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bolus.py
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from base import KnownRecord, VariableHead
from decocare import lib
# from .. import lib
from times import extra_year_bits
from pprint import pformat
class Bolus(KnownRecord):
"""
>>> rec = Bolus(Bolus._test_1[:4])
>>> decoded = rec.parse(Bolus._test_1)
>>> print str(rec)
Bolus 2012-12-18T15:05:28 head[4], body[0] op[0x01]
>>> print pformat(decoded)
{'amount': 5.6, 'duration': 0, 'programmed': 5.6, 'type': 'normal'}
"""
_test_1 = bytearray([ 0x01, 0x38, 0x38, 0x00,
0xdc, 0x05, 0x4f, 0x12, 0x0c, ])
opcode = 0x01
head_length = 4
def __init__(self, head, larger=False):
super(Bolus, self).__init__(head, larger)
# self.larger = larger
if self.larger:
self.head_length = 8
def decode(self):
self.parse_time( )
dose = {
'amount': self.head[2]/10.0,
'programmed': self.head[1]/10.0,
'duration': self.head[3] * 30,
'type': self.head[3] > 0 and 'square' or 'normal'
}
if self.larger:
duration = self.head[7] * 30
dose = { 'amount': lib.BangInt(self.head[3:5])/40.0,
'programmed': lib.BangInt(self.head[1:3])/40.0,
'unabsorbed': lib.BangInt(self.head[5:7])/40.0,
'duration': duration,
'type': duration > 0 and 'square' or 'normal',
}
return dose
class BolusWizard(KnownRecord):
"""
Decode/parse bolus wizard records.
>>> from decocare import models
>>> rec = BolusWizard(BolusWizard._test_1[:2], model=models.PumpModel('522', None))
>>> decoded = rec.parse(BolusWizard._test_1)
>>> print str(rec)
BolusWizard 2013-01-20T13:07:45 head[2], body[13] op[0x5b]
>>> print pformat(decoded)
{'_byte[5]': 0,
'_byte[7]': 0,
'bg': 108,
'bg_target_high': 125,
'bg_target_low': 106,
'bolus_estimate': 1.1,
'carb_input': 15,
'carb_ratio': 13,
'correction_estimate': 0.0,
'food_estimate': 1.1,
'sensitivity': 45,
'unabsorbed_insulin_count': '??',
'unabsorbed_insulin_total': 4.8,
'unknown_byte[10]': 0,
'unknown_byte[8]': 0}
"""
# missing unabsorbed_insulin_count = 4
_test_1 = bytearray([ 0x5b, 0x6c,
0x2d, 0x47, 0x0d, 0x14, 0x0d,
0x0f, 0x50, 0x0d, 0x2d, 0x6a, 0x00, 0x0b, 0x00,
0x00, 0x30, 0x00, 0x0b, 0x7d, ])
_test_2 = bytearray([ 0x5b, 0x8b,
0xdc, 0x05, 0x0f, 0x12, 0x0c,
0x45, 0x50, 0x0d, 0x2d, 0x6a, 0x03, 0x35, 0x00,
0x00, 0x00, 0x00, 0x38, 0x7d, ])
opcode = 0x5b
body_length = 13
def __init__(self, head, model=None):
super(BolusWizard, self).__init__(head, model)
# self.larger = larger
self.MMOL_DEFAULT = model.MMOL_DEFAULT
if self.larger:
self.body_length = 15
def decode(self):
self.parse_time( )
bg = lib.BangInt([ self.body[1] & 0x0f, self.head[1] ])
carb_input = int(self.body[0])
