Difference between revisions of "J1939"
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| + | [[Category:Networking]] | ||
| + | = SAE J1939 in Linux = | ||
| + | == overview == | ||
| + | See also on [http://en.wikipedia.org/wiki/J1939 Wikipedia]. | ||
| − | + | SAE J1939 defines a higher layer protocol on CAN. It implements a more | |
| + | sophisticated addressing scheme and extends the maximum packet size above | ||
| + | 8 bytes. Several derived specifications exists, which differ from the | ||
| + | original j1939 on the application level, like MilCAN, NMEA2000 and | ||
| + | especially ISO-11783 (ISOBUS). This last one specifies the so-called ETP | ||
| + | (Extended Transport Protocol) which is has been included in this | ||
| + | implementation. This inclusion results in a maximum packet size of | ||
| + | ((2^24)-1)*7 bytes | ||
| − | == | + | === Specifications === |
| − | + | * SAE J1939-21 : data link layer | |
| − | * | + | * SAE J1939-81 : network management |
| − | * | + | * ISO 11783-6 : Virtual Terminal (Extended Transport Protocol) |
| − | |||
| − | + | == Sources == | |
| + | SAE J1939 got in mainline kernel since v5.4 | ||
| − | The | + | You will probably also want to use [http://github.com/linux-can/can-utils can-utils] |
| + | |||
| + | === Getting Started with J1939 === | ||
| + | |||
| + | The can-utils repository contains a good [https://github.com/linux-can/can-utils/blob/master/can-j1939-kickstart.md]. | ||
Latest revision as of 19:15, 14 October 2019
Contents
SAE J1939 in Linux
overview
See also on Wikipedia.
SAE J1939 defines a higher layer protocol on CAN. It implements a more sophisticated addressing scheme and extends the maximum packet size above 8 bytes. Several derived specifications exists, which differ from the original j1939 on the application level, like MilCAN, NMEA2000 and especially ISO-11783 (ISOBUS). This last one specifies the so-called ETP (Extended Transport Protocol) which is has been included in this implementation. This inclusion results in a maximum packet size of ((2^24)-1)*7 bytes
Specifications
- SAE J1939-21 : data link layer
- SAE J1939-81 : network management
- ISO 11783-6 : Virtual Terminal (Extended Transport Protocol)
Sources
SAE J1939 got in mainline kernel since v5.4
You will probably also want to use can-utils
Getting Started with J1939
The can-utils repository contains a good [1].
