]
optional_probes = []
options = {
- 'cnt_lc': ['Leader code time (µs)', 13500],
- 'cnt_rc': ['Repeat code time (µs)', 11250],
- 'cnt_rc_end': ['Repeat code end time (µs)', 562],
- 'cnt_accuracy': ['Accuracy range (µs)', 100],
- 'cnt_dazero': ['Data 0 time (µs)', 1125],
- 'cnt_daone': ['Data 1 time (µs)', 2250],
'polarity': ['Polarity', 'active-low'],
}
annotations = [
['bit', 'Bit'],
- ['lc', 'Leader code'],
- ['info', 'Info'],
- ['error', 'Error'],
+ ['agc-pulse', 'AGC pulse'],
+ ['longpause', 'Long pause'],
+ ['shortpause', 'Short pause'],
+ ['stop-bit', 'Stop bit'],
+ ['leader-code', 'Leader code'],
+ ['addr', 'Address'],
+ ['addr-inv', 'Address#'],
+ ['cmd', 'Command'],
+ ['cmd-inv', 'Command#'],
+ ['repeat-code', 'Repeat code'],
+ ['warnings', 'Warnings'],
]
annotation_rows = (
- ('bits', 'Bits', (0,)),
- ('fields', 'Fields', (1, 2, 3)),
+ ('bits', 'Bits', (0, 1, 2, 3, 4)),
+ ('fields', 'Fields', (5, 6, 7, 8, 9, 10)),
+ ('warnings', 'Warnings', (11,)),
)
def putx(self, data):
def putb(self, data):
self.put(self.ss_bit, self.samplenum, self.out_ann, data)
+ def putd(self, data):
+ name = self.state.title()
+ d = {'ADDRESS': 6, 'ADDRESS#': 7, 'COMMAND': 8, 'COMMAND#': 9}
+ s = {'ADDRESS': ['ADDR', 'A'], 'ADDRESS#': ['ADDR#', 'A#'],
+ 'COMMAND': ['CMD', 'C'], 'COMMAND#': ['CMD#', 'C#']}
+ self.putx([d[self.state], ['%s: 0x%02X' % (name, data),
+ '%s: 0x%02X' % (s[self.state][0], data),
+ '%s: 0x%02X' % (s[self.state][1], data), s[self.state][1]]])
+
+ def putstop(self, ss):
+ self.put(ss, ss + self.stop, self.out_ann,
+ [4, ['Stop bit', 'Stop', 'St', 'S']])
+
+ def putpause(self, p):
+ self.put(self.ss_start, self.ss_other_edge, self.out_ann,
+ [1, ['AGC pulse', 'AGC', 'A']])
+ idx = 2 if p == 'Long' else 3
+ self.put(self.ss_other_edge, self.samplenum, self.out_ann,
+ [idx, [p + ' pause', '%s-pause' % p[0], '%sP' % p[0], 'P']])
+
def __init__(self, **kwargs):
- self.ss_bit = 0
self.state = 'IDLE'
- self.data = 0
- self.count = 0
- self.ss_start = 0
- self.act_polar = 0
+ self.ss_bit = self.ss_start = self.ss_other_edge = 0
+ self.data = self.count = self.active = self.old_ir = None
def start(self):
# self.out_python = self.register(srd.OUTPUT_PYTHON)
self.out_ann = self.register(srd.OUTPUT_ANN)
- self.act_polar = 1 if self.options['polarity'] == 'active-low' else 0
- self.old_ir = self.act_polar
+ self.active = 0 if self.options['polarity'] == 'active-low' else 1
+ self.old_ir = 1 if self.active == 0 else 0
def metadata(self, key, value):
if key == srd.SRD_CONF_SAMPLERATE:
self.samplerate = value
- samplerate = float(self.samplerate)
-
- x = float(self.options['cnt_accuracy']) / 1000000.0
- self.margin = int(samplerate * x) - 1
- x = float(self.options['cnt_lc']) / 1000000.0
- self.lc = int(samplerate * x) - 1
- x = float(self.options['cnt_rc']) / 1000000.0
- self.rc = int(samplerate * x) - 1
- x = float(self.options['cnt_rc_end']) / 1000000.0
- self.rc_end = int(samplerate * x) - 1
- x = float(self.options['cnt_dazero']) / 1000000.0
- self.dazero = int(samplerate * x) - 1
- x = float(self.options['cnt_daone']) / 1000000.0
- self.daone = int(samplerate * x) - 1
- x = float(10000) / 1000000.0
- self.end = int(samplerate * x) - 1
-
- def handle_bits(self, tick):
+ self.margin = int(self.samplerate * 0.0001) - 1 # 0.1ms
+ self.lc = int(self.samplerate * 0.0135) - 1 # 13.5ms
+ self.rc = int(self.samplerate * 0.01125) - 1 # 11.25ms
+ self.dazero = int(self.samplerate * 0.001125) - 1 # 1.125ms
+ self.daone = int(self.samplerate * 0.00225) - 1 # 2.25ms
