I am using MCF52259, in which i have used DMA for data transfer through UART. At higher baud rate every thing is OK, but at lower baud rate (like 300bps) controller becomes slugish. My all timing is getting messed up. Although 300bps is only required for handshaking purpose after that it moved on to higher baud rate.
Can any one help me on this? I don't want to move from DMA manual transfer, it will impact throughput.