# Possible other events:
# - Error event in case protocol looks broken:
# [{'type': 'ERROR', 'range': (min, max),
-# 'data': TODO, 'ann': 'This is not a Microchip 24XX64 EEPROM'},
+# 'data': TODO, 'ann': 'This is not a Microchip 24XX64 EEPROM'},
# [{'type': 'ERROR', 'range': (min, max),
-# 'data': TODO, 'ann': 'TODO'},
+# 'data': TODO, 'ann': 'TODO'},
# - TODO: Make list of possible errors accessible as metadata?
#
# TODO: I2C address of slaves.
#
def decode(l):
- print(l)
- sigrok.put(l)
-
-
+ print(l)
+ sigrok.put(l)
def decode2(inbuf):
- """I2C protocol decoder"""
+ """I2C protocol decoder"""
- # FIXME: Get the data in the correct format in the first place.
- inbuf = [ord(x) for x in inbuf]
+ # FIXME: Get the data in the correct format in the first place.
+ inbuf = [ord(x) for x in inbuf]
- # FIXME: This should be passed in as metadata, not hardcoded here.
- metadata = {
- 'numchannels': 8,
- 'signals': {
- 'scl': {'ch': 5, 'name': 'SCL', 'desc': 'Serial clock line'},
- 'sda': {'ch': 7, 'name': 'SDA', 'desc': 'Serial data line'},
- },
- }
+ # FIXME: This should be passed in as metadata, not hardcoded here.
+ metadata = {
+ 'numchannels': 8,
+ 'signals': {
+ 'scl': {'ch': 5, 'name': 'SCL', 'desc': 'Serial clock line'},
+ 'sda': {'ch': 7, 'name': 'SDA', 'desc': 'Serial data line'},
+ },
+ }
- out = []
- o = ack = d = ''
- bitcount = data = 0
- wr = startsample = -1
- IDLE, START, ADDRESS, DATA = range(4)
- state = IDLE
+ out = []
+ o = ack = d = ''
+ bitcount = data = 0
+ wr = startsample = -1
+ IDLE, START, ADDRESS, DATA = range(4)
+ state = IDLE
- # Get the channel/probe number of the SCL/SDA signals.
- scl_bit = metadata['signals']['scl']['ch']
- sda_bit = metadata['signals']['sda']['ch']
+ # Get the channel/probe number of the SCL/SDA signals.
+ scl_bit = metadata['signals']['scl']['ch']
+ sda_bit = metadata['signals']['sda']['ch']
- # Get SCL/SDA bit values (0/1 for low/high) of the first sample.
- s = inbuf[0]
- oldscl = (s & (1 << scl_bit)) >> scl_bit
- oldsda = (s & (1 << sda_bit)) >> sda_bit
+ # Get SCL/SDA bit values (0/1 for low/high) of the first sample.
+ s = inbuf[0]
+ oldscl = (s & (1 << scl_bit)) >> scl_bit
+ oldsda = (s & (1 << sda_bit)) >> sda_bit
- # Loop over all samples.
- # TODO: Handle LAs with more/less than 8 channels.
- for samplenum, s in enumerate(inbuf[1:]): # We skip the first byte...
- # Get SCL/SDA bit values (0/1 for low/high).
- scl = (s & (1 << scl_bit)) >> scl_bit
- sda = (s & (1 << sda_bit)) >> sda_bit
+ # Loop over all samples.
+ # TODO: Handle LAs with more/less than 8 channels.
+ for samplenum, s in enumerate(inbuf[1:]): # We skip the first byte...
+ # Get SCL/SDA bit values (0/1 for low/high).
+ scl = (s & (1 << scl_bit)) >> scl_bit
+ sda = (s & (1 << sda_bit)) >> sda_bit
- # TODO: Wait until the bus is idle (SDA = SCL = 1) first?
+ # TODO: Wait until the bus is idle (SDA = SCL = 1) first?
