18f4550 RC0 - Electronic Circuits Projects Diagrams Free

HerbertMunch · 19th February 2008, 10:58 AM

Hi all,
anyone know how to configure rc0 as a digital output?

I have tried everything i can think of, but it still wont work!

Code:

	PORTA=0;
	PORTB =0;
	PORTC =0;
	PORTE =0;
	
	T1CON =0;
	ADCON1 = 0x0F;
	CMCON = 0x07;
	
	TRISB = 0;
	TRISA =0;
	TRISE =0;
	TRISC =0;
	
//	RED_LED10(1);	
	LATA = 0xff;
	LATB = 0xff;
	LATC = 0xff;
	LATE = 0xff;

the datasheet states that rc0 is multiplexed with timer1, but ihave turned this off by setting t1con =0; it still doesnt work though.

Any ideas?

many thanks

Pommie · 19th February 2008, 11:11 AM

Port C,0 works fine. I have used it on the Unicorn to drive CS2 of a graphic LCD. Could the pin be shorted to ground? What do you read back from PORTC and LATC?

Mike.

HerbertMunch · 19th February 2008, 11:59 AM

Quote:

Originally Posted by Pommie

Port C,0 works fine. I have used it on the Unicorn to drive CS2 of a graphic LCD. Could the pin be shorted to ground? What do you read back from PORTC and LATC?

Mike.

Hi mike,
Thanks very much, i just checked the board again with a meter and found a short. I had routed the rc0 trace through the tiny gap inbetween an 0805 resistor.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar
Title	Starter	Forum	Replies	Latest
PIC 18F4550 interacing with USB	amax	Micro Controllers	7	21st December 2007 03:13 PM

19th February 2008, 10:58 AM	#1
HerbertMunch	18f4550 RC0 Hi all, anyone know how to configure rc0 as a digital output? I have tried everything i can think of, but it still wont work! Code: PORTA=0; PORTB =0; PORTC =0; PORTE =0; T1CON =0; ADCON1 = 0x0F; CMCON = 0x07; TRISB = 0; TRISA =0; TRISE =0; TRISC =0; // RED_LED10(1); LATA = 0xff; LATB = 0xff; LATC = 0xff; LATE = 0xff; the datasheet states that rc0 is multiplexed with timer1, but ihave turned this off by setting t1con =0; it still doesnt work though. Any ideas? many thanks

19th February 2008, 11:11 AM	#2
Pommie	Port C,0 works fine. I have used it on the Unicorn to drive CS2 of a graphic LCD. Could the pin be shorted to ground? What do you read back from PORTC and LATC? Mike.