PIC integrated with a MAXQ3180

[Ram Prasadh]

Hi

I am Presently Interfacing a PIC16F72 with MAXQ3180.Before doing that I am now checking spi between two Pic16f72. I have not Yet connected two PICs . I don have an other. Have to buy. I Have written a code for master operation of 1 pic. I have initiated a timer and by having a count from that , I am sending that count to the slave. I will attach my code here. Please have a look . Might be I would have left out some needed lines in the program. It would be nice if you can tell me if there are any changes or problems in the code...



/*_ _ _ _ SPI MASTER-SLAVE COMMUNICATION_ _ _ _ */
/*_ _ _ _ MASTER COMMUNICATION_ _ _ _ */

#include<htc.h>
typedef unsigned int word;
word __at 0x2007 CONFIG = _HS_OSC & _WDT_OFF & _PWRTE_OFF & _CP_OFF & _BODEN_ON;
#define SS RA5
void spiconfigure();
void delay();
void send();
void timer0();


void main(void)
{
/*_ _ _ _ SPI SUPPORT CONFIGIRATION_ _ _ _*/
unsigned char count;
for(;
{
TRISA=0; //SETTING PORTA AS OUTPUT PINS
ADCON1=0b00000110; //SETTING PORT A AS DIGITAL
TRISC=0b00010000; //SDI IS INPUT,OTHERS ARE OUTPUT
spiconfigure();
delay();
send();
delay();
timer0();
delay();
}
}

void spiconfigure()
{
/*_ _ _ _ SPI CONFIGIRATION_ _ _ _*/

SSPSTAT=0b01000000; //DATA IS TRANSMITTED ON RISING EDGE OF CLOCK
SSPCON=0b00110001; //SPI MASTER MODE,Fosc/16
SS=0; //SLAVE SELECT IS ACTIVE LOW
delay();
}


void send()
{
/*_ _ _ _ SENDING THRO SSPBUF TO SLAVE_ _ _ _*/

SSPBUF=count;
while(BF==0);
WREG=SSPBUF;
SS=0;
delay();
}

void timer0()
{
/*TIMER FOR GENERATING A COUNT*/

T0CON=0x00;
TMR0H=0xFF;
TMR0L=0XFF;
T0CONbits.TMR0ON=1;
while(INTCONbits.TMR0IF==0);
T0CONbits.TMR0ON=0;
INTCONbits.TMR0IF=0;
count=++count;
delay();
}

void delay()
{

/*DELAY FUNCTION*/

unsigned char i,j;
for(i=0;i<255;i++)
for(j=0;j<255;j++);
}