t have higher priority (numerically 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.</p>
<p>The application needs to ensure that the SysTick time base is always set to 1 millisecond to have correct HAL operation.</p>
<p>The instruction cache (ICACHE) must be enabled by software to get a zero wait-state execution from Flash memory and external memories, and reach the maximum perfor