I am trying to communicate these two pics, 16F18346 as Master and 16F1829 as Slave. The exersice is simple master sends 1 and 0 every 5s and turns an LED on and off on slave. The result is nothing. I mean nothing happening. I am on it two days and my ideas are finished. If someone can see the code and if he can see anyyhing that can help.
Code: Select all
THIS is SLAVE code
/******************************************************************************/
/* Files to Include */
/******************************************************************************/
#if defined(__XC)
#include <xc.h> /* XC8 General Include File */
#elif defined(HI_TECH_C)
#include <htc.h> /* HiTech General Include File */
#endif
#include <stdint.h> /* For uint8_t definition */
#include <stdbool.h>
#include <pic16f1829.h> /* For true/false definition */
#include "system.h" /* System funct/params, like osc/peripheral config */
#include "user.h" /* User funct/params, such as InitApp */
/******************************************************************************/
/* User Global Variable Declaration */
/******************************************************************************/
#define _XTAL_FREQ 4000000
#define LED PORTBbits.RB7
/* i.e. uint8_t <variable_name>; */
char incoming = 0;
/******************************************************************************/
/* Main Program */
/******************************************************************************/
void SPI_Slave_Init();
void SPI_Write(unsigned char data);
unsigned char SPI_Read();
void main(void)
{
/* Configure the oscillator for the device */
ConfigureOscillator();
// SCS INTOSC; SPLLEN disabled; IRCF 4MHz_HF;
OSCCON = 0x6A;
// TUN 0;
OSCTUNE = 0x00;
// SBOREN disabled;
BORCON = 0x00;
/* Initialise I/O and Peripherals for application */
InitApp();
SPI_Slave_Init();
LED = 0; //LED = off
while(1)
{
incoming = SPI_Read();
switch(incoming){
case 1: LED = 1; //LED on
break;
case 0: LED = 0; //LED off
break;
}
}
}
void SPI_Slave_Init()
{
// SSPEN=1 Enable spi, SSPM=0b0101 SPI Slave mode,SSx pin control disabled
SSP1CON1 = 0x25;
// CKE=1, SMP=0 Input data sampled at middle of data output time
SSP1STAT = 0x40;
SSP1ADD = 0x00;
TRISB = 0x70;// 0b0111 000 RB4->SDI, RB6->SCK, RB7->LED
TRISC = 0x0F;// 0b0000 1111 RC7->SDO
ANSELB = 0x20;// 0b0010 0000
ANSELC = 0x4F;// 0b0100 1111
/**
APFCONx registers
*/
APFCON0 = 0x00;
APFCON1 = 0x00;
TRISBbits.TRISB6 = 1;
}
void SPI_Write(unsigned char data)
{
SSP1BUF = data; /* Copy data in SSBUF to transmit */
while(!SSP1STATbits.BF);
}
unsigned char SPI_Read()
{
while(!SSP1STATbits.BF); /* Wait for complete 1 byte transmission */
return(SSP1BUF); /* Return received byte */
}Code: Select all
THIS is MASTER code
/******************************************************************************/
/* Files to Include */
/******************************************************************************/
#if defined(__XC)
#include <xc.h> /* XC8 General Include File */
#elif defined(HI_TECH_C)
#include <htc.h> /* HiTech General Include File */
#endif
#include <stdint.h> /* For uint8_t definition */
#include <stdbool.h> /* For true/false definition */
#include "system.h" /* System funct/params, like osc/peripheral config */
#include "user.h" /* User funct/params, such as InitApp */
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
/******************************************************************************/
/* User Global Variable Declaration */
/******************************************************************************/
#define _XTAL_FREQ 4000000
/* i.e. uint8_t <variable_name>; */
/******************************************************************************/
/* Main Program */
/******************************************************************************/
void SPI_Master_Init();
void SPI_Write(unsigned char spidata);
unsigned char SPI_Read();
unsigned char DataRdySPI( void );
void main(void)
{
/* Configure the oscillator for the device */
ConfigureOscillator();
// NOSC HFINTOSC; NDIV 4;
OSCCON1 = 0x62;
// CSWHOLD may proceed; SOSCPWR Low power; SOSCBE crystal oscillator;
OSCCON3 = 0x00;
// LFOEN disabled; ADOEN disabled; SOSCEN disabled; EXTOEN disabled; HFOEN disabled;
OSCEN = 0x00;
// HFFRQ 4_MHz;
OSCFRQ = 0x03;
// HFTUN 0;
OSCTUNE = 0x00;
/* Initialise I/O and Peripherals for application */
InitApp();
SPI_Master_Init();
while(1)
{
SPI_Write(0x01);
__delay_ms(5000);
SPI_Write(0x00);
__delay_ms(5000);
}
}
void SPI_Master_Init()
{
// SSPEN=1, CKP=0, SSPM=0b0000 SPI Master mode, clock = FOSC/4
SSP1CON1 = 0x20;
// CKE=1, SMP=0 Input data sampled at middle of data output time
SSP1STAT = 0x40;
SSP1ADD = 0x01;
// Configure The IO Pins For SPI Master Mode
TRISB = 0xB0; // 0b1011 0000 RB4->SDI, RB6->SCK
TRISC = 0xBF; // 0b1011 1111 RC6->SDO
ANSELB = 0xA0;// 0b1010 0000
ANSELC = 0xB0;// 0b1111 1111
SSP1CLKPPS = 0x0E; // RB6->MSSP1:SCK1;
RB6PPS = 0x18; // RB6->MSSP1:SCK1;
RC6PPS = 0x19; // RC6->MSSP1:SDO1;
SSP1DATPPS = 0x0C; // RB4->MSSP1:SDI1;
}
void SPI_Write(unsigned char spidata)
{
unsigned char Flush_Bufer;
SSP1BUF = spidata;
while(!SSP1STATbits.BF);
Flush_Bufer = SSP1BUF;
}
unsigned char SPI_Read()
{
while(!SSP1STATbits.BF); /* Wait for complete 1 byte transmission */
return(SSP1BUF); /* Return received byte */
}
