pic 16f877A problem

[ahmeddragonbleu]

my program is not repeated. there is no loop


#include <16F877A.h>
#use delay(clock=4000000,restart_wdt)

void a()
{

output_b(0b00000000);
output_a(0b00000001);
delay_ms(1);
output_b(0b01110110);
output_a(0b00000010);
delay_ms(1);
output_b(0b01110110);
output_a(0b00000100);
delay_ms(1);
output_b(0b01110110);
output_a(0b00001000);
delay_ms(1);
output_b(0b00000000);
output_a(0b00100000);
delay_ms(1);

}
void b()
{

output_b(0b00000000);
output_a(0b00000001);
delay_ms(1);
output_b(0b00110110);
output_a(0b00000010);
delay_ms(1);
output_b(0b00110110);
output_a(0b00000100);
delay_ms(1);
output_b(0b00110110);
output_a(0b00001000);
delay_ms(1);
output_b(0b01001001);
output_a(0b00100000);
delay_ms(1);
}

void main()
{
int j;
while(1)
{

for(j=0;j<250;j++)
{
a() ;
}
for(j>250;j<500;j++)
{
b();
}
}
}

i need some help

[ckielstra]

When posting code use the 'code' button. This helps to preserve the layout of your program and makes for easier reading.

When you are having problems with your program always try to narrow down as much as possible. By removing as many parts as possible you will finally have a small (not working) program. This helps you to focus on where the real program is, instead of where you _think_ the program is.

What oscillator are you using? Crystal, clock generator, R-C?
Assuming you are using an external crystal change the start of your program to:

[ahmeddragonbleu]

Thanks a lot for your help.
Now my program is running very well.