We have a PicoCOM4 R1.20 with kernel XIPNKPC4_CORE_CF2_121029.
We experiencing problems in opening the serial port COM1 at boot time.
In our application we need both serial ports (COM1 and COM2) to communicate. Our problem is the COM1 will not initialise and error is returned when we boot up the hardware with both netdcu config utility and debug output are disabled .
To check the hardware we have booted with the debugger and opend the serial ports one by one.
Serial debug output at boot time is disabled and the netdcu config utility reports on the interface COM1. After sending the command "quit" the utility exits. The application is started and runs with no errors.
To swichtch off the netdcu config utility we have put the system/ndcucfg/port to "COM3", whitch is not used. After saving the registry we rebooted with no netdcu config utility. The terminal only reports an boot promt "<0>". That the sign that the boot loader can still be called.
Now we start our application again, but an error is returned when opening COM1.
Please help urgently, because we are about to release our hardware with the PicoCOM4 for production shortly.