emwin 刷2d图形会影响串口dma接收数据

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emwin 刷2d图形会影响串口dma接收数据

984 次查看
944706426
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mcu:rt1052 s
dk :2.3.1 
emwin :v5.50

项目中用到rt1052的串口dma环形缓冲区接收数据(参考sdk例子edma_rb_transfer),周期大概100ms,lcd跑emwin,实验发现如果单独运行是没有问题,但是两者一起运行,发现emwin刷新2d图形时(周期300ms),运行一段时间串口dma 有空闲中断产生,但接收的字节变为0,一直找不到原因,请教一下大家?

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966 次查看
gusarambula
NXP TechSupport
NXP TechSupport

Hello,

I see that you have posted this same question with some additional information on the following thread:

https://community.nxp.com/t5/i-MX-RT/Will-EMWIN-affect-rt1052-serial-port-DMA-reception/td-p/1269990

I’m adding this link as reference. Please follow up on that thread.

Regards,
Gustavo

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