PROCESSOR-SDK-AM335X: UART Interrupt example

Hi Anil,

Which example are you referring to?

Thanks,

Max

Hello Max,

C:\ti\pdk_am335x_1_0_17\packages\ti\drv\uart\example 

I have taken an example from the above link. Just the difference i have seen is 

        count=UART_read(uart_handle,buffPointer,1000);

        count=UART_readPolling(uart_handle,buffPointer,1000);

this 2 functions is the change otherwise there is no other change.

But as per my knowledge there is a option that, we can make ReadCallback function also. but its not working like that, Why?

/* UART parameters structure polled mode*/
const UART_Params user_params = {
    UART_MODE_BLOCKING,     /* readMode */
    UART_MODE_BLOCKING,     /* writeMode */
    SemaphoreP_WAIT_FOREVER,/* readTimeout */
    SemaphoreP_WAIT_FOREVER,/* writeTimeout */
    NULL,                  /* readCallback */
    NULL,                 /* writeCallback */
    UART_RETURN_NEWLINE,  /* readReturnMode */
    UART_DATA_TEXT,       /* readDataMode */
    UART_DATA_TEXT,       /* writeDataMode */
    UART_ECHO_ON,         /* readEcho */
    115200,               /* baudRate */
    UART_LEN_8,           /* dataLength */
    UART_STOP_ONE,        /* stopBits */
    UART_PAR_NONE         /* parityType */
};

Instead of read Callback NULL function, we can go with real function like Interrupt based.

Anil.

Hello Max,

Even you can check my example that, I am unable to add GPIO_init function. I am getting, why? Because even I added a GPIO.h header also its giving a problem to me.

Can you tell me, how to add a GPIO tauggle code in this bare metal example?

Bare_Metal_Ex.zip

An in this above example i am unable to add GPIO tauggle example.

I am not getting, why this is that much complex to learn?

Hi Anil,

For starting with UART and GPIO simultaneously, I suggest starting with the baremetal template app.

It can be found in: <Processor SDK RTOS folder>\demos\rtos_template_app\am335x\evmAM335x\A8\template_app\baremetal

Thanks,

Max

Hello max,

If you check my post properly, I already attached the same example which you are suggesting me right now.

With the same I tried to attach a GPIO_init(); function but its showing me an error.

So that only I posted here.

and As I worked on MSP430FR5994, there Interrupt means - No need to call UART read function always to read UART. So that I am asking what is the meaning of Interrupt, inspite that I have to call that function always.

You can see in the image that once i added this GPIO_init(); function i am getting an error.

Please suggest some working example's to me.

Thanks,

Anil

Hi Anil,

You'll need to include a GPIO board definition file in your project.

These files for EVMs can be found in the pdk in the GPIO driver examples.

Thanks,

Max

Yes Max,

As you said, I added the library, but I checked that, GPIO_board.h library is already been added there.

But still I added and compiled it, again i am getting the same error.

Do I need to add it in Properties -> Build -> GNU compiler -> Directories ?

Because there also its already added.

What else we need to do?

Anil.

Waw Max,

This is really working for me, GPIO LED1 is toggling perfectly.

Really thanks for your support.

Now I am searching for Another GPIO to toggle, I will try.

Anil.