-# Install AFB Websocket CLI client to test the binding.
+# Configure the AGL system
-You can test it using afb-client-demo CLI tool provided by the RPM package _libafbwsc-dev_.
+## Virtual CAN device
-You can find this package in your build environment, using docker SDK recommended setup the file is `/xdt/build/tmp/deploy/rpm/<your-target-arch>/`.
-
-After a successful bitbake build and using Renesas RCar Gen2, Porter, you have to copy the file if your board is connected to your network and you know its IP address:
-
-```bash
-$ scp /xdt/build/tmp/deploy/rpm/cortex15hf_neon/libafbwsc-dev-1.0-r0.cortexa15hf_neon.rpm root@<target_IP>:~
-```
-
-Else, you have to copy into the SDcard with the AGL image installed on it.
-
-From the docker image copy RPM to the shared directory between docker image and your host:
-
-```bash
-$ cp /xdt/build/tmp/deploy/rpm/cortex15hf_neon/libafbwsc-dev-1.0-r0.cortexa15hf_neon.rpm ~/share
-```
-
-Then plugin you SDcard in your Linux host \(Windows can't read ext4 filesystem AGL runs on\) and copy RPM file on it.
-
-From your host, identify SDcard block device node here it is **sdc** with the correct capacity automounted by the desktop manager:
-
-```bash
-$ lsblk
-loop1 7:1 0 2G 0 loop
-└─docker-253:0-3146365-pool 253:3 0 100G 0 dm
- └─docker-253:0-3146365-e9f80849a2681e18549d3a4238cbf031e44052e36cd88a0abf041804b799b61c
- 253:4 0 10G 0 dm /var/lib/docker/devicemapper/mnt/e9f80849a2681e18549d3a4238cbf031e44052e36cd88a0abf041804b799b61c
-sdb 8:16 0 238.5G 0 disk
-├─sdb2 8:18 0 238G 0 part
-│ └─Shamash-agl 253:1 0 238G 0 lvm /home/claneys/Workspace/agl-docker
-└─sdb1 8:17 0 500M 0 part /boot
-sr0 11:0 1 1024M 0 rom
-loop0 7:0 0 100G 0 loop
-└─docker-253:0-3146365-pool 253:3 0 100G 0 dm
- └─docker-253:0-3146365-e9f80849a2681e18549d3a4238cbf031e44052e36cd88a0abf041804b799b61c
- 253:4 0 10G 0 dm /var/lib/docker/devicemapper/mnt/e9f80849a2681e18549d3a4238cbf031e44052e36cd88a0abf041804b799b61c
-sdc 8:32 1 14.9G 0 disk
-└─sdc1 8:33 1 2G 0 part /run/media/claneys/97f418a5-612f-44e9-b968-a19505695151
-sda 8:0 0 931.5G 0 disk
-├─sda2 8:2 0 500G 0 part
-│ ├─Shamash-home 253:2 0 150G 0 lvm /home
-│ └─Shamash-root 253:0 0 50G 0 lvm /
-└─sda1 8:1 0 16G 0 part [SWAP]
-```
-
-Copy, still from your host:
-
-> **CAUTION:** Make sure to sync IO with sync command before unplug your SDcard. It could be corrupted if removed before all pending IO aren't done.
+Connected to the target, here is how to load the virtual CAN device driver and set up a new vcan device :
```bash
-$ sudo cp ~/devel/docker/share/libafbwsc-dev-1.0-r0.cortexa15hf_neon.rpm /run/media/claneys/97f418a5-612f-44e9-b968-a19505695151/home/root
-$ sync
+modprobe vcan
+ip link add vcan0 type vcan
+ip link set vcan0 up
```
-Insert the modified SDcard in your Porter board and boot from it. You are ready to go.
-
-## Configure the AGL system
+You also can named your linux CAN device like you want and if you need name it `can0` :
-### Virtual CAN device
-
-Connected to the target, here is how to load the virtual CAN device driver and set up a new vcan device :
```bash
-# modprobe vcan
-# ip link add vcan0 type vcan
-# ip link set vcan0 up
+modprobe vcan
+ip link add can0 type vcan
+ip link set can0 up
```
-### CAN device using the USB CAN adapter
+## CAN device using the USB CAN adapter
Using real connection to CAN bus of your car using the USB CAN adapter connected to the OBD2 connector.
Once connected, launch `dmesg` command and search which device to use :
```bash
-# dmesg
+dmesg
[...]
