/*
06 2019 JH
 */

#ifndef _SPI_H
#define _SPI_H

#include "general.h"
#include <xc.h>
#include <stdint.h>

#define SPI_SLAVE_ID            0x40
#define SPI_SLAVE_ADDR          0x00      // A1=0,A0=0
#define SPI_SLAVE_WRITE         WRITE
#define SPI_SLAVE_READ          READ

// MCP23S08 registers definition (default, see datasheet)
#define SPI_SLAVE_IODIR         0x00
#define SPI_SLAVE_IPOL          0x01
#define SPI_SLAVE_GPINTEN       0x02
#define SPI_SLAVE_DEFVAL        0x03
#define SPI_SLAVE_INTCON        0x04
#define SPI_SLAVE_IOCON         0x05
#define SPI_SLAVE_GPPU          0x06
#define SPI_SLAVE_INTF          0x07
#define SPI_SLAVE_INTCAP        0x08
#define SPI_SLAVE_GPIO          0x09
#define SPI_SLAVE_OLAT          0x0a


#define SPI_SCK_DIR             TRISBbits.TRISB1
#define SPI_SDI_DIR            TRISBbits.TRISB2
#define SPI_SDO_DIR            TRISBbits.TRISB3

/*
#define SPI_SCK_DIR             TRISBbits.TRISB1
#define SPI_MISO_DIR            TRISBbits.TRISB2
#define SPI_MOSI_DIR            TRISBbits.TRISB3
*/
#define SPI_SS_SX1272_DIR           TRISBbits.TRISB0
#define SPI_SS_SX1272_LAT           LATBbits.LATB0

#define SPI_SS_LPS331AP_DIR         TRISCbits.TRISC0
#define SPI_SS_LPS331AP_LAT         LATCbits.LATC0


#define SPI_START 0
#define SPI_STOP 1

#define SPI_RESET_DISABLE       OUTP_HIGH
#define SPI_RESET_ENABLE        OUTP_LOW


void SPIInit(void);                                                         // init SPI in master mode
void SPIWriteSX(UINT8_T regAddr, UINT8_T data_out);                       // write data to MCP23S08 register
UINT8_T SPIReadSX(UINT8_T regAddr);                                       // read data from MCP23S08 register


#endif  /* _SPI_H */