GRBL-LPC Uart connection

Controllers Grbl-LPC
1

Hi everyone,

I have a question about uart connection. I want to connect bluetooth device to control jog commands to sbase with GRBL-LPC.

I use TX0 and RX0 pins on sbase board.

in serial.c

#include "grbl.h"

#define USE_USB

#ifdef USE_USB
#include "usbSerial.h"
#else
#include "Driver_USART.h"
#endif

When I comment “#define USE_USB”, bluetooth work but not USB. When i uncomment it USB works but not bluetooth. Is it possible to make both working?

Best Regards
Cihan Alak

2

Welcome to the forum.

I had a quick look at the code. The use of #ifndef USE_USB throughout indicates it’s either \ or.

Besides that, you can only have one serial device connected to RX TX.

3

Thank you for your kind answer.

Is it possible to make both useable?

4

Possibly, but it would take a re-write of serial.c

Without digging too deep : Each function would need to check for a valid connection and attempt to read / write the data .