Modified 'Timebase Source' from TIM1 to TIM17, TIM1 now operates with 1 MHz input and 1 ms period, channel 1 is configured as PWM output mode and mapped to PA8 to drive a buzzer.

Core/Src/main.c

@@ -20,6 +20,7 @@
 #include "main.h"
 #include "cmsis_os.h"
 #include "dma.h"
+#include "tim.h"
 #include "usart.h"
 #include "gpio.h"
 
@@ -92,6 +93,7 @@ int main(void)
   MX_GPIO_Init();
   MX_DMA_Init();
   MX_USART2_UART_Init();
+  MX_TIM1_Init();
   /* USER CODE BEGIN 2 */
 
   /* USER CODE END 2 */
@@ -166,7 +168,7 @@ void SystemClock_Config(void)
 
 /**
   * @brief  Period elapsed callback in non blocking mode
-  * @note   This function is called  when TIM1 interrupt took place, inside
+  * @note   This function is called  when TIM17 interrupt took place, inside
   * HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
   * a global variable "uwTick" used as application time base.
   * @param  htim : TIM handle
@@ -177,7 +179,7 @@ void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
   /* USER CODE BEGIN Callback 0 */
 
   /* USER CODE END Callback 0 */
-  if (htim->Instance == TIM1)
+  if (htim->Instance == TIM17)
   {
     HAL_IncTick();
   }