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esp-who/components/bus/test/test_i2c_bus.c

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// Copyright 2020-2021 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdio.h>
#include <string.h>
#include "unity.h"
#include "test_utils.h"
#include "unity_config.h"
#include "i2c_bus.h"
#include "esp_system.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#define I2C_MASTER_SCL_IO (gpio_num_t)22 /*!< gpio number for I2C master clock */
#define I2C_MASTER_SDA_IO (gpio_num_t)21 /*!< gpio number for I2C master data */
#define DATA_LENGTH 512 /*!<Data buffer length for test buffer*/
#define RW_TEST_LENGTH 129 /*!<Data length for r/w test, any value from 0-DATA_LENGTH*/
#define DELAY_TIME_BETWEEN_ITEMS_MS 1234 /*!< delay time between different test items */
#define I2C_SLAVE_SCL_IO 17 /*!<gpio number for i2c slave clock */
#define I2C_SLAVE_SDA_IO 16 /*!<gpio number for i2c slave data */
#define I2C_MASTER_NUM I2C_NUM_1 /*!<I2C port number for master dev */
#define I2C_MASTER_FREQ_HZ 100000 /*!< I2C master clock frequency */
#define I2C_SLAVE_NUM I2C_NUM_0 /*!<I2C port number for slave dev */
#define I2C_SLAVE_TX_BUF_LEN (2*DATA_LENGTH) /*!<I2C slave tx buffer size */
#define I2C_SLAVE_RX_BUF_LEN (2*DATA_LENGTH) /*!<I2C slave rx buffer size */
#define ESP_SLAVE_ADDR 0x28 /*!< ESP32 slave address, you can set any 7bit value */
void i2c_bus_init_deinit_test()
{
i2c_config_t conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = I2C_MASTER_SDA_IO,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_io_num = I2C_MASTER_SCL_IO,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = I2C_MASTER_FREQ_HZ,
};
i2c_bus_handle_t i2c0_bus_1 = i2c_bus_create(I2C_NUM_0, &conf);
TEST_ASSERT(i2c0_bus_1 != NULL);
/** configs not change**/
i2c0_bus_1 = i2c_bus_create(I2C_NUM_0, &conf);
TEST_ASSERT(i2c0_bus_1 != NULL);
/** configs not change**/
conf.master.clk_speed *= 2;
i2c0_bus_1 = i2c_bus_create(I2C_NUM_0, &conf);
TEST_ASSERT(i2c0_bus_1 != NULL);
vTaskDelay(100 / portTICK_RATE_MS);
TEST_ASSERT(ESP_OK == i2c_bus_delete(&i2c0_bus_1));
TEST_ASSERT(i2c0_bus_1 == NULL);
}
void i2c_bus_device_add_test()
{
i2c_config_t conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = I2C_MASTER_SDA_IO,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_io_num = I2C_MASTER_SCL_IO,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = I2C_MASTER_FREQ_HZ,
};
i2c_bus_handle_t i2c0_bus_1 = i2c_bus_create(I2C_NUM_0, &conf);
TEST_ASSERT(i2c0_bus_1 != NULL);
i2c_bus_device_handle_t i2c_device1 = i2c_bus_device_create(i2c0_bus_1, 0x01, 400000);
TEST_ASSERT(i2c_device1 != NULL);
i2c_bus_device_handle_t i2c_device2 = i2c_bus_device_create(i2c0_bus_1, 0x01, 100000);
TEST_ASSERT(i2c_device2 != NULL);
i2c_bus_device_delete(&i2c_device1);
TEST_ASSERT(i2c_device1 == NULL);
i2c_bus_device_delete(&i2c_device2);
TEST_ASSERT(i2c_device2 == NULL);
TEST_ASSERT(ESP_OK == i2c_bus_delete(&i2c0_bus_1));
TEST_ASSERT(i2c0_bus_1 == NULL);
}
#if !TEMPORARY_DISABLED_FOR_TARGETS(ESP32S2)
// print the reading buffer
static void disp_buf(uint8_t *buf, int len)
{
int i;
for (i = 0; i < len; i++) {
printf("%02x ", buf[i]);
if ((i + 1) % 16 == 0) {
printf("\n");
}
}
printf("\n");
}
static void i2c_master_write_test(void)
{
uint8_t *data_wr = (uint8_t *) malloc(DATA_LENGTH);
int i;
i2c_config_t conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = I2C_MASTER_SDA_IO,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_io_num = I2C_MASTER_SCL_IO,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = I2C_MASTER_FREQ_HZ,
};
i2c_bus_handle_t i2c0_bus = i2c_bus_create(I2C_MASTER_NUM, &conf);
TEST_ASSERT(i2c0_bus != NULL);
i2c_bus_device_handle_t i2c_device1 = i2c_bus_device_create(i2c0_bus, ESP_SLAVE_ADDR, 0);
TEST_ASSERT(i2c_device1 != NULL);
unity_wait_for_signal("i2c slave init finish");
