3 * An AGL system installed with latest Chinook version \(>3.0.2\).
5 * Make sure you built the AGL generator else you will not be able to generate custom low-level CAN binding. Generator can be found [here](http://github.com/iotbzh/can-config-generator) with the attached instruction to install and run it.
7 It will produce a _configuration-generated.cpp_ file to paste in the source, _src/_, directory.
9 * Make sure you already set up the AGL SDK using the following [guide](http://docs.iot.bzh/docs/getting_started/en/dev/reference/setup-sdk-environment.html).
11 To get the correct SDK version installed, you **must** prepare your environment with the **chinook-next** version. To do so, run the following command in your docker image:
13 > **NOTE** This command assume that proprietary graphic drivers for Renesas Porter board are located in `/home/devel/share/proprietary-renesas-rcar` directory.
16 $ prepare_meta -f chinook-next -o /xdt -l /home/devel/mirror -p /home/devel/share/proprietary-renesas-rcar/ -t porter -e wipeconfig -e rm_work
19 * Check that you updated git submodules, executing the following commands from this repository:
22 $ git clone https://github.com/iotbzh/CAN_signaling
25 $ git submodule update
28 * An [USB CAN adapter](http://shop.8devices.com/usb2can) connected to connector through the [right cable](http://www.mouser.fr/ProductDetail/EasySync/OBD-M-DB9-F-ES/)).
32 ## Use of CAN config generator
34 ### Build requirements
36 * CMake version 3.0 or later
37 * G++, Clang++ or any C++11 complient compiler.
43 You can install any of these using your package manager. For instance, inside the iotbzh's docker image, you must enter this command :
47 $ sudo apt-get install libboost-system-dev libboost-filesystem-dev libboost-program-options-dev
50 You may want to install `libboost-all-dev` to get all boost components even if it's not required.
54 > **CAUTION** It is **very important** that you do not source the SDK environment file to compile this project because some build requirements aren't installed in the AGL SDK for now.
57 $ export PATH=$PATH:/xdt/sdk/sysroots/x86_64-aglsdk-linux/usr/bin
58 $ git clone https://github.com/iotbzh/can-config-generator.git
59 $ cd can-config-generator
62 $ cmake -G "Unix Makefiles" ..
68 We chose a doted naming convention because it's a well know schema.
70 It separates and organize names into hierarchy. From the left to right, you describe your names using the more common ancestor at the left then more you go to the right the more it will be accurate.
72 Let's take an example, here is an example about standard PID name following this convention:
76 engine.coolant.temperature
78 intake.manifold.pressure
81 intake.air.temperature
88 commanded.throttle.position
89 ethanol.fuel.percentage
90 accelerator.pedal.position
91 hybrid.battery-pack.remaining.life
92 engine.oil.temperature
96 > **NOTE** It's recommended that you follow this naming convention to named your CAN signals.
98 > There is only character `*` that is forbidden in names because it's used as wildcard for subscription and unsubscrition.
100 > This described in the below chapter.
102 ### Generating JSON from Vector CANoe Database
104 > **CAUTION** This chapter has not been tested since we haven't necessary automotive tools for that.
106 If you use Canoe to store your `gold standard` CAN signal definitions, you may be able to use the OpenXC `xml_to_json.py` script to make your JSON for you. First, export the Canoe .dbc file as XML - you can do this with Vector CANdb++. Next, create a JSON file according to the format defined above, but only define:
109 - Name of CAN signals within messages and their generic_name.
110 - Optionnaly name of diagnostic messages and their name.
112 To install the OpenXC utilities and runs `xml_to_json.py` script:
115 $ sudo pip install openxc
116 $ cd /usr/local/lib/python2.7/dist-packages/openxc/generator
119 Assuming the data exported from Vector is in `signals.xml` and your minimal mapping file is `mapping.json`, run the script:
122 $ python -m openxc.utils ./xml_to_json.py signals.xml mapping.json signals.json
125 The script scans `mapping.json` to identify the CAN messages and signals that you want to use from the XML file. It pulls the neccessary details of the messages (bit position, bit size, offset, etc) and outputs the resulting subset as JSON into the output file, `signals.json`.
127 The resulting file together with `mapping.json` will work as input to the code generation script.
129 ### Generate your config file
131 To generate your config file you just have to run the generator using the `-m` option to specify your JSON file.
134 $ ./can-config-generator -m ../tests/basic.json -o configuration-generated.cpp
137 If you omit the `-o` option, then code is generated on the stdout.
138 You also can specify a header and a footer file.
139 These files must be valid C++ fragment as long as they will be inserted as is.
140 Use the `-h` option to display help.
142 > **CAUTION:** Each `diagnostic_message` must define the same `bus` as the binding will use only one bus.
144 ### Supported OpenXC items
146 About now, compliance with OpenXC reference is in progress, can-config-generator and CAN\_signaling will implement them soon.
147 `initializers`, `loopers`, `commands` and `handlers` nodes are ignored for now.
149 This generator will follow OpenXC support status of the low level CAN signaling binding.
151 > **NOTE**: The `buses` item will not be supported by this generator because the binding use another way to declare and configure buses. Please refer to the binding's documentation.
153 ## Compile and install the binding
155 With an AGL SDK environment correctly configured and **sourced**, I suggest you to set the TARGET variable in the root CMakeLists.txt file if you have an AGL target already running in your network.
157 Then you can directly build and install the binding and source directory on your target system.
159 Execute these commands to get your binding compile :
168 And if you have set TARGET variable, you can install it on your AGL system :
172 [ 16%] Built target bitfield
173 [ 27%] Built target isotp
174 [ 40%] Built target openxc
175 [ 48%] Built target uds
176 [ 97%] Built target low-can-binding
177 [100%] Built target widget
178 Install the project...
179 -- Install configuration: ""
181 { "added": "low-can-binding@0.1" }
184 It's possible that you'll see the following message :
187 Error org.freedesktop.DBus.Error.Failed: "system error"
190 It's because installation remove the binding before installing it.
192 If it is the first time that you make the installation then you'll have this message in place of _**true**_.
194 To install it manually, you need to copy the _low-can-binding.wgt_ file on your target, then from it execute the following commands :
196 On your host, to copy over the network :
199 $ scp low-can-binding.wgt root@<target_IP>:~
202 On the target, assuming _**wgt**_ file is in the root home directory :
205 ~# afm-util install low-can-binding.wgt
206 { "added": "low-can-binding@0.1" }