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esp-idf/components/driver/test/test_i2s.c
houwenxiang b35d9002f3 driver(I2S): Fix i2s_comm_format_t configuration parameter does not match the TRM bug. 
When I2S `i2s_comm_format_t` is set to `I2S_COMM_FORMAT_I2S_MSB`, the data should launch at first BCK. But not in fact, this MR fixed this issue.

For compatibility, several nwe parameters have been added, and the old parameters will be removed in the future.

    closes https://github.com/espressif/esp-idf/issues/5065

    closes https://github.com/espressif/esp-idf/issues/4957

    closes https://github.com/espressif/esp-idf/issues/2978

    closes https://github.com/espressif/esp-idf/issues/5136

    Merges https://github.com/espressif/esp-idf/pull/4522
2020-05-18 19:55:30 +08:00

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/**
* I2S test environment UT_T1_I2S:
* We use internal signals instead of external wiring, but please keep the following IO connections, or connect nothing to prevent the signal from being disturbed.
* connect GPIO15 and GPIO19, GPIO25(ESP32)/GPIO17(ESP32-S2) and GPIO26, GPIO21 and GPIO22(ESP32)/GPIO20(ESP32-S2)
* Please do not connect GPIO32(ESP32) any pull-up resistors externally, it will be used to test i2s adc function.
*/
#include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/i2s.h"
#include "driver/gpio.h"
#include "unity.h"
#include "math.h"
#define SAMPLE_RATE (36000)
#define SAMPLE_BITS (16)
#define MASTER_BCK_IO 15
#define SLAVE_BCK_IO 19
#define SLAVE_WS_IO 26
#define DATA_IN_IO 21
#if CONFIG_IDF_TARGET_ESP32
#define MASTER_WS_IO 25
#define DATA_OUT_IO 22
#define ADC1_CHANNEL_4_IO 32
#elif CONFIG_IDF_TARGET_ESP32S2
#define MASTER_WS_IO 28
#define DATA_OUT_IO 20
#endif
#define PERCENT_DIFF 0.0001
#define I2S_TEST_MODE_SLAVE_TO_MAXTER 0
#define I2S_TEST_MODE_MASTER_TO_SLAVE 1
#define I2S_TEST_MODE_LOOPBACK 2
// mode: 0, master rx, slave tx. mode: 1, master tx, slave rx. mode: 2, master tx rx loopback
// Since ESP32-S2 has only one I2S, only loop back test can be tested.
static void i2s_test_io_config(int mode)
{
// Connect internal signals using IO matrix.
PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[MASTER_BCK_IO], PIN_FUNC_GPIO);
PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[MASTER_WS_IO], PIN_FUNC_GPIO);
PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[DATA_OUT_IO], PIN_FUNC_GPIO);
gpio_set_direction(MASTER_BCK_IO, GPIO_MODE_INPUT_OUTPUT);
gpio_set_direction(MASTER_WS_IO, GPIO_MODE_INPUT_OUTPUT);
gpio_set_direction(DATA_OUT_IO, GPIO_MODE_INPUT_OUTPUT);
switch (mode) {
#if SOC_I2S_NUM > 1
case I2S_TEST_MODE_SLAVE_TO_MAXTER: {
gpio_matrix_out(MASTER_BCK_IO, I2S0I_BCK_OUT_IDX, 0, 0);
gpio_matrix_in(MASTER_BCK_IO, I2S1O_BCK_IN_IDX, 0);
gpio_matrix_out(MASTER_WS_IO, I2S0I_WS_OUT_IDX, 0, 0);
gpio_matrix_in(MASTER_WS_IO, I2S1O_WS_IN_IDX, 0);
gpio_matrix_out(DATA_OUT_IO, I2S1O_DATA_OUT23_IDX, 0, 0);
gpio_matrix_in(DATA_OUT_IO, I2S0I_DATA_IN15_IDX, 0);
}
break;
case I2S_TEST_MODE_MASTER_TO_SLAVE: {
gpio_matrix_out(MASTER_BCK_IO, I2S0O_BCK_OUT_IDX, 0, 0);
gpio_matrix_in(MASTER_BCK_IO, I2S1I_BCK_IN_IDX, 0);
