【AT-START-F405测评】-1- I2C扫描设备

  /* initial system clock */

  system_clock_config();



  /* config nvic priority group */

  nvic_priority_group_config(NVIC_PRIORITY_GROUP_4);



  /* at board initial */

  at32_board_init();

        uart_print_init(115200);



  hi2cx.i2cx = I2Cx_PORT;



  /* i2c config */

  i2c_config(&hi2cx);

        printf("i2c scan example: aim to find the i2c device on the bus\r\n");

/* Scans for I2C client devices on the bus - that have an address within the 

 *specified range [addr_min, addr_max]

 */

void main_i2c_scan(uint8_t addr_min, uint8_t addr_max)

{

    uint8_t client_address;

    uint8_t client_addr_str[5]={0};

    static uint8_t IIC_Client_Num = 0;

    printf("\r\n I2C Scan started from 0x%02X to 0x%02X:", addr_min, addr_max);

    //LCD_ShowString(0,35,"I2C Client:",RED,WHITE,12,0);

    for (client_address = addr_min; client_address <= addr_max; client_address++)

    {

        printf("\r\n Scanning client address = 0x%02X", (int)client_address);        



                            /* start the request reception process */



                                //I2C_Send7bitAddress(I2C1, client_address, I2C_Direction_Transmitter);

                                if((i2c_status = i2c_master_transmit(&hi2cx, client_address, &client_address, 1, I2C_TIMEOUT)) == I2C_OK )

                                {

            printf("\r\n---- --> client (0x%02X) ACKED <-- ------ ", (int)client_address);

            client_addr_str[0] = '0';

            client_addr_str[1] = 'x';

            if(client_address/16 >= 10)

                client_addr_str[2] = client_address/16 -10 + 'A';

            else

                client_addr_str[2] = client_address/16 + '0';

            if(client_address%16 >= 10)

                client_addr_str[3] = client_address%16 -10 + 'A';

            else

                client_addr_str[3] = client_address%16 + '0';

            client_addr_str[4] = '\0';

            IIC_Client_Num++;

                        

                                                printf("Yes, I2C Device found. Device Addr: %s",client_addr_str);

                                }else{

                                        continue;

                                }

        

        delay_ms(50);

    }//<--for--loop>

    printf("\r\n ----------------- I2C Scan ended -----------------");

}

i2c scan example: aim to find the i2c device on the bus



 I2C Scan started from 0x00 to 0x7F:

 Scanning client address = 0x00

 Scanning client address = 0x01

 Scanning client address = 0x02

 Scanning client address = 0x03

 Scanning client address = 0x04

 Scanning client address = 0x05

 Scanning client address = 0x06

 Scanning client address = 0x07

 Scanning client address = 0x08

 Scanning client address = 0x09

 Scanning client address = 0x0A

 Scanning client address = 0x0B

 Scanning client address = 0x0C

 Scanning client address = 0x0D

 Scanning client address = 0x0E

 Scanning client address = 0x0F

 Scanning client address = 0x10

 Scanning client address = 0x11

 Scanning client address = 0x12

 Scanning client address = 0x13

 Scanning client address = 0x14

 Scanning client address = 0x15

 Scanning client address = 0x16

 Scanning client address = 0x17

 Scanning client address = 0x18

 Scanning client address = 0x19

 Scanning client address = 0x1A

 Scanning client address = 0x1B

 Scanning client address = 0x1C

 Scanning client address = 0x1D

 Scanning client address = 0x1E

 Scanning client address = 0x1F

 Scanning client address = 0x20

 Scanning client address = 0x21

 Scanning client address = 0x22

 Scanning client address = 0x23

 Scanning client address = 0x24

 Scanning client address = 0x25

 Scanning client address = 0x26

 Scanning client address = 0x27

 Scanning client address = 0x28

 Scanning client address = 0x29

 Scanning client address = 0x2A

 Scanning client address = 0x2B

 Scanning client address = 0x2C

 Scanning client address = 0x2D

 Scanning client address = 0x2E

 Scanning client address = 0x2F

 Scanning client address = 0x30

 Scanning client address = 0x31

 Scanning client address = 0x32

 Scanning client address = 0x33

 Scanning client address = 0x34

 Scanning client address = 0x35

 Scanning client address = 0x36

 Scanning client address = 0x37

 Scanning client address = 0x38

 Scanning client address = 0x39

 Scanning client address = 0x3A

 Scanning client address = 0x3B

 Scanning client address = 0x3C

 Scanning client address = 0x3D

 Scanning client address = 0x3E

 Scanning client address = 0x3F

 Scanning client address = 0x40

 Scanning client address = 0x41

 Scanning client address = 0x42

 Scanning client address = 0x43

 Scanning client address = 0x44

 Scanning client address = 0x45

 Scanning client address = 0x46

 Scanning client address = 0x47

 Scanning client address = 0x48

 Scanning client address = 0x49

 Scanning client address = 0x4A

 Scanning client address = 0x4B

 Scanning client address = 0x4C

 Scanning client address = 0x4D

 Scanning client address = 0x4E

 Scanning client address = 0x4F

 Scanning client address = 0x50

 Scanning client address = 0x51

 Scanning client address = 0x52

 Scanning client address = 0x53

 Scanning client address = 0x54

 Scanning client address = 0x55

 Scanning client address = 0x56

 Scanning client address = 0x57

 Scanning client address = 0x58

 Scanning client address = 0x59

 Scanning client address = 0x5A

 Scanning client address = 0x5B

 Scanning client address = 0x5C

 Scanning client address = 0x5D

 Scanning client address = 0x5E

 Scanning client address = 0x5F

 Scanning client address = 0x60

 Scanning client address = 0x61

 Scanning client address = 0x62

 Scanning client address = 0x63

 Scanning client address = 0x64

 Scanning client address = 0x65

 Scanning client address = 0x66

 Scanning client address = 0x67

 Scanning client address = 0x68

 Scanning client address = 0x69

 Scanning client address = 0x6A

 Scanning client address = 0x6B

 Scanning client address = 0x6C

 Scanning client address = 0x6D

 Scanning client address = 0x6E

 Scanning client address = 0x6F

 Scanning client address = 0x70

 Scanning client address = 0x71

 Scanning client address = 0x72

 Scanning client address = 0x73

 Scanning client address = 0x74

 Scanning client address = 0x75

 Scanning client address = 0x76

 Scanning client address = 0x77

 Scanning client address = 0x78

---- --> client (0x78) ACKED <-- ------ Yes, I2C Device found. Device Addr: 0x78

 Scanning client address = 0x79

---- --> client (0x79) ACKED <-- ------ Yes, I2C Device found. Device Addr: 0x79

 Scanning client address = 0x7A

 Scanning client address = 0x7B

 Scanning client address = 0x7C

 Scanning client address = 0x7D

 Scanning client address = 0x7E

 Scanning client address = 0x7F

 ----------------- I2C Scan ended -----------------