From: Bert Vermeulen Date: Sun, 15 Jan 2012 03:02:21 +0000 (+0100) Subject: CLI: when invoked with only -a , the PD's documentation is shown. X-Git-Tag: libsigrokdecode-0.1.0~139 X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=87998e973f16206be1391f87ccae7c2756baf353;p=libsigrokdecode.git CLI: when invoked with only -a , the PD's documentation is shown. --- diff --git a/decoders/ddc.py b/decoders/ddc.py index 123881f..2336159 100644 --- a/decoders/ddc.py +++ b/decoders/ddc.py @@ -16,16 +16,13 @@ ## You should have received a copy of the GNU General Public License ## along with this program; if not, If not, see . ## +""" +This decoder extracts a DDC stream from an I2C session between a computer +and a display device. The stream is output as plain bytes. -# -# DDC protocol decoder -# -# This decoder extracts a DDC stream from an I2C session between a computer -# and a display device. The stream is output as plain bytes. -# -# Details: -# https://en.wikipedia.org/wiki/Display_Data_Channel -# +Details: +https://en.wikipedia.org/wiki/Display_Data_Channel +""" import sigrokdecode as srd diff --git a/decoders/i2c.py b/decoders/i2c.py index 0044190..e63ab85 100644 --- a/decoders/i2c.py +++ b/decoders/i2c.py @@ -22,7 +22,6 @@ # I2C protocol decoder # -# # The Inter-Integrated Circuit (I2C) bus is a bidirectional, multi-master # bus using two signals (SCL = serial clock line, SDA = serial data line). # @@ -69,26 +68,28 @@ # TODO: Handle multiple different I2C devices on same bus # -> we need to decode multiple protocols at the same time. -# -# Protocol output format: -# -# I2C packet: -# [, , ] -# -# is one of: -# - 'START' (START condition) -# - 'START REPEAT' (Repeated START) -# - 'ADDRESS READ' (Slave address, read) -# - 'ADDRESS WRITE' (Slave address, write) -# - 'DATA READ' (Data, read) -# - 'DATA WRITE' (Data, write) -# - 'STOP' (STOP condition) -# -# is the data or address byte associated with the 'ADDRESS*' and 'DATA*' -# command. For 'START', 'START REPEAT' and 'STOP', this is None. -# -# is either 'ACK' or 'NACK', but may also be None. -# +""" +I2C protocol output format: + +The protocol output consists of a (Python) list of I2C "packets", each of +which is of the form + + [ _i2c_command_, _data_, _ack_bit_ ] + +_i2c_command_ is one of: + - 'START' (START condition) + - 'START_REPEAT' (Repeated START) + - 'ADDRESS_READ' (Address, read) + - 'ADDRESS_WRITE' (Address, write) + - 'DATA_READ' (Data, read) + - 'DATA_WRITE' (Data, write) + - 'STOP' (STOP condition) + +_data_ is the data or address byte associated with the ADDRESS_* and DATA_* +command. For START, START_REPEAT and STOP, this is None. + +_ack_bit_ is either 'ACK' or 'NACK', but may also be None. +""" import sigrokdecode as srd