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| author | Uwe Hermann <uwe@hermann-uwe.de> | 2014-01-22 22:43:21 +0100 |
|---|---|---|
| committer | Uwe Hermann <uwe@hermann-uwe.de> | 2014-01-28 22:46:05 +0100 |
| commit | 4c3b1846c9c307c1c35f86d259ddb968ed92718d (patch) | |
| tree | ae696f3a6321c0dc50bf1d1cfffa54138bd2a428 /decoders/usb_packet | |
| parent | 37e4c724efa64dd6061f7bb83f126b81da949771 (diff) | |
| download | libsigrokdecode-4c3b1846c9c307c1c35f86d259ddb968ed92718d.tar.gz libsigrokdecode-4c3b1846c9c307c1c35f86d259ddb968ed92718d.zip | |
All PDs: Improve/fix descriptions.
Diffstat (limited to 'decoders/usb_packet')
| -rw-r--r-- | decoders/usb_packet/__init__.py | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/decoders/usb_packet/__init__.py b/decoders/usb_packet/__init__.py index 555dc7f..06b67b9 100644 --- a/decoders/usb_packet/__init__.py +++ b/decoders/usb_packet/__init__.py @@ -19,7 +19,8 @@ ## ''' -USB (low-speed and full-speed) packet protocol decoder. +This decoder stacks on top of the 'usb_signalling' PD and decodes the USB +(low-speed and full-speed) packet protocol. Protocol layer (USB spec, chapter 8): @@ -35,9 +36,6 @@ PID: A PID (packet identifier) follows the SYNC field of every packet. A PID consists of a 4-bit packet type field, and a 4 bit check field. The check field is the one's complement of the packet type field. -Protocol output format: -TODO - Details: https://en.wikipedia.org/wiki/USB http://www.usb.org/developers/docs/ |