11
static void adc_monitor_task(void *args)
{
/* Set the ADC channels, these channels are connected to the DAC channels internally */
ESP_ERROR_CHECK(adc2_config_channel_atten(EXAMPLE_DAC_CHAN1_ADC_CHAN, EXAMPLE_ADC_ATTEN));
ESP_ERROR_CHECK(adc2_config_channel_atten(EXAMPLE_DAC_CHAN2_ADC_CHAN, EXAMPLE_ADC_ATTEN));
int chan1_val = 0;
int chan2_val = 0;
while (1) {
/* Read the DAC output voltage */
ESP_ERROR_CHECK(adc2_get_raw(EXAMPLE_DAC_CHAN1_ADC_CHAN, EXAMPLE_ADC_WIDTH, &chan1_val));
ESP_ERROR_CHECK(adc2_get_raw(EXAMPLE_DAC_CHAN2_ADC_CHAN, EXAMPLE_ADC_WIDTH, &chan2_val));
printf("DAC channel 0 vaule: %4d\tDAC channel 1 vaule: %4d\n", chan1_val, chan2_val);
vTaskDelay(pdMS_TO_TICKS(100));
}
}
static void dac_output_task(void *args)
{
dac_channels_handle_t handle = (dac_channels_handle_t)args;
uint32_t val = 0;
while (1) {
/* Set the voltage every 100 ms */
ESP_ERROR_CHECK(dac_channels_set_voltage(handle, val));
val += 10;
val %= 250;
vTaskDelay(pdMS_TO_TICKS(500));
}
}
static void dac_init_channel(dac_channel_mask_t mask, dac_channels_handle_t *dac_handle)
{
dac_channels_handle_t handle = NULL;
dac_channels_config_t cfg = {
.chan_sel = mask,
};
/* Allocate the channel group */
ESP_ERROR_CHECK(dac_new_channels(&cfg, &handle));
/* Enable the channels in the group */
ESP_ERROR_CHECK(dac_channels_enable(handle));
*dac_handle = handle;
}
static void __attribute__((unused)) dac_deinit_channel(dac_channels_handle_t dac_handle)
{
/* Disable the DAC channels */
ESP_ERROR_CHECK(dac_channels_disable(dac_handle));
/* Delete the channel group */
ESP_ERROR_CHECK(dac_del_channels(dac_handle));
}
void app_main(void)
{
#if EXAMPLE_DAC_USE_SEPARATE_CHANNEL
dac_channels_handle_t chan1_handle;
dac_channels_handle_t chan2_handle;
/* Initialize the two channels separately */
dac_init_channel(DAC_CHANNEL_MASK_CH0, &chan1_handle);
dac_init_channel(DAC_CHANNEL_MASK_CH1, &chan2_handle);
xTaskCreate(dac_output_task, "dac_chan1_output_task", 4096, chan1_handle, 5, NULL);
vTaskDelay(pdMS_TO_TICKS(500)); // To differential the output of two channels
xTaskCreate(dac_output_task, "dac_chan2_output_task", 4096, chan2_handle, 5, NULL);
xTaskCreate(adc_monitor_task, "adc_monitor_task", 4096, NULL, 5, NULL);
#else
dac_channels_handle_t chan12_handle;
/* Initialize the two channels in a same group */
dac_init_channel(DAC_CHANNEL_MASK_BOTH, &chan12_handle);
xTaskCreate(dac_output_task, "dac_output_task", 4096, chan12_handle, 5, NULL);
xTaskCreate(adc_monitor_task, "adc_monitor_task", 4096, NULL, 5, NULL);
#endif
}