topic Re: Rx interrupts on fsl_uart component in Kinetis Design Studio

Rx interrupts on fsl_uart component

sergiosaucedo — Mon, 06 Jun 2016 18:57:17 GMT

Good Afternoon! Can someone help me whit this isue? I wanna use a Rx and Tx interrupts whit the fsl_uart component, but when I try to get the received characters I can't visualize it. I used an example where all the code is in main.c and it works as well, but I wanna try that code doesn't be at main.c, can the code goes in to events.c? or How can I manage the interrupts?

Re: Rx interrupts on fsl_uart component

DavidS — Mon, 06 Jun 2016 20:33:50 GMT

Hi Sergio,

I am assuming you are using KSDK_1.3 with Processor Expert. Correct?

Assuming yes, then you can right click on the Component and select "Help on Component" and the click on the "Methods".

You will see "UART_DRV_InstallRxCallback -Installs the callback function for the UART receive." is available.

Optionally in the following path is PDF:

C:\Freescale\KSDK_1.3.0\doc\Kinetis SDK v.1.3 API Reference Manual.pdf

This also has UART section to speak about HAP and Peripheral Driver API's.

Regards,

David

Re: Rx interrupts on fsl_uart component

sergiosaucedo — Mon, 06 Jun 2016 21:50:47 GMT

Hi David

Thanks for the answer, yes i'm using KDSK_1.3.

I'm gonna try to undestand how is the UART_DRV_InstallRxCallback works, so if i wan to receive data from UART I will need to call UART_DRV_InstallRxCallback just one time, or everytime as the UART receive data?

Re: Rx interrupts on fsl_uart component

Alice_Yang — Tue, 07 Jun 2016 02:30:04 GMT

Hello Sergio,

You only need call UART_DRV_InstallRxCallback just one time.

There is a demo about how to use the UART callback funciton , it is base on KSDK1.2 ,

while the method is the same , i think you can refer to .

The usage of UART callback function install

In this thread , it mentioned one bug on ksdk1.2 when uses UART interrupt function,

you can check your KSDK1.3 , whether it also have , if yes, the workaround is the same .

Hope it helps

Have a great day,
Alice

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