##
## This file is part of the libsigrokdecode project.
##
-## Copyright (C) 2012-2015 Uwe Hermann <uwe@hermann-uwe.de>
+## Copyright (C) 2012-2020 Uwe Hermann <uwe@hermann-uwe.de>
## Copyright (C) 2019 Zhiyuan Wan <dv.xw@qq.com>
## Copyright (C) 2019 Kongou Hikari <hikari@iloli.bid>
##
##
import sigrokdecode as srd
+from common.srdhelper import SrdStrEnum
'''
OUTPUT_PYTHON format:
for each bit that is in the bitstring.
'''
-jtag_states = [
- # Intro "tree"
- 'TEST-LOGIC-RESET', 'RUN-TEST/IDLE',
- # DR "tree"
- 'SELECT-DR-SCAN', 'CAPTURE-DR', 'UPDATE-DR', 'PAUSE-DR',
- 'SHIFT-DR', 'EXIT1-DR', 'EXIT2-DR',
- # IR "tree"
- 'SELECT-IR-SCAN', 'CAPTURE-IR', 'UPDATE-IR', 'PAUSE-IR',
- 'SHIFT-IR', 'EXIT1-IR', 'EXIT2-IR',
-]
+s = 'TEST-LOGIC-RESET RUN-TEST/IDLE \
+ SELECT-DR-SCAN CAPTURE-DR UPDATE-DR PAUSE-DR SHIFT-DR EXIT1-DR EXIT2-DR \
+ SELECT-IR-SCAN CAPTURE-IR UPDATE-IR PAUSE-IR SHIFT-IR EXIT1-IR EXIT2-IR'
+St = SrdStrEnum.from_str('St', s)
+
+jtag_states = [s.value for s in St]
+
+s = 'EC SPARE TPDEL TPREV TPST RDYC DLYC SCNFMT CP OAC'.split()
+s = ['CJTAG_' + x for x in s] + ['OSCAN1', 'FOUR_WIRE']
+CSt = SrdStrEnum.from_list('CSt', s)
-cjtag_states = [
- 'CJTAG-EC', 'CJTAG-SPARE', 'CJTAG-TPDEL', 'CJTAG-TPREV', 'CJTAG-TPST',
- 'CJTAG-RDYC', 'CJTAG-DLYC', 'CJTAG-SCNFMT', 'CJTAG-CP', 'CJTAG-OAC',
- 'OSCAN1', '4-WIRE',
-]
+cjtag_states = [s.value for s in CSt]
class Decoder(srd.Decoder):
api_version = 3
self.reset()
def reset(self):
- # self.state = 'TEST-LOGIC-RESET'
- self.state = 'RUN-TEST/IDLE'
- self.cjtagstate = '4-WIRE'
+ # self.state = St.TEST_LOGIC_RESET
+ self.state = St.RUN_TEST_IDLE
+ self.cjtagstate = CSt.FOUR_WIRE
self.oldcjtagstate = None
self.escape_edges = 0
self.oaclen = 0
def advance_state_machine(self, tms):
self.oldstate = self.state
- if self.cjtagstate.startswith('CJTAG-'):
+ if self.cjtagstate.value.startswith('CJTAG_'):
self.oacp += 1
if self.oacp > 4 and self.oaclen == 12:
- self.cjtagstate = 'CJTAG-EC'
+ self.cjtagstate = CSt.CJTAG_EC
if self.oacp == 8 and tms == 0:
self.oaclen = 36
if self.oacp > 8 and self.oaclen == 36:
- self.cjtagstate = 'CJTAG-SPARE'
+ self.cjtagstate = CSt.CJTAG_SPARE
if self.oacp > 13 and self.oaclen == 36:
- self.cjtagstate = 'CJTAG-TPDEL'
+ self.cjtagstate = CSt.CJTAG_TPDEL
if self.oacp > 16 and self.oaclen == 36:
- self.cjtagstate = 'CJTAG-TPREV'
+ self.cjtagstate = CSt.CJTAG_TPREV
if self.oacp > 18 and self.oaclen == 36:
- self.cjtagstate = 'CJTAG-TPST'
+ self.cjtagstate = CSt.CJTAG_TPST
if self.oacp > 23 and self.oaclen == 36:
- self.cjtagstate = 'CJTAG-RDYC'
+ self.cjtagstate = CSt.CJTAG_RDYC
if self.oacp > 25 and self.oaclen == 36:
- self.cjtagstate = 'CJTAG-DLYC'
+ self.cjtagstate = CSt.CJTAG_DLYC
if self.oacp > 27 and self.oaclen == 36:
- self.cjtagstate = 'CJTAG-SCNFMT'
+ self.cjtagstate = CSt.CJTAG_SCNFMT
if self.oacp > 8 and self.oaclen == 12:
- self.cjtagstate = 'CJTAG-CP'
+ self.cjtagstate = CSt.CJTAG_CP
if self.oacp > 32 and self.oaclen == 36:
- self.cjtagstate = 'CJTAG-CP'
+ self.cjtagstate = CSt.CJTAG_CP
if self.oacp > self.oaclen:
- self.cjtagstate = 'OSCAN1'
