#include "rtconfig.h" #if defined BSP_USING_I2C #include "drv_log.h" #include "drv_i2c.h" #define TEST_DEVICE_ADDR 0x53 static struct rt_i2c_bus_device *i2c_test_bus = RT_NULL; rt_err_t i2c_sample() { rt_uint8_t write_content[] = {"Phytium Rt-thread I2C Driver Test Successfully !!"}; rt_uint8_t write_addr[2] = {0x0, 0x0}; rt_uint8_t write_buf[2 + sizeof(write_content)]; rt_memcpy(write_buf, write_addr, 2); rt_memcpy(write_buf + 2, write_content, sizeof(write_content)); rt_uint8_t read_buf[2 + sizeof(write_content)]; rt_memcpy(read_buf, write_addr, 2); char name[RT_NAME_MAX]; #if defined(FIREFLY_DEMO_BOARD) rt_strncpy(name, "MIO1", RT_NAME_MAX); #endif #if defined(E2000D_DEMO_BOARD)||defined(E2000Q_DEMO_BOARD) rt_strncpy(name, "MIO15", RT_NAME_MAX); #endif #if defined(TARGET_PD2408) rt_strncpy(name, "I2C3", RT_NAME_MAX); #endif i2c_test_bus = (struct rt_i2c_bus_device *)rt_device_find(name); if (i2c_test_bus == RT_NULL) { rt_kprintf("can't find %s device!\n", name); } else { rt_kprintf("find %s device!!!!\n", name); } struct rt_i2c_msg write_msgs; write_msgs.addr = TEST_DEVICE_ADDR; write_msgs.flags = RT_I2C_WR; write_msgs.buf = write_buf; write_msgs.len = sizeof(write_buf); rt_i2c_transfer(i2c_test_bus, &write_msgs, 1); struct rt_i2c_msg read_msgs; read_msgs.addr = TEST_DEVICE_ADDR; read_msgs.flags = RT_I2C_RD; read_msgs.buf = read_buf; read_msgs.len = sizeof(read_buf); rt_i2c_transfer(i2c_test_bus, &read_msgs, 1); for (rt_uint8_t i = 0; i < sizeof(write_content); i++) { if (read_buf[i] != write_content[i]) { return -RT_ERROR; } } rt_kprintf("%s\n", read_buf); return RT_EOK; } MSH_CMD_EXPORT(i2c_sample, i2c device sample); #endif