307 lines
12 KiB
C
307 lines
12 KiB
C
/**
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* test environment UT_T2_I2C:
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* please prepare two ESP32-WROVER-KIT board.
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* Then connect GPIO18 and GPIO18, GPIO19 and GPIO19 between these two boards.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "unity.h"
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#include "test_utils.h"
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#include "unity_config.h"
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#include "driver/i2c.h"
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#include "esp_attr.h"
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#include "esp_log.h"
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#include "soc/gpio_periph.h"
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#include "soc/i2c_periph.h"
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#include "esp_system.h"
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#include "driver/pcnt.h"
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#define DATA_LENGTH 512 /*!<Data buffer length for test buffer*/
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#define RW_TEST_LENGTH 129 /*!<Data length for r/w test, any value from 0-DATA_LENGTH*/
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#define DELAY_TIME_BETWEEN_ITEMS_MS 1234 /*!< delay time between different test items */
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#define I2C_SLAVE_SCL_IO 19 /*!<gpio number for i2c slave clock */
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#define I2C_SLAVE_SDA_IO 18 /*!<gpio number for i2c slave data */
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#define I2C_SLAVE_NUM I2C_NUM_0 /*!<I2C port number for slave dev */
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#define I2C_SLAVE_TX_BUF_LEN (2*DATA_LENGTH) /*!<I2C slave tx buffer size */
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#define I2C_SLAVE_RX_BUF_LEN (2*DATA_LENGTH) /*!<I2C slave rx buffer size */
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#define I2C_MASTER_SCL_IO 19 /*!< gpio number for I2C master clock */
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#define I2C_MASTER_SDA_IO 18 /*!< gpio number for I2C master data */
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#define I2C_MASTER_NUM I2C_NUM_1 /*!< I2C port number for master dev */
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#define I2C_MASTER_TX_BUF_DISABLE 0 /*!< I2C master do not need buffer */
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#define I2C_MASTER_RX_BUF_DISABLE 0 /*!< I2C master do not need buffer */
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#define I2C_MASTER_FREQ_HZ 100000 /*!< I2C master clock frequency */
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#define ESP_SLAVE_ADDR 0x28 /*!< ESP32 slave address, you can set any 7bit value */
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#define WRITE_BIT I2C_MASTER_WRITE /*!< I2C master write */
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#define READ_BIT I2C_MASTER_READ /*!< I2C master read */
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#define ACK_CHECK_EN 0x1 /*!< I2C master will check ack from slave*/
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#define ACK_CHECK_DIS 0x0 /*!< I2C master will not check ack from slave */
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#define ACK_VAL 0x0 /*!< I2C ack value */
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#define NACK_VAL 0x1 /*!< I2C nack value */
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#define PULSE_IO 19
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#define PCNT_INPUT_IO 4
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#define PCNT_CTRL_FLOATING_IO 5
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#define HIGHEST_LIMIT 10000
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#define LOWEST_LIMIT -10000
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static DRAM_ATTR i2c_dev_t *const I2C[I2C_NUM_MAX] = { &I2C0, &I2C1 };
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static esp_err_t i2c_master_write_slave(i2c_port_t i2c_num, uint8_t *data_wr, size_t size)
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{
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i2c_cmd_handle_t cmd = i2c_cmd_link_create();
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i2c_master_start(cmd);
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TEST_ESP_OK(i2c_master_write_byte(cmd, ( ESP_SLAVE_ADDR << 1 ) | WRITE_BIT, ACK_CHECK_EN));
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TEST_ESP_OK(i2c_master_write(cmd, data_wr, size, ACK_CHECK_EN));
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TEST_ESP_OK(i2c_master_stop(cmd));
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esp_err_t ret = i2c_master_cmd_begin(i2c_num, cmd, 5000 / portTICK_RATE_MS);
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i2c_cmd_link_delete(cmd);
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return ret;
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}
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static i2c_config_t i2c_master_init(void)
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{
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i2c_config_t conf_master = {
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.mode = I2C_MODE_MASTER,
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.sda_pullup_en = GPIO_PULLUP_ENABLE,
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.scl_pullup_en = GPIO_PULLUP_ENABLE,
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.master.clk_speed = I2C_MASTER_FREQ_HZ,
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.sda_io_num = I2C_MASTER_SDA_IO,
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.scl_io_num = I2C_MASTER_SCL_IO,
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};
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return conf_master;
