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* Ford: log interesting module configuration data
Ford ECUs have what is called "As-Built Data" which is configured at the
factory/workshop to set what packages/features are enabled on the car.
But they also contain vehicle specific information (VIN, make, model,
weight, wheel base...), DTC information and driver preferences.
I dumped the CAN traffic for the FORScan diagnostic tool to see how it
requests this information from the ECUs.
<details>
<summary>FORScan communication with IPMA (camera)</summary>
<pre>
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': '0200'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'TESTER_PRESENT', 'hex': '00'}
{'addr': 1806, 'type': 'positive_response', 'service': 'TESTER_PRESENT', 'hex': '00'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f190'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de00'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de00020799dbaa10296516a440000000000000000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f113'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'data': b'\xf1\x13JX7T-19H406-CH\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00', 'hex': 'f1134a5837542d3139483430362d434800000000000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f188'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'data': b'\xf1\x88JX7T-14F397-AH\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00', 'hex': 'f1884a5837542d3134463339372d414800000000000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f120'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'data': b'\xf1 JX7T-14F397-BF\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00', 'hex': 'f1204a5837542d3134463339372d424600000000000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f121'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f124'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'data': b'\xf1$JX7T-14F398-AG\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00', 'hex': 'f1244a5837542d3134463339382d414700000000000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f125'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'data': b'\xf1%JX7T-14F398-BF\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00', 'hex': 'f1254a5837542d3134463339382d424600000000000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f126'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f10a'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f111'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'data': b'\xf1\x11JX7T-14F403-CA\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00', 'hex': 'f1114a5837542d3134463430332d434100000000000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f18c'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'data': b'\xf1\x8c182762191\x00\x00\x00\x00\x00\x00\x00', 'hex': 'f18c31383237363231393100000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f162'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f110'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'data': b'\xf1\x10DS-JX7T-19H406-AD\x00\x00\x00\x00\x00\x00\x00', 'hex': 'f11044532d4a5837542d3139483430362d414400000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': '0202'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'd100'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'd10001'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'd700'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'd70001010101'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'd701'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'd70101020000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'dd01'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'dd010102f8'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'f113'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'data': b'\xf1\x13JX7T-19H406-CH\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00', 'hex': 'f1134a5837542d3139483430362d434800000000000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'fd08'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'fd0800000500500100300000000000000000000000300000000000000000200100400300100200001200f00300500000000000000300c00b00400200000000000000000000000000000000200f01201e01501400a00200200400700d02501d01700700e06405005e05503401100a000000002002002001000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'fd09'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'fd09ffec0001fef60002'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de00'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de00020799dbaa10296516a440000000000000000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DTC_INFORMATION', 'hex': '028f'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DTC_INFORMATION', 'hex': '02ff50019768c253002cc401862cc418862c'}
... skip DTC requests ...
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de00'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de00020799dbaa10296516a440000000000000000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de01'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de01fd5616db5fffff557fe1f842080000000800000008000000080000000819bfe00f7c00000000000000000000000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de02'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de02800000008000000080000000800000008337fc00800000008000000080000000800000008337fc0000000000000000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de03'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de03fffc26c3800000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de04'}
{'addr': 1806, 'type': 'positive_response', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de04546a8c0000000000'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de05'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de06'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de07'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de08'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de09'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de0a'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de0b'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de0c'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de0d'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
{'addr': 1798, 'type': 'request', 'service': 'READ_DATA_BY_IDENTIFIER', 'hex': 'de0e'}
{'addr': 1806, 'type': 'negative_response', 'hex': '2231'}
</pre>
</details>
Using UDS service `READ_DATA_BY_IDENTIFIER`, we can read the As-Built
blocks from `0xDExx` with no diagnostic session/security access necessary.
I used [Online As-Built databases](https://cyanlabs.net/asbuilt-db/) and
various coding spreadsheets shared online to find values we might be
interested in using for fingerprinting (both vehicle parameters and
identifying the platform).
ABS:
- Payload tier (Base, Mid Payload Upgrade, Heavy Duty Payload
Upgrade...)
- Wheelbase
- Steering ratio
- Cruise Control Mode (Normal, Adaptive)
- Enable Stop and Go
PSCM:
- Enable Lane Keeping Aid
- Enable Traffic Jam Assist
- Enable Lane Centering Assist
IPMA (Q4):
- Steering ratio
- Wheelbase
APIM (Sync 3 and Sync 4):
- Steering ratio
- Vehicle weight
- Wheelbase
There are more potentially useful signals which I haven't included
although they might not be necessary:
- Vehicle (Ford platform code, like "C344" or "C519" - although the
source of the mapping from index to code is FORScan and not Ford
themselves unless we can find a better source).
- Fuel type
- Vehicle length/height/front track/rear track
- Tire circumference (could be useful for converting wheel speed rad/s
to m/s)
- Steering angle source (Pinion, Wheel)
- Country code (letters, e.g. US, CA or UK)
- Transmission type
- CAN network architecture
- More feature flags (the APIM also stores settings for ACC, LCA, BLIS)
The full list of settings I have found is
[here](https://github.com/incognitojam/op-notebooks/blob/main/ford/settings.py).
* FwQueryConfig: add data_requests
* add car_data to CarInterface get_params
* Revert "add car_data to CarInterface get_params"
This reverts commit aa161a6b82082705db97bea2c4317e1888a74845.
* test_ford: add APIM ecu address
* Revert "FwQueryConfig: add data_requests"
This reverts commit dc5484a9b80be5bc61a7fdf55560b8813bc43ef7.
* fix block numbers and add extra queries
* bump test_fw_query_timing
* add missing query whitelists
* simplify asbuilt requests
* use forscan block ids
* formatting
---------
Co-authored-by: Shane Smiskol <shane@smiskol.com>
old-commit-hash: c724d1c86ce4044bfc03f1e7941871466f51a708
Car port structure
interface.py
Generic interface to send and receive messages from CAN (controlsd uses this to communicate with car)
fingerprints.py
Fingerprints for matching to a specific car
carcontroller.py
Builds CAN messages to send to car
carstate.py
Reads CAN from car and builds openpilot CarState message
values.py
Limits for actuation, general constants for cars, and supported car documentation
radar_interface.py
Interface for parsing radar points from the car