LPC55S69 ADC with DMA request

jimmyli — Thu, 02 Jan 2025 00:59:18 GMT

Hi,

I am testing the ADC0 with DMA request function for LPC55S69, but still can't get the DMA interrupt.

Can you help to check ?

Thanks very much.

1>Hardware: LPC55S69-EVK

2>SDK: 2.16.0 version

3>Configuration by config tool:

3.1>For ADC0, DMA request when FIFO0 Watermark event

Note: I have verified that FIFO0 Watermark event can generate the interrupt.

3.2>For DMA, enable ADC0 request and transfer the data to SRAM

4>Question

DMA can't generat the interrupt, and I am not sure whether ADC0 FIFO0 Watermark event request the DMA.

Thanks.

Re: LPC55S69 ADC with DMA request

Alice_Yang — Thu, 02 Jan 2025 09:00:23 GMT

Thank you for your interest in NXP Semiconductors.

Question "I am not sure whether the ADC0 FIFO0 Watermark event requests the DMA."

-> I recommend that you first check whether the DMA has transferred data to the SRAM.

For ADC + DMA, there are two threads that you can refer to. They all use the config tool developed.

Alice