+ self.stop = int(self.samplerate * 0.000652) - 1 # 0.652ms
+
+ def handle_bit(self, tick):
ret = 0xff
if tick in range(self.dazero - self.margin, self.dazero + self.margin):
ret = 0
elif tick in range(self.daone - self.margin, self.daone + self.margin):
ret = 1
-
if ret < 2:
self.putb([0, ['%d' % ret]])
self.data = self.data * 2 + ret
self.count = self.count + 1
-
self.ss_bit = self.samplenum
- return ret
- def data_judge(self, name):
- buf = int((self.data & 0xff00) / 0x100)
- nbuf = int(self.data & 0xff)
- ret = buf & nbuf
+ def data_ok(self):
+ ret, name = (self.data >> 8) & (self.data & 0xff), self.state.title()
+ if self.count == 8:
+ self.putd(self.data)
+ self.ss_start = self.samplenum
+ return True
if ret == 0:
- self.putx([2, ['%s: 0x%02x' % (name, buf)]])
+ self.putd(self.data & 0xff)
else:
- self.putx([3, ['%s Error: 0x%04x' % (name, self.data)]])
-
+ self.putx([11, ['%s error: 0x%04X' % (name, self.data)]])
self.data = self.count = 0
self.ss_bit = self.ss_start = self.samplenum
- return ret
+ return ret == 0
def decode(self, ss, es, data):
if self.samplerate is None:
for (self.samplenum, pins) in data:
self.ir = pins[0]
- # Wait for any edge (rising or falling).
+ # Wait for an "interesting" edge, but also record the other ones.
if self.old_ir == self.ir:
continue
+ if self.ir != self.active:
+ self.ss_other_edge = self.samplenum
+ self.old_ir = self.ir
+ continue
- if self.old_ir == self.act_polar:
- b = self.samplenum - self.ss_bit
- # State machine.
- if self.state == 'IDLE':
- if b in range(self.lc - self.margin, self.lc + self.margin):
- self.putx([1, ['Leader code', 'Leader', 'LC', 'L']])
- self.data = self.count = 0
- self.state = 'ADDRESS'
- elif b in range(self.rc - self.margin, self.rc + self.margin):
- self.putx([1, ['Repeat code', 'Repeat', 'RC', 'R']])
- self.data = self.count = 0
- self.ss_bit = self.ss_start = self.samplenum
- elif self.state == 'ADDRESS':
- self.handle_bits(b)
- if self.count > 15:
- if self.data_judge(self.state) == 0:
- self.state = 'COMMAND'
- else:
- self.state = 'IDLE'
- elif self.state == 'COMMAND':
- self.handle_bits(b)
- if self.count > 15:
- self.data_judge(self.state)
- self.state = 'IDLE'
+ b = self.samplenum - self.ss_bit
+
+ # State machine.
+ if self.state == 'IDLE':
+ if b in range(self.lc - self.margin, self.lc + self.margin):
+ self.putpause('Long')
+ self.putx([5, ['Leader code', 'Leader', 'LC', 'L']])
+ self.data = self.count = 0
+ self.state = 'ADDRESS'
+ elif b in range(self.rc - self.margin, self.rc + self.margin):
+ self.putpause('Short')
+ self.putstop(self.samplenum)
+ self.samplenum += self.stop
+ self.putx([10, ['Repeat code', 'Repeat', 'RC', 'R']])
+ self.data = self.count = 0
+ self.ss_bit = self.ss_start = self.samplenum
+ elif self.state == 'ADDRESS':
+ self.handle_bit(b)
+ if self.count == 8:
+ self.state = 'ADDRESS#' if self.data_ok() else 'IDLE'
+ elif self.state == 'ADDRESS#':
+ self.handle_bit(b)
+ if self.count == 16:
+ self.state = 'COMMAND' if self.data_ok() else 'IDLE'
+ elif self.state == 'COMMAND':
+ self.handle_bit(b)
+ if self.count == 8:
+ self.state = 'COMMAND#' if self.data_ok() else 'IDLE'
+ elif self.state == 'COMMAND#':
+ self.handle_bit(b)
+ if self.count == 16:
+ self.state = 'STOP' if self.data_ok() else 'IDLE'
+ elif self.state == 'STOP':
+ self.putstop(self.ss_bit)
+ self.ss_bit = self.ss_start = self.samplenum
+ self.state = 'IDLE'
+ else:
+ raise Exception('Invalid state: %s' % self.state)
self.old_ir = self.ir
projects / libsigrokdecode.git / blobdiff