26 lines
753 B
Plaintext
26 lines
753 B
Plaintext
README
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^^^^^^
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README for NuttX port to the SAM4CMP-DB board.
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http://www.atmel.com/tools/SAM4CMP-DB.aspx
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The board is intended to test NuttX SMP features for dual Cortex-M4.
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Settings
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^^^^^^^^
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1. Both CPUs are running at 92.160MHz with PLLB.
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2. Serial console can be used via on-board USB-UART (115200/8/N/1)
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3. Interrupt handlers such as timer and UART are handled on CPU0
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4. Both CPUs share internal SRAM0 (128KB)
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5. SRAM1 is used to boot CPU1.
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6. Cache controllers are disabled because of no snooping features.
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Status
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^^^^^^
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Currently SMP freature works on the board but is not stable.
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1. "nsh> sleep 1 &" works without crash.
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2. "nsh> smp " sometimes works but some assertions might happen.
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3. "nsh> ostest " causes deadlocks during the test.
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