Add FreeRTOS and SPI mes and UART output

Core/Inc/stm32l4xx_it.h

@@ -51,12 +51,12 @@ void HardFault_Handler(void);
 void MemManage_Handler(void);
 void BusFault_Handler(void);
 void UsageFault_Handler(void);
-void SVC_Handler(void);
 void DebugMon_Handler(void);
-void PendSV_Handler(void);
 void SysTick_Handler(void);
 void DMA1_Channel2_IRQHandler(void);
 void DMA1_Channel3_IRQHandler(void);
+void DMA1_Channel4_IRQHandler(void);
+void SPI1_IRQHandler(void);
 /* USER CODE BEGIN EFP */
 
 /* USER CODE END EFP */