How to trigger DMA with LPTMR in KW45

lingwen_kong — Fri, 16 Aug 2024 05:30:29 GMT

Hi NXP teams

I want to trigger DMA with LPTMR.

The attached folder is my IAR project.

This is my setting:

1. set DMA source to LPTMR0 and enable DMA channel request:

EDMA_SetChannelMux(DMA0, 0, (uint32_t)3); // LPTMR0
EDMA_EnableChannelRequest(DMA0, 0);

2. Enable DMA of LPTMR

LPTMR_EnableTimerDMA(DEMO_LPTMR_BASE, true);

With the setting above, LPTMR interrupt every second successfully, but DMA did not work.

Is there any other setting needed?

Best Regards.

Kong

topic How to trigger DMA with LPTMR in KW45 in Kinetis Microcontrollers