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EDS v1.7.4 — ISO-TP TX frame padding

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@Xaloqi Xaloqi released this 21 Jun 10:00
v1.7.4
a64bb26

What's new

ISO-TP TX frame padding (ISOTP_TX_PADDING)

Opt-in padding of transmitted SF, CF, FC, and CAN FD FF frames per ISO 15765-2 Annex B. Unused bytes are filled with 0xCC and DLC is extended to the next valid frame size. Default off — zero behaviour change for existing integrations.

Frame Padding off Padding on
Classic CAN SF DLC = length+1 DLC = 8, tail = 0xCC
CAN FD SF DLC = length+2 DLC = next valid FD DLC
Classic CAN FF DLC = 8 (unchanged) DLC = 8 (already full)
CAN FD FF escape DLC = 6+data DLC = next valid FD DLC
Classic CAN CF DLC = bytes+1 DLC = 8, tail = 0xCC
FC DLC = 3 DLC = 8, bytes [3..7] = 0xCC

Zephyr: CONFIG_ISOTP_TX_PADDING=y in prj.conf
FreeRTOS / bare-metal: -DISOTP_TX_PADDING=1 compiler flag

See docs/ISOTP_PADDING.md for full reference.

Closes #29.

Upgrade

# west.yml
- name: eds
  url: https://github.com/Xaloqi/EDS
  revision: v1.7.4
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