10 years, 1 month ago.

RN-42 Bluetooth module with mbed lpc1768, I can not display the reading from the meter on LCD

dear all I used rn-42 Bluetooth module connected to lpc1768 through pin9 and pin 10. I consider this as a master by making the proper setting via Tera Term and I set authentication to be 0. my slave address is 001C0500D414. after inquery scan I get my slave device and save it in RN-42 module. then status give me connected. now I want to receive the reading from the slave and display it in LCD(I used mbed application board). but I did not get anything please advise for correct code. the code I used below.

1. include "mbed.h"
2. include "C12832.h" C12832 lcd(p5, p7, p6, p8, p11); Serial RNBT(p9,p10); void initialise_connection() {

RNBT.putc('$'); Enter command mode RNBT.putc('$'); RNBT.putc('$'); wait(0.5);

RNBT.putc('C'); RNBT.putc(','); Send MAC address RNBT.putc('0'); RNBT.putc('0'); RNBT.putc('1'); RNBT.putc('C'); RNBT.putc('0'); RNBT.putc('5'); RNBT.putc('0'); RNBT.putc('0'); RNBT.putc('D'); RNBT.putc('4'); RNBT.putc('1'); RNBT.putc('4'); wait(0.5);

RNBT.putc('-'); Exit command mode RNBT.putc('-'); RNBT.putc('-'); RNBT.putc(0x0D); wait(0.5); } char x; void initialise_connection(void);

int main() { RNBT.baud(115200); initialise_connection(); while (1) { if (RNBT.readable()) { lcd.printf("%d\n",RNBT.getc());

} } }