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}
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static i2c_config_t i2c_slave_init(void)
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{
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i2c_config_t conf_slave = {
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.mode = I2C_MODE_SLAVE,
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.sda_io_num = I2C_SLAVE_SDA_IO,
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.scl_io_num = I2C_SLAVE_SCL_IO,
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.sda_pullup_en = GPIO_PULLUP_ENABLE,
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.scl_pullup_en = GPIO_PULLUP_ENABLE,
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.slave.addr_10bit_en = 0,
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.slave.slave_addr = ESP_SLAVE_ADDR,
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};
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return conf_slave;
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}
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TEST_CASE("I2C config test", "[i2c]")
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{
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// master test
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i2c_config_t conf_master = i2c_master_init();
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gpio_pullup_t sda_pull_up_en[2] = {GPIO_PULLUP_DISABLE, GPIO_PULLUP_ENABLE};
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gpio_pullup_t scl_pull_up_en[2] = {GPIO_PULLUP_DISABLE, GPIO_PULLUP_ENABLE};
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for (int i = 0; i < 2; i++) {
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for (int j = 0; j < 2; j++) {
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conf_master.sda_pullup_en = sda_pull_up_en[i];
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conf_master.scl_pullup_en = scl_pull_up_en[j];
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TEST_ESP_OK(i2c_driver_install(I2C_MASTER_NUM, I2C_MODE_MASTER,
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I2C_MASTER_RX_BUF_DISABLE,
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I2C_MASTER_TX_BUF_DISABLE, 0));
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TEST_ESP_OK(i2c_param_config(I2C_MASTER_NUM, &conf_master));
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TEST_ASSERT_EQUAL_INT32(I2C[I2C_MASTER_NUM]->ctr.ms_mode, 1);
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TEST_ESP_OK(i2c_driver_delete(I2C_MASTER_NUM));
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}
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}
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// slave test
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i2c_config_t conf_slave = i2c_slave_init();
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for (int i = 0; i < 2; i++) {
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for (int j = 0; j < 2; j++) {
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conf_slave.sda_pullup_en = sda_pull_up_en[i];
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conf_slave.scl_pullup_en = scl_pull_up_en[j];
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TEST_ESP_OK(i2c_driver_install(I2C_SLAVE_NUM, I2C_MODE_SLAVE,
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I2C_SLAVE_RX_BUF_LEN,
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I2C_SLAVE_TX_BUF_LEN, 0));
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TEST_ESP_OK(i2c_param_config( I2C_SLAVE_NUM, &conf_slave));
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TEST_ASSERT_EQUAL_INT32(I2C[I2C_SLAVE_NUM] -> ctr.ms_mode, 0);
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TEST_ESP_OK(i2c_driver_delete(I2C_SLAVE_NUM));
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}
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}
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}
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TEST_CASE("I2C set and get period test", "[i2c]")
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{
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int high_period, low_period;
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i2c_config_t conf_master = i2c_master_init();
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TEST_ESP_OK(i2c_driver_install(I2C_MASTER_NUM, I2C_MODE_MASTER,
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I2C_MASTER_RX_BUF_DISABLE,
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I2C_MASTER_TX_BUF_DISABLE, 0));
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TEST_ESP_OK(i2c_param_config(I2C_MASTER_NUM, &conf_master));
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TEST_ESP_OK(i2c_set_period(I2C_MASTER_NUM, I2C_SCL_HIGH_PERIOD_V, I2C_SCL_HIGH_PERIOD_V));
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TEST_ESP_OK(i2c_get_period(I2C_MASTER_NUM, &high_period, &low_period));
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TEST_ASSERT_EQUAL_INT(I2C_SCL_HIGH_PERIOD_V, high_period);
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TEST_ASSERT_EQUAL_INT(I2C_SCL_HIGH_PERIOD_V, low_period);
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TEST_ASSERT_NOT_NULL((void *)i2c_set_period(I2C_MASTER_NUM, I2C_SCL_HIGH_PERIOD_V + 1, I2C_SCL_HIGH_PERIOD_V + 1));
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TEST_ESP_OK(i2c_set_period(I2C_MASTER_NUM, 300, 400));
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TEST_ESP_OK(i2c_get_period(I2C_MASTER_NUM, &high_period, &low_period));
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TEST_ASSERT_EQUAL_INT(300, high_period);
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TEST_ASSERT_EQUAL_INT(400, low_period);
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TEST_ESP_OK(i2c_driver_delete(I2C_MASTER_NUM));
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}
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TEST_CASE("I2C config FIFO test", "[i2c]")
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{
