Hello It's quite simple but it does not work. I do interrupt-driven serial communication with my custom device. This device has it own local loopback I need to prevent I thought to use RTS line to indicate to device that there is transmission so it can block its receive line. I open serial Libarary and added serSetting RTSAutoM flag But nothing happened,RTS line staysalways high Some details: I use UART in IRDA mode and using undocumented but known(through PalmPower magazine artice) SerSetWaiHandler function What is going wrong? Any help will be appriciated Thanks
