topic Re: LINFlexD with UART+DMA caused Reset in S32G

LINFlexD with UART+DMA caused Reset

Siyan — Wed, 20 Sep 2023 02:06:43 GMT

Hi, NXP,

On EB Tresos with 'SW32G_RTD_4.4_S32CC_4.0.1\eclipse\plugins\Uart_TS_T40D11M40I1R0' module, configure the 'Uart Asynchronous Method' to 'LINFLEXD_UART_IP_USING_DMA' and assign accordance DMA channel.

When the program execute Uart_Init(); and change the LINFlexD mode from Init to Normal, the SOC will reset immediately.

Please give some advices on how to solve this issue.

Figure 1: Configuration Page of UART

Figure 2: Register of LINFlexD0 before change mode to Normal

Re: LINFlexD with UART+DMA caused Reset

ssimpson — Wed, 16 Apr 2025 21:35:25 GMT

I've experienced a similar problem. Curious if there was a solution.

Re: LINFlexD with UART+DMA caused Reset

mabduljawad — Tue, 20 May 2025 08:14:10 GMT

Hello All

I am facing the same issue, were you able to solve it ?

@Siyan @ssimpson

Re: LINFlexD with UART+DMA caused Reset

ssimpson — Mon, 09 Jun 2025 14:09:09 GMT

Late reply: The S32G has a limitation where UART 0 does not support DMA, it is noted in one of the UART manuals.
This manifests in the S32G being nonresponsive when setting uart 0 for dma (at least from my observations).
The other UART interfaces I believe do support DMA.

Re: LINFlexD with UART+DMA caused Reset

alejandro_e — Tue, 10 Jun 2025 19:02:40 GMT

Hello @Siyan,

I am sorry for this late reply. Are you still experiencing this issue?

If so, please share the DMA general configuration and the configuration of the logical channels you are using for the UART configuration?

Sorry again and thanks for the information.