Why does model::tick() not getting called?

[manto.1]

I found out that LTDC interupt callback is not getting called but can't figure why.

Following code is auto generated by CubeMX LTDC interrupt is enabled in NVIC.

"TouchGFXGeneratedHAL.cpp"

extern "C"
{
    void HAL_LTDC_LineEventCallback(LTDC_HandleTypeDef* hltdc)
    {
        if (!HAL::getInstance())
        {
            return;
        }
 
        if (LTDC->LIPCR == lcd_int_active_line)
        {
            //entering active area
            HAL_LTDC_ProgramLineEvent(hltdc, lcd_int_porch_line);
            HAL::getInstance()->vSync();
            OSWrappers::signalVSync();
 
            // Swap frame buffers immediately instead of waiting for the task to be scheduled in.
            // Note: task will also swap when it wakes up, but that operation is guarded and will not have
            // any effect if already swapped.
            HAL::getInstance()->swapFrameBuffers();
            GPIO::set(GPIO::VSYNC_FREQ);
        }
        else
        {
            //exiting active area
            HAL_LTDC_ProgramLineEvent(hltdc, lcd_int_active_line);
 
            // Signal to the framework that display update has finished.
            HAL::getInstance()->frontPorchEntered();
            GPIO::clear(GPIO::VSYNC_FREQ);
        }
    }
}

 

[N. SANTINI]

Hi,

There could be several reasons for that but more information is needed here.

First, what is your STM32 ? Have you compared your code with the Board Setup of the closest MCU ?

Could you please specify your display definition, a well as the LTDC frequency you set ?

Do you reach the TouchGFXGeneratedHAL::enableInterrupts() call ?

If not, do you pass the TouchGFXGeneratedHAL::initialize() call successfully ?

What about LTDC registers ? Do you see the interrupts enabled in IER register ?

Could you maybe share more of your project in not all, notably the main.c (with LTDC init, ltdc.c otherwise) and full TouchGFXGenerated.cpp, TouchHAL.cpp and TouchGFXConfiguration.cpp ?

Best regards,

Nicolas