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help with the coding of a line follower

 
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preesteS
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help with the coding of a line follower
PostPosted: Fri Jun 13, 2008 3:05 am     Reply with quote
hey guys. I really need some help urgently. I am trying to build a line follower robot. I am using three sensors connected to the pin2, 3 and 4 of the pic16F877. has anyone got some c source code for this type of thing. Then I also first want to read and then print on the screen the value on these pins. I use the #use rs232 statement as well as the printf statements but when i run the program i see nothing on the screen. I am using the ccs compiler. Where are you supposed to see the output?
Please help.....really appreciate it Smile
cparsons



Joined: 09 Jan 2008
Posts: 5

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PostPosted: Fri Jun 13, 2008 9:30 am     Reply with quote
I don't have any such source code.

When you say you don't see anything on the screen, can you be a bit more specific about how the "screen" is connected to the PIC?

On my PIC18LF4580 I use the debug port using printf and including the lines
Code:

#use delay(clock=14745600)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)

Pins C6 and C7 then go through an interface chip to a serial port which I connect to my PC. My PICDEM2 Plus development board needs a "straight" serial cable i.e. not a cross over. My PC is set to communicate at 9600 baud, 1 stop bit, no parity.

The frequently asked questions and compiler documentation might also be useful. e.g. my compiler documentation includes the FAQs How does the PIC® connect to a PC? and Why is the RS-232 not working right?.
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