I found a Bus Pirate v2go! Actually, I bought it back in 2009 to support the project and then promptly forgot about it until today. So I'm trying to get it running as I'd like to use it for some SPI stuff. Today is the first time it has been powered up since I received it in 2009.
I plug it into my MBP via USB and it creates /dev/tty.usbserial-A7004q3B. The PWR LED shows red, and the MODE LED shows green. The VREG LED is off.
Using /usr/bin/screen on OSX10.11, I try to start up a serial session:
$ screen /dev/tty.usbserial-A7004q3B 115200 8N1
No activity. No response to any keyboard input.
I've tried without the 8N1 option too.
I tried shorting PGC and PGD then powering up, to see if that made any difference, but it doesn't seem to.
I'm fairly sure my cable is OK, as I have been using it to monitor the serial console of a RPi. I tried a second cable just in case.
What do you think has happened to it? Do I need to (re)program the bootloader?
EDIT: I've now tried it from a Linux PC too - same result, no serial port activity.