UInt32 getBufferFromI2C0(UInt8 addr, UInt8 *buffer, UInt32 len)
{
UInt32 i;
UInt8 status;
UInt8 *ptr;
ptr = buffer;
if( i2c0_start()!=I2C_OK)
{
//DebugPrintf("GetBufferFromI2C0.i2c0_start I2C_ERROR\r\n");
//i2c0_stop();
return I2C_ERROR;
}
addr = addr|1;
while( i2c0_write(addr) == I2C_BUSY);
for(i=0;i<len;i++)
{
while(1)
{
GET_I2C_STATUS();
/*
* SLA+R transmitted, ACK received or
* SLA+R transmitted, ACK not received
* data byte received in master mode, ACK transmitted
*/
if((status == 0x40 ) || (status == 0x48 ) || (status == 0x50 ))
{
if(i==len-1)
{
SEND_NACK();
}
else
{
SEND_ACK();
}
while(i2c0_read(ptr)==I2C_EMPTY);
ptr++;
break;
}
else if(status != 0xf8 )
{
i2c0_stop();
//DebugPrintf("GetBufferFromI2C0 I2C_ERROR\r\n");
return I2C_ERROR;
}
}//while(1)
}//for
i2c0_stop();
return I2C_OK;
}
/**
* Returns raw data from sensor
*
* @param adr adress of sensor
* @return Data from sensor
*/
signed int lm75_get_temp_raw(unsigned char adr)
{
unsigned char a[2];
i2c0_start(adr);
i2c0_receive(a, 2);
i2c0_stop();
return ((a[0] << 8) | a[1]) >> 7;
}
UInt32 sendBufferToI2C0(UInt8 addr, UInt8 *buffer, UInt32 len)
{
UInt32 i;
//send start condition
if(i2c0_start()!=I2C_OK)
{
//i2c0_stop();
//DebugPrintf("SendBufferToI2C0.i2c0_start\r\n");
return I2C_ERROR_START;
}
//send address
SEND_AND_WAIT(addr);
for(i=0;i<len;i++)
{
SEND_AND_WAIT(buffer[i]);
}
i2c0_stop();
//DebugPrintf("SendBufferToI2C0 I2C_OK\r\n");
return I2C_OK;
}