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ignore firmware update request without an ID

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This commit is contained in:
Matthew Kennedy
2026-04-03 03:19:37 -07:00
parent 39c7d9ad99
commit 91aa7c6229
1 changed files with 5 additions and 3 deletions
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8
firmware/can.cpp
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@@ -123,10 +123,12 @@ void CanRxThread(void*)
}
}
// If it's a bootloader entry request, reboot to the bootloader!
else if ((frame.DLC == 0 || frame.DLC == 1) && CAN_ID(frame) == WB_BL_ENTER)
// DLC=1 required: data[0] is 0xFF (all) or a specific controller index.
// DLC=0 is ignored so that only the targeted controller enters bootloader
// when multiple controllers share a bus.
else if (frame.DLC == 1 && CAN_ID(frame) == WB_BL_ENTER)
{
// If 0xFF (force update all) or our ID, reset to bootloader, otherwise ignore
if (frame.DLC == 0 || frame.data8[0] == 0xFF || frame.data8[0] == GetConfiguration()->CanIndexOffset)
if (frame.data8[0] == 0xFF || frame.data8[0] == GetConfiguration()->CanIndexOffset)
{
SendAck();