gpio_matrix_out(MASTER_WS_IO, I2S0O_WS_OUT_IDX, 0, 0);
gpio_matrix_in(MASTER_WS_IO, I2S1I_WS_IN_IDX, 0);
gpio_matrix_out(DATA_OUT_IO, I2S0O_DATA_OUT23_IDX, 0, 0);
gpio_matrix_in(DATA_OUT_IO, I2S1I_DATA_IN15_IDX, 0);
}
break;
#endif
case I2S_TEST_MODE_LOOPBACK: {
gpio_matrix_out(DATA_OUT_IO, I2S0O_DATA_OUT23_IDX, 0, 0);
gpio_matrix_in(DATA_OUT_IO, I2S0I_DATA_IN15_IDX, 0);
}
break;
default: {
TEST_FAIL_MESSAGE("error: mode not supported");
}
break;
}
}
/**
* i2s initialize test
* 1. i2s_driver_install
* 2. i2s_set_pin
*/
TEST_CASE("I2S basic driver install, uninstall, set pin test", "[i2s]")
{
// dac, adc i2s
i2s_config_t i2s_config = {
.mode = I2S_MODE_MASTER | I2S_MODE_TX,
.sample_rate = SAMPLE_RATE,
.bits_per_sample = SAMPLE_BITS,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = I2S_COMM_FORMAT_STAND_I2S,
.dma_buf_count = 6,
.dma_buf_len = 60,
.use_apll = 0,
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1 ,
};
#if CONFIG_IDF_TARGET_ESP32
//install and start i2s driver
TEST_ESP_OK(i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL));
//for internal DAC, this will enable both of the internal channels
TEST_ESP_OK(i2s_set_pin(I2S_NUM_0, NULL));
//stop & destroy i2s driver
TEST_ESP_OK(i2s_driver_uninstall(I2S_NUM_0));
#endif
// normal i2s
i2s_pin_config_t pin_config = {
.bck_io_num = MASTER_BCK_IO,
.ws_io_num = MASTER_WS_IO,
.data_out_num = DATA_OUT_IO,
.data_in_num = -1
};
TEST_ESP_OK(i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL));
TEST_ESP_OK(i2s_set_pin(I2S_NUM_0, &pin_config));
TEST_ESP_OK(i2s_driver_uninstall(I2S_NUM_0));
//error param test
TEST_ASSERT(i2s_driver_install(I2S_NUM_MAX, &i2s_config, 0, NULL) == ESP_ERR_INVALID_ARG);
TEST_ASSERT(i2s_driver_install(I2S_NUM_0, NULL, 0, NULL) == ESP_ERR_INVALID_ARG);
i2s_config.dma_buf_count = 1;
TEST_ASSERT(i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL) == ESP_ERR_INVALID_ARG);
i2s_config.dma_buf_count = 129;
TEST_ASSERT(i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL) == ESP_ERR_INVALID_ARG);
TEST_ESP_OK(i2s_driver_uninstall(I2S_NUM_0));
}
TEST_CASE("I2S Loopback test(master tx and rx)", "[i2s]")
{
// master driver installed and send data
i2s_config_t master_i2s_config = {
.mode = I2S_MODE_MASTER | I2S_MODE_TX | I2S_MODE_RX,
.sample_rate = SAMPLE_RATE,
.bits_per_sample = SAMPLE_BITS,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = I2S_COMM_FORMAT_STAND_I2S,
.dma_buf_count = 6,
.dma_buf_len = 100,
.use_apll = 0,
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1 ,
};
i2s_pin_config_t master_pin_config = {
.bck_io_num = MASTER_BCK_IO,
.ws_io_num = MASTER_WS_IO,
.data_out_num = DATA_OUT_IO,
.data_in_num = DATA_IN_IO
};
TEST_ESP_OK(i2s_driver_install(I2S_NUM_0, &master_i2s_config, 0, NULL));
TEST_ESP_OK(i2s_set_pin(I2S_NUM_0, &master_pin_config));
i2s_test_io_config(I2S_TEST_MODE_LOOPBACK);
printf("\r\nheap size: %d\n", esp_get_free_heap_size());
uint8_t* data_wr = (uint8_t*)malloc(sizeof(uint8_t)*400);
size_t i2s_bytes_write = 0;
size_t bytes_read = 0;
int length = 0;
uint8_t *i2s_read_buff = (uint8_t*)malloc(sizeof(uint8_t)*10000);
for(int i=0; i<100; i++) {
