topic Re: LpSPI and eDMA performance on rt1180 in i.MX Processors

LpSPI and eDMA performance on rt1180

SimoneColomboWEG — Mon, 27 Jan 2025 10:51:25 GMT

Hi,

i'm testing the performance on rt1180 and SPI and DMA and the result is not as aspected, i've checked the example lpspi_edma_b2b_tranfert_master, this function:

LPSPI_MasterTransferEDMALite(EXAMPLE_LPSPI_MASTER_BASEADDR, &g_m_edma_handle,&masterXfer);

needs 49us to prepare eDMA to tranfert but i have 125us task and 49 is too high. is there an error on example implementing or this result is correct?

Simone

Re: LpSPI and eDMA performance on rt1180

EdwinHz — Mon, 27 Jan 2025 17:27:50 GMT

Hi @SimoneColomboWEG,

Since the RT1180 is still in preproduction and therefore not yet public, we are not able to provide you with information about this product on the public community forum just yet. Please contact your NXP representative that provided you with this device for the latest information about the RT1180.

Sorry for the inconvenience and thank you for your understanding.

BR,
Edwin.