- # START condition (S): SDA = falling, SCL = high
- if (oldsda == 1 and sda == 0) and scl == 1:
- o = {'type': 'S', 'range': (samplenum, samplenum),
- 'data': None, 'ann': None},
- out.append(o)
- state = ADDRESS
- bitcount = data = 0
+ # START condition (S): SDA = falling, SCL = high
+ if (oldsda == 1 and sda == 0) and scl == 1:
+ o = {'type': 'S', 'range': (samplenum, samplenum),
+ 'data': None, 'ann': None},
+ out.append(o)
+ state = ADDRESS
+ bitcount = data = 0
- # Data latching by transmitter: SCL = low
- elif (scl == 0):
- pass # TODO
+ # Data latching by transmitter: SCL = low
+ elif (scl == 0):
+ pass # TODO
- # Data sampling of receiver: SCL = rising
- elif (oldscl == 0 and scl == 1):
- if startsample == -1:
- startsample = samplenum
- bitcount += 1
+ # Data sampling of receiver: SCL = rising
+ elif (oldscl == 0 and scl == 1):
+ if startsample == -1:
+ startsample = samplenum
+ bitcount += 1
- # out.append("%d\t\tRECEIVED BIT %d: %d\n" % \
- # (samplenum, 8 - bitcount, sda))
+ # out.append("%d\t\tRECEIVED BIT %d: %d\n" % \
+ # (samplenum, 8 - bitcount, sda))
- # Address and data are transmitted MSB-first.
- data <<= 1
- data |= sda
+ # Address and data are transmitted MSB-first.
+ data <<= 1
+ data |= sda
- if bitcount != 9:
- continue
+ if bitcount != 9:
+ continue
- # We received 8 address/data bits and the ACK/NACK bit.
- data >>= 1 # Shift out unwanted ACK/NACK bit here.
- ack = (sda == 1) and 'N' or 'A'
- d = (state == ADDRESS) and (data & 0xfe) or data
- if state == ADDRESS:
- wr = (data & 1) and 1 or 0
- state = DATA
- o = {'type': state,
- 'range': (startsample, samplenum - 1),
- 'data': d, 'ann': None}
- if state == ADDRESS and wr == 1:
- o['type'] = 'AW'
- elif state == ADDRESS and wr == 0:
- o['type'] = 'AR'
- elif state == DATA and wr == 1:
- o['type'] = 'DW'
- elif state == DATA and wr == 0:
- o['type'] = 'DR'
- out.append(o)
- o = {'type': ack, 'range': (samplenum, samplenum),
- 'data': None, 'ann': None}
- out.append(o)
- bitcount = data = startsample = 0
- startsample = -1
+ # We received 8 address/data bits and the ACK/NACK bit.
+ data >>= 1 # Shift out unwanted ACK/NACK bit here.
+ ack = (sda == 1) and 'N' or 'A'
+ d = (state == ADDRESS) and (data & 0xfe) or data
+ if state == ADDRESS:
+ wr = (data & 1) and 1 or 0
+ state = DATA
+ o = {'type': state,
+ 'range': (startsample, samplenum - 1),
+ 'data': d, 'ann': None}
+ if state == ADDRESS and wr == 1:
+ o['type'] = 'AW'
+ elif state == ADDRESS and wr == 0:
+ o['type'] = 'AR'
+ elif state == DATA and wr == 1:
+ o['type'] = 'DW'
+ elif state == DATA and wr == 0:
+ o['type'] = 'DR'
+ out.append(o)
+ o = {'type': ack, 'range': (samplenum, samplenum),
+ 'data': None, 'ann': None}
+ out.append(o)
+ bitcount = data = startsample = 0
+ startsample = -1
- # STOP condition (P): SDA = rising, SCL = high
- elif (oldsda == 0 and sda == 1) and scl == 1:
- o = {'type': 'P', 'range': (samplenum, samplenum),
- 'data': None, 'ann': None},
- out.append(o)
- state = IDLE
- wr = -1
+ # STOP condition (P): SDA = rising, SCL = high
+ elif (oldsda == 0 and sda == 1) and scl == 1:
+ o = {'type': 'P', 'range': (samplenum, samplenum),
+ 'data': None, 'ann': None},
+ out.append(o)
+ state = IDLE
+ wr = -1
- # Save current SDA/SCL values for the next round.
- oldscl = scl
- oldsda = sda
+ # Save current SDA/SCL values for the next round.
+ oldscl = scl
+ oldsda = sda
- # FIXME: Just for testing...
