diff options
Diffstat (limited to 'decoders/maxim_ds28ea00/maxim_ds28ea00.py')
| -rw-r--r-- | decoders/maxim_ds28ea00/maxim_ds28ea00.py | 93 |
1 files changed, 47 insertions, 46 deletions
diff --git a/decoders/maxim_ds28ea00/maxim_ds28ea00.py b/decoders/maxim_ds28ea00/maxim_ds28ea00.py index 9801138..6e19115 100644 --- a/decoders/maxim_ds28ea00/maxim_ds28ea00.py +++ b/decoders/maxim_ds28ea00/maxim_ds28ea00.py @@ -22,26 +22,19 @@ import sigrokdecode as srd -# a dictionary of FUNCTION commands and their names +# Dictionary of FUNCTION commands and their names. command = { - # scratchpad - 0x4e: "WRITE SCRATCHPAD", - 0xbe: "READ SCRATCHPAD", - 0x48: "COPY SCRATCHPAD", - # thermometer - 0x44: "CONVERT TEMPERATURE", - 0xb4: "READ POWER MODE", - 0xb8: "RECALL EEPROM", - 0xf5: "PIO ACCESS READ", - 0xA5: "PIO ACCESS WRITE", - 0x99: "CHAIN", - # memory - 0xf0: "READ MEMORY", - 0xa5: "EXTENDED READ MEMORY", - 0x0f: "WRITE MEMORY", - 0x55: "WRITE STATUS", - 0xaa: "READ STATUS", - 0xf5: "CHANNEL ACCESS" + # Scratchpad + 0x4e: 'Write scratchpad', + 0xbe: 'Read scratchpad', + 0x48: 'Copy scratchpad', + # Thermometer + 0x44: 'Convert temperature', + 0xb4: 'Read power mode', + 0xb8: 'Recall EEPROM', + 0xf5: 'PIO access read', + 0xA5: 'PIO access write', + 0x99: 'Chain', } class Decoder(srd.Decoder): @@ -66,45 +59,53 @@ class Decoder(srd.Decoder): ] def __init__(self, **kwargs): - # Event timing variables self.trn_beg = 0 self.trn_end = 0 - # Transport layer variables - self.state = 'ROM' - self.rom = 0x0000000000000000 + self.state = 'ROM' + self.rom = 0x0000000000000000 def start(self, metadata): - self.out_ann = self.add(srd.OUTPUT_ANN , 'maxim_ds28ea00') + self.out_ann = self.add(srd.OUTPUT_ANN, 'maxim_ds28ea00') def report(self): pass def decode(self, ss, es, data): - [code, val] = data + code, val = data # State machine. - if (code == "RESET/PRESENCE"): - self.put(ss, es, self.out_ann, [0, ['RESET/PRESENCE: %s' % ('True' if val else 'False')]]) - self.state = "ROM" - elif (code == "ROM"): + if code == 'RESET/PRESENCE': + self.put(ss, es, self.out_ann, + [0, ['Reset/presence: %s' % ('true' if val else 'false')]]) + self.state = 'ROM' + elif code == 'ROM': self.rom = val self.put(ss, es, self.out_ann, [0, ['ROM: 0x%016x' % (val)]]) - self.state = "COMMAND" - elif (code == "DATA"): - if (self.state == "COMMAND"): - if (val in command): - self.put(ss, es, self.out_ann, [0, ['FUNCTION COMMAND: 0x%02x \'%s\'' % (val, command[val])]]) - self.state = command[val] - else: - self.put(ss, es, self.out_ann, [0, ['FUNCTION COMMAND: 0x%02x \'%s\'' % (val, 'UNRECOGNIZED')]]) - self.state = "UNRECOGNIZED" - elif (self.state == "READ SCRATCHPAD"): - self.put(ss, es, self.out_ann, [0, ['SCRATCHPAD DATA: 0x%02x' % (val)]]) - elif (self.state == "CONVERT TEMPERATURE"): - self.put(ss, es, self.out_ann, [0, ['TEMPERATURE CONVERSION STATUS: 0x%02x' % (val)]]) - elif (self.state in command.values()): - self.put(ss, es, self.out_ann, [0, ['TODO "%s": 0x%02x' % (self.state, val)]]) - elif (self.state == "UNRECOGNIZED"): - self.put(ss, es, self.out_ann, [0, ['UNRECOGNIZED COMMAND: 0x%02x' % (val)]]) + self.state = 'COMMAND' + elif code == 'DATA': + if self.state == 'COMMAND': + if val in command: + self.put(ss, es, self.out_ann, + [0, ['Function command: 0x%02x \'%s\'' + % (val, command[val])]]) + self.state = command[val].upper() + else: + self.put(ss, es, self.out_ann, + [0, ['Function command: 0x%02x \'%s\'' + % (val, 'unrecognized')]]) + self.state = 'UNRECOGNIZED' + elif self.state == 'READ SCRATCHPAD': + self.put(ss, es, self.out_ann, + [0, ['Scratchpad data: 0x%02x' % val]]) + elif self.state == 'CONVERT TEMPERATURE': + self.put(ss, es, self.out_ann, + [0, ['Temperature conversion status: 0x%02x' % val]]) + elif self.state in [s.upper() for s in command.values()]: + self.put(ss, es, self.out_ann, + [0, ['TODO \'%s\': 0x%02x' % (self.state, val)]]) + elif self.state == 'UNRECOGNIZED': + self.put(ss, es, self.out_ann, + [0, ['Unrecognized command: 0x%02x' % val]]) else: raise Exception('Invalid state: %s' % self.state) + |