2046819_en-US

[S32K3] Correspondence between S32K324 Lpspi 0~6 and DMA channel

In S32K344, do the various DMA channels have a fixed correspondence with LPSPI 0~6?

I configured DMA_IP_HW_CH_5 as LPSPI0 TX, DMA_IP_HW_CH_5=4 as LPSPI0 RX, LPSPI0 as slave SPI, and the DMA interrupt of RX was triggered when the master SPI was not initialized.

If DMA_IP_HW_CH_5 is configured as LPSPI0 RX and DMA_IP_HW_CH_5=4 is configured as LPSPI0 TX, then when the master spi starts to send a message, the TX interrupt is triggered first. Did I configure the DMA channel corresponding to SPI0 incorrectly?

Re: 【S32K3】S32K324 Lpspi 0~6 correspondence with DMA channel

Thank you for your reply, the problem has been solved, thank you.

Re: 【S32K3】S32K324 Lpspi 0~6与DMA channel的对应关系

Hello @TianyaoLi,

The DMA channels are not fixed to LPSPI module.

Can you please share the project or the configuration files?

From the description, I can't tell what configuration is incorrect.

Thank you,

BR, Daniel