- return str(out)
+ # FIXME: Just for testing...
+ return str(out)
register = {
- 'id': 'i2c',
- 'name': 'I2C',
- 'longname': 'Inter-Integrated Circuit (I2C) bus',
- 'desc': 'I2C is a two-wire, multi-master, serial bus.',
- 'longdesc': '...',
- 'author': 'Uwe Hermann',
- 'email': 'uwe@hermann-uwe.de',
- 'license': 'gplv2+',
- 'in': ['logic'],
- 'out': ['i2c'],
- 'probes': [
- ['scl', 'Serial clock line'],
- ['sda', 'Serial data line'],
- ],
- 'options': {
- 'address-space': ['Address space (in bits)', 7],
- },
- # 'start': start,
- # 'report': report,
+ 'id': 'i2c',
+ 'name': 'I2C',
+ 'longname': 'Inter-Integrated Circuit (I2C) bus',
+ 'desc': 'I2C is a two-wire, multi-master, serial bus.',
+ 'longdesc': '...',
+ 'author': 'Uwe Hermann',
+ 'email': 'uwe@hermann-uwe.de',
+ 'license': 'gplv2+',
+ 'in': ['logic'],
+ 'out': ['i2c'],
+ 'probes': [
+ ['scl', 'Serial clock line'],
+ ['sda', 'Serial data line'],
+ ],
+ 'options': {
+ 'address-space': ['Address space (in bits)', 7],
+ },
+ # 'start': start,
+ # 'report': report,
}
# Use psyco (if available) as it results in huge performance improvements.
try:
- import psyco
- psyco.bind(decode)
+ import psyco
+ psyco.bind(decode)
except ImportError:
- pass
+ pass
# FIXME: This is just some example input for testing purposes...
example_packets = [
- # START condition.
- {'type': 'S', 'range': (10, 11), 'data': None, 'ann': ''},
-
- # Nunchuk init: Write 0x40,0x00 to slave address 0x54.
- {'type': 'AW', 'range': (12, 13), 'data': 0x54, 'ann': ''},
- {'type': 'DW', 'range': (14, 15), 'data': 0x40, 'ann': ''},
- {'type': 'AW', 'range': (16, 17), 'data': 0x54, 'ann': ''},
- {'type': 'DW', 'range': (18, 19), 'data': 0x00, 'ann': ''},
-
- # Get data: Read 6 bytes of data.
- {'type': 'DR', 'range': (20, 21), 'data': 0x11, 'ann': ''},
- {'type': 'DR', 'range': (22, 23), 'data': 0x22, 'ann': ''},
- {'type': 'DR', 'range': (24, 25), 'data': 0x33, 'ann': ''},
- {'type': 'DR', 'range': (26, 27), 'data': 0x44, 'ann': ''},
- {'type': 'DR', 'range': (28, 29), 'data': 0x55, 'ann': ''},
- {'type': 'DR', 'range': (30, 31), 'data': 0x66, 'ann': ''},
-
- # STOP condition.
- {'type': 'P', 'range': (32, 33), 'data': None, 'ann': ''},
+ # START condition.
+ {'type': 'S', 'range': (10, 11), 'data': None, 'ann': ''},
+
+ # Nunchuk init: Write 0x40,0x00 to slave address 0x54.
+ {'type': 'AW', 'range': (12, 13), 'data': 0x54, 'ann': ''},
+ {'type': 'DW', 'range': (14, 15), 'data': 0x40, 'ann': ''},
+ {'type': 'AW', 'range': (16, 17), 'data': 0x54, 'ann': ''},
+ {'type': 'DW', 'range': (18, 19), 'data': 0x00, 'ann': ''},
+
+ # Get data: Read 6 bytes of data.
+ {'type': 'DR', 'range': (20, 21), 'data': 0x11, 'ann': ''},
+ {'type': 'DR', 'range': (22, 23), 'data': 0x22, 'ann': ''},
+ {'type': 'DR', 'range': (24, 25), 'data': 0x33, 'ann': ''},
+ {'type': 'DR', 'range': (26, 27), 'data': 0x44, 'ann': ''},
+ {'type': 'DR', 'range': (28, 29), 'data': 0x55, 'ann': ''},
+ {'type': 'DR', 'range': (30, 31), 'data': 0x66, 'ann': ''},
+
+ # STOP condition.
