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| author | Uwe Hermann <uwe@hermann-uwe.de> | 2014-08-11 22:53:35 +0200 |
|---|---|---|
| committer | Uwe Hermann <uwe@hermann-uwe.de> | 2014-08-14 17:44:20 +0200 |
| commit | a573d3944c410d90adb5130323e0f3792d9ae201 (patch) | |
| tree | 6c434db0316e7c6f36691898d145dcccb8d224c4 /decoders/parallel/pd.py | |
| parent | f04964c696336f5699a099bbd64785f199d91f4c (diff) | |
| download | libsigrokdecode-a573d3944c410d90adb5130323e0f3792d9ae201.tar.gz libsigrokdecode-a573d3944c410d90adb5130323e0f3792d9ae201.zip | |
parallel: Enforce that at least one pin must be provided.
Diffstat (limited to 'decoders/parallel/pd.py')
| -rw-r--r-- | decoders/parallel/pd.py | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/decoders/parallel/pd.py b/decoders/parallel/pd.py index a695ca6..cafaefc 100644 --- a/decoders/parallel/pd.py +++ b/decoders/parallel/pd.py @@ -61,6 +61,9 @@ def channel_list(num_channels): l.append(d) return tuple(l) +class ChannelError(Exception): + pass + class Decoder(srd.Decoder): api_version = 2 id = 'parallel' @@ -180,6 +183,9 @@ class Decoder(srd.Decoder): continue self.oldpins = pins + if sum(1 for p in pins if p in (0, 1)) == 0: + raise ChannelError('At least one channel has to be supplied.') + if pins[0] not in (0, 1): self.handle_bits(pins[1:]) else: |