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i2c_config_t conf_slave = i2c_slave_init();
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TEST_ESP_OK(i2c_driver_install(I2C_SLAVE_NUM, I2C_MODE_SLAVE,
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I2C_SLAVE_RX_BUF_LEN,
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I2C_SLAVE_TX_BUF_LEN, 0));
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TEST_ESP_OK(i2c_param_config( I2C_SLAVE_NUM, &conf_slave));
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TEST_ASSERT_BIT_LOW(1, I2C[I2C_SLAVE_NUM]->fifo_conf.tx_fifo_rst);
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TEST_ESP_OK(i2c_reset_tx_fifo(I2C_SLAVE_NUM));
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TEST_ASSERT_BIT_LOW(0, I2C[I2C_SLAVE_NUM]->fifo_conf.tx_fifo_rst);
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TEST_ESP_OK(i2c_reset_rx_fifo(I2C_SLAVE_NUM));
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TEST_ASSERT_BIT_LOW(0, I2C[I2C_SLAVE_NUM]->fifo_conf.rx_fifo_rst);
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TEST_ESP_OK(i2c_driver_delete(I2C_SLAVE_NUM));
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}
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TEST_CASE("I2C timing test", "[i2c]")
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{
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int test_setup_time, test_data_time, test_stop_time, test_hold_time;
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uint8_t *data_wr = (uint8_t *) malloc(DATA_LENGTH);
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i2c_config_t conf_master = i2c_master_init();
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TEST_ESP_OK(i2c_driver_install(I2C_MASTER_NUM, I2C_MODE_MASTER,
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I2C_MASTER_RX_BUF_DISABLE,
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I2C_MASTER_TX_BUF_DISABLE, 0));
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TEST_ESP_OK(i2c_param_config(I2C_MASTER_NUM, &conf_master));
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TEST_ESP_OK(i2c_set_start_timing(I2C_MASTER_NUM, 50, 60));
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TEST_ESP_OK(i2c_set_data_timing(I2C_MASTER_NUM, 80, 60));
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TEST_ESP_OK(i2c_set_stop_timing(I2C_MASTER_NUM, 100, 60));
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for (int i = 0; i < DATA_LENGTH; i++) {
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data_wr[i] = i;
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}
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i2c_master_write_slave(I2C_MASTER_NUM, data_wr, RW_TEST_LENGTH);
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TEST_ESP_OK(i2c_get_start_timing(I2C_MASTER_NUM, &test_setup_time, &test_hold_time));
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TEST_ESP_OK(i2c_get_data_timing(I2C_MASTER_NUM, &test_data_time, &test_hold_time));
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TEST_ESP_OK(i2c_get_stop_timing(I2C_MASTER_NUM, &test_stop_time, &test_hold_time));
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TEST_ASSERT_EQUAL_INT32(50, test_setup_time);
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TEST_ASSERT_EQUAL_INT32(80, test_data_time);
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TEST_ASSERT_EQUAL_INT32(100, test_stop_time);
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TEST_ASSERT_EQUAL_INT32(60, test_hold_time);
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free(data_wr);
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i2c_driver_delete(I2C_MASTER_NUM);
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}
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TEST_CASE("I2C data mode test", "[i2c]")
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{
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uint8_t *data_wr = (uint8_t *) malloc(DATA_LENGTH);
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i2c_trans_mode_t test_tx_trans_mode, test_rx_trans_mode;
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i2c_config_t conf_master = i2c_master_init();
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TEST_ESP_OK(i2c_driver_install(I2C_MASTER_NUM, I2C_MODE_MASTER,
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I2C_MASTER_RX_BUF_DISABLE,
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I2C_MASTER_TX_BUF_DISABLE, 0));
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TEST_ESP_OK(i2c_param_config(I2C_MASTER_NUM, &conf_master));
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for (int i = 0; i < DATA_LENGTH; i++) {
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data_wr[i] = i;
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}
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TEST_ESP_OK(i2c_set_data_mode(I2C_MASTER_NUM, I2C_DATA_MODE_LSB_FIRST, I2C_DATA_MODE_LSB_FIRST));
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TEST_ESP_OK(i2c_get_data_mode(I2C_MASTER_NUM, &test_tx_trans_mode, &test_rx_trans_mode));
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TEST_ASSERT_EQUAL_INT(I2C_DATA_MODE_LSB_FIRST, test_tx_trans_mode);
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TEST_ASSERT_EQUAL_INT(I2C_DATA_MODE_LSB_FIRST, test_rx_trans_mode);
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i2c_master_write_slave(I2C_MASTER_NUM, data_wr, RW_TEST_LENGTH);
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TEST_ESP_OK(i2c_set_data_mode(I2C_MASTER_NUM, I2C_DATA_MODE_MSB_FIRST, I2C_DATA_MODE_MSB_FIRST));
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TEST_ESP_OK(i2c_get_data_mode(I2C_MASTER_NUM, &test_tx_trans_mode, &test_rx_trans_mode));
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TEST_ASSERT_EQUAL_INT(I2C_DATA_MODE_MSB_FIRST, test_tx_trans_mode);
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TEST_ASSERT_EQUAL_INT(I2C_DATA_MODE_MSB_FIRST, test_rx_trans_mode);
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i2c_master_write_slave(I2C_MASTER_NUM, data_wr, RW_TEST_LENGTH);
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free(data_wr);
