ally lower) than the peripheral interrupt. Otherwise the caller ISR process will be blocked. To change the SysTick interrupt priority you have to use HAL_NVIC_SetPriority() function.</li>
<li>The application needs to ensure that the SysTick time base is always set to 1 millisecond to have correct HAL operation.</li>
</ol>
<h3 id="keywords"><b>Keywords</b></h3>
<p>Graphics, DMA2D, Display ,SRAM, RGB565, Pixel Format Conversion (PFC), Memory to memory, Foreground, Background, pixel</p>
<h3 id="directory-conte