RN4870 Click Board

Code examples for the RN4870 Click Board™, written for MikroElektronika hardware and compilers are available on Libstock.

Code Snippet

The following code snippet shows send function for the RN4870 Click Board™. If the message type is correct, it will establish connection with the device specified by the address in the parameter and then send the properly formatted data.

01 #define BTCMD( TXT ) UART2_Write_Text( TXT )
02 void RN4xxx_send(char *pAddr, T_RN4xxx_message msgData )
03 {
04    static char msgTxt [255];
05    
06    if (msgData.msgType ==  'Q')
07    {
08        /*Connects to a device with specified adress*/
09        BTCMD("C,1,");
10        BTCMD (pAddr);
11        BTCMD("r");
12        Delay_ms(3000);
13        /*Secures the connection, entering data stream mode*/
14        BTCMD("Br");
15        Delay_ms(3000);
16    }
17    /*Sentence construction */
18    msgTxt[0] = '#';
19    msgTxt[1] = msgData.msgType;
20    msgTxt[2] = ',';
21    msgTxt[3] = msgData.dataType/0x100;
22    msgTxt[4] = msgData.dataType%0x100;
23    msgTxt[5] = ',';
24    msgTxt[6] = msgData.id;
25    msgTxt[7] = ',';
26    msgTxt[8] = '';
27    strcat (msgTxt, msgData.payload);
28    strcat (msgTxt, "*rn");
29    
30    BTCMD ( msgTxt );
31    
32    if (msgData.msgType ==  'Q')
33    {
34        Delay_ms(3000);
35        /*Enters CMD mode*/
36         BTCMD("$");
37        Delay_ms(100);
38        BTCMD("$$$");
39        Delay_ms(1000);
40        /*Kills connection*/
41        BTCMD("K,1r");
42        Delay_ms(500);
43    }
44 }