There is a issue regarding code in eeprom. while in debug mode it was showing issue at " if(I2C_transfer(i2cHandle, &i2cTransaction)) " it was not going inside i2c_transfer. I am sharing the code above. please give me a solution to fix it. I modified the i2ctmp007 example code and wrote eeprom by removing temp code.
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/*
* ======== eeprom.c ========
*/
#include <stdint.h>
#include <stddef.h>
#include <unistd.h>
/* Driver Header files */
#include <ti/drivers/GPIO.h>
#include <ti/drivers/I2C.h>
/* Example/Board Header files */
#include "Board.h"
#include "System.h"
/* Slave Addresses */
//i2cTransaction.slaveAddress = 0xA0 >>1;
//i2cTransaction.slaveAddress = 0xA1 >>1;
//i2cTransaction.slaveAddress = 0x50;
/*
* ======== mainThread ========
*/
void * mainThread( void * arg0)
{
uint8_t txBuffer[ 4 ] ;
uint8_t rxBuffer[ 4 ] ;
I2C_Handle i2cHandle;
I2C_Params i2cParams;
I2C_Transaction i2cTransaction;
/* Call driver init functions */
GPIO_init( ) ;
I2C_init( ) ;
/* Turn on user LED */
GPIO_write( Board_GPIO_LED0, Board_GPIO_LED_ON) ;
/* Create I2C for usage */
I2C_Params_init( & i2cParams) ;
i2cParams.bitRate = I2C_100kHz;
i2cHandle = I2C_open( Board_I2C0, & i2cParams) ;
if ( i2cHandle)
{
/* buffer registers */
txBuffer[ 0 ] = 0x01 ;
txBuffer[ 1 ] = 0x01 ;
txBuffer[ 2 ] = 0x42 ;
//write buffer
i2cTransaction.writeBuf = txBuffer;
i2cTransaction.writeCount = 3 ;
//read buffer
i2cTransaction.readBuf = rxBuffer;
i2cTransaction.readCount = 0 ;
//slave address
i2cTransaction.slaveAddress = ( 0x50 ) ;
/* now i write 0x42 on memory address 0x1 | 0x1 << 8 */
if ( I2C_transfer( i2cHandle, & i2cTransaction) )
{
System_printf( "success" ) ;
i2cTransaction.writeBuf = txBuffer;
i2cTransaction.writeCount = 2 ;
i2cTransaction.readBuf = rxBuffer;
i2cTransaction.readCount = 1 ;
//slave address
i2cTransaction.slaveAddress = ( 0x50 ) ;
/* now i read on memory address 0x1 | 0x1 << 8 */
if ( I2C_transfer( i2cHandle, & i2cTransaction) )
{
//success
}
else
{
System_printf( "ERROR read" ) ;
}
}
else
{
System_printf( "ERROR write" ) ;
}
}
/* Deinitialized I2C */
I2C_close( i2cHandle) ;
//Turn OFF EEPROM
return ( NULL) ;
}
Last edited by a moderator: Apr 3, 2017