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Luke Tucker edited this page Jan 13, 2022
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TBW
There are two kinds of monitoring messages received from the device. There is a "CM2024 SUP" message every second which seems to be an overall status and is used to indicate that a battery is ready to charge (and possibly other things I am yet to figure out). The second type of message is a "CM2024 DAT" which returns the status of each slot independently.
First a message like this will arrive
43 4D 32 30 32 34 20 53 55 50 CM2024 SUP
Followed by another fixed length message like this:
02 00 7B 01 EE 02 0D 00 82 78 78 78 78 78 78 78
78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78
78 98 16 0D 0A
Then when a battery is inserted it will switch to something like:
01 00 7B 01 ED 02 09 00 13 00 01 01 00 02 00 00
00 3C 05 05 00 08 78 78 78 78 78 78 78 78 78 78
78 73 26 0D 0A
So far I have figured out the following:
| Offset | Description |
|---|---|
| 01 | Unknown |
| 02 | Unknown |
| 03 | Unknown |
| 04 | Unknown |
| 05 | Unknown |
| 06 | Unknown |
| 07 | Unknown |
| 08 - 09 | Sequence Counter going from 0x0000 to 0x0257 (0-599) in increments of 13 - Little Endian |
| 10 | Slot awaiting setup (see slot table) |
| 11 | Chemistry selected (See chemistry table) |
| 12 | Program selected (See program table) |
| 13 | Selected maximum charge current (applicable for NiHM/Cd only) (see charge current table) |
| 14 | Selected discharge rate (see discharge table) |
| 15 - 16 | Selected capacity in mAh in units of 1. Little Endian |
| 17 | SD card status (see table) |
| 18 | Cool time in minutes |
| 19 | Unknown |
| 20 | Unknown |
| 21 | Unknown |
| 22 | SD Slot status |
TBW
| Value | Description |
|---|---|
| 00 | Slot 1 |
| 01 | Slot 2 |
| 02 | Slot 3 |
| 03 | Slot 4 |
| 04 | Slot 5 |
| 05 | Slot 6 |
| 06 | Slot 7 |
| 07 | Slot 8 |
| 08 | Slot A |
| 09 | Slot B |
| Value | Description |
|---|---|
| 01 | NiHM/Cd |
| 02 | NiZn |
| Value | Description |
|---|---|
| 01 | Recharge |
| 02 | Discharge |
| 03 | Procharge |
| 04 | Cycle |
| 05 | Alive |
| 06 | Maximize |
| Value | Description |
|---|---|
| 00 | Not Applicable (NiZn) |
| 01 | 500mA |
| 02 | 1000mA |
| 03 | 1500mA |
| 04 | 2000mA |
| 05 | 2500mA |
| 06 | 3000mA |
The values are interpreted differently depending on the chemistry
| Value | Description |
|---|---|
| 01 | 150mA |
| 02 | 300mA |
| 03 | 450mA |
| 04 | 600mA |
| Value | Description |
|---|---|
| 01 | 125mA |
| 02 | 250mA |
| 03 | 375mA |
| 04 | 500mA |
| 05 | 625mA |
| 06 | 750mA |
| Value | Description |
|---|---|
| 00 | SD off |
| 01 | Unknown |
| 02 | On / Ready |
| Value | Description |
|---|---|
| 00 | NO CARD |
| 01 | Unknown |
| 02 | Unknown |
| 03 | Unknown |
| 04 | Unknown |
| 05 | Unknown |
| 06 | Unknown |
| 07 | Inserted |
| 08 | Ready |