How to Reset my MCU from a RS-232 signal (DTR, etc.)

cfernandez · Joined: 18 Oct 2003 Posts: 145

Hi,

I need to reset my MCU from a RS-232 signal, is possible to send me the schematics for this and sample code.

Thank you very much!!!!!

Felix Althaus · Posted: Sun Mar 21, 2004 2:42 pm

Hi

How do you want to reset your PIC? By hardware signal or by a received RS232 command?
Can you specify your problem a little bit more?

Felix

cfernandez · Joined: 18 Oct 2003 Posts: 145

I want to reset my PIC by put the RST or other singal in RS-232 in HIGH. Not by command.

Thanks

Konrad · Joined: 15 Sep 2003 Posts: 34

DTS/DTR is probably better, just connect via 22k to /MCLR, but,

What are you trying to do?
Use restart() & RS232 interrupts would probably be more controlable.

Guest · Posted: Sun Mar 21, 2004 5:50 pm

Guest · Posted: Sun Mar 21, 2004 5:51 pm

cfernandez · Joined: 18 Oct 2003 Posts: 145

I am making a reader to connect a POS and is possible that the POS need reset the reader, for example: The POS upgrade the firmware of reader and in the middle of upgrade the electrical conexion OFF, then the reader not have a correct firmware and is possible that the POS RESET the reader to comunicate with the bootloader.

You have a best idea for this case?

Best Regards.

Pete Smith · Joined: 17 Sep 2003 Posts: 55 Location: Chester, UK