Tool/software:
Hello,
I am working on the AM62Ax SK-EVM and trying to establish communication between a McSPI master and slave. My setup and observations are:
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Hardware context:
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AM62Ax device with two main McSPI instances available on user expansion pins.
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Out of these, one SPI instance is blocked by UART due to pinmux/demux usage.
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For my use case, I am configuring:
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Master: McSPI in interrupt mode (using MCU_SPI instance).
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Slave: McSPI on main domain SPI (available expansion pin).
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Software/driver context:
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Using MCU+ SDK for AM62Ax.
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As per documentation, DMA mode is not supported on MCU domain McSPI, hence master is limited to interrupt mode.
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Slave is configured in DMA mode for data reception.
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Issue observed:
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When slave is configured in DMA mode, the transfer hangs and the data received is corrupted.
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When slave is configured in interrupt mode, the same master–slave transfer works correctly and data is consistent.
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In both cases, master is always operating in interrupt mode.
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Expected behavior:
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Slave in DMA mode should receive data correctly from master operating in interrupt mode, without hang or corruption.
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Could you please confirm:
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Whether McSPI slave DMA mode is supported in AM62Ax for main domain SPI?
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If supported, are there any known limitations or constraints when using master in interrupt mode and slave in DMA mode?
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Any recommended configuration steps or reference examples for McSPI slave in DMA mode on AM62Ax?
