A10s UART0 debug port text is garbled

Started by kbro, January 24, 2014, 02:57:45 PM

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I've connected up a PL2303 USB-to-serial adapter from UART0 to my Macbook Air (OSX10.9) and used ZTerm as the terminal emulator set to 115200 baud, 8 bits, no parity, 1 stop bit.  But all I get is garbage when I boot my A10s-4GB Android board.

I've tried the same from Windows 7 using PuTTY with the same result.

I can adb shell to the board and run "busybox stty -a -F /dev/console" and this tells me 115200,8,N,1 are the right settings.

I've got TX,RX,GND connected and, yes, I've crossed TX and RX.

What am I doing wrong?  Thanks!


Are the voltage levels correct for that?



Spot on, John.  My PL2303 USB-to-serial adapter also had an RS232 level-shifter in it.  Silly me.  I hacked another cable that does TTL voltages and, hey presto, everything worked with 115200,8,N,1.