1
2 #include "rtconfig.h"
3 #if defined BSP_USING_I2C_MSG
4 #include "drv_log.h"
5 #include "drv_i2c.h"
6 #define TEST_DEVICE_ADDR 0x53
7 static struct rt_i2c_bus_device *i2c_test_bus = RT_NULL;
i2c_msg_sample(int argc,char * argv[])8 int i2c_msg_sample(int argc, char *argv[])
9 {
10 rt_uint8_t write_content[] = {"Phytium Rt-thread I2C Msg Driver Test Successfully !!"};
11 rt_uint8_t write_addr[2] = {0x0, 0x0};
12 rt_uint8_t write_buf[2 + sizeof(write_content)];
13 rt_memcpy(write_buf, write_addr, 2);
14 rt_memcpy(write_buf + 2, write_content, sizeof(write_content));
15
16 rt_uint8_t read_buf[2 + sizeof(write_content)];
17 rt_memcpy(read_buf, write_addr, 2);
18
19 char name[RT_NAME_MAX];
20 rt_strncpy(name, "I2C3_MSG", RT_NAME_MAX);
21 i2c_test_bus = (struct rt_i2c_bus_device *)rt_device_find(name);
22 if (i2c_test_bus == RT_NULL)
23 {
24 rt_kprintf("can't find %s device!\n", name);
25 }
26 else
27 {
28 rt_kprintf("find %s device!!!!\n", name);
29 }
30
31 struct rt_i2c_msg write_msgs;
32 write_msgs.addr = TEST_DEVICE_ADDR;
33 write_msgs.flags = RT_I2C_WR;
34 write_msgs.buf = write_buf;
35 write_msgs.len = sizeof(write_buf);
36 rt_i2c_transfer(i2c_test_bus, &write_msgs, 1);
37
38 struct rt_i2c_msg read_msgs;
39 read_msgs.addr = TEST_DEVICE_ADDR;
40 read_msgs.flags = RT_I2C_RD;
41 read_msgs.buf = read_buf;
42 read_msgs.len = sizeof(read_buf);
43 rt_i2c_transfer(i2c_test_bus, &read_msgs, 1);
44
45 for (rt_uint8_t i = 0; i < sizeof(write_content); i++)
46 {
47 if (read_buf[i] != write_content[i])
48 {
49 return -RT_ERROR;
50 }
51 }
52 printf("%s\n", read_buf);
53 return RT_EOK;
54 }
55 MSH_CMD_EXPORT(i2c_msg_sample, i2c msg device sample);
56
57 #endif