Linux CAN bus: Difference between revisions

Latest revision as of 21:56, 6 June 2023

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CAN bus

Connect two boards like the following:

Board A   Board B

 CAN_H --- CAN_H
 CAN_L --- CAN_L
  GND ----- GND

Set up the boards by running the following on each of them:

# ip link set can0 up type can bitrate 125000

Then:
On board A:

# candump can0

On board B:

# cansend can0 500#1E.10.10

@@ Line 1: / Line 1: @@
-{{PageHeader|CAN bus}}
+<!-- Set release according to "release" parameter in URL and use RELEASE_DUNFELL_V1.0_VAR-SOM-MX6 as default
-{{DocImage|category1=Yocto|category2=VAR-SOM-MX6}}[[Category:DART-6UL]] [[Category:VAR-SOM-MX7]]
+--> {{INIT_RELEASE_PARAM|RELEASE_DUNFELL_V1.0_VAR-SOM-MX6}}<!--
+--> {{#lst:Yocto_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!--
+--> {{#lst:B2QT_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!--
+--> {{#lst:Debian_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!--
+--> {{COMPAT_DEBIAN_LST_MODEL}} <!--
+--> {{PageHeader|CAN bus}} {{DocImage|category1=Yocto|category2=Debian}}[[Category:Boot2Qt]][[Category:Android]][[Category:VAR-SOM-MX6]][[Category:DART-6UL]][[Category:VAR-SOM-MX7]][[Category:DART-MX8M]][[Category:DART-MX8M-MINI]][[Category:VAR-SOM-MX8M-NANO]][[Category:VAR-SOM-MX8X]][[Category:VAR-SOM-MX8]][[Category:DART-MX8M-PLUS]]
-Starting Release 4 of Yocto, CAN bus is integrated into the system. No patch required.
+Connect two boards like the following:<br>
+ <u>Board A</u>   <u>Board B</u>
+  CAN_H --- CAN_H
+  CAN_L --- CAN_L
+   GND ----- GND
-Connect 2 boards. Each board JP26 connect to the other with the right cable.<br>
+Set up the boards by running the following on each of them:<br>
+ # ip link set can0 up type can bitrate 125000
-Set up the 2 boards by running on each of them:<br>
+Then:<br>
-<pre>
+On board A:<br>
-$ ip link set can0 up type can bitrate 125000
+ # candump can0
-</pre>
-On board #1:<br>
+On board B:<br>
-<pre>
+ # cansend can0 500#1E.10.10
-$ cansniffer can0
-</pre>
-On board #2:<br>
+{{#ifeq: {{#var:HARDWARE_NAME}} | DART-MX8M-PLUS |
-<pre>
+'''Note''': For DART-MX8M-PLUS SoMs, the reference interface is can2 instead of can0.
-$ cansend can0 500#1E.10.10
+|}}
-</pre>
+{{#ifexpr: {{#var:YOCTO_VERSION}} > 3.0 |
+{{#switch: {{#var:HARDWARE_NAME}}
+ | DART-MX8M-MINI
+ | VAR-SOM-MX8M-NANO = '''Note''': For VAR-SOM-MX8M-MINI/NANO rev. 1.0/1.1/1.2, see: [[VAR-SOM-MX8M-MINI-CAN|VAR-SOM-MX8M-MINI/NANO rev. 1.0/1.1/1.2 CAN bus support]]
+ |
+}}
+|}}