data_wr[i] = i+1;
}
int flag=0; // break loop flag
int end_position = 0;
// write data to slave
i2s_write(I2S_NUM_0, data_wr, sizeof(uint8_t)*400, &i2s_bytes_write, 1000 / portTICK_PERIOD_MS);
while(!flag){
if (length >= 10000 - 500) {
break;
}
i2s_read(I2S_NUM_0, i2s_read_buff + length, sizeof(uint8_t)*500, &bytes_read, 1000/portMAX_DELAY);
if(bytes_read>0) {
printf("read data size: %d\n", bytes_read);
for(int i=length; i<length + bytes_read; i++) {
if(i2s_read_buff[i] == 100) {
flag=1;
end_position = i;
break;
}
}
}
length = length + bytes_read;
}
// test the read data right or not
for(int i=end_position-99; i<=end_position; i++) {
TEST_ASSERT_EQUAL_UINT8((i-end_position+100), *(i2s_read_buff + i));
}
free(data_wr);
free(i2s_read_buff);
i2s_driver_uninstall(I2S_NUM_0);
}
#if !DISABLED_FOR_TARGETS(ESP32S2)
/* ESP32S2 has only single I2S port and hence following test cases are not applicable */
TEST_CASE("I2S adc test", "[i2s]")
{
// init I2S ADC
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);
// init read buffer
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);
}
}
}
i2s_adc_disable(I2S_NUM_0);
free(i2sReadBuffer);
i2s_driver_uninstall(I2S_NUM_0);
}
TEST_CASE("I2S write and read test(master tx and slave rx)", "[i2s]")
{
// master driver installed and send data
i2s_config_t master_i2s_config = {
.mode = I2S_MODE_MASTER | I2S_MODE_TX,
.sample_rate = SAMPLE_RATE,
.bits_per_sample = SAMPLE_BITS,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = I2S_COMM_FORMAT_STAND_I2S,
.dma_buf_count = 6,
.dma_buf_len = 100,
.use_apll = 0,
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1 ,
};
i2s_pin_config_t master_pin_config = {
.bck_io_num = MASTER_BCK_IO,
.ws_io_num = MASTER_WS_IO,
.data_out_num = DATA_OUT_IO,
.data_in_num = -1
};
TEST_ESP_OK(i2s_driver_install(I2S_NUM_0, &master_i2s_config, 0, NULL));
TEST_ESP_OK(i2s_set_pin(I2S_NUM_0, &master_pin_config));
i2s_test_io_config(I2S_TEST_MODE_MASTER_TO_SLAVE);
printf("\r\nheap size: %d\n", esp_get_free_heap_size());
i2s_config_t slave_i2s_config = {
.mode = I2S_MODE_SLAVE | I2S_MODE_RX,
.sample_rate = SAMPLE_RATE,
.bits_per_sample = SAMPLE_BITS,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = I2S_COMM_FORMAT_STAND_I2S,
.dma_buf_count = 6,
.dma_buf_len = 100,
.use_apll = 0,
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1 ,
};
i2s_pin_config_t slave_pin_config = {
.bck_io_num = SLAVE_BCK_IO,
.ws_io_num = SLAVE_WS_IO,
.data_out_num = -1,
.data_in_num = DATA_IN_IO,
};
// slave driver installed and receive data
TEST_ESP_OK(i2s_driver_install(I2S_NUM_1, &slave_i2s_config, 0, NULL));
TEST_ESP_OK(i2s_set_pin(I2S_NUM_1, &slave_pin_config));
i2s_test_io_config(I2S_TEST_MODE_MASTER_TO_SLAVE);
printf("\r\nheap size: %d\n", esp_get_free_heap_size());
uint8_t* data_wr = (uint8_t*)malloc(sizeof(uint8_t)*400);
size_t i2s_bytes_write = 0;
size_t bytes_read = 0;
int length = 0;
uint8_t *i2s_read_buff = (uint8_t*)malloc(sizeof(uint8_t)*10000);
for(int i=0; i<100; i++) {
data_wr[i] = i+1;
}
int flag=0; // break loop flag
int end_position = 0;
// write data to slave
