Implementing RS232/UART with GPIOs on ADUC702X ARM uC

Development Boards MicroMod
1

Hi,

I’m using aduc7022 microcontroller custom board and I have two GPIO pins (SPM4, SPM5) I want to use as RS232 Tx and Rx. (http://www.keil.com/dd/docs/datashts…duc702x_ds.pdf)

Is there any white paper, a reference source or any kind of information that might be useful on these kind of microcontrollers about implementing RS232 on GPIO ports ?

Thank you for your help in advance,

2

Just do a Google-search for “software uart”.

This one from IAR is very simple. All you need is a timer. http://supp.iar.com/Support/?note=88469

3

thank you for your help :slight_smile: