esp-idf/components/driver/test/test_adc_common.c

/*
 Tests for the adc device driver
*/
#include "esp_system.h"
#include "driver/adc.h"
#include "driver/dac.h"
#include "driver/rtc_io.h"
#include "driver/gpio.h"
#include "unity.h"
#include "esp_system.h"
#include "esp_event.h"
#include "esp_wifi.h"
#include "esp_log.h"
#include "nvs_flash.h"
#include "test_utils.h"
#include "soc/adc_periph.h"

static const char *TAG = "test_adc";

#ifdef CONFIG_IDF_TARGET_ESP32
#define ADC1_TEST_WIDTH         ADC_WIDTH_BIT_12
#define ADC2_TEST_WIDTH         ADC_WIDTH_BIT_12
#elif defined CONFIG_IDF_TARGET_ESP32S2
#define ADC1_TEST_WIDTH         ADC_WIDTH_BIT_13   //ESP32S2 only support 13 bit width
#define ADC2_TEST_WIDTH         ADC_WIDTH_BIT_13   //ESP32S2 only support 13 bit width
#endif

#define ADC1_TEST_ATTEN         ADC_ATTEN_DB_11
#define ADC2_TEST_ATTEN         ADC_ATTEN_DB_11

#define ADC1_TEST_CHANNEL_NUM   8
#define ADC2_TEST_CHANNEL_NUM   6

static const int adc1_ch[ADC1_TEST_CHANNEL_NUM] = {
    ADC1_CHANNEL_0,
    ADC1_CHANNEL_1,
    ADC1_CHANNEL_2,
    ADC1_CHANNEL_3,
    ADC1_CHANNEL_4,
    ADC1_CHANNEL_5,
    ADC1_CHANNEL_6,
    ADC1_CHANNEL_7,
};

static const int adc2_ch[ADC2_TEST_CHANNEL_NUM] = {
    ADC2_CHANNEL_0,
    ADC2_CHANNEL_1,
    ADC2_CHANNEL_2,
    ADC2_CHANNEL_3,
    ADC2_CHANNEL_4,
    ADC2_CHANNEL_5,
};

#define ADC_GET_IO_NUM(periph, channel) (adc_channel_io_map[periph][channel])

static void adc_fake_tie_middle(adc_unit_t adc_unit, adc_channel_t channel)
{
    gpio_num_t gpio_num = 0;
    if (adc_unit & ADC_UNIT_1) {
        gpio_num = ADC_GET_IO_NUM(0, channel);
    }
    if (adc_unit & ADC_UNIT_2) {
        gpio_num = ADC_GET_IO_NUM(1, channel);
    }
    TEST_ESP_OK(rtc_gpio_pullup_en(gpio_num));
    TEST_ESP_OK(rtc_gpio_pulldown_en(gpio_num));
    TEST_ESP_OK(gpio_set_pull_mode(gpio_num, GPIO_PULLUP_PULLDOWN));
}

static void adc_fake_tie_high(adc_unit_t adc_unit, adc_channel_t channel)
{
    gpio_num_t gpio_num = 0;
    if (adc_unit & ADC_UNIT_1) {
        gpio_num = ADC_GET_IO_NUM(0, channel);
    }
    if (adc_unit & ADC_UNIT_2) {
        gpio_num = ADC_GET_IO_NUM(1, channel);
    }
    TEST_ESP_OK(rtc_gpio_pullup_en(gpio_num));
    TEST_ESP_OK(rtc_gpio_pulldown_dis(gpio_num));
    TEST_ESP_OK(gpio_set_pull_mode(gpio_num, GPIO_PULLUP_ONLY));
}

static void adc_fake_tie_low(adc_unit_t adc_unit, adc_channel_t channel)
{
    gpio_num_t gpio_num = 0;
    if (adc_unit & ADC_UNIT_1) {
        gpio_num = ADC_GET_IO_NUM(0, channel);
    }
    if (adc_unit & ADC_UNIT_2) {
        gpio_num = ADC_GET_IO_NUM(1, channel);
    }
    TEST_ESP_OK(rtc_gpio_pullup_dis(gpio_num));
    TEST_ESP_OK(rtc_gpio_pulldown_en(gpio_num));
    TEST_ESP_OK(gpio_set_pull_mode(gpio_num, GPIO_PULLDOWN_ONLY));
}

