## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
##
-# I2C protocol decoder
-
# TODO: Look into arbitration, collision detection, clock synchronisation, etc.
# TODO: Implement support for 10bit slave addresses.
# TODO: Implement support for inverting SDA/SCL levels (0->1 and 1->0).
import sigrokdecode as srd
'''
-Protocol output format:
+OUTPUT_PYTHON format:
-I2C packet:
+I²C packet:
[<cmd>, <data>]
<cmd> is one of:
class Decoder(srd.Decoder):
api_version = 1
id = 'i2c'
- name = 'I2C'
+ name = 'I²C'
longname = 'Inter-Integrated Circuit'
desc = 'Two-wire, multi-master, serial bus.'
license = 'gplv2+'
'address_format': ['Displayed slave address format', 'shifted'],
}
annotations = [
- ['Start', 'Start condition'],
- ['Repeat start', 'Repeat start condition'],
- ['Stop', 'Stop condition'],
- ['ACK', 'ACK'],
- ['NACK', 'NACK'],
- ['Address read', 'Address read'],
- ['Address write', 'Address write'],
- ['Data read', 'Data read'],
- ['Data write', 'Data write'],
- ['Warnings', 'Human-readable warnings'],
+ ['start', 'Start condition'],
+ ['repeat-start', 'Repeat start condition'],
+ ['stop', 'Stop condition'],
+ ['ack', 'ACK'],
+ ['nack', 'NACK'],
+ ['address-read', 'Address read'],
+ ['address-write', 'Address write'],
+ ['data-read', 'Data read'],
+ ['data-write', 'Data write'],
+ ['warnings', 'Human-readable warnings'],
]
binary = (
- 'Address read',
- 'Address write',
- 'Data read',
- 'Data write',
+ ('address-read', 'Address read'),
+ ('address-write', 'Address write'),
+ ('data-read', 'Data read'),
+ ('data-write', 'Data write'),
)
def __init__(self, **kwargs):
self.samplerate = value
def start(self):
- self.out_proto = self.register(srd.OUTPUT_PYTHON)
+ self.out_python = self.register(srd.OUTPUT_PYTHON)
self.out_ann = self.register(srd.OUTPUT_ANN)
- self.out_binary = self.add(srd.OUTPUT_BINARY)
+ self.out_binary = self.register(srd.OUTPUT_BINARY)
self.out_bitrate = self.register(srd.OUTPUT_META,
meta=(int, 'Bitrate', 'Bitrate from Start bit to Stop bit'))
self.put(self.startsample, self.samplenum, self.out_ann, data)
def putp(self, data):
- self.put(self.startsample, self.samplenum, self.out_proto, data)
+ self.put(self.startsample, self.samplenum, self.out_python, data)
def putb(self, data):
self.put(self.startsample, self.samplenum, self.out_binary, data)