+ self.cjtagstate = CSt.OSCAN1
self.oscan1cycle = 1
# Because Nuclei cJTAG device asserts a reset during cJTAG
# online activating.
- self.state = 'TEST-LOGIC-RESET'
+ self.state = St.TEST_LOGIC_RESET
return
# Intro "tree"
- if self.state == 'TEST-LOGIC-RESET':
- self.state = 'TEST-LOGIC-RESET' if (tms) else 'RUN-TEST/IDLE'
- elif self.state == 'RUN-TEST/IDLE':
- self.state = 'SELECT-DR-SCAN' if (tms) else 'RUN-TEST/IDLE'
+ if self.state == St.TEST_LOGIC_RESET:
+ self.state = St.TEST_LOGIC_RESET if (tms) else St.RUN_TEST_IDLE
+ elif self.state == St.RUN_TEST_IDLE:
+ self.state = St.SELECT_DR_SCAN if (tms) else St.RUN_TEST_IDLE
# DR "tree"
- elif self.state == 'SELECT-DR-SCAN':
- self.state = 'SELECT-IR-SCAN' if (tms) else 'CAPTURE-DR'
- elif self.state == 'CAPTURE-DR':
- self.state = 'EXIT1-DR' if (tms) else 'SHIFT-DR'
- elif self.state == 'SHIFT-DR':
- self.state = 'EXIT1-DR' if (tms) else 'SHIFT-DR'
- elif self.state == 'EXIT1-DR':
- self.state = 'UPDATE-DR' if (tms) else 'PAUSE-DR'
- elif self.state == 'PAUSE-DR':
- self.state = 'EXIT2-DR' if (tms) else 'PAUSE-DR'
- elif self.state == 'EXIT2-DR':
- self.state = 'UPDATE-DR' if (tms) else 'SHIFT-DR'
- elif self.state == 'UPDATE-DR':
- self.state = 'SELECT-DR-SCAN' if (tms) else 'RUN-TEST/IDLE'
+ elif self.state == St.SELECT_DR_SCAN:
+ self.state = St.SELECT_IR_SCAN if (tms) else St.CAPTURE_DR
+ elif self.state == St.CAPTURE_DR:
+ self.state = St.EXIT1_DR if (tms) else St.SHIFT_DR
+ elif self.state == St.SHIFT_DR:
+ self.state = St.EXIT1_DR if (tms) else St.SHIFT_DR
+ elif self.state == St.EXIT1_DR:
+ self.state = St.UPDATE_DR if (tms) else St.PAUSE_DR
+ elif self.state == St.PAUSE_DR:
+ self.state = St.EXIT2_DR if (tms) else St.PAUSE_DR
+ elif self.state == St.EXIT2_DR:
+ self.state = St.UPDATE_DR if (tms) else St.SHIFT_DR
+ elif self.state == St.UPDATE_DR:
+ self.state = St.SELECT_DR_SCAN if (tms) else St.RUN_TEST_IDLE
# IR "tree"
- elif self.state == 'SELECT-IR-SCAN':
- self.state = 'TEST-LOGIC-RESET' if (tms) else 'CAPTURE-IR'
- elif self.state == 'CAPTURE-IR':
- self.state = 'EXIT1-IR' if (tms) else 'SHIFT-IR'
- elif self.state == 'SHIFT-IR':
- self.state = 'EXIT1-IR' if (tms) else 'SHIFT-IR'
- elif self.state == 'EXIT1-IR':
- self.state = 'UPDATE-IR' if (tms) else 'PAUSE-IR'
- elif self.state == 'PAUSE-IR':
- self.state = 'EXIT2-IR' if (tms) else 'PAUSE-IR'
- elif self.state == 'EXIT2-IR':
- self.state = 'UPDATE-IR' if (tms) else 'SHIFT-IR'
- elif self.state == 'UPDATE-IR':
- self.state = 'SELECT-DR-SCAN' if (tms) else 'RUN-TEST/IDLE'
+ elif self.state == St.SELECT_IR_SCAN:
+ self.state = St.TEST_LOGIC_RESET if (tms) else St.CAPTURE_IR
+ elif self.state == St.CAPTURE_IR:
+ self.state = St.EXIT1_IR if (tms) else St.SHIFT_IR
+ elif self.state == St.SHIFT_IR:
+ self.state = St.EXIT1_IR if (tms) else St.SHIFT_IR
+ elif self.state == St.EXIT1_IR:
+ self.state = St.UPDATE_IR if (tms) else St.PAUSE_IR
+ elif self.state == St.PAUSE_IR:
+ self.state = St.EXIT2_IR if (tms) else St.PAUSE_IR
+ elif self.state == St.EXIT2_IR:
+ self.state = St.UPDATE_IR if (tms) else St.SHIFT_IR
+ elif self.state == St.UPDATE_IR:
+ self.state = St.SELECT_DR_SCAN if (tms) else St.RUN_TEST_IDLE
def handle_rising_tckc_edge(self, tdi, tdo, tck, tms):