+ {'type': 'P', 'range': (32, 33), 'data': None, 'ann': ''},
]
def decode(l):
- print(l)
- sigrok.put(l)
+ print(l)
+ sigrok.put(l)
def decode2(inbuf):
- """Nintendo Wii Nunchuk decoder"""
-
- # FIXME: Get the data in the correct format in the first place.
- inbuf = [ord(x) for x in inbuf]
- out = []
- o = {}
-
- # TODO: Pass in metadata.
-
- # States
- IDLE, START, NUNCHUK_SLAVE, INIT, INITIALIZED = range(5)
- state = IDLE # TODO: Can we assume a certain initial state?
-
- sx = sy = ax = ay = az = bz = bc = 0
-
- databytecount = 0
-
- # Loop over all I2C packets.
- for p in example_packets:
- if p['type'] == 'S': # TODO: Handle 'Sr' here, too?
- state = START
-
- elif p['type'] == 'Sr':
- pass # FIXME
-
- elif p['type'] == 'AR':
- # TODO: Error/Warning, not supported, I think.
- pass
-
- elif p['type'] == 'AW':
- # The Wii Nunchuk always has slave address 0x54.
- # TODO: Handle this stuff more correctly.
- if p['data'] == 0x54:
- pass # TODO
- else:
- pass # TODO: What to do here? Ignore? Error?
-
- elif p['type'] == 'DR' and state == INITIALIZED:
- if databytecount == 0:
- sx = p['data']
- elif databytecount == 1:
- sy = p['data']
- elif databytecount == 2:
- ax = p['data'] << 2
- elif databytecount == 3:
- ay = p['data'] << 2
- elif databytecount == 4:
- az = p['data'] << 2
- elif databytecount == 5:
- bz = (p['data'] & (1 << 0)) >> 0
- bc = (p['data'] & (1 << 1)) >> 1
- ax |= (p['data'] & (3 << 2)) >> 2
- ay |= (p['data'] & (3 << 4)) >> 4
- az |= (p['data'] & (3 << 6)) >> 6
- # del o
- o = {'type': 'D', 'range': (0, 0), 'data': []}
- o['data'] = [sx, sy, ax, ay, az, bz, bc]
- # sx = sy = ax = ay = az = bz = bc = 0
- else:
- pass # TODO
-
- if 0 <= databytecount <= 5:
- databytecount += 1
-
- # TODO: If 6 bytes read -> save and reset
-
- # TODO
- elif p['type'] == 'DR' and state != INITIALIZED:
- pass
-
- elif p['type'] == 'DW':
- if p['data'] == 0x40 and state == START:
- state = INIT
- elif p['data'] == 0x00 and state == INIT:
- o = {'type': 'I', 'range': (0, 0), 'data': []}
- o['data'] = [0x40, 0x00]
- out.append(o)
- state = INITIALIZED
- else:
- pass # TODO
-
- elif p['type'] == 'P':
- out.append(o)
- state = INITIALIZED
- databytecount = 0
-
- print out
-
- # FIXME
- return ''
+ """Nintendo Wii Nunchuk decoder"""
+
+ # FIXME: Get the data in the correct format in the first place.
+ inbuf = [ord(x) for x in inbuf]
+ out = []
+ o = {}
+
+ # TODO: Pass in metadata.
+
+ # States
+ IDLE, START, NUNCHUK_SLAVE, INIT, INITIALIZED = range(5)
+ state = IDLE # TODO: Can we assume a certain initial state?
+
+ sx = sy = ax = ay = az = bz = bc = 0
+
+ databytecount = 0
+
+ # Loop over all I2C packets.
+ for p in example_packets:
+ if p['type'] == 'S': # TODO: Handle 'Sr' here, too?
+ state = START
+
+ elif p['type'] == 'Sr':
+ pass # FIXME
+
+ elif p['type'] == 'AR':
+ # TODO: Error/Warning, not supported, I think.
+ pass
+
+ elif p['type'] == 'AW':
+ # The Wii Nunchuk always has slave address 0x54.
+ # TODO: Handle this stuff more correctly.
