inputs = ['logic']
outputs = ['onewire_link']
probes = [
- {'id': 'owr', 'name': 'OWR', 'desc': '1-Wire bus'},
+ {'id': 'owr', 'name': 'OWR', 'desc': '1-Wire signal line'},
]
optional_probes = [
- {'id': 'pwr', 'name': 'PWR', 'desc': '1-Wire power'},
+ {'id': 'pwr', 'name': 'PWR', 'desc': '1-Wire power supply pin'},
]
options = {
'overdrive': ['Overdrive', 1],
'cnt_overdrive_reset': ['Overdrive mode reset time', 0],
}
annotations = [
- ['Link', 'Link layer events (reset, presence, bit slots)'],
+ ['Text', 'Human-readable text'],
+ ['Warnings', 'Human-readable warnings'],
]
def __init__(self, **kwargs):
self.samplenum = 0
- # Link layer variables
self.state = 'WAIT FOR FALLING EDGE'
self.present = 0
self.bit = 0
self.bit_cnt = 0
self.command = 0
self.overdrive = 0
- # Event timing variables
self.fall = 0
self.rise = 0
# Check if samplerate is appropriate.
if self.options['overdrive']:
- self.put(0, 0, self.out_ann, [0,
- ['NOTE: Sample rate checks assume overdrive mode.']])
if self.samplerate < 2000000:
- self.put(0, 0, self.out_ann, [0,
+ self.put(0, 0, self.out_ann, [1,
['ERROR: Sampling rate is too low. Must be above 2MHz ' +
'for proper overdrive mode decoding.']])
elif self.samplerate < 5000000:
- self.put(0, 0, self.out_ann, [0,
+ self.put(0, 0, self.out_ann, [1,
['WARNING: Sampling rate is suggested to be above 5MHz ' +
'for proper overdrive mode decoding.']])
else:
- self.put(0, 0, self.out_ann, [0,
- ['NOTE: Sample rate checks assume normal mode only.']])
if self.samplerate < 400000:
- self.put(0, 0, self.out_ann, [0,
+ self.put(0, 0, self.out_ann, [1,
['ERROR: Sampling rate is too low. Must be above ' +
'400kHz for proper normal mode decoding.']])
elif (self.samplerate < 1000000):
- self.put(0, 0, self.out_ann, [0,
+ self.put(0, 0, self.out_ann, [1,
['WARNING: Sampling rate is suggested to be above ' +
'1MHz for proper normal mode decoding.']])
time_min = float(self.cnt_normal_bit) / self.samplerate
time_max = float(self.cnt_normal_bit + 1) / self.samplerate
if (time_min < 0.000005) or (time_max > 0.000015):
- self.put(0, 0, self.out_ann, [0,
+ self.put(0, 0, self.out_ann, [1,
['WARNING: The normal mode data sample time interval ' +
'(%2.1fus-%2.1fus) should be inside (5.0us, 15.0us).'
% (time_min * 1000000, time_max * 1000000)]])
time_min = float(self.cnt_normal_presence) / self.samplerate
time_max = float(self.cnt_normal_presence + 1) / self.samplerate
if (time_min < 0.0000681) or (time_max > 0.000075):
- self.put(0, 0, self.out_ann, [0,
+ self.put(0, 0, self.out_ann, [1,
['WARNING: The normal mode presence sample time interval ' +
'(%2.1fus-%2.1fus) should be inside (68.1us, 75.0us).'
% (time_min * 1000000, time_max * 1000000)]])
time_min = float(self.cnt_overdrive_bit) / self.samplerate
time_max = float(self.cnt_overdrive_bit + 1) / self.samplerate
if (time_min < 0.000001) or (time_max > 0.000002):
- self.put(0, 0, self.out_ann, [0,
+ self.put(0, 0, self.out_ann, [1,
['WARNING: The overdrive mode data sample time interval ' +
'(%2.1fus-%2.1fus) should be inside (1.0us, 2.0us).'
% (time_min * 1000000, time_max * 1000000)]])
time_min = float(self.cnt_overdrive_presence) / self.samplerate
time_max = float(self.cnt_overdrive_presence + 1) / self.samplerate
if (time_min < 0.0000073) or (time_max > 0.000010):
- self.put(0, 0, self.out_ann, [0,
+ self.put(0, 0, self.out_ann, [1,
['WARNING: The overdrive mode presence sample time interval ' +
'(%2.1fus-%2.1fus) should be inside (7.3us, 10.0us).'
