Programming using PIC18F452
Programming using PIC18F452
by Starlight
Thu Feb 05, 2009 2:19 am
Hi. Currently I'm using the PIC18F452 as my controller without using the CM5. From the user's manual, the example.c are written using Atmega128. So does anyone have the sample program of c using PIC18F452 ? Thanks .
by i-Bot
Thu Feb 05, 2009 2:09 pm
I would suggest you are far better using the ATMega128 instead of the PIC18F452. Entry cost for using ATMega is low for boards, C compiler, debug, etc. Plus you now have the library from RandomMatt too.
If you must use the PIC, then first work on the Serial port routines as these are greatest challenge to get working especially at 1M. After that, just use the ATMega C code as example.
If you must use the PIC, then first work on the Serial port routines as these are greatest challenge to get working especially at 1M. After that, just use the ATMega C code as example.
HELP in ID and baud rate setup !!!
by Starlight
Tue Feb 10, 2009 8:06 am
Hi. Thanks for i-Bot's advise. btw, the circuit with PIC18F452 have been done, and I didn't have time to rework the circuit using ATMega128. Now my problem is how can I setup the ID of AX-12 and set the baud rate of AX-12 (default is 1Mbps) to 500Kbps ? any sample of C language or assembly to work on ? I'm using the MPLAB IDE for programming. Thanks. I'm really appreciate for someone who can help me on these problem.
Re: HELP in ID and baud rate setup !!!
by StuartL
Wed Feb 11, 2009 11:48 am
Starlight wrote:Hi. Thanks for i-Bot's advise. btw, the circuit with PIC18F452 have been done, and I didn't have time to rework the circuit using ATMega128. Now my problem is how can I setup the ID of AX-12 and set the baud rate of AX-12 (default is 1Mbps) to 500Kbps ? any sample of C language or assembly to work on ? I'm using the MPLAB IDE for programming. Thanks. I'm really appreciate for someone who can help me on these problem.
The AX-12 pdf file has many examples of the packets, including how to set the baud rate to 500kbps. You'll have to figure out how to drive the PIC serial port in half duplex mode (tristate on receive, drive on TX) at the right speed but as soon as you've achieved that all should be well.