diff options
Diffstat (limited to 'decoders/i2s/i2s.py')
| -rw-r--r-- | decoders/i2s/i2s.py | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/decoders/i2s/i2s.py b/decoders/i2s/i2s.py index d627ebb..b81f2dd 100644 --- a/decoders/i2s/i2s.py +++ b/decoders/i2s/i2s.py @@ -38,10 +38,12 @@ class Decoder(srd.Decoder): probes = [ {'id': 'sck', 'name': 'SCK', 'desc': 'Bit clock line'}, {'id': 'ws', 'name': 'WS', 'desc': 'Word select line'}, - {'id': 'sd', 'name': 'SD', 'desc': 'Serial Data line'}, + {'id': 'sd', 'name': 'SD', 'desc': 'Serial data line'}, ] + optional_probes = [] + options = {} annotations = [ - ['ASCII', 'Annotations in ASCII format'], + ['Hex', 'Annotations in hex format'], ] def __init__(self, **kwargs): @@ -62,12 +64,12 @@ class Decoder(srd.Decoder): def report(self): - # Calculate the sample rate + # Calculate the sample rate. samplerate = '?' if self.start_sample != None and \ self.first_sample != None and \ self.start_sample > self.first_sample: - samplerate = "%d" % (self.samplesreceived * + samplerate = '%d' % (self.samplesreceived * self.samplerate / (self.start_sample - self.first_sample)) @@ -82,26 +84,26 @@ class Decoder(srd.Decoder): continue self.oldsck = sck - if sck == 0: # Ignore the falling clock edge + if sck == 0: # Ignore the falling clock edge. continue self.data = (self.data << 1) | sd self.bitcount += 1 - # This was not the LSB unless WS has flipped + # This was not the LSB unless WS has flipped. if ws == self.oldws: continue - # Only submit the sample, if we received the beginning of it + # Only submit the sample, if we received the beginning of it. if self.start_sample != None: self.samplesreceived += 1 self.put(self.start_sample, self.samplenum, self.out_proto, - ['data', self.data]) + ['data', self.data]) self.put(self.start_sample, self.samplenum, self.out_ann, - [ANN_HEX, ['%s: 0x%08x' % ('L' if self.oldws else 'R', - self.data)]]) + [ANN_HEX, ['%s: 0x%08x' % ('L' if self.oldws else 'R', + self.data)]]) - # Check that the data word was the correct length + # Check that the data word was the correct length. if self.wordlength != -1 and self.wordlength != self.bitcount: self.put(self.start_sample, self.samplenum, self.out_ann, [ANN_HEX, ['WARNING: Received a %d-bit word, when a ' @@ -115,9 +117,9 @@ class Decoder(srd.Decoder): self.bitcount = 0 self.start_sample = self.samplenum - # Save the first sample position + # Save the first sample position. if self.first_sample == None: self.first_sample = self.samplenum self.oldws = ws -
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