diff options
| -rw-r--r-- | decoders/sle44xx/pd.py | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/decoders/sle44xx/pd.py b/decoders/sle44xx/pd.py index 0bc3ec7..1c0cdb4 100644 --- a/decoders/sle44xx/pd.py +++ b/decoders/sle44xx/pd.py @@ -19,6 +19,9 @@ import sigrokdecode as srd +class Pin: + RST, CLK, IO, = range(3) + # CMD: [annotation-type-index, long annotation, short annotation] proto = { 'RESET': [0, 'Reset', 'R'], @@ -140,12 +143,24 @@ class Decoder(srd.Decoder): def decode(self): while True: - pins = self.wait([{0: 'r'}, {0: 'l', 1: 'r'}, {1: 'h', 2: 'f'}, {1: 'h', 2: 'r'}]) - if self.matched[0]: # RESET condition (R): RST = rising + # Signal conditions tracked by the protocol decoder: + # - RESET condition (R): RST = rising + # - Incoming data (D): RST = low, CLK = rising. + # - Command mode START: CLK = high, I/O = falling. + # - Command mode STOP: CLK = high, I/O = rising. + (COND_RESET, COND_DATA, COND_CMD_START, COND_CMD_STOP,) = range(4) + conditions = [ + {Pin.RST: 'r'}, + {Pin.RST: 'l', Pin.CLK: 'r'}, + {Pin.CLK: 'h', Pin.IO: 'f'}, + {Pin.CLK: 'h', Pin.IO: 'r'}, + ] + pins = self.wait(conditions) + if self.matched[COND_RESET]: self.handle_reset(pins) - elif self.matched[1]: # Incoming data (D): RST = low, CLK = rising. + elif self.matched[COND_DATA]: self.handle_data(pins) - elif self.matched[2]: # Command mode START: CLK = high, I/O = falling. + elif self.matched[COND_CMD_START]: self.handle_command(pins) - elif self.matched[3]: # Command mode STOP: CLK = high, I/O = rising. + elif self.matched[COND_CMD_STOP]: self.handle_command(pins) |