ts_31_102: Add support for EF.ECC (emergency call codes)
decoded output will look like this:
[
{
"call_code": "911",
"service_category": {
"police": false,
"ambulance": false,
"fire_brigade": false,
"marine_guard": false,
"mountain_rescue": false,
"manual_ecall": false,
"automatic_ecall": false
},
"alpha_id": "911"
},
{
"call_code": "112",
"service_category": {
"police": false,
"ambulance": false,
"fire_brigade": false,
"marine_guard": false,
"mountain_rescue": false,
"manual_ecall": false,
"automatic_ecall": false
},
"alpha_id": "112"
},
null,
null,
null
]
Change-Id: If8b4972af4f5be1707446d335cfc6e729c973abb
diff --git a/pySim/ts_31_102.py b/pySim/ts_31_102.py
index 647a4d7..c96bf09 100644
--- a/pySim/ts_31_102.py
+++ b/pySim/ts_31_102.py
@@ -558,9 +558,35 @@
# TS 31.103 Section 4.2.7 - *not* the same as DF.GSM/EF.ECC!
class EF_ECC(LinFixedEF):
+ cc_construct = Rpad(BcdAdapter(Rpad(Bytes(3))), pattern='f')
+ category_construct = FlagsEnum(Byte, police=1, ambulance=2, fire_brigade=3, marine_guard=4,
+ mountain_rescue=5, manual_ecall=6, automatic_ecall=7)
+ alpha_construct = GsmStringAdapter(Rpad(GreedyBytes))
def __init__(self, fid='6fb7', sfid=0x01, name='EF.ECC',
desc='Emergency Call Codes'):
super().__init__(fid, sfid=sfid, name=name, desc=desc, rec_len={4,20})
+ def _decode_record_bin(self, in_bin):
+ # mandatory parts
+ code = in_bin[:3]
+ if code == b'\xff\xff\xff':
+ return None
+ svc_category = in_bin[-1:]
+ ret = {'call_code': parse_construct(EF_ECC.cc_construct, code),
+ 'service_category': parse_construct(EF_ECC.category_construct, svc_category) }
+ # optional alpha identifier
+ if len(in_bin) > 4:
+ alpha_id = in_bin[3:-1]
+ ret['alpha_id'] = parse_construct(EF_ECC.alpha_construct, alpha_id)
+ return ret
+ def _encode_record_bin(self, in_json):
+ if in_json is None:
+ return b'\xff\xff\xff\xff'
+ code = EF_ECC.cc_construct.build(in_json['call_code'])
+ svc_category = EF_ECC.category_construct.build(in_json['category'])
+ alpha_id = EF_ECC.alpha_construct.build(in_json['alpha_id'])
+ # FIXME: alpha_id needs padding up to 'record_length - 4'
+ return code + alpha_id + svc_category
+
# TS 31.102 Section 4.2.17
class EF_LOCI(TransparentEF):