feat(F051): ARK4IN1 bootloader holds DRV8328 nSLEEP low - #4
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Add board product AM32_F051_BOOTLOADER_ARK4IN1: same PB4 signal pin as the generic F051 PB4 build, plus PA15 driven low so the DRV8328 stays asleep for the whole bootloader stay (lower idle power). - bl_gate_driver_off() on F051 (optional GATE_DRIVER_OFF_PORT/PIN_NUM) - main() calls it after GPIO init when those defines are set - Makefile CREATE_BOARD_BOOTLOADER_TARGET for named board products Generic PB4 / other pins unchanged. G431 ENABLE-off stays on the stacked gate-driver-off branch for a follow-up PR.
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Summary
Mergeable F051-only slice of the gate-driver-off work so ARK 4IN1 can ship nSLEEP-low in the bootloader without waiting on the G431 dual-protocol stack.
AM32_F051_BOOTLOADER_ARK4IN1…_PB4)Generic
AM32_F051_BOOTLOADER_PB4is unchanged (other boards use PA15 as the signal pin).Bench (one of four 4IN1 channels, DC supply, disarmed)
Companion app PR: ARK32
feat/f051-nsleep-idle(sleep nSLEEP when not driving). App must embed this BL blob or first boot will rewrite stock PB4 over it.Build
make AM32_F051_BOOTLOADER_ARK4IN1 # -> obj/AM32_F051_BOOTLOADER_ARK4IN1_V18.bin (~3996 B / 4064)Follow-up
G431 DRV8350 ENABLE-low remains on
feat/gate-driver-off(stacked on dual-protocol).Test plan
make AM32_F051_BOOTLOADER_ARK4IN1builds and fits 4kmake AM32_F051_BOOTLOADER_PB4still builds; bin differs