S32k344 uses DMA to transmit uart error

[yulong]

Recently in the S32K344 board, using DMA mode to send UART, EB environment 28.0, S32DS: 3.5, MCAL: V2.0.1/AS4.4.0. When performing Mcl_Init(), there is no value in CHCFG[n], resulting in initialization failure. Can you help me find the reason? Looking forward to your reply

[danielmartynek]

Hi @yulong,

The DMAMUX is configured in the RM driver.

Do you configure DMAMUX in RM configurator and do you initialize the RM driver in the code?

Thanks,

BR, Daniel

[yulong · Accepted solution]

Thanks for you help.I have alredy solved it!Refer to this link :https://blog.csdn.net/zhoujingCSDN/article/details/142730383