title: .\Objects\Usart.axf: Error: L6218E: Undefined symbol HAL_NVIC_SetPriority (referred from stm32f4xx_hal.o)
body: <p>I am using uart and added uart files manually from keil/PACKS/Drivers/HALdrivers  folder but after compiling i am facing the following errors.</p>
  <p><a href="https://i.stack.imgur.com/SgsbK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SgsbK.png" alt="enter image description here" /></a></p>