main.c

MSP430 I2C sample code application

/*****************************************************************************/
/*  Example main program showing how to use the file "I2Croutines.c"         */
/*                                                                           */
/*  developed with IAR Embedded Workbench V2.20                              */
/*                                                                           */
/*  Texas Instruments Deutschland GmbH                                       */
/*  Christian Hernitscheck                                                   */
/*  July 2004                                                                */
/*****************************************************************************
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******************************************************************************/

#include "msp430x16x.h"

/*--- external functions of file "I2Croutines.c" ----------------------------*/
extern void InitI2C(void);
extern void EEPROM_ByteWrite(unsigned int Address,unsigned char Data);
extern unsigned char EEPROM_RandomRead(unsigned int Address);
extern unsigned char EEPROM_CurrentAddressRead(void);
extern void EEPROM_AckPolling(void);

/*---------------------------------------------------------------------------*/
void main(void)
{
  volatile unsigned char Data[6];

  WDTCTL = WDTPW+WDTHOLD;       // disable Watchdog
  P1DIR = 0xFF;                 // termination of unused pins
  P2DIR = 0xFF;
  P3DIR = 0xF5;
  P4DIR = 0xFF;
  P5DIR = 0xFF;
  P6DIR = 0xFF;

  InitI2C();                    // Initialize I2C module
  _EINT();

  EEPROM_ByteWrite(0x0000,0x12);
  EEPROM_AckPolling();          // Wait for EEPROM write cycle completion
  EEPROM_ByteWrite(0x0001,0x34);
  EEPROM_AckPolling();          // Wait for EEPROM write cycle completion
  EEPROM_ByteWrite(0x0002,0x56);
  EEPROM_AckPolling();          // Wait for EEPROM write cycle completion
  EEPROM_ByteWrite(0x0003,0x78);
  EEPROM_AckPolling();          // Wait for EEPROM write cycle completion
  EEPROM_ByteWrite(0x0004,0x9A);
  EEPROM_AckPolling();          // Wait for EEPROM write cycle completion
  EEPROM_ByteWrite(0x0005,0xBC);
  EEPROM_AckPolling();          // Wait for EEPROM write cycle completion

  Data[0] = EEPROM_RandomRead(0x0000);    // Read from address 0x0000
  Data[1] = EEPROM_CurrentAddressRead();  // Read from address 0x0001
  Data[2] = EEPROM_CurrentAddressRead();  // Read from address 0x0002
  Data[3] = EEPROM_CurrentAddressRead();  // Read from address 0x0003
  Data[4] = EEPROM_CurrentAddressRead();  // Read from address 0x0004
  Data[5] = EEPROM_CurrentAddressRead();  // Read from address 0x0005

  while (1);
}