The JTAG Whisperer
A crude attempt at teaching an Arduino to send JTAG commands in XSVF files.
First of all, don't get your hopes up; it doesn't work yet. Now that that's out of the way...
Hook up your target's JTAG pins as follows:
- Pin 8 to TMS.
- Pin 9 to TDI.
- Pin 10 to TDO.
- Pin 11 to TCK.
Do whatever you need to do to power the device. Then try asking it its device ID as follows:
send_xsvf XC9572XL/DeviceID.xsvf /dev/tty.wherever_your_arduino_is
Although the DeviceID.xsvf file was generated with the XC9572XL in mind, it ought to fail in a meaningful way (noting that the returned ID doesn't match) with another device.
Many thanks to Ben, who adapted the Xilinx XAPP058 code into something comprehensible.