[sigrok-devel] [ANNOUNCE] New protocol decoder: JTAG

[Uwe H. <uw...@he...>]

We're happy to announce libsigrokdecode support for a new protocol decoder:

  JTAG - Join Test Action Group, a protocol for testing, debugging, and
         flashing various ICs.

There are a few TODOs left to be fixed, but the decoder already works
quite well, and is useful for many purposes.

Sample dumps are available in the sigrok-dumps repository:

  $ git clone git://sigrok.git.sourceforge.net/gitroot/sigrok/sigrok-dumps

Example output:

  $ sigrok-cli -i olimex_stm32-h103_irscan_drscan.sr \
    -a jtag:tdi=1:tms=2:tck=3:tdo=4

  jtag: "New state: SELECT-DR-SCAN" 
  jtag: "New state: SELECT-IR-SCAN" 
  jtag: "New state: CAPTURE-IR" 
  jtag: "New state: SHIFT-IR" 
  jtag: "New state: SHIFT-IR" 
  jtag: "New state: SHIFT-IR" 
  jtag: "New state: SHIFT-IR" 
  jtag: "New state: SHIFT-IR" 
  jtag: "New state: SHIFT-IR" 
  jtag: "New state: SHIFT-IR" 
  jtag: "New state: SHIFT-IR" 
  jtag: "New state: SHIFT-IR" 
  jtag: "New state: EXIT1-IR" 
  jtag: "IR TDI: 11111110, 8 bits" 
  jtag: "IR TDO: 11110001, 8 bits" 
  jtag: "New state: UPDATE-IR" 
  jtag: "New state: RUN-TEST/IDLE" 
  jtag: "New state: SELECT-DR-SCAN" 
  jtag: "New state: CAPTURE-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: SHIFT-DR" 
  jtag: "New state: EXIT1-DR" 
  jtag: "DR TDI: 00000000000000000000000000000000, 32 bits" 
  jtag: "DR TDO: 00111011101000000000010001110111, 32 bits" 
  jtag: "New state: PAUSE-DR" 
  jtag: "New state: EXIT2-DR" 
  jtag: "New state: UPDATE-DR" 
  jtag: "New state: RUN-TEST/IDLE" 

Additional chip-specific protocol decoders which stack on top of the
generic JTAG decoder are planned, the first one will be an ST STM32
specific one.

See also: http://sigrok.org/wiki/Protocol_decoders.


Uwe.
-- 
http://hermann-uwe.de     | http://sigrok.org
http://randomprojects.org | http://unmaintained-free-software.org