RogerC52

Monitoring the UART RX signal

Discussion created by RogerC52 on Mar 28, 2012
Latest reply on Mar 29, 2012 by TomE

I want to be able to read the logic level on the UART1 RX pin while the pin is assigned to the UART RX function (not as a GPIO). The SCI peripheral in the MC9S08 MCUs allows me to do this (the reference manual says so explicitly). I can't find any similar statement in the MCF5329 reference manual. If I set the PAR_U1RXD bits to 11 to map the pin to its RX function and clear the PDDR_UART bit for this pin to make it an input, will I get the pin's logic level when I read the PPDSDR_UART register? Thanks!

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