AnsweredAssumed Answered

Serial Comms

Question asked by David Wright on Feb 28, 2011
Latest reply on Mar 15, 2011 by TomE



I'm using an MCF51JM128.  I have a strange problem with my serial comms.  I am sending data through a max232N chip to a PC serial port.


I have the SCI module set up at 9600 baud with no parity.


I am sending 0x1F repeatedly and I have checked using a scope to see if the data I'm sending is being sent correctly which it is.  However when I open a comms terminal on the PC side the data received will not always be correct. 


I will receive 0xF4, if I close the port and open the port numerous times I will receive the correct data eventually.  Does anyone know why this would be the case?