Question of EDMA and LPUART receive

[rotato]

Hi，

I have a project of EDMA and LPUART  ,used S32K SDK. These are the codes snippet .

for(;;){

   PRINTF(welcomeMsg);    //LPUART send 

   readfromconsole(buffer);  //LPUART receive 

   PRINTF((char *)buffer);   // LPUART send 

   clearBuff(buffer,255);      // clear the buffer
}

These codes "readfromconsole(buffer);" only can execute at the first loop , so I just can input words form the PC CommUart assistant  only one time.

I can not resolve the problem.The whole project  is attached.

Forward your help ,thanks!

[raresvasile]

Hi,

It worked on my side using S32K144-EVB.

Please make sure that the terminal is appending \n(LF) to the message and that there are no breakpoints in readfromconsole.

Best regards,

Rares

[rotato]

Hi，Rares

I'm sure there are no breakpoints in readfromconsole and the message is end of "\n". But the function "readfromconsole" only  can execute at the first loop.As I debugged the project, I found it had stepped into these codes "LPUART_DRV_IRQHandler" and cannot stepped out.

void LPUART2_IrqHandler(void)
{
    LPUART_DRV_IRQHandler(2);
}