diff options
| -rw-r--r-- | decoders/sdq/pd.py | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/decoders/sdq/pd.py b/decoders/sdq/pd.py index c65faa8..d37458d 100644 --- a/decoders/sdq/pd.py +++ b/decoders/sdq/pd.py @@ -23,6 +23,12 @@ import sigrokdecode as srd class SamplerateError(Exception): pass +class Pin: + SDQ, = range(1) + +class Ann: + BIT, BYTE, BREAK, = range(3) + class Decoder(srd.Decoder): api_version = 3 id = 'sdq' @@ -45,9 +51,9 @@ class Decoder(srd.Decoder): ('break', 'Break'), ) annotation_rows = ( - ('bits', 'Bits', (0,)), - ('bytes', 'Bytes', (1,)), - ('breaks', 'Breaks', (2,)), + ('bits', 'Bits', (Ann.BIT,)), + ('bytes', 'Bytes', (Ann.BYTE,)), + ('breaks', 'Breaks', (Ann.BREAK,)), ) def puts(self, data): @@ -77,16 +83,16 @@ class Decoder(srd.Decoder): def handle_bit(self, bit): self.bits.append(bit) - self.putetu([0, ['Bit: %d' % bit, '%d' % bit]]) + self.putetu([Ann.BIT, ['Bit: %d' % bit, '%d' % bit]]) if len(self.bits) == 8: byte = bitpack(self.bits) - self.putbetu([1, ['Byte: %#04x' % byte, '%#04x' % byte]]) + self.putbetu([Ann.BYTE, ['Byte: %#04x' % byte, '%#04x' % byte]]) self.bits = [] self.bytepos = 0 def handle_break(self): - self.puts([2, ['Break', 'BR']]) + self.puts([Ann.BREAK, ['Break', 'BR']]) self.bits = [] self.startsample = self.samplenum self.bytepos = 0 @@ -100,14 +106,14 @@ class Decoder(srd.Decoder): break_threshold = self.bit_width * 1.2 # Wait until the line is high before inspecting input data. - sdq, = self.wait({0: 'h'}) + sdq, = self.wait({Pin.SDQ: 'h'}) while True: # Get the length of a low pulse (falling to rising edge). - sdq, = self.wait({0: 'f'}) + sdq, = self.wait({Pin.SDQ: 'f'}) self.startsample = self.samplenum if self.bytepos == 0: self.bytepos = self.samplenum - sdq, = self.wait({0: 'r'}) + sdq, = self.wait({Pin.SDQ: 'r'}) # Check for 0 or 1 data bits, or the BREAK symbol. delta = self.samplenum - self.startsample |