i2s_write(I2S_NUM_0, data_wr, sizeof(uint8_t)*400, &i2s_bytes_write, 1000 / portTICK_PERIOD_MS);
while(!flag){
i2s_read(I2S_NUM_1, i2s_read_buff + length, sizeof(uint8_t)*500, &bytes_read, 1000/portMAX_DELAY);
if(bytes_read>0) {
printf("read data size: %d\n", bytes_read);
for(int i=length; i<length + bytes_read; i++) {
if(i2s_read_buff[i] == 100) {
flag=1;
end_position = i;
break;
}
}
}
length = length + bytes_read;
}
// test the readed data right or not
for(int i=end_position-99; i<=end_position; i++) {
TEST_ASSERT_EQUAL_UINT8((i-end_position+100), *(i2s_read_buff + i));
}
free(data_wr);
free(i2s_read_buff);
i2s_driver_uninstall(I2S_NUM_0);
i2s_driver_uninstall(I2S_NUM_1);
}
TEST_CASE("I2S write and read test(master rx and slave tx)", "[i2s]")
{
// master driver installed and send data
i2s_config_t master_i2s_config = {
.mode = I2S_MODE_MASTER | I2S_MODE_RX,
.sample_rate = SAMPLE_RATE,
.bits_per_sample = SAMPLE_BITS,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = I2S_COMM_FORMAT_STAND_I2S,
.dma_buf_count = 6,
.dma_buf_len = 100,
.use_apll = 1,
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1 ,
};
i2s_pin_config_t master_pin_config = {
.bck_io_num = MASTER_BCK_IO,
.ws_io_num = MASTER_WS_IO,
.data_out_num = -1,
.data_in_num = DATA_IN_IO,
};
TEST_ESP_OK(i2s_driver_install(I2S_NUM_0, &master_i2s_config, 0, NULL));
TEST_ESP_OK(i2s_set_pin(I2S_NUM_0, &master_pin_config));
i2s_test_io_config(I2S_TEST_MODE_SLAVE_TO_MAXTER);
printf("\r\nheap size: %d\n", esp_get_free_heap_size());
i2s_config_t slave_i2s_config = {
.mode = I2S_MODE_SLAVE | I2S_MODE_TX, // Only RX
.sample_rate = SAMPLE_RATE,
.bits_per_sample = SAMPLE_BITS,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT, //2-channels
.communication_format = I2S_COMM_FORMAT_STAND_I2S,
.dma_buf_count = 6,
.dma_buf_len = 100,
.use_apll = 1,
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1 ,
};
i2s_pin_config_t slave_pin_config = {
.bck_io_num = SLAVE_BCK_IO,
.ws_io_num = SLAVE_WS_IO,
.data_out_num = DATA_OUT_IO,
.data_in_num = -1
};
// slave driver installed and receive data
TEST_ESP_OK(i2s_driver_install(I2S_NUM_1, &slave_i2s_config, 0, NULL));
TEST_ESP_OK(i2s_set_pin(I2S_NUM_1, &slave_pin_config));
i2s_test_io_config(I2S_TEST_MODE_SLAVE_TO_MAXTER);
uint8_t* data_wr = (uint8_t*)malloc(sizeof(uint8_t)*400);
size_t i2s_bytes_write = 0;
size_t bytes_read = 0;
int length = 0;
uint8_t *i2s_read_buff = (uint8_t*)malloc(sizeof(uint8_t)*100000);
for(int i=0; i<100; i++) {
data_wr[i] = i+1;
}
// slave write data to master
i2s_write(I2S_NUM_1, data_wr, sizeof(uint8_t)*400, &i2s_bytes_write, 1000 / portTICK_PERIOD_MS);
int flag=0; // break loop flag
int end_position = 0;
// write data to slave
while(!flag){
TEST_ESP_OK(i2s_read(I2S_NUM_0, i2s_read_buff + length, 10000-length, &bytes_read, 1000/portMAX_DELAY));
if(bytes_read > 0) {
for(int i=length; i<length+bytes_read; i++) {
if(i2s_read_buff[i] == 100) {
flag=1;
end_position = i;
break;
}
}
}
length = length + bytes_read;
}
// test the readed data right or not
for(int i=end_position-99; i<=end_position; i++) {
TEST_ASSERT_EQUAL_UINT8((i-end_position+100), *(i2s_read_buff + i));
}
free(data_wr);
free(i2s_read_buff);
