/*--------------------------------------------------------------------------------------------------*/
unsigned char GLAM_EEPROMReadBytes(unsigned char reg_start, unsigned char bytes, unsigned char *buffer){
unsigned char data, i;
signed char error=0;
if( reg_start+bytes >128 )
return (2);
cli();
error += I2cStartWait(); /* send I2C start with deley */
error += I2cWriteWait(GLAM_EEPROM_ADDRESS); /* send 24AA01 address byte */
error += I2cWriteWait(reg_start); /* write first address byte for miltiple read */
error += I2cStartWait(); /* send I2C start with deley */
error += I2cWriteWait(GLAM_EEPROM_ADDRESS|0x01);/* send 24AA01 address byte and ¸read bit */
for(i=0 ; i<bytes ; i++){ /* read number of bytes */
error += I2cRead(&data); /* read one byte */
*(buffer+i) = data; /* store one byte */
if((i+1) == bytes){
error += I2cSendNak(); /* send NAK to 24AA01 to finish read */
I2cStop(); /* send stop to 24AA01 */
break; /* break for */
}
else
error += I2cSendAck(); /* send ACK to 24AA01 slave to read next byte */
}
sei();
if(error) /* error occurred? */
return (1); /* return error (1) -> communication failed */
return (0); /* return successfully */
}
/**
* @brief This function receive multiple bytes to I2C slave.
* @param Buf: Buffer pointer to hold the received data.
* @param Len: Data Length to be received
* @return None
*/
void I2cReadBytes(void* I2cMasterHandle, uint8_t* Buf, uint8_t Len)
{
while(Len--)
{
*(Buf++) = I2cReadByte(I2cMasterHandle);
if(Len == 0)
{
I2cSendNoAck(I2cMasterHandle);
}
else
{
I2cSendAck(I2cMasterHandle);
}
}
}