SDCC PIC16F877 NOT BLINK LED

[Ronan CIMADURE]

Hi my message is so simple .

I develop a app with sdcc (sept 29 2008) and test the result on GPSIM .
I use PIKLAB IDE 0.15.3
But when I program , NOTHING

So I try to verify my pic , with a hello word . But .. it didn't work
I use a .hex on the net , and the led blink , so the problem is not my pic , my JDM serial programmer, ..or my led

//THE CODE
#include <pic16f877.h>

void delay_ms(long ms)
{
    long i;
    while (ms--)
        for (i=0; i < 330; i++)
            ;
}

void main()
{
TRISA = 0x00;
while(1)
    {
        RA0 = 0;
        RA1 = 0;
        delay_ms(250);
        RA0 = 0;
        RA1 = 0;
        delay_ms(250);
    }
}

THK before .

[kein0r]

not 100% sure but, the A Port on your device is used together with the ADC. See the adc section in the datasheet how to initialize the port for digital output. On some devices this can also be set in configuration registers so double check them also.

[kein0r]

and check the watchdog configuration in config regs

[Raphael Neider]

As we all know, blinky traditionally sets some pin *low* (RAn = 0), waits a bit (delay_ms), sets the same pin(s) *low* (RAn = 0) again, and waits again (delay_ms) ...

Try assigning RA0 = 1; RA1 = 1; the second time through!

Good luck,
Raphael

PS: The hint about initialization of ADC and config bits is still valid.

[Ronan CIMADURE]

Thank I will check that

there is an error in the code , yes the the second time , RA1 and RA0 are =1

this is the simple test, in the real , I put ALL PORTS on output TRISA to TRISD , and   toggle PORTA to PORTD , 

I ll check the watchdog

thk

[Ronan CIMADURE]

Heyyyyy ,  thank for the help now I can test my tach :-)
I just have to configure the __CONFIGure BITS ( _WDT_OFF )
Vive SDCC