Signalyzer

The Signalyzer I ordered arrived a couple of days ago. I tried hooking it up to the Hava Titanium HD board and running the OpenOCD JTAG software. OpenOCD can read the chip’s CPUTAPID (0×19261013) but doesn’t seem able to control the chip or read memory. I suspect that it’s just that my OpenOCD configuration file is wrong. I cobbled one together based on info on the web but don’t really know yet what the memory map of the board is.

The Signalyzer has two logic level serial ports built in. That’s one of the extra features that made me decide to buy the Signalyzer instead of one of the other USB JTAG pods. A lot of boards have only logic level ports available since the manufacturer doesn’t intend the end user to use the port. You can take a USB serial cable and modify it to do TTL instead of RS232 but this saves me the trouble.

The HAVA box runs Linux so it’s console is probably available on the IXP430 serial port. I’m going to try to trace the pin out of the serial port and make up a serial cable. There’s a 6 pin connector (J21) that I suspect is a logic level serial serial port. It has an unpopulated 16 pin spot next to it that looks like it might be for a RS232 driver/receiver chip. I just need to trace the signals from J21 to the IXP430 chip to see what pins are transmit and receive.