diff options
Diffstat (limited to 'decoders/onewire_link/pd.py')
| -rw-r--r-- | decoders/onewire_link/pd.py | 70 |
1 files changed, 37 insertions, 33 deletions
diff --git a/decoders/onewire_link/pd.py b/decoders/onewire_link/pd.py index 2d4e089..2be0242 100644 --- a/decoders/onewire_link/pd.py +++ b/decoders/onewire_link/pd.py @@ -109,11 +109,7 @@ class Decoder(srd.Decoder): self.out_python = self.register(srd.OUTPUT_PYTHON) self.out_ann = self.register(srd.OUTPUT_ANN) - def metadata(self, key, value): - if key != srd.SRD_CONF_SAMPLERATE: - return - self.samplerate = value - + def checks(self): # Check if samplerate is appropriate. if self.options['overdrive'] == 'yes': if self.samplerate < 2000000: @@ -126,37 +122,10 @@ class Decoder(srd.Decoder): if self.samplerate < 400000: self.putm([1, ['Sampling rate is too low. Must be above ' + '400kHz for proper normal mode decoding.']]) - elif (self.samplerate < 1000000): + elif self.samplerate < 1000000: self.putm([1, ['Sampling rate is suggested to be above ' + '1MHz for proper normal mode decoding.']]) - # The default 1-Wire time base is 30us. This is used to calculate - # sampling times. - samplerate = float(self.samplerate) - - x = float(self.options['cnt_normal_bit']) / 1000000.0 - self.cnt_normal_bit = int(samplerate * x) - 1 - x = float(self.options['cnt_normal_slot']) / 1000000.0 - self.cnt_normal_slot = int(samplerate * x) - 1 - x = float(self.options['cnt_normal_presence']) / 1000000.0 - self.cnt_normal_presence = int(samplerate * x) - 1 - x = float(self.options['cnt_normal_reset']) / 1000000.0 - self.cnt_normal_reset = int(samplerate * x) - 1 - x = float(self.options['cnt_overdrive_bit']) / 1000000.0 - self.cnt_overdrive_bit = int(samplerate * x) - 1 - x = float(self.options['cnt_overdrive_slot']) / 1000000.0 - self.cnt_overdrive_slot = int(samplerate * x) - 1 - x = float(self.options['cnt_overdrive_presence']) / 1000000.0 - self.cnt_overdrive_presence = int(samplerate * x) - 1 - x = float(self.options['cnt_overdrive_reset']) / 1000000.0 - self.cnt_overdrive_reset = int(samplerate * x) - 1 - - # Organize values into lists. - self.cnt_bit = [self.cnt_normal_bit, self.cnt_overdrive_bit] - self.cnt_presence = [self.cnt_normal_presence, self.cnt_overdrive_presence] - self.cnt_reset = [self.cnt_normal_reset, self.cnt_overdrive_reset] - self.cnt_slot = [self.cnt_normal_slot, self.cnt_overdrive_slot] - # Check if sample times are in the allowed range. time_min = float(self.cnt_normal_bit) / self.samplerate @@ -187,10 +156,45 @@ class Decoder(srd.Decoder): '(%2.1fus-%2.1fus) should be inside (7.3us, 10.0us).' % (time_min * 1000000, time_max * 1000000)]]) + + def metadata(self, key, value): + if key != srd.SRD_CONF_SAMPLERATE: + return + self.samplerate = value + + # The default 1-Wire time base is 30us. This is used to calculate + # sampling times. + samplerate = float(self.samplerate) + + x = float(self.options['cnt_normal_bit']) / 1000000.0 + self.cnt_normal_bit = int(samplerate * x) - 1 + x = float(self.options['cnt_normal_slot']) / 1000000.0 + self.cnt_normal_slot = int(samplerate * x) - 1 + x = float(self.options['cnt_normal_presence']) / 1000000.0 + self.cnt_normal_presence = int(samplerate * x) - 1 + x = float(self.options['cnt_normal_reset']) / 1000000.0 + self.cnt_normal_reset = int(samplerate * x) - 1 + x = float(self.options['cnt_overdrive_bit']) / 1000000.0 + self.cnt_overdrive_bit = int(samplerate * x) - 1 + x = float(self.options['cnt_overdrive_slot']) / 1000000.0 + self.cnt_overdrive_slot = int(samplerate * x) - 1 + x = float(self.options['cnt_overdrive_presence']) / 1000000.0 + self.cnt_overdrive_presence = int(samplerate * x) - 1 + x = float(self.options['cnt_overdrive_reset']) / 1000000.0 + self.cnt_overdrive_reset = int(samplerate * x) - 1 + + # Organize values into lists. + self.cnt_bit = [self.cnt_normal_bit, self.cnt_overdrive_bit] + self.cnt_presence = [self.cnt_normal_presence, self.cnt_overdrive_presence] + self.cnt_reset = [self.cnt_normal_reset, self.cnt_overdrive_reset] + self.cnt_slot = [self.cnt_normal_slot, self.cnt_overdrive_slot] + def decode(self, ss, es, data): if not self.samplerate: raise SamplerateError('Cannot decode without samplerate.') for (self.samplenum, (owr, pwr)) in data: + if self.samplenum == 0: + self.checks() # State machine. if self.state == 'WAIT FOR FALLING EDGE': # The start of a cycle is a falling edge. |