X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=decoders%2Fjitter%2Fpd.py;h=d6db8e599cb8c1905f75db07c39e7d07a2e38815;hb=a4b5d9a99e4d202ccd65bc77624949e68a858e3a;hp=b6564adf32403823ec287c998dddd580e27653d9;hpb=34cfd419098c5a9dc32270308c5e55e9c6893e91;p=libsigrokdecode.git diff --git a/decoders/jitter/pd.py b/decoders/jitter/pd.py index b6564ad..d6db8e5 100644 --- a/decoders/jitter/pd.py +++ b/decoders/jitter/pd.py @@ -59,6 +59,9 @@ class Decoder(srd.Decoder): ('clk_missed', 'Clock missed', (1,)), ('sig_missed', 'Signal missed', (2,)), ) + binary = ( + ('ascii-float', 'Jitter values as newline-separated ASCII floats'), + ) def __init__(self, **kwargs): self.state = 'CLK' @@ -74,6 +77,7 @@ class Decoder(srd.Decoder): self.clk_edge = edge_detector[self.options['clk_polarity']] self.sig_edge = edge_detector[self.options['sig_polarity']] self.out_ann = self.register(srd.OUTPUT_ANN) + self.out_bin = self.register(srd.OUTPUT_BINARY) self.out_clk_missed = self.register(srd.OUTPUT_META, meta=(int, 'Clock missed', 'Clock transition missed')) self.out_sig_missed = self.register(srd.OUTPUT_META, @@ -101,6 +105,15 @@ class Decoder(srd.Decoder): self.put(self.clk_start, self.sig_start, self.out_ann, [0, [delta_s]]) + # Helper function for ASCII float jitter values (one value per line). + def putb(self, delta): + if delta is None: + return + # Format the delta to an ASCII float value terminated by a newline. + x = str(delta) + '\n' + self.put(self.clk_start, self.sig_start, self.out_bin, + (0, x.encode('UTF-8'))) + # Helper function for missed clock and signal annotations. def putm(self, data): self.put(self.samplenum, self.samplenum, self.out_ann, data) @@ -125,7 +138,7 @@ class Decoder(srd.Decoder): # occurs while we are waiting for a clock, # we increase the missed signal counter. self.sig_missed += 1 - self.put(ss, self.samplenum, self.out_sig_missed, self.sig_missed) + self.put(self.samplenum, self.samplenum, self.out_sig_missed, self.sig_missed) self.putm([2, ['Missed signal', 'MS']]) # No clock edge found, we have done everything we # can with this sample. @@ -144,7 +157,9 @@ class Decoder(srd.Decoder): self.sig_start = self.samplenum self.state = 'CLK' # Calculate and report the timing jitter. - self.putx((self.sig_start - self.clk_start) / self.samplerate) + delta = (self.sig_start - self.clk_start) / self.samplerate + self.putx(delta) + self.putb(delta) return False else: if self.clk_start != self.samplenum \ @@ -153,7 +168,7 @@ class Decoder(srd.Decoder): # occurs while we are waiting for a resulting # signal, we increase the missed clock counter. self.clk_missed += 1 - self.put(ss, self.samplenum, self.out_clk_missed, self.clk_missed) + self.put(self.samplenum, self.samplenum, self.out_clk_missed, self.clk_missed) self.putm([1, ['Missed clock', 'MC']]) # No resulting signal edge found, we have done # everything we can with this sample.