% (time_min*1000000, time_max*1000000)]])
continue
self.put(self.fall, self.samplenum, self.out_ann,
- [0, ['BIT: %01x' % self.bit]])
+ [0, ['Bit: %d' % self.bit]])
self.put(self.fall, self.samplenum, self.out_proto,
['BIT', self.bit])
self.command |= (self.bit << self.bit_cnt)
elif self.bit_cnt == 8 and self.command in [0x3c, 0x69]:
self.put(self.fall, self.cnt_bit[self.overdrive],
- self.out_ann, [0, ['ENTER OVERDRIVE MODE']])
+ self.out_ann, [0, ['Entering overdrive mode']])
# Increment the bit counter.
self.bit_cnt += 1
# Wait for next slot.
# Exit overdrive mode.
if self.overdrive:
self.put(self.fall, self.cnt_bit[self.overdrive],
- self.out_ann, [0, ['EXIT OVERDRIVE MODE']])
+ self.out_ann, [0, ['Exiting overdrive mode']])
self.overdrive = 0
# Clear command bit counter and data register.
self.bit_cnt = 0
continue
self.put(self.fall, self.samplenum, self.out_ann,
- [0, ['RESET/PRESENCE: %s'
- % ('False' if self.present else 'True')]])
+ [0, ['Reset/presence: %s'
+ % ('false' if self.present else 'true')]])
self.put(self.fall, self.samplenum, self.out_proto,
['RESET/PRESENCE', not self.present])
# Wait for next slot.
optional_probes = []
options = {}
annotations = [
- ['Network', 'Network layer events (device addressing)'],
+ ['Text', 'Human-readable text'],
]
def __init__(self, **kwargs):
- # Event timing variables
self.beg = 0
self.end = 0
- # Network layer variables
self.state = 'COMMAND'
self.bit_cnt = 0
self.search = 'P'
self.search = 'P'
self.bit_cnt = 0
self.put(ss, es, self.out_ann,
- [0, ['RESET/PRESENCE: %s' % ('True' if val else 'False')]])
+ [0, ['Reset/presence: %s' % ('true' if val else 'false')]])
self.put(ss, es, self.out_proto, ['RESET/PRESENCE', val])
self.state = 'COMMAND'
return
if self.onewire_collect(8, val, ss, es) == 0:
return
if self.data in command:
- self.putx([0, ['ROM COMMAND: 0x%02x \'%s\''
+ self.putx([0, ['ROM command: 0x%02x \'%s\''
% (self.data, command[self.data][0])]])
self.state = command[self.data][1]
else:
- self.putx([0, ['ROM COMMAND: 0x%02x \'%s\''
- % (self.data, 'UNRECOGNIZED')]])
+ self.putx([0, ['ROM command: 0x%02x \'%s\''
+ % (self.data, 'unrecognized')]])
self.state = 'COMMAND ERROR'
elif self.state == 'GET ROM':
# A 64 bit device address is selected.
- # Family code (1B) + serial number (6B) + CRC (1B)
+ # Family code (1 byte) + serial number (6 bytes) + CRC (1 byte)
if self.onewire_collect(64, val, ss, es) == 0:
return
self.rom = self.data & 0xffffffffffffffff
self.state = 'TRANSPORT'
elif self.state == 'SEARCH ROM':
# A 64 bit device address is searched for.
- # Family code (1B) + serial number (6B) + CRC (1B)
+ # Family code (1 byte) + serial number (6 bytes) + CRC (1 byte)
if self.onewire_search(64, val, ss, es) == 0:
return
self.rom = self.data & 0xffffffffffffffff
# The transport layer is handled in byte sized units.
if self.onewire_collect(8, val, ss, es) == 0:
return
- self.putx([0, ['DATA: 0x%02x' % self.data]])
+ self.putx([0, ['Data: 0x%02x' % self.data]])
self.puty(['DATA', self.data])
elif self.state == 'COMMAND ERROR':
# Since the command is not recognized, print raw data.
if self.onewire_collect(8, val, ss, es) == 0:
return
- self.putx([0, ['ROM ERROR DATA: 0x%02x' % self.data]])
+ self.putx([0, ['ROM error data: 0x%02x' % self.data]])
else:
raise Exception('Invalid state: %s' % self.state)