arch/arm/stm32: set F412 SRAM1_END to 256KiB - #20039
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The F412 has 256KiB of system SRAM at 0x20000000 and no CCM. The F2/F4 heap map had no F412 entry, so it used the 128KiB default at 0x20020000 and left the upper half unused. Signed-off-by: Jacob Dahl <dahl.jakejacob@gmail.com>
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September 1, 2026 20:26
This was referenced Sep 1, 2026
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Summary
The STM32F412 has 256 KiB of system SRAM at
0x20000000and no CCM. The F2/F4 heap map never named it, soSRAM1_ENDfell through to the 128 KiB default at0x20020000and the upper half was left out of the heap.Impact
Testing
nxstyleclean onarch/arm/src/common/stm32/stm32_allocateheap_m3m4_v1.c. PX4 carry is PX4/NuttX (10.3) and a matching 12.12 backport; those rebuildark_can-flow-mr_canbootloader/ark_cannode_canbootloaderwithCONFIG_ARCH_CHIP_STM32F412VG/CG.