HID Hi-O iCLASS Installation Guide - Manual (Page 28)

iCLASS OEM75 Integration Guide, 3141-907, Rev. B.0
Page 28 of 49 January 2014
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6.7.4 Sample Source Code
The following is sample code for implementing a Master SPI driver to talk to the OEM75.
/*============================================================
**
** FILE NAME: masterSpi.c
**
** DESCRIPTION: This file contains functions to manage the SPI message transfers.
**
** PUBLIC FUNCTIONS:
** InitSpi
** WriteSpi
** ReadSpi
**
** PRIVATE FUNCTIONS:
** sendSpiByte
**
**
**===========================================================*/
/********** Project Specific Includes **********/
#include "main.h"
#include "masterSpi.h"
/***************** Private Function Prototypes ***********************/
static void sendSpiByte(UBYTE dataOut, UBYTE *pDataIn);
#define SSPSTAT_MASTER 0x00
#define SSPCON1_MASTER 0x32
#define SPI_READ 0x00
#define SPI_WRITE 0x08
#define OEM75_SS RA5
#define SPI_DELAY 50