diff options
Diffstat (limited to 'decoders/sae_j1850_vpw/pd.py')
| -rw-r--r-- | decoders/sae_j1850_vpw/pd.py | 37 |
1 files changed, 21 insertions, 16 deletions
diff --git a/decoders/sae_j1850_vpw/pd.py b/decoders/sae_j1850_vpw/pd.py index 8faba64..4ecba5c 100644 --- a/decoders/sae_j1850_vpw/pd.py +++ b/decoders/sae_j1850_vpw/pd.py @@ -37,6 +37,11 @@ def normalize_time(t): else: return '%f' % t +class Ann: + ANN_TIME, \ + ANN_RAW, ANN_SOF, ANN_IFS, ANN_DATA, \ + ANN_PACKET = range(6) + class Decoder(srd.Decoder): api_version = 3 id = 'sae_j1850_vpw' @@ -59,10 +64,10 @@ class Decoder(srd.Decoder): ('packet', 'Packet'), ) annotation_rows = ( - ('packets', 'Packets', (5,)), - ('bytes', 'Bytes', (4,)), - ('raws', 'Raws', (1,2,3,)), - ('times', 'Times', (0,)), + ('packets', 'Packets', (Ann.ANN_PACKET,)), + ('bytes', 'Bytes', (Ann.ANN_DATA,)), + ('raws', 'Raws', (Ann.ANN_RAW, Ann.ANN_SOF, Ann.ANN_IFS,)), + ('times', 'Times', (Ann.ANN_TIME,)), ) def __init__(self): @@ -97,25 +102,25 @@ class Decoder(srd.Decoder): def handle_bit(self, ss, es, b): self.data |= (b << 7-self.count) # MSB-first - self.put(ss, es, self.out_ann, [1, ["%d" % b]]) + self.put(ss, es, self.out_ann, [Ann.ANN_RAW, ["%d" % b]]) if self.count == 0: self.datastart = ss if self.count == 7: self.csa = self.datastart # for CS self.csb = self.samplenum # for CS - self.put(self.datastart, self.samplenum, self.out_ann, [4, ["%02X" % self.data]]) + self.put(self.datastart, self.samplenum, self.out_ann, [Ann.ANN_DATA, ["%02X" % self.data]]) # add protocol parsing here if self.byte == 0: - self.put(self.datastart, self.samplenum, self.out_ann, [5, ['Priority','Prio','P']]) + self.put(self.datastart, self.samplenum, self.out_ann, [Ann.ANN_PACKET, ['Priority','Prio','P']]) elif self.byte == 1: - self.put(self.datastart, self.samplenum, self.out_ann, [5, ['Destination','Dest','D']]) + self.put(self.datastart, self.samplenum, self.out_ann, [Ann.ANN_PACKET, ['Destination','Dest','D']]) elif self.byte == 2: - self.put(self.datastart, self.samplenum, self.out_ann, [5, ['Source','Src','S']]) + self.put(self.datastart, self.samplenum, self.out_ann, [Ann.ANN_PACKET, ['Source','Src','S']]) elif self.byte == 3: - self.put(self.datastart, self.samplenum, self.out_ann, [5, ['Mode','M']]) + self.put(self.datastart, self.samplenum, self.out_ann, [Ann.ANN_PACKET, ['Mode','M']]) self.mode = self.data elif self.mode == 1 and self.byte == 4: # mode 1 payload - self.put(self.datastart, self.samplenum, self.out_ann, [5, ['Pid','P']]) + self.put(self.datastart, self.samplenum, self.out_ann, [Ann.ANN_PACKET, ['Pid','P']]) # prepare for next byte self.count = -1 @@ -143,17 +148,17 @@ class Decoder(srd.Decoder): samples = es - ss txt = normalize_time(samples / self.samplerate) - self.put(ss, es, self.out_ann, [0, [txt]]) + self.put(ss, es, self.out_ann, [Ann.ANN_TIME, [txt]]) t = timeuf(samples / self.samplerate) if self.state == 'IDLE': # detect and set speed from the size of sof if pin == self.active and t in range(self.sofl , self.sofh): - self.put(ss, es, self.out_ann, [1, ['1X SOF', 'S1', 'S']]) + self.put(ss, es, self.out_ann, [Ann.ANN_RAW, ['1X SOF', 'S1', 'S']]) self.spd = 1 self.data = 0 self.count = 0 self.state = 'DATA' elif pin == self.active and t in range(int(self.sofl / 4) , int(self.sofh / 4)): - self.put(ss, es, self.out_ann, [1, ['4X SOF', 'S4', '4']]) + self.put(ss, es, self.out_ann, [Ann.ANN_RAW, ['4X SOF', 'S4', '4']]) self.spd = 4 self.data = 0 self.count = 0 @@ -162,8 +167,8 @@ class Decoder(srd.Decoder): elif self.state == 'DATA': if t >= int(self.ifs / self.spd): self.state = 'IDLE' - self.put(ss, es, self.out_ann, [1, ["EOF/IFS", "E"]]) # EOF=239-280 IFS=281+ - self.put(self.csa, self.csb, self.out_ann, [5, ['Checksum','CS','C']]) # retrospective print of CS + self.put(ss, es, self.out_ann, [Ann.ANN_RAW, ["EOF/IFS", "E"]]) # EOF=239-280 IFS=281+ + self.put(self.csa, self.csb, self.out_ann, [Ann.ANN_PACKET, ['Checksum','CS','C']]) # retrospective print of CS self.byte = 0 # reset packet offset elif t in range(int(self.shortl / self.spd), int(self.shorth / self.spd)): if pin == self.active: |