diff options
| -rw-r--r-- | decoders/i2c/__init__.py | 22 | ||||
| -rw-r--r-- | decoders/i2c/pd.py | 23 |
2 files changed, 23 insertions, 22 deletions
diff --git a/decoders/i2c/__init__.py b/decoders/i2c/__init__.py index 2442ee1..57309e3 100644 --- a/decoders/i2c/__init__.py +++ b/decoders/i2c/__init__.py @@ -23,28 +23,6 @@ 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). - -Protocol output format: - -I2C packet: -[<cmd>, <data>] - -<cmd> is one of: - - 'START' (START condition) - - 'START REPEAT' (Repeated START condition) - - 'ADDRESS READ' (Slave address, read) - - 'ADDRESS WRITE' (Slave address, write) - - 'DATA READ' (Data, read) - - 'DATA WRITE' (Data, write) - - 'STOP' (STOP condition) - - 'ACK' (ACK bit) - - 'NACK' (NACK bit) - -<data> is the data or address byte associated with the 'ADDRESS*' and 'DATA*' -command. Slave addresses do not include bit 0 (the READ/WRITE indication bit). -For example, a slave address field could be 0x51 (instead of 0xa2). -For 'START', 'START REPEAT', 'STOP', 'ACK', and 'NACK' <data> is None. - ''' from .pd import * diff --git a/decoders/i2c/pd.py b/decoders/i2c/pd.py index 2500ae4..6beb251 100644 --- a/decoders/i2c/pd.py +++ b/decoders/i2c/pd.py @@ -32,6 +32,29 @@ import sigrokdecode as srd +''' +Protocol output format: + +I2C packet: +[<cmd>, <data>] + +<cmd> is one of: + - 'START' (START condition) + - 'START REPEAT' (Repeated START condition) + - 'ADDRESS READ' (Slave address, read) + - 'ADDRESS WRITE' (Slave address, write) + - 'DATA READ' (Data, read) + - 'DATA WRITE' (Data, write) + - 'STOP' (STOP condition) + - 'ACK' (ACK bit) + - 'NACK' (NACK bit) + +<data> is the data or address byte associated with the 'ADDRESS*' and 'DATA*' +command. Slave addresses do not include bit 0 (the READ/WRITE indication bit). +For example, a slave address field could be 0x51 (instead of 0xa2). +For 'START', 'START REPEAT', 'STOP', 'ACK', and 'NACK' <data> is None. +''' + # CMD: [annotation-type-index, long annotation, short annotation] proto = { 'START': [0, 'Start', 'S'], |