diff options
Diffstat (limited to 'scripts/transitioncounter.py')
| -rw-r--r-- | scripts/transitioncounter.py | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/scripts/transitioncounter.py b/scripts/transitioncounter.py index df7e27e..05a07e3 100644 --- a/scripts/transitioncounter.py +++ b/scripts/transitioncounter.py @@ -24,6 +24,9 @@ def sigrokdecode_count_transitions(inbuf): outbuf = '' + # FIXME: Get the data in the correct format in the first place. + inbuf = [ord(x) for x in inbuf] + # TODO: Don't hardcode the number of channels. channels = 8 @@ -36,18 +39,22 @@ def sigrokdecode_count_transitions(inbuf): # print type(inbuf) # Presets... - s = ord(inbuf[0]) + oldbyte = inbuf[0] for i in xrange(channels): - curbit = (s & (1 << i) != 0) - oldbit[i] = curbit + oldbit[i] = (oldbyte & (1 << i)) != 0 # Loop over all samples. # TODO: Handle LAs with more/less than 8 channels. for s in inbuf: - s = ord(s) # FIXME + # Optimization: Skip identical bytes (no transitions). + if oldbyte == s: + continue for i in xrange(channels): curbit = (s & (1 << i) != 0) - if (oldbit[i] == 0 and curbit == 1): + # Optimization: Skip identical bits (no transitions). + if oldbit[i] == curbit: + continue + elif (oldbit[i] == 0 and curbit == 1): rising[i] += 1 elif (oldbit[i] == 1 and curbit == 0): falling[i] += 1 |