Q2687 Multiplex of pin


#1

Hi,
I am having problems with the Multiplexing of the I/O pins. When using the Hello_world code on the Dev. Kit, everything works just fine. However when I move the Q2687 to my own hardware platform, I cannot even get the UART1 to work. I noticed that pin43, GPIO0 is producing a 32kHz square wave. On the dev kit this does not appear. To me this suggests that the pin multiplex is operating. Can anyone explain how this could have happened?


#2

For me, it looks like your hardware platform problem. 32 kHz on pin 43 may indicate that module can’t startup and clock signal appears by default (hardware).