Mikroelektronika d.o.o.
RN4870 Click Board
RN4870 Click Board
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The RN4870 Click Board™ carries the RN4870 Bluetooth® 4.2 low energy module from Microchip.
The click is designed to run on a 3.3V power supply. It uses ASCII Command Interface over UART for communication with target microcontroller, with additional functionality provided by the following pins on the mikroBUS™ line: PWM, INT, RST, CS.
Software Support
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 }
RN4870 Click Board
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