Lightning Talk: SWUpdate Over CAN Bus - Can It?
summary
Implements SWUpdate over CAN using ISO-TP fragmentation and J1939 address claiming with a UDS proxy and a SWUpdate library that streams packages zero copy into an A/B partition layout. A 140 MB full firmware transfer can take about 9 hours over 250 kbps CAN while splitting OS and application reduces typical updates to ~10 minutes. Uses existing kernel support (mainline since ~5.6) plus a userspace UDS stack for certified vehicles and supports requestDownload/requestTransferExit activation.
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chapters (7)
- 0:00SWUpdate and speaker intro
- 1:50Challenge: CAN bus updates
- 3:58CAN bus update requirements
- 6:26Implementation: J1939, ISO-TP, UDS
- 9:18Update process and timing
- 10:45SWUpdate AB partitions
- 11:06Summary and future work
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