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Altera_Forum
Honored Contributor
Honored ContributorUART Transmitter Sends Bytes Out of Order
Hello, I have the following Verilog code which sends 8 bytes to the serial port successively after a button is pressed. The problem is, the bytes are sent out of order as to what I would e...
Altera_ForumHonored Contributor
Honored ContributorThere isn't quite enough here to go on, but I'll hazard a guess. The code for uart1 is critical.
If the isTransmitting signal is generated using a clocked process, (sorry for the terminology, I'm a VHDL guy) the isTransmitting signal will go high at least 1 clock after begin_transmit is set high. This will cause if(!isTransmitting) to be true. A Verilog simulator would probably show you exactly what is going on. If you are still stuck on this, post the uart code. It will help fill in the gaps.