[ 131.871441] usb 1-3: new full-speed USB device number 4 using ohci-pci
[ 161.860504] can: controller area network core (rev 20120528 abi 9)
[ 1872.809356] usbcore: registered new interface driver usb_8dev
```
-Here device is named **can0**.
+Here device is named `can0`.
This instruction assuming a speed of 500000kbps for your CAN bus, you can try others supported bitrate like 125000, 250000 if 500000 doesn't work:
```bash
-# ip link set can0 type can bitrate 500000
-# ip link set can0 up
-# ip link show can0
+ip link set can0 type can bitrate 500000
+ip link set can0 up
+ip link show can0
can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UNKNOWN qlen 10
link/can
can state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 0
clock 16000000
```
-## Configure the binding
+On a Rcar Gen3 board, you'll have your CAN device as `can1` because `can0` already exists as an embedded device.
-Configure the binding specifying in the JSON configuration file the CAN device\(s\) that it will to connect to. Edit file _/var/lib/afm/applications/low-can-binding/0.1/can\_buses.json_ and change the CAN device name to the one you have :
+The instructions will be the same:
-```json
-{
- "canbus": "can0"
-}
+```bash
+ip link set can1 type can bitrate 500000
+ip link set can1 up
+ip link show can1
+ can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UNKNOWN qlen 10
+ link/can
+ can state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 0
+ bitrate 500000 sample-point 0.875
+ tq 125 prop-seg 6 phase-seg1 7 phase-seg2 2 sjw 1
+ sja1000: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..64 brp-inc 1
+ clock 16000000
```
-If you have several specify CAN bus devices use an array:
+## Rename an existing CAN device
-```json
-{
- "canbus": [ "vcan0", "can0" ]
-}
+You can rename an existing CAN device using following command and doing so move an existing `can0` device to anything else and then use another device as `can0`. For a Rcar Gen3 board do the following by example:
+
+```bash
+sudo ip link set can0 down
+sudo ip link set can0 name bsp-can0
+sudo ip link set bsp-can0 up
```
-> **WARNING:** Make sure the CAN bus\(es\) you specify in your configuration file match those specified in your generated source file with the [can-config-generator](http://github.com/iotbzh/can-config-generator).
+Then connect your USB CAN device that will be named `can0` by default.
+
+# Configure the binding
-## Run it, test it, use it !
+The binding reads system configuration file _/etc/dev-mapping.conf_ at start to map logical name from signals described in JSON file to linux devices name initialized by the system.
+Edit file _/etc/dev-mappping.conf_ and add mapping in section `CANbus-mapping`.
+
+Default binding configuration use a CAN bus named `hs` so you need to map it to the real one, here are some examples:
+
+* Using virtual CAN device as described in the previous chapter:
+```ini
+[CANbus-mapping]
+hs="vcan0"
+ls="vcan1"
+```
+
+* Using real CAN device, this example assume CAN bus traffic will be on can0.
+```ini
+[CANbus-mapping]
+hs="can0"
+ls="can1"
+```
+
+* On a Rcar Gen3 board there is an embedded CAN device so `can0` already exists. So you might want to use your USB CAN adapter plugged to the OBD2 connector, in this case use `can1`:
+```ini
+[CANbus-mapping]
+hs="can1"
+```
+
+> **CAUTION VERY IMPORTANT:** Make sure the CAN bus\(es\) you specify in your configuration file match those specified in your generated source file with the `CAN-config-generator`.
+
+# Run it, test it, use it !
