Creating a new task for HW interaction

[HP_it]

Hello,

I'm trying to extend the example given in 'Method 2 - From other task', given here: https://touchgfx.zendesk.com/hc/en-us/articles/205074561-Connecting-the-UI-to-your-system

I am using the 746-Disco board and the example works just fine on my hardware.

My end goal is to have a task in the RTOS that can handle serial communication and send along info to the screen model (or transmit data entered on the screen).

to get started I have created a new task (serial_task) and placed it in serial.c (and serial.h). Basically I have just copied the 'condenser.c/.h' file combo and renamed the functions.

I have added serial.h to main.cpp and serial.c to the makefile.

I can compile just fine and I can even swap the two tasks around.

what I can NOT do is get them to work side by side.

In my main.cpp I have this:

xTaskCreate(condenser_task, (TASKCREATE_NAME_TYPE)"CondenserTask",
 512,
 NULL,
 configGUI_TASK_PRIORITY+1,
 NULL);
			 
	xTaskCreate(serial_task, (TASKCREATE_NAME_TYPE)"SerialTask",
 512,
 NULL,
 configGUI_TASK_PRIORITY+1,
 NULL);

but when I program the hardware the button is not responsive. If I don't start my serial task The system works just fine.

This is my serial task:

void serial_task(void* params)
{
	
 BSP_LED_Init(LED_GREEN);
 
 for(;;)
 {
 vTaskDelay(1000);
 
 BSP_LED_Toggle(LED_GREEN);
 
 }
}

I have removed the calls to the LED init and toggle from the condenser task.

Funny thing is that even if I don't start my serial task (which should handle the LED blinking stuff) the LED is still blinking (very fast)

I've also included serial.h into the model.cpp. I have no compiler problems but the system freezes.

Does someone know something obvious that I'm missing?

[HP_it]

Ah,

I might have found the answer myself - Heap size.

I changed the TOTAL_HEAP_SIZE to 6600 and reduced the task stack size to 128 - now the RTOS is running.

However - and this might be of importance. Even if I comment out EVERYTHING in my serial_task - that is ALL that should toggle the green LED on the board. it is still blinking happily away. I don't have any references to the toggling function anymore?

Anyone with similar issues?

[Martin KJELDSEN]

Hi @HP​,

Doesn't sound like that's the code running on the board, then. Could you reprogram it to verify?

/Martin

[HP_it]

I just tried to download another test application and then this one back on. It downloads just fine.

The files i've been messing around with is located in the 'target' folder. I can see that TouchGFX designer continually updates IAR/IAR8.X/KEIL and the simulator builds but only when I press 'program target' the GCC part is invoked.

Therefore I have only updated the makefile to include my own custom task .c file.

That should be enough right?

I have attached the project as well if you want to have a look at it.