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i2c_driver_delete(I2C_MASTER_NUM);
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}
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TEST_CASE("I2C driver memory leaking check", "[i2c]")
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{
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esp_err_t ret;
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int size = esp_get_free_heap_size();
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for (uint32_t i = 0; i <= 1000; i++) {
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ret = i2c_driver_install(I2C_SLAVE_NUM, I2C_MODE_SLAVE,
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I2C_SLAVE_RX_BUF_LEN,
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I2C_SLAVE_TX_BUF_LEN, 0);
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TEST_ASSERT(ret == ESP_OK);
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vTaskDelay(10 / portTICK_RATE_MS);
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i2c_driver_delete(I2C_SLAVE_NUM);
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TEST_ASSERT(ret == ESP_OK);
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}
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TEST_ASSERT_INT_WITHIN(100, size, esp_get_free_heap_size());
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}
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static volatile bool exit_flag;
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static bool test_read_func;
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static void test_task(void *pvParameters)
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{
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xSemaphoreHandle *sema = (xSemaphoreHandle *) pvParameters;
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uint8_t *data = (uint8_t *) malloc(DATA_LENGTH);
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i2c_config_t conf_slave = i2c_slave_init();
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TEST_ESP_OK(i2c_driver_install(I2C_SLAVE_NUM, I2C_MODE_SLAVE,
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I2C_SLAVE_RX_BUF_LEN,
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I2C_SLAVE_TX_BUF_LEN, 0));
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TEST_ESP_OK(i2c_param_config( I2C_SLAVE_NUM, &conf_slave));
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while (exit_flag == false) {
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if (test_read_func) {
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i2c_slave_read_buffer(I2C_SLAVE_NUM, data, DATA_LENGTH, 0);
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} else {
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i2c_slave_write_buffer(I2C_SLAVE_NUM, data, DATA_LENGTH, 0);
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}
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vTaskDelay(10/portTICK_RATE_MS);
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}
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free(data);
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xSemaphoreGive(*sema);
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vTaskDelete(NULL);
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}
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TEST_CASE("test i2c_slave_read_buffer is not blocked when ticks_to_wait=0", "[i2c]")
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{
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xSemaphoreHandle exit_sema = xSemaphoreCreateBinary();
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exit_flag = false;
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test_read_func = true;
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xTaskCreate(test_task, "tsk1", 2048, &exit_sema, 5, NULL);
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printf("Waiting for 5 sec\n");
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vTaskDelay(5000 / portTICK_PERIOD_MS);
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exit_flag = true;
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if (xSemaphoreTake(exit_sema, 1000 / portTICK_PERIOD_MS) == pdTRUE) {
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vSemaphoreDelete(exit_sema);
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} else {
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TEST_FAIL_MESSAGE("i2c_slave_read_buffer is blocked");
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}
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TEST_ESP_OK(i2c_driver_delete(I2C_SLAVE_NUM));
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}
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TEST_CASE("test i2c_slave_write_buffer is not blocked when ticks_to_wait=0", "[i2c]")
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{
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xSemaphoreHandle exit_sema = xSemaphoreCreateBinary();
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exit_flag = false;
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test_read_func = false;
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xTaskCreate(test_task, "tsk1", 2048, &exit_sema, 5, NULL);
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printf("Waiting for 5 sec\n");
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vTaskDelay(5000 / portTICK_PERIOD_MS);
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exit_flag = true;
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if (xSemaphoreTake(exit_sema, 1000 / portTICK_PERIOD_MS) == pdTRUE) {
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vSemaphoreDelete(exit_sema);
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} else {
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TEST_FAIL_MESSAGE("i2c_slave_write_buffer is blocked");
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}
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TEST_ESP_OK(i2c_driver_delete(I2C_SLAVE_NUM));
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}
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