## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
-## along with this program; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+## along with this program; if not, see <http://www.gnu.org/licenses/>.
##
import sigrokdecode as srd
pass
class Decoder(srd.Decoder):
- api_version = 2
+ api_version = 3
id = 't55xx'
name = 'T55xx'
longname = 'RFID T55xx'
license = 'gplv2+'
inputs = ['logic']
outputs = ['t55xx']
+ tags = ['IC', 'RFID']
channels = (
{'id': 'data', 'name': 'Data', 'desc': 'Data line'},
)
('decode', 'Decode', (10,)),
)
- def __init__(self, **kwargs):
+ def __init__(self):
+ self.reset()
+
+ def reset(self):
self.samplerate = None
- self.oldpin = None
self.last_samplenum = None
self.lastlast_samplenum = None
self.state = 'START_GAP'
self.bits_pos[self.bit_nr][2] = bit_end
self.bit_nr += 1
- def decode(self, ss, es, data):
+ def decode(self):
if not self.samplerate:
raise SamplerateError('Cannot decode without samplerate.')
- for (self.samplenum, (pin,)) in data:
- # Ignore identical samples early on (for performance reasons).
- if self.oldpin == pin:
- continue
- if self.oldpin is None:
- self.oldpin = pin
- self.last_samplenum = self.samplenum
- self.lastlast_samplenum = self.samplenum
- self.last_edge = self.samplenum
- self.oldpl = 0
- self.oldpp = 0
- self.oldsamplenum = 0
- self.last_bit_pos = 0
+ self.last_samplenum = 0
+ self.lastlast_samplenum = 0
+ self.last_edge = 0
+ self.oldpl = 0
+ self.oldpp = 0
+ self.oldsamplenum = 0
+ self.last_bit_pos = 0
+ self.old_gap_start = 0
+ self.old_gap_end = 0
+ self.gap_detected = 0
+ self.bit_nr = 0
- self.old_gap_start = 0
- self.old_gap_end = 0
- self.gap_detected = 0
- self.bit_nr = 0
- continue
+ while True:
+ (pin,) = self.wait({0: 'e'})
- if self.oldpin != pin:
- pl = self.samplenum - self.oldsamplenum
- pp = pin
- samples = self.samplenum - self.last_samplenum
+ pl = self.samplenum - self.oldsamplenum
+ pp = pin
+ samples = self.samplenum - self.last_samplenum
- if self.state == 'WRITE_GAP':
- if pl > self.writegap:
- self.gap_detected = 1
- self.put(self.last_samplenum, self.samplenum,
- self.out_ann, [2, ['Write gap']])
- if (self.last_samplenum-self.old_gap_end) > self.nogap:
- self.gap_detected = 0
- self.state = 'START_GAP'
- self.put(self.old_gap_end, self.last_samplenum,
- self.out_ann, [3, ['Write mode exit']])
- self.put_fields()
+ if self.state == 'WRITE_GAP':
+ if pl > self.writegap:
+ self.gap_detected = 1
+ self.put(self.last_samplenum, self.samplenum,
+ self.out_ann, [2, ['Write gap']])
+ if (self.last_samplenum-self.old_gap_end) > self.nogap:
+ self.gap_detected = 0
+ self.state = 'START_GAP'
+ self.put(self.old_gap_end, self.last_samplenum,
+ self.out_ann, [3, ['Write mode exit']])
+ self.put_fields()
- if self.state == 'START_GAP':
- if pl > self.startgap:
- self.gap_detected = 1
- self.put(self.last_samplenum, self.samplenum,
- self.out_ann, [1, ['Start gap']])
- self.state = 'WRITE_GAP'
+ if self.state == 'START_GAP':
+ if pl > self.startgap:
+ self.gap_detected = 1
+ self.put(self.last_samplenum, self.samplenum,
+ self.out_ann, [1, ['Start gap']])
+ self.state = 'WRITE_GAP'
- if self.gap_detected == 1:
- self.gap_detected = 0
- if (self.last_samplenum - self.old_gap_end) > self.wzmin \
- and (self.last_samplenum - self.old_gap_end) < self.wzmax:
- self.put(self.old_gap_end, self.last_samplenum,
- self.out_ann, [0, ['0']])
- self.put(self.old_gap_end, self.last_samplenum,
- self.out_ann, [4, ['Bit']])
- self.add_bits_pos(0, self.old_gap_end,
- self.last_samplenum)
- if (self.last_samplenum - self.old_gap_end) > self.womin \
- and (self.last_samplenum - self.old_gap_end) < self.womax:
- self.put(self.old_gap_end, self.last_samplenum,
- self.out_ann, [0, ['1']])
- self.put(self.old_gap_end, self.last_samplenum,
- self.out_ann, [4, ['Bit']])
- self.add_bits_pos(1, self.old_gap_end, self.last_samplenum)
+ if self.gap_detected == 1:
+ self.gap_detected = 0
+ if (self.last_samplenum - self.old_gap_end) > self.wzmin \
+ and (self.last_samplenum - self.old_gap_end) < self.wzmax:
+ self.put(self.old_gap_end, self.last_samplenum,
+ self.out_ann, [0, ['0']])
+ self.put(self.old_gap_end, self.last_samplenum,
+ self.out_ann, [4, ['Bit']])
+ self.add_bits_pos(0, self.old_gap_end,
+ self.last_samplenum)
+ if (self.last_samplenum - self.old_gap_end) > self.womin \
+ and (self.last_samplenum - self.old_gap_end) < self.womax:
+ self.put(self.old_gap_end, self.last_samplenum,
+ self.out_ann, [0, ['1']])
+ self.put(self.old_gap_end, self.last_samplenum,
+ self.out_ann, [4, ['Bit']])
+ self.add_bits_pos(1, self.old_gap_end, self.last_samplenum)
- self.old_gap_start = self.last_samplenum
- self.old_gap_end = self.samplenum
+ self.old_gap_start = self.last_samplenum
+ self.old_gap_end = self.samplenum
- self.oldpl = pl
- self.oldpp = pp
- self.oldsamplenum = self.samplenum
- self.last_samplenum = self.samplenum
- self.oldpin = pin
+ self.oldpl = pl
+ self.oldpp = pp
+ self.oldsamplenum = self.samplenum
+ self.last_samplenum = self.samplenum
projects / libsigrokdecode.git / blobdiff