Code C - [expand]
#include<P18F25k22.h>
#include<stdio.h>
#include<string.h>
#include<math.h>
#include<stdlib.h>
#include<delays.h>
#include <eep.h>
#include <spi.h>
void spi(unsigned char); //SPI Function To send the data
#pragma code // end of the code
/*-------------------------*/
void main(void)
{ //SSP1BUF = 0;
TRISCbits.RC3 =1; //sclk1 i/p
LATCbits.LATC3 = 1;
TRISCbits.RC5 =0; //sdo o/p
LATCbits.LATC5 = 0;
TRISCbits.RC4 =1; //sdi i/p
LATCbits.LATC4 = 1;
TRISAbits.RA5 = 1; // SS i/p
TRISBbits.RB5 = 0;
LATBbits.LATB5 = 1;
TRISBbits.RB6 = 0;
LATBbits.LATB6 = 1;
INTCONbits.GIE=1;
SSP1STAT =0x00;
SSP1CON1=0x25;
while(1)
{
if(SSP1STATbits.BF == 1)
{
PORTBbits.RB5 = ~PORTBbits.RB5;
PORTBbits.RB6 = SSP1BUF;
}
}
}
Slow down. Turning on the LED with a SPI command is the last piece of the chain.
#include<P18F25k22.h>
#include<stdio.h>
#include<string.h>
#include<math.h>
#include<stdlib.h>
#include<delays.h>
#include <eep.h>
#include <spi.h>
void spi(unsigned char); //SPI Function To send the data
void main(void)
{
TRISCbits.RC3 =0; //sclk1 o/p
TRISCbits.RC5 =0; //sdo o/p
TRISCbits.RC4 =1; //sdi i/p
TRISCbits.RC2 =0; //SS
TRISBbits.RB5 = 0; // LED
LATBbits.LATB5 = 0;
TRISBbits.RB6 = 0; // LED
LATBbits.LATB6 = 0;
SSP1STAT =0x40; // Transmit occurs on transition from active to Idle clock state
SSP1CON1=0x22; //Configure SSPCON1 for ENABLE SERIAL PORT
// and disable general I/O pin ,, SPI master clock= Fosc/64
INTCONbits.GIE=1; // Enable the global Interrupt
while(1) // loop for ever so that led keep repeating that pattern
{
PORTBbits.RB5 = 1; // led
PORTCbits.RC2 = 0;
spi(0x9F); // send hex to the SPI port
PORTCbits.RC2 = 1;
}
}
void spi(unsigned char myData)
{
PORTBbits.RB6 = ~PORTBbits.RB6; //led
SSP1BUF = myData; // put the data in the SSPBUF register which going to be send
while(!SSP1STATbits.BF); // wait until the all bits sended
PIR1bits.SSP1IF = 1; // clear interrupt
}
void main(void)
{
TRISBbits.RB4 = 0; // LED
LATBbits.LATB4 = 0;
TRISCbits.RC3 =0; //sclk1 o/p
TRISCbits.RC5 =0; //sdo o/p
TRISCbits.RC4 =1; //sdi i/p
TRISCbits.RC2 =0; //SS
TRISBbits.RB5 = 0; // LED
TRISBbits.RB6 = 0; // LED
SSP1STAT =0x40; // Configure SSPSTAT for transmission occur from idle to active clock and Buffer flag =0
SSP1CON1=0x22; //Configure SSPCON1 for ENABLE SERIAL PORT
// and disable general I/O pin ,, SPI master clock= Fosc/64
INTCONbits.GIE=1; // Enable the global Interrupt
while(1) // loop for ever so that led keep repeating that pattern
{
LATBbits.LATB5 = 1; //led
LATCbits.LATC2 = 0; // ss bar
spi(0x95); // send 01 hex to the SPI port it will glow the first led
spi(0x65);
LATCbits.LATC2 = 1;
Delay10TCYx(9); // 36us delay
}
}
void spi(unsigned char myData)
{
LATBbits.LATB6 = ~LATBbits.LATB6;
SSP1BUF = myData;
SSP1BUF = myData; // put the data in the SSPBUF register which going to be send
while(!SSP1STATbits.BF); // wait until the all bits sended
PIR1bits.SSP1IF = 1; // clear interrupt
}#include<P18F25k22.h>
#include<delays.h>
#include <spi.h>
#pragma code
void main(void)
{
ANSELA = 0x00; // digital input
ANSELB = 0x00;
TRISCbits.RC3 =1; //sclk1 i/p
TRISCbits.RC5 =0; //sdo o/p
TRISCbits.RC4 =1; //sdi i/p
TRISAbits.RA5 = 1; // SS i/p
TRISB = 0;
LATB = 0;
SSP1STAT =0x40;
SSP1CON1=0x24;
INTCONbits.GIE=1;
while(1)
{
LATBbits.LATB5 = 1; //led
if(SSP1STATbits.BF)
{
PORTB = SSP1BUF;
SSP1BUF = 0;
}
}
}while(1)
{
LATBbits.LATB5 = 1; //led
if(SSP1STATbits.BF)
{
PORTB = SSP1BUF;
SSP1BUF = 0;
}
}