You can run the binding using **afm-util** tool, here is the classic way to go :
```bash
-# afm-util run low-can-binding@0.1
+afm-util run low-can-service@2.0
1
```
So, to test it, it is better to launch the binding manually. In the following example, we will use port **1234** and left empty security token for testing purpose:
```bash
-# afb-daemon --ldpaths=/usr/lib/afb:/var/lib/afm/applications/low-can-binding/0.1/libs/ --rootdir=/var/lib/afm/applications/low-can-binding/0.1/ --port=1234 --token=
+afb-daemon --ldpaths=/usr/lib/afb:/var/lib/afm/applications/low-can-service/2.0/lib/ --rootdir=/var/lib/afm/applications/low-can-service/2.0/ --port=1234 --token=1
NOTICE: binding [/usr/lib/afb/afb-dbus-binding.so] calling registering function afbBindingV1Register
NOTICE: binding /usr/lib/afb/afb-dbus-binding.so loaded with API prefix dbus
NOTICE: binding [/usr/lib/afb/authLogin.so] calling registering function afbBindingV1Register
NOTICE: binding /usr/lib/afb/authLogin.so loaded with API prefix auth
-NOTICE: binding [/var/lib/afm/applications/low-can-binding/0.1/libs//low-can-binding.so] calling registering function afbBindingV1Register
-NOTICE: binding /var/lib/afm/applications/low-can-binding/0.1/libs//low-can-binding.so loaded with API prefix low-can
-NOTICE: Waiting port=1234 rootdir=/var/lib/afm/applications/low-can-binding/0.1/
+NOTICE: binding [/var/lib/afm/applications/low-can-service/2.0/libs//low-can-binding.so] calling registering function afbBindingV1Register
+NOTICE: binding /var/lib/afm/applications/low-can-service/2.0/libs//low-can-binding.so loaded with API prefix low-can
+NOTICE: Waiting port=1234 rootdir=/var/lib/afm/applications/low-can-service/2.0/
NOTICE: Browser URL= http:/*localhost:1234
-NOTICE: vcan0 device opened and reading {binding low-can}
-NOTICE: Initialized 1/1 can bus device(s) {binding low-can}
```
On another terminal, connect to the binding using previously installed _**AFB Websocket CLI**_ tool:
```bash
-# afb-client-demo ws://localhost:1234/api?token=
+afb-client-demo ws://localhost:1234/api?token=1
```
You will be on an interactive session where you can communicate directly with the binding API.
* Verb : _**subscribe**_ or _**unsubscribe**_
* Arguments : _**{ "event": "driver.doors.open" }**_
-### Subscription and unsubscription
+## Subscription and unsubscription
You can ask to subscribe to chosen CAN event with a call to _subscribe_ API verb with the CAN messages name as JSON argument.
Subscription and unsubscription can take wildcard in their _event_ value.
-To reveive all doors events :
+To receive all doors events :
```json
low-can subscribe { "event" : "doors*" }
ON-REPLY 3:low-can/unsubscribe: {"jtype":"afb-reply","request":{"status":"success"}}
```
-### Using CAN utils to monitor CAN activity
+### Filtering capabilities
+
+It is possible to limits received event notifications into minimum and maximum boundaries as well as doing frequency thinning. This is possible using the argument filter with one or more of the filters available :
+
+* frequency: specify in Hertz the frequency which will be used to getting notified of new CAN events for the designated signal. If, during the blocked time, further changed CAN messages are received, the last valid one will be transferred after the lockout with a RX_CHANGED.
+* min: Minimum value that the decoded value needs to be above to get pushed to the subscribed client(s).
+* max: Maximum value that the decoded value needs to be below to get pushed to the subscribed client(s)
+
+Order doesn't matter neither the number of filters chosen, you can use one, two or all of them at once.
+
+Usage examples :
+
+```json
+low-can subscribe {"event": "messages.engine.speed", "filter": { "frequency": 3, "min": 1250, "max": 3500}}
+low-can subscribe {"event": "messages.engine.load", "filter": { "min": 30, "max": 100}}
+low-can subscribe {"event": "messages.vehicle.speed", "filter": { "frequency": 2}}
+```
+
+## Using CAN utils to monitor CAN activity
You can watch CAN traffic and send custom CAN messages using can-utils preinstalled on AGL target.
To watch watch going on a CAN bus use:
```bash
-# candump can0
+candump can0
+```
+
+Or for an USB CAN adapter connected to porter board:
+
+```bash
+candump can1
```
Send a custom message:
```bash
-# cansend can0 ID#DDDDAAAATTTTAAAA
+cansend can0 ID#DDDDAAAATTTTAAAA
```
+You can also replay a previously dumped CAN logfiles. These logfiles can be found in _can_samples_ directory under Git repository. Following examples use a real trip from an Auris Toyota car.
+
+Trace has been recorded from a CAN device `can0` so you have to map it to the correct one you use for your tests.
+Replay on a virtual CAN device `vcan0`:
+```bash
+canplayer -I trip_test_with_obd2_vehicle_speed_requests vcan0=can0
+```
+Replay on a CAN device `can0`:
+```bash
+canplayer -I trip_test_with_obd2_vehicle_speed_requests can0
+```
+
+Replay on a CAN device `can1` (porter by example):
+```bash
+canplayer -I trip_test_with_obd2_vehicle_speed_requests can1=can0
+```
Code Review / apps / agl-service-can-low-level.git / blobdiff