i2s_driver_uninstall(I2S_NUM_0);
i2s_driver_uninstall(I2S_NUM_1);
}
#endif
TEST_CASE("I2S memory leaking test", "[i2s]")
{
i2s_config_t master_i2s_config = {
.mode = I2S_MODE_MASTER | I2S_MODE_RX,
.sample_rate = SAMPLE_RATE,
.bits_per_sample = SAMPLE_BITS,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = I2S_COMM_FORMAT_STAND_I2S,
.dma_buf_count = 6,
.dma_buf_len = 100,
.use_apll = 0,
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1 ,
};
i2s_pin_config_t master_pin_config = {
.bck_io_num = MASTER_BCK_IO,
.ws_io_num = MASTER_WS_IO,
.data_out_num = -1,
.data_in_num = DATA_IN_IO
};
TEST_ESP_OK(i2s_driver_install(I2S_NUM_0, &master_i2s_config, 0, NULL));
TEST_ESP_OK(i2s_set_pin(I2S_NUM_0, &master_pin_config));
i2s_driver_uninstall(I2S_NUM_0);
int initial_size = esp_get_free_heap_size();
for(int i=0; i<100; i++) {
TEST_ESP_OK(i2s_driver_install(I2S_NUM_0, &master_i2s_config, 0, NULL));
TEST_ESP_OK(i2s_set_pin(I2S_NUM_0, &master_pin_config));
i2s_driver_uninstall(I2S_NUM_0);
TEST_ASSERT(initial_size == esp_get_free_heap_size());
}
vTaskDelay(100 / portTICK_PERIOD_MS);
TEST_ASSERT(initial_size == esp_get_free_heap_size());
}
/*
* The I2S APLL clock variation test used to test the difference between the different sample rates, different bits per sample
* and the APLL clock generate for it. The TEST_CASE passes PERCENT_DIFF variation from the provided sample rate in APLL generated clock
* The percentage difference calculated as (mod((obtained clock rate - desired clock rate)/(desired clock rate))) * 100.
*/
TEST_CASE("I2S APLL clock variation test", "[i2s]")
{
i2s_pin_config_t pin_config = {
.bck_io_num = MASTER_BCK_IO,
.ws_io_num = MASTER_WS_IO,
.data_out_num = DATA_OUT_IO,
.data_in_num = -1
};
i2s_config_t i2s_config = {
.mode = I2S_MODE_MASTER | I2S_MODE_TX,
.sample_rate = SAMPLE_RATE,
.bits_per_sample = SAMPLE_BITS,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = I2S_COMM_FORMAT_STAND_I2S,
.dma_buf_count = 6,
.dma_buf_len = 60,
.use_apll = true,
.intr_alloc_flags = 0,
};
TEST_ESP_OK(i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL));
TEST_ESP_OK(i2s_set_pin(I2S_NUM_0, &pin_config));
TEST_ESP_OK(i2s_driver_uninstall(I2S_NUM_0));
int initial_size = esp_get_free_heap_size();
uint32_t sample_rate_arr[8] = { 10675, 11025, 16000, 22050, 32000, 44100, 48000, 96000 };
int bits_per_sample_arr[3] = { 16, 24, 32 };
for (int i = 0; i < (sizeof(sample_rate_arr)/sizeof(sample_rate_arr[0])); i++) {
for (int j = 0; j < (sizeof(bits_per_sample_arr)/sizeof(bits_per_sample_arr[0])); j++) {
i2s_config.sample_rate = sample_rate_arr[i];
i2s_config.bits_per_sample = bits_per_sample_arr[j];
TEST_ESP_OK(i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL));
TEST_ESP_OK(i2s_set_pin(I2S_NUM_0, &pin_config));
TEST_ASSERT((fabs((i2s_get_clk(I2S_NUM_0) - sample_rate_arr[i]))/(sample_rate_arr[i]))*100 < PERCENT_DIFF);
TEST_ESP_OK(i2s_driver_uninstall(I2S_NUM_0));
TEST_ASSERT(initial_size == esp_get_free_heap_size());
}
}
vTaskDelay(100 / portTICK_PERIOD_MS);
TEST_ASSERT(initial_size == esp_get_free_heap_size());
}
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