/** Performs the data transaction described in @a p_bus_request.
*/
void I2CBusRequestProcessorEndpoint::ExecuteBusRequest( BusRequest *p_bus_request )
{
int request_type;
uint8_t addr;
uint8_t register_addr;
if ( p_bus_request != NULL )
{
if ( p_bus_request->IsLockable() )
{
p_bus_request->Lock();
}
// Sanity check
if ( 2 == p_bus_request->GetAddressBufferSize() )
{
request_type = p_bus_request->GetRequestType();
addr = p_bus_request->GetAddressBuffer()[0];
register_addr = p_bus_request->GetAddressBuffer()[1];
if ( REQUEST_READ == request_type )
{
I2cSetSlaveAddress( _i2c_fd, addr, 0 );
I2cReadBytes( _i2c_fd, register_addr,
p_bus_request->GetDataBuffer(),
p_bus_request->GetDataBufferSize() );
}
else if ( REQUEST_WRITE == request_type )
{
I2cSetSlaveAddress( _i2c_fd, addr, 0 );
I2cWriteBytes( _i2c_fd, register_addr,
p_bus_request->GetDataBuffer(),
p_bus_request->GetDataBufferSize() );
}
p_bus_request->SetRequestComplete( true );
}
// Done altering the request
if ( p_bus_request->IsBlocked() )
{
p_bus_request->Unblock();
}
if ( p_bus_request->IsLocked() )
{
p_bus_request->Unlock();
}
}
}
void ProcessWriteByteCommand( int i2cDev, uint8_t addr, const char *dataStr )
{
uint8_t dataByte[ I2C_MAX_DATA_LEN ];
uint8_t bytesParsed;
int rc;
if (( rc = I2cWriteBytes( i2cDev, addr, dataByte, bytesParsed )) != 0 )
{
fprintf(stderr, "I2cWriteBytes failed: %d\n", rc );
return;
}
} // ProcessWriteByteCommand
/**
* @brief This function send multiple bytes to I2C slave with address
* @param Buf: Buffer pointer to the data to be send
* @param Len: Data Length to be send in byte uint
* @return
* @arg TRUE: success
* @arg FALSE:fail
*/
bool I2cWriteNByte(void* I2cMasterHandle, uint8_t SlaveAddr, uint8_t RegAddr, uint8_t* Buf, uint8_t Len)
{
if(I2cSendAddr(I2cMasterHandle, SlaveAddr, RegAddr, IIC_WRITE))
{
if(I2cWriteBytes(I2cMasterHandle, Buf, Len))
{
I2cStop(I2cMasterHandle);
return TRUE;
}
}
I2cStop(I2cMasterHandle);
return FALSE;
}