HID Hi-O iCLASS Installation Guide - Manual (Page 36)

iCLASS OEM75 Integration Guide, 3141-907, Rev. B.0
Page 36 of 49 January 2014
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** the I²C SSP link.
**
** NOTES:
**
***********************************************************************/
void InitI2C (void)
{
SSP1ADD = 31; // 115200 Baud
SSP1CON1 = 0b00101000; // Master mode, clock = FOSC/(4 * (SSPxADD + 1))
SSP1CON2 = 0;
SSP1STAT = 0;
} /* InitI2C */
/***********************************************************************
** NAME:
** WriteI2C
**
** INPUTS:
** pData - points to the data to write out the I²C
** numBytes - number of bytes to transmit
**
** OUTPUTS:
** None
**
** RETURN:
** None
**
** DESCRIPTION:
** This function transmits data to an external CPU or
** peripheral device via I²C.
**
** NOTES:
**
***********************************************************************/
void WriteI2C(UBYTE *pData, UBYTE numBytes)
{
UBYTE cnt;
//
// Issue a bus start
//
sendI2CStart();
//
// Send device address.
//
if (I2C_ACK == writeByte(SLAVE_ADDR))
{
//
// Send the number of bytes in this message to the slave.
//
if (I2C_ACK == writeByte(numBytes))
{
//
// Send the message.
//