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Command 1F Cancel Request

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Eelke Jager edited this page Jan 8, 2018 · 15 revisions

Command 1F is the "cancel" command. It has the following format:

  • byte 1F: mtype
  • byte 05: length
  • dword: nonce
  • byte with bits AAAA0BCD: Bits B, C, and D select the case (probably what gets canceled). Bits AAAA are a 4-bit value.

The Pod responds with a 1D status message.

An example from Temp Basal Packets: 1f05 d88df895 62

A cancel is also done as part of Deactivate POD, apparently canceling all three cases: 1f05 e1f78752 07

Suspend

1F is also used for "suspend". Currently omni_listen_rfcat is not outputting the suspend command from the PDM, just the response from the POD. Used rtlomni to capture the transaction though: 1f108958a11f10895800030e010000220e, which looks like another variation of the cancel command.

Resume:

2017-11-17T15:00:58.382990 ID1:1f068f54 PTYPE:PDM SEQ:28 ID2:1f068f54 B9:a0 BLEN:58 BODY:1a168fa118cf0001f21d01400000b806900af0095009300713 CRC:d3

Cancel Temp Basal

Another variation of the 1f command is the cancel temp basal command.

2017-10-04T14:37:13.979405 ID1:1f0b3555 PTYPE:PDM SEQ:23 ID2:1f0b3555 B9:08 BLEN:7 BODY:1f05156b93e8620028 CRC:35
2017-10-04T14:37:14.307150 ID1:1f0b3555 PTYPE:PDM SEQ:23 ID2:1f0b3555 B9:08 BLEN:7 BODY:1f05156b93e8620028 CRC:35
2017-10-04T14:37:14.377525 ID1:1f0b3555 PTYPE:POD SEQ:24 ID2:1f0b3555 B9:0c BLEN:10 BODY:1d1800251000000063ff82bb CRC:91
2017-10-04T14:37:14.378063 ID1:1f0b3555 PTYPE:ACK SEQ:25 ID2:1f0b3555 CRC:f0

Cancel Insulin Delivery

Yet, anothet 1f variation is to bolus certain amount and then cancel half way through. There is a lot of back and forth to probably determine how much insulin has actually been delivered from original command. The PDM reports the partially delivered amount.

