we are just in the first steps of evaluating processors for our next generation product, which is supposed to be linux based and needs do support a couple of serial communication protocols. For a number of RS485 based protocols it is vital to disable the transceiver fast and reliable after sending some data. As far as I can see from other posts there is no support in the UART of the current line of SITARA processors for automatically disabling the transceiver; one has to depend on the software driver to do that job. At high baud rates this can well be critical timing. Is there any work in progress to add such an automatic RS485 feature to the buildin UARTS?
Would it be a viable solution to have a PRU (with or without UART) based serial driver to support reliable and fast RS485 data direction switching?