# Output the saved item (from the last CLK edge to the current).
self.es_item = self.samplenum
# Output the old state (from last rising TCK edge to current one).
- self.putx([jtag_states.index(self.oldstate), [self.oldstate]])
- self.putp(['NEW STATE', self.state])
+ self.putx([jtag_states.index(self.oldstate.value), [self.oldstate.value]])
+ self.putp(['NEW STATE', self.state.value])
- self.putx([len(jtag_states) + cjtag_states.index(self.oldcjtagstate),
- [self.oldcjtagstate]])
- if (self.oldcjtagstate.startswith('CJTAG-')):
+ self.putx([len(jtag_states) + cjtag_states.index(self.oldcjtagstate.value),
+ [self.oldcjtagstate.value]])
+ if (self.oldcjtagstate.value.startswith('CJTAG_')):
self.putx([32, [str(self.oldtms)]])
self.oldtms = tms
# Upon SHIFT-*/EXIT1-* collect the current TDI/TDO values.
- if self.oldstate.startswith('SHIFT-') or \
- self.oldstate.startswith('EXIT1-'):
+ if self.oldstate.value.startswith('SHIFT-') or \
+ self.oldstate.value.startswith('EXIT1-'):
if self.first_bit:
self.ss_bitstring = self.samplenum
self.first_bit = False
self.bits_samplenums_tdo.insert(0, [self.samplenum, -1])
# Output all TDI/TDO bits if we just switched to UPDATE-*.
- if self.state.startswith('UPDATE-'):
+ if self.state.value.startswith('UPDATE-'):
self.es_bitstring = self.samplenum
- t = self.state[-2:] + ' TDI'
+ t = self.state.value[-2:] + ' TDI'
b = ''.join(map(str, self.bits_tdi[1:]))
h = ' (0x%x' % int('0b0' + b, 2) + ')'
s = t + ': ' + b + h + ', ' + str(len(self.bits_tdi[1:])) + ' bits'
self.bits_tdi = []
self.bits_samplenums_tdi = []
- t = self.state[-2:] + ' TDO'
+ t = self.state.value[-2:] + ' TDO'
b = ''.join(map(str, self.bits_tdo[1:]))
h = ' (0x%x' % int('0b0' + b, 2) + ')'
s = t + ': ' + b + h + ', ' + str(len(self.bits_tdo[1:])) + ' bits'
self.oldcjtagstate = self.cjtagstate
if self.escape_edges >= 8:
- self.cjtagstate = '4-WIRE'
+ self.cjtagstate = CSt.FOUR_WIRE
if self.escape_edges == 6:
- self.cjtagstate = 'CJTAG-OAC'
+ self.cjtagstate = CSt.CJTAG_OAC
self.oacp = 0
self.oaclen = 12
self.escape_edges = 0
def decode(self):
- tdi_real = 0
- tms_real = 0
- tdo_real = 0
+ tdi = tms = tdo = 0
while True:
# Wait for a rising edge on TCKC.
tckc, tmsc = self.wait({0: 'r'})
self.handle_tapc_state()
- if self.cjtagstate == 'OSCAN1':
+ if self.cjtagstate == CSt.OSCAN1:
if self.oscan1cycle == 0: # nTDI
- tdi_real = 1 if (tmsc == 0) else 0
+ tdi = 1 if (tmsc == 0) else 0
self.oscan1cycle = 1
elif self.oscan1cycle == 1: # TMS
- tms_real = tmsc
+ tms = tmsc
self.oscan1cycle = 2
elif self.oscan1cycle == 2: # TDO
- tdo_real = tmsc
- self.handle_rising_tckc_edge(tdi_real, tdo_real, tckc, tms_real)
+ tdo = tmsc
+ self.handle_rising_tckc_edge(tdi, tdo, tckc, tms)
self.oscan1cycle = 0
else:
self.handle_rising_tckc_edge(None, None, tckc, tmsc)
projects / libsigrokdecode.git / blobdiff