Monorom Deb

Need Help on MCF52259 UART access using DMA at lower baud rate having problem...

Discussion created by Monorom Deb on May 31, 2012
Latest reply on Jun 2, 2012 by Mark Butcher



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.