diff options
Diffstat (limited to 'decoders/i2s/pd.py')
| -rw-r--r-- | decoders/i2s/pd.py | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/decoders/i2s/pd.py b/decoders/i2s/pd.py index 3287a72..e14e5a4 100644 --- a/decoders/i2s/pd.py +++ b/decoders/i2s/pd.py @@ -37,7 +37,7 @@ class SamplerateError(Exception): pass class Decoder(srd.Decoder): - api_version = 2 + api_version = 3 id = 'i2s' name = 'I²S' longname = 'Integrated Interchip Sound' @@ -61,7 +61,6 @@ class Decoder(srd.Decoder): def __init__(self): self.samplerate = None - self.oldsck = 1 self.oldws = 1 self.bitcount = 0 self.data = 0 @@ -130,18 +129,12 @@ class Decoder(srd.Decoder): lo, hi = s & 0xff, (s >> 8) & 0xff return bytes([lo, hi]) - def decode(self, ss, es, data): + def decode(self): if not self.samplerate: raise SamplerateError('Cannot decode without samplerate.') - for self.samplenum, (sck, ws, sd) in data: - - # Ignore sample if the bit clock hasn't changed. - if sck == self.oldsck: - continue - - self.oldsck = sck - if sck == 0: # Ignore the falling clock edge. - continue + while True: + # Wait for a rising edge on the SCK pin. + sck, ws, sd = self.wait({0: 'r'}) self.data = (self.data << 1) | sd self.bitcount += 1 |