static void adc_io_normal(adc_unit_t adc_unit, adc_channel_t channel)
{
    gpio_num_t gpio_num = 0;
    if (adc_unit & ADC_UNIT_1) {
        gpio_num = ADC_GET_IO_NUM(0, channel);
    }
    if (adc_unit & ADC_UNIT_2) {
        gpio_num = ADC_GET_IO_NUM(1, channel);
    }
    TEST_ESP_OK(rtc_gpio_pullup_dis(gpio_num));
    TEST_ESP_OK(rtc_gpio_pulldown_dis(gpio_num));
    TEST_ESP_OK(gpio_set_pull_mode(gpio_num, GPIO_FLOATING));
}

TEST_CASE("ADC1 rtc read", "[adc1]")
{
    int adc1_val[ADC1_TEST_CHANNEL_NUM] = {0};

    /* adc1 Configure */
    adc1_config_width(ADC1_TEST_WIDTH);
    ESP_LOGI(TAG, "ADC1 [CH - GPIO]:");
    for (int i = 0; i < ADC1_TEST_CHANNEL_NUM; i++) {
        TEST_ESP_OK( adc1_config_channel_atten(adc1_ch[i], ADC1_TEST_ATTEN) );
        ESP_LOGI(TAG, "[CH%d - IO%d]:", adc1_ch[i], ADC_GET_IO_NUM(0, adc1_ch[i]));
    }
    printf("ADC tie normal read: ");
    vTaskDelay(10 / portTICK_RATE_MS);

    /* adc Read */
    printf("ADC1: ");
    for (int i = 0; i < ADC1_TEST_CHANNEL_NUM; i++) {
        adc1_val[i] = adc1_get_raw((adc1_channel_t)adc1_ch[i]);
        printf("CH%d-%d ", adc1_ch[i], adc1_val[i]);
    }
    printf("\n");

    /* tie high */
    for (int i = 0; i < ADC1_TEST_CHANNEL_NUM; i++) {
        adc_fake_tie_high(ADC_UNIT_1, adc1_ch[i]);
    }
    printf("ADC tie high read: ");
    vTaskDelay(50 / portTICK_RATE_MS);
    /* adc Read */
    printf("ADC1: ");
    for (int i = 0; i < ADC1_TEST_CHANNEL_NUM; i++) {
        adc1_val[i] = adc1_get_raw((adc1_channel_t)adc1_ch[i]);
        printf("CH%d-%d ", adc1_ch[i], adc1_val[i]);
#ifdef CONFIG_IDF_TARGET_ESP32S2
        TEST_ASSERT_EQUAL( adc1_val[i], 0x1fff );
#endif
    }
    printf("\n");

    /* tie low */
    for (int i = 0; i < ADC1_TEST_CHANNEL_NUM; i++) {
        adc_fake_tie_low(ADC_UNIT_1, adc1_ch[i]);
    }
    printf("ADC tie low  read: ");
    vTaskDelay(50 / portTICK_RATE_MS);
    /* adc Read */
    printf("ADC1: ");
    for (int i = 0; i < ADC1_TEST_CHANNEL_NUM; i++) {
        adc1_val[i] = adc1_get_raw((adc1_channel_t)adc1_ch[i]);
        printf("CH%d-%d ", adc1_ch[i], adc1_val[i]);
#ifdef CONFIG_IDF_TARGET_ESP32S2
        TEST_ASSERT_INT_WITHIN( 100, 0, adc1_val[i] );
#endif
    }
    printf("\n");

    /* tie midedle */
    for (int i = 0; i < ADC1_TEST_CHANNEL_NUM; i++) {
        adc_fake_tie_middle(ADC_UNIT_1, adc1_ch[i]);
    }
    printf("ADC tie mid  read: ");
    vTaskDelay(50 / portTICK_RATE_MS);
    /* adc Read */
    printf("ADC1: ");
    for (int i = 0; i < ADC1_TEST_CHANNEL_NUM; i++) {
        adc1_val[i] = adc1_get_raw((adc1_channel_t)adc1_ch[i]);
        printf("CH%d-%d ", adc1_ch[i], adc1_val[i]);
#ifdef CONFIG_IDF_TARGET_ESP32S2
        TEST_ASSERT_NOT_EQUAL( adc1_val[i], 0 );
#endif
    }
    printf("\n");

    for (int i = 0; i < ADC1_TEST_CHANNEL_NUM; i++) {
        adc_io_normal(ADC_UNIT_1, adc1_ch[i]);
    }
}