+ if p['data'] == 0x54:
+ pass # TODO
+ else:
+ pass # TODO: What to do here? Ignore? Error?
+
+ elif p['type'] == 'DR' and state == INITIALIZED:
+ if databytecount == 0:
+ sx = p['data']
+ elif databytecount == 1:
+ sy = p['data']
+ elif databytecount == 2:
+ ax = p['data'] << 2
+ elif databytecount == 3:
+ ay = p['data'] << 2
+ elif databytecount == 4:
+ az = p['data'] << 2
+ elif databytecount == 5:
+ bz = (p['data'] & (1 << 0)) >> 0
+ bc = (p['data'] & (1 << 1)) >> 1
+ ax |= (p['data'] & (3 << 2)) >> 2
+ ay |= (p['data'] & (3 << 4)) >> 4
+ az |= (p['data'] & (3 << 6)) >> 6
+ # del o
+ o = {'type': 'D', 'range': (0, 0), 'data': []}
+ o['data'] = [sx, sy, ax, ay, az, bz, bc]
+ # sx = sy = ax = ay = az = bz = bc = 0
+ else:
+ pass # TODO
+
+ if 0 <= databytecount <= 5:
+ databytecount += 1
+
+ # TODO: If 6 bytes read -> save and reset
+
+ # TODO
+ elif p['type'] == 'DR' and state != INITIALIZED:
+ pass
+
+ elif p['type'] == 'DW':
+ if p['data'] == 0x40 and state == START:
+ state = INIT
+ elif p['data'] == 0x00 and state == INIT:
+ o = {'type': 'I', 'range': (0, 0), 'data': []}
+ o['data'] = [0x40, 0x00]
+ out.append(o)
+ state = INITIALIZED
+ else:
+ pass # TODO
+
+ elif p['type'] == 'P':
+ out.append(o)
+ state = INITIALIZED
+ databytecount = 0
+
+ print out
+
+ # FIXME
+ return ''
register = {
- 'id': 'nunchuk',
- 'name': 'Nunchuk',
- 'longname': 'Nintendo Wii Nunchuk decoder',
- 'desc': 'Decodes the Nintendo Wii Nunchuk I2C-based protocol.',
- 'longdesc': '...',
- 'author': 'Uwe Hermann',
- 'email': 'uwe@hermann-uwe.de',
- 'license': 'gplv2+',
- 'in': ['i2c'],
- 'out': ['nunchuck'],
- 'probes': [
- # TODO
- ],
- 'options': {
- # TODO
- },
- # 'start': start,
- # 'report': report,
+ 'id': 'nunchuk',
+ 'name': 'Nunchuk',
+ 'longname': 'Nintendo Wii Nunchuk decoder',
+ 'desc': 'Decodes the Nintendo Wii Nunchuk I2C-based protocol.',
+ 'longdesc': '...',
+ 'author': 'Uwe Hermann',
+ 'email': 'uwe@hermann-uwe.de',
+ 'license': 'gplv2+',
+ 'in': ['i2c'],
+ 'out': ['nunchuck'],
+ 'probes': [
+ # TODO
+ ],
+ 'options': {
+ # TODO
+ },
+ # 'start': start,
+ # 'report': report,
}
# Use psyco (if available) as it results in huge performance improvements.
try:
- import psyco
- psyco.bind(decode)
+ import psyco
+ psyco.bind(decode)
except ImportError:
- pass
+ pass
## along with this program; if not, write to the Free Software
## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
##
+
class Sample():
def __init__(self, data):
self.data = data
if sck == self.oldsck:
continue
self.oldsck = sck
- if not sck:
- continue
+ if not sck:
+ continue
# If this is first bit, save timestamp
if self.rxcount == 0:
self.rxcount = 0
# Keep stats for summary
self.bytesreceived += 1
-
+
if __name__ == "__main__":
data = open("spi_dump.bin").read()
#Tested with:
# sigrok-cli -d 0:samplerate=1000000:rle=on --time=1s -p 1,2 -a spidec
-
## along with this program; if not, write to the Free Software
## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
##
+
import sigrok
lastsample = None
rising = None
falling = None
-
def decode(sampledata):
- """Counts the low->high and high->low transitions in the specified
- channel(s) of the signal."""
