I want to use the peripheral expansion on my C6713 DSK to communicate with a number of items attached to an RS-485 bus.
So far, I have configured the mcBSP as a UART and can talk to a daughter card using it. But to convert to RS-485, I need to be able to enable/disable the DE and RE (driver enable, receive enable) pins on the RS-485 chip.
However, with the UART code I got from the Driver Development Kit, it doesn't look like there is a signal available for that. (Maybe I'm missing something?)
Has anyone done this before (converted from mcbsp to rs-485), or is there a chip already available that can convert directly from mcbsp to rs-485 ?