unity_send_signal("master write");
for (i = 0; i < DATA_LENGTH / 2; i++) {
data_wr[i] = i;
}
i2c_bus_write_bytes(i2c_device1, NULL_I2C_MEM_ADDR, DATA_LENGTH / 2, data_wr);
disp_buf(data_wr, i + 1);
free(data_wr);
i2c_bus_device_delete(&i2c_device1);
TEST_ASSERT(i2c_device1 == NULL);
TEST_ASSERT(ESP_OK == i2c_bus_delete(&i2c0_bus));
TEST_ASSERT(i2c0_bus == NULL);
}
static void i2c_slave_read_test(void)
{
uint8_t *data_rd = (uint8_t *) malloc(DATA_LENGTH);
int size_rd = 0;
int len = 0;
i2c_config_t conf_slave = {
.mode = I2C_MODE_SLAVE,
.sda_io_num = I2C_SLAVE_SDA_IO,
.scl_io_num = I2C_SLAVE_SCL_IO,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.slave.addr_10bit_en = 0,
.slave.slave_addr = ESP_SLAVE_ADDR,
};
TEST_ESP_OK(i2c_param_config(I2C_SLAVE_NUM, &conf_slave));
TEST_ESP_OK(i2c_driver_install(I2C_SLAVE_NUM, I2C_MODE_SLAVE,
I2C_SLAVE_RX_BUF_LEN,
I2C_SLAVE_TX_BUF_LEN, 0));
unity_send_signal("i2c slave init finish");
unity_wait_for_signal("master write");
while (1) {
len = i2c_slave_read_buffer(I2C_SLAVE_NUM, data_rd + size_rd, DATA_LENGTH, 10000 / portTICK_RATE_MS);
if (len == 0) {
break;
}
size_rd += len;
}
disp_buf(data_rd, size_rd);
for (int i = 0; i < size_rd; i++) {
TEST_ASSERT(data_rd[i] == i);
}
free(data_rd);
unity_send_signal("ready to delete");
TEST_ESP_OK(i2c_driver_delete(I2C_SLAVE_NUM));
}
TEST_CASE_MULTIPLE_DEVICES("I2C master write slave test", "[i2c_bus]", i2c_master_write_test, i2c_slave_read_test);
static void master_read_slave_test(void)
{
uint8_t *data_rd = (uint8_t *) malloc(DATA_LENGTH);
memset(data_rd, 0, DATA_LENGTH);
i2c_config_t conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = I2C_MASTER_SDA_IO,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_io_num = I2C_MASTER_SCL_IO,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = I2C_MASTER_FREQ_HZ,
};
i2c_bus_handle_t i2c0_bus = i2c_bus_create(I2C_MASTER_NUM, &conf);
TEST_ASSERT(i2c0_bus != NULL);
i2c_bus_device_handle_t i2c_device1 = i2c_bus_device_create(i2c0_bus, ESP_SLAVE_ADDR, 0);
TEST_ASSERT(i2c_device1 != NULL);
unity_wait_for_signal("i2c slave init finish");
unity_send_signal("slave write");
unity_wait_for_signal("master read");
i2c_bus_read_bytes(i2c_device1, NULL_I2C_MEM_ADDR, RW_TEST_LENGTH, data_rd);
vTaskDelay(100 / portTICK_RATE_MS);
for (int i = 0; i < RW_TEST_LENGTH; i++) {
printf("%d\n", data_rd[i]);
TEST_ASSERT(data_rd[i] == i);
}
free(data_rd);
unity_send_signal("ready to delete");
i2c_bus_device_delete(&i2c_device1);
TEST_ASSERT(i2c_device1 == NULL);
TEST_ASSERT(ESP_OK == i2c_bus_delete(&i2c0_bus));
TEST_ASSERT(i2c0_bus == NULL);
}
static void slave_write_buffer_test(void)
{
uint8_t *data_wr = (uint8_t *) malloc(DATA_LENGTH);
int size_rd;
i2c_config_t conf_slave = {
.mode = I2C_MODE_SLAVE,
.sda_io_num = I2C_SLAVE_SDA_IO,
.scl_io_num = I2C_SLAVE_SCL_IO,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.slave.addr_10bit_en = 0,
.slave.slave_addr = ESP_SLAVE_ADDR,
};
TEST_ESP_OK(i2c_param_config(I2C_SLAVE_NUM, &conf_slave));
TEST_ESP_OK(i2c_driver_install(I2C_SLAVE_NUM, I2C_MODE_SLAVE,
I2C_SLAVE_RX_BUF_LEN,
I2C_SLAVE_TX_BUF_LEN, 0));
unity_send_signal("i2c slave init finish");
unity_wait_for_signal("slave write");
for (int i = 0; i < DATA_LENGTH / 2; i++) {
data_wr[i] = i;
}
size_rd = i2c_slave_write_buffer(I2C_SLAVE_NUM, data_wr, RW_TEST_LENGTH, 2000 / portTICK_RATE_MS);
disp_buf(data_wr, size_rd);
unity_send_signal("master read");
unity_wait_for_signal("ready to delete");
free(data_wr);
i2c_driver_delete(I2C_SLAVE_NUM);
}
TEST_CASE_MULTIPLE_DEVICES("I2C master read slave test", "[i2c_bus]", master_read_slave_test, slave_write_buffer_test);
#endif //DISABLED_FOR_TARGET(ESP32S2)
TEST_CASE("i2c bus init-deinit test", "[bus][i2c_bus]")
{
i2c_bus_init_deinit_test();
i2c_bus_device_add_test();
}
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