fmu-v6xrt: Add DTCM to heap #25733
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fmu-v6xrt: Add DTCM to heap #25733
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Move ramvectors from DTCM to ITCM, this seems to better in general. Also ITCM is marked as RO so is safer anyhow, now that DTCM is fully unused we add DTCM region of 256kB to memory allocator. Increases usable memory from 1536kB to 1792kB and decrease system load a bit since DTCM is faster
davids5
approved these changes
Oct 10, 2025
dakejahl
approved these changes
Oct 10, 2025
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Move ramvectors from DTCM to ITCM, this seems to better in general. Also ITCM is marked as RO so is safer anyhow, now that DTCM is fully unused we add DTCM region of 256kB to the memory allocator. Increases usable memory from 1536kB to 1792kB and decrease system load.
Before without DTCM CPU IDLE 71%
After with DTCM CPU IDLE 77%
Stress tested memory using the NuttX
CONFIG_TESTING_MMutility.