9BMetrics
Variables
As explained in the protocol section, the model that implements the Wheel is an array of up to 256 positions which we will call variables. Each one has 16 bit value with interpretation varying according to the meaning.
| From | To | Description | Type | Notes/Unpacking |
|---|---|---|---|---|
| 16 | 22 | Serial No | String | Every item has 2 bytes of the S/N . High order byte = first cha |
| 23 | 25 | PIN Code | ||
| 26 | 26 | Version | 3 numerics | High Order Byte = first version, high 4 bits of low order byte subversion low order 4 bits sub sub version |
| 27 | 27 | Error Code | ||
| 28 | 28 | Warning Code | ||
| 31 | 31 | Work Mode | ||
| 34 | 34 | Batery Level | numeric positive | Is in % |
| 37 | 37 | Remaining Milieage | numeric positive | Km * 100 |
| 38 | 38 | Current Speed | numeric positive | Km/h * 1000 |
| 41 | 42 | Total Mileage | numeric positive | v[42] * 65536 + v[41] in meters |
| 50 | 51 | Total Runtime | numeric positive | v[51] * 65536 + v[50] in seconds |
| 58 | 58 | Single Runtime | numeric positive | seconds |
| 62 | 62 | Temperature | numeric positive | ºC * 10 |
| 71 | 71 | Voltage | numeric positive | V * 100 |
| 74 | 74 | ? | ? | Working to know what is. For the moment no idea |
| 80 | 80 | Current | numeric with sign | if v[80] > 32768 I = v[80] - 65536 else I = v[80] in Amperes * 100 |
| 97 | 97 | Pitch Angle | numeric with sign | if v[97] > 32768 pitch = v[97] - 65536 else pithc = v[97] in º * 100 |
| 98 | 98 | Roll Angle | numeric with sign | if v[98] > 32768 roll = v[98] - 65536 else pitch = v[98] in º * 100 |
| 99 | 99 | Pitch Angle Velocity | numeric with sign | if v[99] > 32768 vpitch = v[99] - 65536 else vpithch = v[99] in º * 100 / s but need to confirm |
| 100 | 100 | Roll Angle Velocity | numeric with sign | if v[100] > 32768 roll = v[100] - 65536 else vpitch = v[100] in º * 100 / s but need to confirm |
| 115 | 115 | Probably general speed limit | numeric positive | m/h |
| 116 | 116 | Speed Limit (setteable) | numeric positive | m/h |
| 178 | 178 | Flags | bit 0 -> Limit Speed, bit 1 -> Lock , bit 2 -> Beep, bit 11 -> Activation. Bits from lower significance | |
| 182 | 182 | Average speed | numeric positive | m/h |
| 185 | 185 | Single Mileage | numeric positive | in meters |
| 210 | 210 | Ride Mode | numeric positive | |
| 211 | 211 | One Fun Bool | No Idea |
Some variables are repeated from position 176
| From | To | Description |
|---|---|---|
| 176 | 176 | Error Code |
| 177 | 177 | Warning Code |
| 179 | 179 | Work Mode |
| 180 | 180 | Battery Level |
| 181 | 181 | Current Speed |
| 183 | 184 | Total Mileage |
| 187 | 187 | Temperature |
| 188 | 188 | Voltage |
| 189 | 189 | Roll Angle |
| 190 | 190 | Pitch Angle |
| 191 | 191 | Max Speed |
| 218 | 223 | Activation Related |
Also 9BMetrics uses variable 0 to store the altitude variation from the iPhone altimeter if available.