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adc_i2s: solve the i2s_adc issue when using wifi

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This commit is contained in:
Cao Sen Miao
2020-12-03 13:58:24 +08:00
parent d890a516a1
commit d6f0b4af6f
6 changed files with 205 additions and 28 deletions
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114
components/driver/test/test_adc2_with_wifi.c
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@@ -10,6 +10,8 @@
#include "esp_log.h"
#include "nvs_flash.h"
#include "test_utils.h"
#include "driver/i2s.h"
#include "driver/gpio.h"
#if !TEMPORARY_DISABLED_FOR_TARGETS(ESP32S3, ESP32C3)
#include "driver/dac.h"
@@ -23,6 +25,9 @@ static const char* TAG = "test_adc2";
#define ADC_TEST_CH1 ADC2_CHANNEL_8
#define ADC_TEST_CH2 ADC2_CHANNEL_9
#define ADC_TEST_ERROR (600)
#define ADC1_CHANNEL_4_IO (32)
#define SAMPLE_RATE (36000)
#define SAMPLE_BITS (16)
#elif defined CONFIG_IDF_TARGET_ESP32S2
#define ADC_TEST_WIDTH ADC_WIDTH_BIT_13 //ESP32S2 only support 13 bit width
#define ADC_TEST_RESOLUTION (8192)
@@ -169,3 +174,112 @@ TEST_CASE("adc2 work with wifi","[adc]")
}
#endif
#ifdef CONFIG_IDF_TARGET_ESP32
static void i2s_adc_init(void)
{
i2s_config_t i2s_config = {
.mode = I2S_MODE_MASTER | I2S_MODE_RX | I2S_MODE_ADC_BUILT_IN,
.sample_rate = SAMPLE_RATE,
.bits_per_sample = SAMPLE_BITS,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.intr_alloc_flags = 0,
.dma_buf_count = 2,
.dma_buf_len = 1024,
.use_apll = 0,
};
// install and start I2S driver
i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL);
// init ADC pad
i2s_set_adc_mode(ADC_UNIT_1, ADC1_CHANNEL_4);
// enable adc sampling, ADC_WIDTH_BIT_12, ADC_ATTEN_DB_11 hard-coded in adc_i2s_mode_init
i2s_adc_enable(I2S_NUM_0);
}
static void i2s_adc_test(void)
{
uint16_t *i2sReadBuffer = (uint16_t *)calloc(1024, sizeof(uint16_t));
size_t bytesRead;
for (int loop = 0; loop < 10; loop++) {
for (int level = 0; level <= 1; level++) {
if (level == 0) {
gpio_set_pull_mode(ADC1_CHANNEL_4_IO, GPIO_PULLDOWN_ONLY);
} else {
gpio_set_pull_mode(ADC1_CHANNEL_4_IO, GPIO_PULLUP_ONLY);
}
vTaskDelay(200 / portTICK_RATE_MS);
// read data from adc, will block until buffer is full
i2s_read(I2S_NUM_0, (void *)i2sReadBuffer, 1024 * sizeof(uint16_t), &bytesRead, portMAX_DELAY);
// calc average
int64_t adcSumValue = 0;
for (size_t i = 0; i < 1024; i++) {
adcSumValue += i2sReadBuffer[i] & 0xfff;
}
int adcAvgValue = adcSumValue / 1024;
printf("adc average val: %d\n", adcAvgValue);
if (level == 0) {
TEST_ASSERT_LESS_THAN(100, adcAvgValue);
} else {
TEST_ASSERT_GREATER_THAN(4000, adcAvgValue);
}
}
}
free(i2sReadBuffer);
}
static void i2s_adc_release(void)
{
i2s_adc_disable(I2S_NUM_0);
i2s_driver_uninstall(I2S_NUM_0);
}
TEST_CASE("adc1 and i2s work with wifi","[adc][ignore]")
{
i2s_adc_init();
//init wifi
printf("nvs init\n");
esp_err_t r = nvs_flash_init();
if (r == ESP_ERR_NVS_NO_FREE_PAGES || r == ESP_ERR_NVS_NEW_VERSION_FOUND) {
printf("no free pages or nvs version mismatch, erase..\n");
TEST_ESP_OK(nvs_flash_erase());
r = nvs_flash_init();
}
TEST_ESP_OK(r);
esp_netif_init();
event_init();
esp_netif_create_default_wifi_sta();
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
TEST_ESP_OK(esp_wifi_init(&cfg));
wifi_config_t wifi_config = {
.sta = {
.ssid = DEFAULT_SSID,
.password = DEFAULT_PWD
},
};
TEST_ESP_OK(esp_wifi_set_mode(WIFI_MODE_STA));
TEST_ESP_OK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config));
i2s_adc_test();
//now start wifi
printf("wifi start...\n");
TEST_ESP_OK(esp_wifi_start());
//test reading during wifi on
i2s_adc_test();
//wifi stop again
printf("wifi stop...\n");
TEST_ESP_OK( esp_wifi_stop() );
TEST_ESP_OK(esp_wifi_deinit());
event_deinit();
nvs_flash_deinit();
i2s_adc_test();
i2s_adc_release();
printf("test passed...\n");
TEST_IGNORE_MESSAGE("this test case is ignored due to the critical memory leak of esp_netif and event_loop.");
}
#endif