Basic I2C for 12F675 problems

[apl01]

Hi,

i am trying to use I2C between master and slave. I have read a lot of posts and experimented but cant get comms working. I am trying to get the master to send 0x20 to the slave and then for the slave to receive it and turn on Pin_A2 but nothing happens?

Master

#include <12F675.h>
#device adc=8
#FUSES NOWDT, INTRC_IO, NOCPD, NOPROTECT, NOMCLR, NOPUT, NOBROWNOUT
#use delay(clock=4000000)
#use i2c(master,fast,SDA=PIN_A0,SCL=PIN_A1)

void main()
{

while(1){

i2c_start();
i2c_write(0xA0);
i2c_write(0x20);
i2c_stop();
}

}


Slave

#include <12F675.h>
#device adc=8

#FUSES NOWDT //No Watch Dog Timer
#FUSES RC //Resistor/Capacitor Osc with CLKOUT
#FUSES NOCPD //No EE protection
#FUSES NOPROTECT //Code not protected from reading
#FUSES MCLR //Master Clear pin enabled
#FUSES NOPUT //No Power Up Timer
#FUSES BROWNOUT //Reset when brownout detected
#use i2c(SLAVE, SDA=PIN_A0, SCL=PIN_A1, address=0xA0, FORCE_HW)
#use delay(clock=4000000)

void main()
{
BYTE incoming;

while(1){

incoming = i2c_read();

if(incoming=0x20)
output_high(PIN_A2);


}

}[/quote]

[PCM programmer]

The 12F675 does not have an SSP module. The #use i2c() statement
only works with a hardware i2c module. The CCS manual says:

[apl01]

Ok, can i use rs232 instead of I2C? I have developed some rs232 code similar to that of the I2C code above which doesn't work should i post a new topic?

[PCM programmer]

If it doesn't work, then post it.