- global lastsample
- global oldbit, transitions, rising, falling
+ """Counts the low->high and high->low transitions in the specified
+ channel(s) of the signal."""
+ global lastsample
+ global oldbit, transitions, rising, falling
+
+ # TODO: Don't hardcode the number of channels.
+ channels = 8
+
+ # FIXME: Get the data in the correct format in the first place.
+ inbuf = [ord(x) for x in sampledata['data']]
- # TODO: Don't hardcode the number of channels.
- channels = 8
+ if lastsample == None:
+ oldbit = [0] * channels
+ transitions = [0] * channels
+ rising = [0] * channels
+ falling = [0] * channels
- # FIXME: Get the data in the correct format in the first place.
- inbuf = [ord(x) for x in sampledata['data']]
+ # Initial values.
+ lastsample = inbuf[0]
+ for i in range(channels):
+ oldbit[i] = (lastsample & (1 << i)) >> i
- if lastsample == None:
- oldbit = [0] * channels
- transitions = [0] * channels
- rising = [0] * channels
- falling = [0] * channels
+ # TODO: Handle LAs with more/less than 8 channels.
+ for s in inbuf:
+ # Optimization: Skip identical bytes (no transitions).
+ if lastsample != s:
+ for i in range(channels):
+ curbit = (s & (1 << i)) >> i
+ # Optimization: Skip identical bits (no transitions).
+ if oldbit[i] == curbit:
+ continue
+ elif (oldbit[i] == 0 and curbit == 1):
+ rising[i] += 1
+ elif (oldbit[i] == 1 and curbit == 0):
+ falling[i] += 1
+ oldbit[i] = curbit
- # Initial values.
- lastsample = inbuf[0]
- for i in range(channels):
- oldbit[i] = (lastsample & (1 << i)) >> i
-
- # TODO: Handle LAs with more/less than 8 channels.
- for s in inbuf:
- # Optimization: Skip identical bytes (no transitions).
- if lastsample != s:
- for i in range(channels):
- curbit = (s & (1 << i)) >> i
- # Optimization: Skip identical bits (no transitions).
- if oldbit[i] == curbit:
- continue
- elif (oldbit[i] == 0 and curbit == 1):
- rising[i] += 1
- elif (oldbit[i] == 1 and curbit == 0):
- falling[i] += 1
- oldbit[i] = curbit
+ # Total number of transitions is the sum of rising and falling edges.
+ for i in range(channels):
+ transitions[i] = rising[i] + falling[i]
- # Total number of transitions is the sum of rising and falling edges.
- for i in range(channels):
- transitions[i] = rising[i] + falling[i]
-
- lastsample = s
- print(transitions)
+ lastsample = s
+ print(transitions)
- sigrok.put(sampledata)
+ sigrok.put(sampledata)
register = {
- 'id': 'transitioncounter',
- 'name': 'Transition counter',
- 'longname': '...',
- 'desc': 'Counts rising/falling edges in the signal.',
- 'longdesc': '...',
- 'author': 'Uwe Hermann',
- 'email': 'uwe@hermann-uwe.de',
- 'license': 'gplv2+',
- 'in': ['logic'],
- 'out': ['transitioncounts'],
- 'probes': [
- # All probes.
- ],
- 'options': {
- # No options so far.
- },
- # 'start': start,
- # 'report': report,
+ 'id': 'transitioncounter',
+ 'name': 'Transition counter',
+ 'longname': '...',
+ 'desc': 'Counts rising/falling edges in the signal.',
+ 'longdesc': '...',
+ 'author': 'Uwe Hermann',
+ 'email': 'uwe@hermann-uwe.de',
+ 'license': 'gplv2+',
+ 'in': ['logic'],
+ 'out': ['transitioncounts'],
+ 'probes': [
+ # All probes.
+ ],
+ 'options': {
+ # No options so far.
+ },
+ # 'start': start,
+ # 'report': report,
}
# Use psyco (if available) as it results in huge performance improvements.
try:
- import psyco
- psyco.bind(decode)
+ import psyco
+ psyco.bind(decode)
except ImportError:
- pass
+ pass
projects / libsigrokdecode.git / commitdiff