CC2640R2F: UART context call

Arubu

Part Number: CC2640R2F
Other Parts Discussed in Thread: SYSBIOS

Hello Team,

In my application I have to close the UART driver and the following method performs that.

void Uart_close(void) {
    UART_writeCancel(uartHandler);
    UART_readCancel(uartHandler);
    UART_close(uartHandler);
    uartHandler = NULL;
}

I get call the method above just in Hwi context. When I try to call it in Task or Swi context an exception is released.

ti.sysbios.family.arm.m3.Hwi.ExcContext

I wonder why the exception is being launched. Are there somewhere in documentation that show in what context I can to call the functions above?

Thank you in advance.

over 6 years ago

0 IUsedToBeARealPerson (M-W) over 6 years ago

TI__Guru 58425 points

Hi Arubu,

It should be OK to do what you want from inside interrupt context, you do however need to keep in mind that the "Cancel" functions can invoke the write/read callbacks so if you are working with callback mode, you need to make sure the respective callback does not make anything that interfere with the closing process.

0 Arubu over 6 years ago in reply to IUsedToBeARealPerson (M-W)

Intellectual 770 points

Hello M-W,

I am using the callback mode. For testing I commented all lines inside the write/read callbacks but the exception continue.
I call the function above from Task or Swi thread type.

Best regards,

Arubu

0 Arubu over 6 years ago in reply to IUsedToBeARealPerson (M-W)

Intellectual 770 points

In my case was not necessary to call the UART_writeCancel(uartHandler);

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CC2640R2F: UART context call