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PIC16F628 Portb Pullups Enable

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2-Chri

Joined: 23 Mar 2012
Posts: 8

PIC16F628 Portb Pullups Enable

Posted: Sat Apr 28, 2012 4:02 pm

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Hello,
I want to enable the internal pullups resistor but I couldn't enable the resistors. My code is below:

Code:

#include <16F628A.h>
#include <Lcd_16x2_4bit_Operation_2.c>
#fuses HS,MCLR,PUT,NOLVP,NOWDT,NOBROWNOUT,PROTECT,CPD
#use delay(clock=20000000)

#byte PORTA = 0x05
#byte PORTB = 0x06

void main(void)
{
port_b_pullups(TRUE);

delay_ms(100);
set_tris_a(0x2F);
set_tris_b(0xC0);

while (TRUE)
{
if(input(PIN_B7) == 1)
{
output_high(OUT);
}
else
{
output_low(OUT);
}
}

}

Mike Walne

Joined: 19 Feb 2004
Posts: 1785
Location: Boston Spa UK


Posted: Sun Apr 29, 2012 12:58 pm

How do you KNOW that pullup is not working? The code in your post does not compile. ( I get error "Undefined identifier OUT". ) Mike

2-Chri

Joined: 23 Mar 2012
Posts: 8


Posted: Sun Apr 29, 2012 2:41 pm

FInally works. I disconect the pins PGC and PGC from ICD3 to PIC and works OK! Thanks!

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