X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=blobdiff_plain;f=decoders%2Fjtag%2F__init__.py;h=51bb629988b11d69a6a98efbdd12003859fc3f10;hp=16cf6c6d31bffe883858c1e114a720f0edf4bb53;hb=4539e9ca58966ce3c9cad4801b16c315e86ace01;hpb=50bd5d259677faf87bb3408e111d0e833d7ba9b4 diff --git a/decoders/jtag/__init__.py b/decoders/jtag/__init__.py index 16cf6c6..51bb629 100644 --- a/decoders/jtag/__init__.py +++ b/decoders/jtag/__init__.py @@ -14,43 +14,17 @@ ## GNU General Public License for more details. ## ## You should have received a copy of the GNU General Public License -## along with this program; if not, write to the Free Software -## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## along with this program; if not, see . ## ''' -JTAG protocol decoder. - JTAG (Joint Test Action Group), a.k.a. "IEEE 1149.1: Standard Test Access Port and Boundary-Scan Architecture", is a protocol used for testing, debugging, and flashing various digital ICs. -TODO: Protocol details. - -Protocol output format (WORK IN PROGRESS!): - -JTAG packet: -[, ] - - is one of: - - 'NEW STATE': is the new state of the JTAG state machine. - Valid values: 'TEST-LOGIC-RESET', 'RUN-TEST/IDLE', 'SELECT-DR-SCAN', - 'CAPTURE-DR', 'SHIFT-DR', 'EXIT1-DR', 'PAUSE-DR', 'EXIT2-DR', 'UPDATE-DR', - 'SELECT-IR-SCAN', 'CAPTURE-IR', 'SHIFT-IR', 'EXIT1-IR', 'PAUSE-IR', - 'EXIT2-IR', 'UPDATE-IR'. - - 'IR TDI': Bitstring that was clocked into the IR register. - - 'IR TDO': Bitstring that was clocked out of the IR register. - - 'DR TDI': Bitstring that was clocked into the DR register. - - 'DR TDO': Bitstring that was clocked out of the DR register. - - ... - -All bitstrings are a sequence of '1' and '0' characters. The right-most -character in the bitstring is the LSB. Example: '01110001' (1 is LSB). - Details: https://en.wikipedia.org/wiki/Joint_Test_Action_Group http://focus.ti.com/lit/an/ssya002c/ssya002c.pdf ''' -from .pd import * - +from .pd import Decoder