topic Re: S32K31X DMA UART About Destination Bus Error in S32K

S32K31X DMA UART About Destination Bus Error

Wan — Mon, 02 Jun 2025 07:11:26 GMT

Hello NXP Engnieer

Environment: S32K310 RTD S32K3XX 4.0.0.202407242201 S32DS3.6.1 MCAL

I use the dma send the uart data, but not success, I find the "function Static_Dma_Ip_GetLogicChannelError(LocHwVers, LocHwInst, LocHwCh, &LocChState->LogicChErrors)" value is= (1000 0000 0000 0000 0000 0000 0000 0001b) of "Dma_Ip_ReturnType Dma_Ip_SetLog

icChannelTransferList(const uint32 LogicCh, const Dma_Ip_LogicChannelTransferListType List[], const uint32 ListDimension) " in "Dma_ipo.c"

I don,t know how to slove it ! thanks

Re: S32K31X DMA UART About Destination Bus Error

PetrS — Tue, 03 Jun 2025 07:40:13 GMT

Hi,

I think there is no need for transfer config, this would be done by driver.
You can refer to below thread showing LPUART DMA usage in HLD;
https://community.nxp.com/t5/S32K-Knowledge-Base/RTD400-MCAL-K312-UART-DMA/ta-p/1967467
Hope it helps.

BR, Petr

Re: S32K31X DMA UART About Destination Bus Error

Wan — Tue, 03 Jun 2025 08:27:22 GMT

Hi PetrS

You refer to below thread showing LPUART DMA usage in HLD but not slove it.

https://community.nxp.com/t5/S32K-Knowledge-Base/RTD400-MCAL-K312-UART-DMA/ta-p/1967467

i through change the DMA CHANNEL 0 1 to DMA Channel 2,3, the software can send the data. but i don,t know why? I Browse through the muxdam.xls docoment never write any about DMA Limit.