TEST_CASE("ADC2 rtc read", "[adc2]")
{
    int adc2_val[ADC2_TEST_CHANNEL_NUM] = {0};

    /* adc2 Configure */
    ESP_LOGI(TAG, "ADC2 [CH - GPIO]:");
    for (int i = 0; i < ADC2_TEST_CHANNEL_NUM; i++) {
        TEST_ESP_OK( adc2_config_channel_atten(adc2_ch[i], ADC2_TEST_ATTEN) );
        ESP_LOGI(TAG, "[CH%d - IO%d]:", adc2_ch[i], ADC_GET_IO_NUM(1, adc2_ch[i]));
    }
    printf("ADC float read: ");
    vTaskDelay(10 / portTICK_RATE_MS);

    /* adc Read */
    printf("ADC2: ");
    for (int i = 0; i < ADC2_TEST_CHANNEL_NUM; i++) {
        TEST_ESP_OK( adc2_get_raw((adc2_channel_t)adc2_ch[i], ADC2_TEST_WIDTH, &adc2_val[i]) );
        printf("CH%d-%d ", adc2_ch[i], adc2_val[i]);
    }
    printf("\n");

    /* tie high */
    for (int i = 0; i < ADC2_TEST_CHANNEL_NUM; i++) {
        adc_fake_tie_high(ADC_UNIT_2, adc2_ch[i]);
    }
    printf("ADC tie high read: ");
    vTaskDelay(10 / portTICK_RATE_MS);
    /* adc Read */
    printf("ADC2: ");
    for (int i = 0; i < ADC2_TEST_CHANNEL_NUM; i++) {
        TEST_ESP_OK( adc2_get_raw((adc2_channel_t)adc2_ch[i], ADC2_TEST_WIDTH, &adc2_val[i]) );
        printf("CH%d-%d ", adc2_ch[i], adc2_val[i]);
#ifdef CONFIG_IDF_TARGET_ESP32S2
        TEST_ASSERT_EQUAL( adc2_val[i], 0x1fff );
#endif
    }
    printf("\n");

    /* tie low */
    for (int i = 0; i < ADC2_TEST_CHANNEL_NUM; i++) {
        adc_fake_tie_low(ADC_UNIT_2, adc2_ch[i]);
    }
    printf("ADC tie low read: ");
    vTaskDelay(10 / portTICK_RATE_MS);
    /* adc Read */
    printf("ADC2: ");
    for (int i = 0; i < ADC2_TEST_CHANNEL_NUM; i++) {
        TEST_ESP_OK( adc2_get_raw((adc2_channel_t)adc2_ch[i], ADC2_TEST_WIDTH, &adc2_val[i]) );
        printf("CH%d-%d ", adc2_ch[i], adc2_val[i]);
#ifdef CONFIG_IDF_TARGET_ESP32S2
        TEST_ASSERT_INT_WITHIN( 100, 0, adc2_val[i] );
#endif
    }
    printf("\n");

    /* tie midedle */
    for (int i = 0; i < ADC2_TEST_CHANNEL_NUM; i++) {
        adc_fake_tie_middle(ADC_UNIT_2, adc2_ch[i]);
    }
    printf("ADC tie middle read: ");
    vTaskDelay(10 / portTICK_RATE_MS);
    /* adc Read */
    printf("ADC2: ");
    for (int i = 0; i < ADC2_TEST_CHANNEL_NUM; i++) {
        TEST_ESP_OK( adc2_get_raw((adc2_channel_t)adc2_ch[i], ADC2_TEST_WIDTH, &adc2_val[i]) );
        printf("CH%d-%d ", adc2_ch[i], adc2_val[i]);
#ifdef CONFIG_IDF_TARGET_ESP32S2
        TEST_ASSERT_NOT_EQUAL( 0, adc2_val[i]  );
        TEST_ASSERT_NOT_EQUAL( 0x1fff, adc2_val[i]  );
#endif
    }
    printf("\n");

    for (int i = 0; i < ADC1_TEST_CHANNEL_NUM; i++) {
        adc_io_normal(ADC_UNIT_1, adc1_ch[i]);
    }
}