rusefi
/
RaceChronoDiyBleDevice
mirror of https://github.com/rusefi/RaceChronoDiyBleDevice.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Use bitsToUIntLe for RPM data channel

This commit is contained in:
Timur Iskhodzhanov 2021-06-13 23:42:57 -07:00
parent fcb1966b8f
commit 0d4d29ea77
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
can_db/ft86.md
View File

@ -14,7 +14,7 @@ Accelerator position (%) | 320 | `A/2.55` |
Brake position (%) | 209 | `min(C / 0.7, 100)` | The 0.7 divider seems to be a good value to get 100% at pressure slightly higher than those you're likely to use on the track for cars with no aero. You can use 0.8 or 0.9 if you see 100% too often.
Steering angle | 208 | `bytesToIntLe(raw, 0, 2) * 0.1` | Positive value = turning right. You can add a `-` if you prefer it the other way around.
Speed | 209 | `bytesToIntLe(raw, 0, 2) * 0.015694` | May want to check the multiplier against an external GPS aevice
Engine RPM | 320 | `C + (D & 0x3f) * 256` |
Engine RPM | 320 | `bitsToUIntLe(raw, 16, 14)` |
Coolant temperature | 864 | `D - 40` |
Engine oil temperature | 864 | `C - 40` |
@ -143,7 +143,7 @@ Accelerator position | `A / 2.55`
Clutch position | `(B & 0x80) / 1.28` | On/off only
??? | B & 0x70 | Unused?
??? | B & 0x0f | 0–15 counter?
Engine RPM | `C + (D & 0x3f) * 256`
Engine RPM | `bitsToUIntLe(raw, 16, 14)`
??? | `D & 0x80` | Always 0?
??? | `D & 0x40` | 1 when accelerator pedal is released, 0 otherwise
Accelerator position | `E / 2.55` | Not clear what's the difference from the other two
@ -159,7 +159,7 @@ Channel name | Equation | Notes
------------ | -------- | -----
Accelerator pedal position? | `bytesToIntLe(raw, 0, 2)` | Follows `A` from `0x140` closely with ~9860 for 0% and ~11625 for 42%. Needs more testing.
Engine load? | `bytesToIntLe(raw, 2, 2)` | Follows the data from OBD PIDs 0x4 and 0x43 pretty well.
Engine RPM | `E + (F & 0x3f) * 256`
Engine RPM | `bitsToUIntLe(raw, 32, 14)`
??? | `F & 0x80` | 1 when accelerator pedal is released, 0 otherwise
??? | `F & 0x40` | Always 0?
Gear | `(G & 0xf) * (1 - (min(G & 0xf, 7)) / 7)` | It's basically just `G & 0xf` but neutral is reported as `7`, hence the complex math to turn it into a 0. The reverse gear is reported as `1`. The value can be wrong when the clutch pedal is depressed.