# XXX: I have no idea if this is correct; it seems to produce correct results.
correction = ( twos_comp( self.body[7], 8 )
+ twos_comp( self.body[5] & 0x0f, 8 ) ) / 10.0
wizard = { 'bg': bg, 'carb_input': carb_input,
'carb_ratio': int(self.body[2]),
'sensitivity': int(self.body[3]),
'bg_target_low': int(self.body[4]),
'bg_target_high': int(self.body[12]),
'bolus_estimate': int(self.body[11])/10.0,
'food_estimate': int(self.body[6])/10.0,
'unabsorbed_insulin_total': int(self.body[9])/10.0,
'unabsorbed_insulin_count': '??',
'correction_estimate': correction,
'_byte[5]': self.body[5],
'_byte[7]': int(self.body[7]), #
'unknown_byte[8]': self.body[8],
'unknown_byte[10]': self.body[10],
# '??': '??',
# 'unabsorbed_insulin_total': int(self.body[9])/10.0,
# 'food_estimate': int(self.body[0]),
}
if self.larger:
# correction = ( twos_comp( self.body[6], (self.body[9] & 0x38) << 5 ) ) / 40.0
bg = ((self.body[1] & 0x03) << 8) + self.head[1]
carb_input = ((self.body[1] & 0x0c) << 6) + self.body[0]
carb_ratio = (((self.body[2] & 0x07) << 8) + self.body[3]) / 10.0
# xxx: not sure about this
# https://github.com/ps2/minimed_rf/blob/master/lib/minimed_rf/log_entries/bolus_wizard.rb#L102
sensitivity = int(self.body[4])
wizard = { 'bg': bg, 'carb_input': carb_input,
'carb_ratio': carb_ratio,
'sensitivity': sensitivity,
'bg_target_low': int(self.body[5]),
'bg_target_high': int(self.body[14]),
# 'bolus_estimate': int(self.body[13])/40.0,
'correction_estimate': (((self.body[9] & 0x38) << 5) + self.body[6]) / 40.0,
# 'correction_maybe_estimate': correction,
'food_estimate': insulin_decode(self.body[7], self.body[8]),
'unabsorbed_insulin_total': insulin_decode(self.body[10], self.body[11]),
'bolus_estimate': insulin_decode(self.body[12], self.body[13]),
# 'unknown_bytes': map(int, list(self.body)),
}
if self.MMOL_DEFAULT:
for key in [ 'bg', 'bg_target_high', 'bg_target_low', 'sensitivity' ]:
wizard[key] = wizard[key] / 10.0
return wizard
def insulin_decode (a, b, strokes=40.0):
return ((a << 8) + b) / strokes
def twos_comp(val, bits):
# http://stackoverflow.com/a/9147327
"""compute the 2's compliment of int value val"""
if( (val&(1<<(bits-1))) != 0 ):
val = val - (1<<bits)
return val
"""
moved to models
def decode_unabsorbed(amount, age, curve,strokes=40.0):
unabsorbed = { 'amount': amount/strokes,
'age': age,
'curve': curve, }
return unabsorbed
"""
class UnabsorbedInsulinBolus(VariableHead):
"""
This data is not made available at the time of therapy in the pump
UI, but could easily change my dosing decision.
>>> from decocare import models
>>> model = models.PumpModel('522', None)
>>> rec = UnabsorbedInsulinBolus( UnabsorbedInsulinBolus._test_1[:2], model)
>>> print str(rec)
UnabsorbedInsulinBolus unknown head[2], body[0] op[0x5c]
>>> print pformat(rec.parse( UnabsorbedInsulinBolus._test_1 ))
[{'age': 78, 'amount': 1.25}, {'age': 88, 'amount': 0.95}]
>>> rec = UnabsorbedInsulinBolus( UnabsorbedInsulinBolus._test_2[:2], model )
>>> print str(rec)
UnabsorbedInsulinBolus unknown head[2], body[0] op[0x5c]
>>> print pformat(rec.parse( UnabsorbedInsulinBolus._test_2 ))
[{'age': 60, 'amount': 2.6}, {'age': 160, 'amount': 2.5}]
[{'age': 60, 'amount': 2.6, 'curve': 4},
{'age': 160, 'amount': 2.5, 'curve': 4}]
"""
_test_1 = bytearray([ 0x5c, 0x08,
0x32, 0x4e, 0x04, 0x26, 0x58, 0x04, ])
_test_2 = bytearray([ 0x5c, 0x08,
0x68, 0x3c, 0x04,
0x64, 0xa0, 0x04, ])
opcode = 0x5c
date_length = 0
def decode(self):
raw = self.head[2:]
return self.model.decode_unabsorbed(raw)
class CalBGForPH(KnownRecord):
"""
>>> rec = CalBGForPH( CalBGForPH._test_1[:2] )
>>> rec.parse( CalBGForPH._test_1 )
{'amount': 139}
>>> print str(rec)
CalBGForPH 2012-12-18T15:04:46 head[2], body[0] op[0x0a]
"""
_test_1 = bytearray([ 0x0a, 0x8b,
0xee, 0x04, 0x2f, 0x12, 0x0c, ])
_test_2 = bytearray([ 0x0a, 0xa7,
0x22, 0x53, 0x30, 0x0e, 0x0d, ])
_test_3 = bytearray([ 0x0a, 0xb0,
0x00, 0x6f, 0x2f, 0x0e, 0x0d, ])
_test_4 = bytearray([ 0x0a, 0x42,
0x0c, 0x6c, 0x31, 0x0e, 0x8d, ])
_test_5 = bytearray([ 0x0a, 0x60,
0x04, 0x59, 0x2b, 0x0e, 0x8d, ])
_test_6 = bytearray([ 0x0a, 0x5b,
0x16, 0x52, 0x2a, 0x0e, 0x8d, ])
opcode = 0x0a
def decode(self):
self.parse_time( )
year_bits = extra_year_bits(self.date[4])
return { 'amount': int(lib.BangInt([ year_bits[0], self.head[1] ])) }
pass
if __name__ == '__main__':
import doctest
doctest.testmod( )