2017-11-17T15:07:13.802278 ID1:1f068f54 PTYPE:PDM SEQ:17 ID2:1f068f54 B9:08 BLEN:7 BODY:1f053b9a70286401c0 CRC:2c
2017-11-17T15:07:14.092022 ID1:1f068f54 PTYPE:PDM SEQ:17 ID2:1f068f54 B9:08 BLEN:7 BODY:1f053b9a70286401c0 CRC:2c
2017-11-17T15:07:14.424933 ID1:1f068f54 PTYPE:PDM SEQ:17 ID2:1f068f54 B9:08 BLEN:7 BODY:1f053b9a70286401c0 CRC:2c
2017-11-17T15:07:14.495358 ID1:1f068f54 PTYPE:POD SEQ:18 ID2:1f068f54 B9:0c BLEN:10 BODY:1d1800d610010007dfff803b CRC:87
2017-11-17T15:07:14.719160 ID1:1f068f54 PTYPE:PDM SEQ:17 ID2:1f068f54 B9:08 BLEN:7 BODY:1f053b9a70286401c0 CRC:2c
2017-11-17T15:07:14.730161 ID1:1f068f54 PTYPE:POD SEQ:18 ID2:1f068f54 B9:0c BLEN:10 BODY:1d1800d610010007dfff803b CRC:87
2017-11-17T15:07:15.279427 ID1:1f068f54 PTYPE:PDM SEQ:17 ID2:1f068f54 B9:08 BLEN:7 BODY:1f053b9a70286401c0 CRC:2c
2017-11-17T15:07:15.351860 ID1:1f068f54 PTYPE:POD SEQ:18 ID2:1f068f54 B9:0c BLEN:10 BODY:1d1800d610010007dfff803b CRC:87
2017-11-17T15:07:15.590800 ID1:1f068f54 PTYPE:PDM SEQ:17 ID2:1f068f54 B9:08 BLEN:7 BODY:1f053b9a70286401c0 CRC:2c
2017-11-17T15:07:16.002427 ID1:1f068f54 PTYPE:POD SEQ:18 ID2:1f068f54 B9:0c BLEN:10 BODY:1d1800d610010007dfff803b CRC:87
2017-11-17T15:07:16.179439 ID1:1f068f54 PTYPE:PDM SEQ:17 ID2:1f068f54 B9:08 BLEN:7 BODY:1f053b9a70286401c0 CRC:2c
2017-11-17T15:07:16.252021 ID1:1f068f54 PTYPE:POD SEQ:18 ID2:1f068f54 B9:0c BLEN:10 BODY:1d1800d610010007dfff803b CRC:87
2017-11-17T15:07:16.485522 ID1:1f068f54 PTYPE:PDM SEQ:17 ID2:1f068f54 B9:08 BLEN:7 BODY:1f053b9a70286401c0 CRC:2c
2017-11-17T15:07:16.617023 ID1:1f068f54 PTYPE:POD SEQ:18 ID2:1f068f54 B9:0c BLEN:10 BODY:1d1800d610010007dfff803b CRC:87
2017-11-17T15:07:16.796780 ID1:1f068f54 PTYPE:PDM SEQ:17 ID2:1f068f54 B9:08 BLEN:7 BODY:1f053b9a70286401c0 CRC:2c
2017-11-17T15:07:16.867910 ID1:1f068f54 PTYPE:POD SEQ:18 ID2:1f068f54 B9:0c BLEN:10 BODY:1d1800d610010007dfff803b CRC:87
2017-11-17T15:07:17.104706 ID1:1f068f54 PTYPE:PDM SEQ:17 ID2:1f068f54 B9:08 BLEN:7 BODY:1f053b9a70286401c0 CRC:2c
2017-11-17T15:07:17.105212 ID1:1f068f54 PTYPE:POD SEQ:18 ID2:1f068f54 B9:0c BLEN:10 BODY:1d1800d610010007dfff803b CRC:87
2017-11-17T15:07:17.228830 ID1:1f068f54 PTYPE:POD SEQ:18 ID2:1f068f54 B9:0c BLEN:10 BODY:1d1800d610010007dfff803b CRC:87
2017-11-17T15:07:17.402683 ID1:1f068f54 PTYPE:PDM SEQ:17 ID2:1f068f54 B9:08 BLEN:7 BODY:1f053b9a70286401c0 CRC:2c
2017-11-17T15:07:17.477171 ID1:1f068f54 PTYPE:POD SEQ:18 ID2:1f068f54 B9:0c BLEN:10 BODY:1d1800d610010007dfff803b CRC:87
2017-11-17T15:07:17.702593 ID1:1f068f54 PTYPE:PDM SEQ:17 ID2:1f068f54 B9:08 BLEN:7 BODY:1f053b9a70286401c0 CRC:2c
2017-11-17T15:07:17.737905 ID1:1f068f54 PTYPE:POD SEQ:18 ID2:1f068f54 B9:0c BLEN:10 BODY:1d1800d610010007dfff803b CRC:87
2017-11-17T15:07:18.102254 ID1:1f068f54 PTYPE:POD SEQ:18 ID2:1f068f54 B9:0c BLEN:10 BODY:1d1800d610010007dfff803b CRC:87
2017-11-17T15:07:18.143485 ID1:1f068f54 PTYPE:ACK SEQ:19 ID2:1f068f54 CRC:33
2017-11-17T15:07:21.870518 ID1:1f068f54 PTYPE:PDM SEQ:20 ID2:1f068f54 B9:10 BLEN:3 BODY:0e01000110 CRC:f7
2017-11-17T15:07:22.162888 ID1:1f068f54 PTYPE:PDM SEQ:20 ID2:1f068f54 B9:10 BLEN:3 BODY:0e01000110 CRC:f7
2017-11-17T15:07:22.236193 ID1:1f068f54 PTYPE:POD SEQ:21 ID2:1f068f54 B9:14 BLEN:10 BODY:1d1800d610010007dfff02b5 CRC:d3
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