ETEKCITY ESN00 Packets
Parses & serializes packets to and from the format that ESN00 sends and understands.
Implemented Packet Types:
- [x]
SET_UNIT(0xc0) - c5736b4, - #2 - [x]
SET_TARE(0xc1) - #2 - [x]
SET_AUTO_OFF(0xc4) - 805a076, #2 - [x]
MEASUREMENT(0xd0) - bfcf5df - [x]
UNIT_STATE(0xd1) - #5 - [x]
TARE_STATE(0xd3) - bfcf5df, #3 - [x]
AUTO_OFF_STATE(0xd5) - #2 - [x]
ERROR_STATE(0xe0) - bfcf5df, #3 - [x]
ITEM_STATE(0xe4) - bfcf5df, #3
Unresearched packets
-
SET_NUTRITION(0xc2) -
?PING(0xc3) -
???(0xd2) -
?PONG(0xd4) -
???(0xe1) -
???(0xe2) -
???(0xe3)
Protocol
All packets have this structure
Data Packet: Weight Measurement (0xE0)
Device will be constantly spamming packet with this data
| Field | Description | Note |
|---|---|---|
| Sign |
0x00 (positive) / 0x01 (negative) |
|
| Weight | 16 bit int (big-endian) | In grams value is multiplied by 10 (not sure about other units) |
| Unit |
0x00(g),0x02(ml),0x04(ml milk),0x03(floz),0x05(floz milk),0x06(oz),0x01(lboz) |
Does not seem like bitmask just enum |
| Stable |
0x00 (measuring) / 0x01 (settled) |
0x00 means weight is not yet settled |
Packet Details
| Status | Type | Source(s) | Payload | Generic? | Notes |
|---|---|---|---|---|---|
SET_UNIT |
COMMAND |
unit |
uint8Parselizer |
||
SET_TARE |
COMMAND |
shouldReset |
booleanParselizer |
||
SET_AUTO_OFF |
COMMAND |
timeout |
uint8Parselizer |
||
MEASUREMENT |
NOTIFY |
sign, value, unit
|
uint8Parselizer |
||
TARE_STATE |
NOTIFY |
isOn |
booleanParselizer (inverted) |
||
AUTO_OFF_STATE |
NOTIFY |
timeout |
uint16Parselizer |
the value is the same as for command with the exception of extra 0 byte | |
ERROR_STATE |
NOTIFY |
isOn |
booleanParselizer (inverted) |
||
ITEM_STATE |
NOTIFY |
isOn |
booleanParselizer (inverted) |
||
UNIT_STATE |
NOTIFY |
unit |
uint8Parselizer |
||
SET_NUTRITION |
COMMAND |
(complex object) | need more samples to understad how data is encoded |
Legend
| Marker | Category | Description |
|---|---|---|
| Status | Waiting (todo) | |
| Status | Blocked | |
| Status | Done | |
COMMAND |
Source(s) | Command send to the Device |
NOTIFY |
Source(s) | Notification received from the Device |