diff options
Diffstat (limited to 'decoders')
| -rw-r--r-- | decoders/rgb_led_spi/pd.py | 34 |
1 files changed, 18 insertions, 16 deletions
diff --git a/decoders/rgb_led_spi/pd.py b/decoders/rgb_led_spi/pd.py index 82877b3..899a64a 100644 --- a/decoders/rgb_led_spi/pd.py +++ b/decoders/rgb_led_spi/pd.py @@ -19,6 +19,8 @@ import sigrokdecode as srd +( ANN_RGB, ) = range(1) + class Decoder(srd.Decoder): api_version = 3 id = 'rgb_led_spi' @@ -37,34 +39,34 @@ class Decoder(srd.Decoder): self.reset() def reset(self): - self.ss_cmd, self.es_cmd = 0, 0 + self.ss_cmd = None self.mosi_bytes = [] def start(self): self.out_ann = self.register(srd.OUTPUT_ANN) - def putx(self, data): - self.put(self.ss_cmd, self.es_cmd, self.out_ann, data) + def putg(self, ss, es, cls, text): + self.put(ss, es, self.out_ann, [cls, text]) def decode(self, ss, es, data): - ptype, mosi, miso = data + ptype = data[0] - # Only care about data packets. + # Grab the payload of three DATA packets. These hold the + # RGB values (in this very order). if ptype != 'DATA': return - self.ss, self.es = ss, es - - if len(self.mosi_bytes) == 0: + _, mosi, _ = data + if not self.mosi_bytes: self.ss_cmd = ss self.mosi_bytes.append(mosi) - - # RGB value == 3 bytes - if len(self.mosi_bytes) != 3: + if len(self.mosi_bytes) < 3: return - red, green, blue = self.mosi_bytes + # Emit annotations. Invalidate accumulated details as soon as + # they were processed, to prepare the next iteration. + ss_cmd, es_cmd = self.ss_cmd, es + self.ss_cmd = None + red, green, blue = self.mosi_bytes[:3] + self.mosi_bytes.clear() rgb_value = int(red) << 16 | int(green) << 8 | int(blue) - - self.es_cmd = es - self.putx([0, ['#%.6x' % rgb_value]]) - self.mosi_bytes = [] + self.putg(ss_cmd, es_cmd, ANN_RGB, ['#{:06x}'.format(rgb_value)]) |