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/Inc/stm32g0xx_it.h

@@ -50,7 +50,7 @@ void NMI_Handler(void);
 void HardFault_Handler(void);
 void DMA1_Channel1_IRQHandler(void);
 void DMA1_Channel2_3_IRQHandler(void);
-void TIM1_BRK_UP_TRG_COM_IRQHandler(void);
+void TIM17_IRQHandler(void);
 void USART2_IRQHandler(void);
 /* USER CODE BEGIN EFP */
 

Core/Inc/tim.h

@@ -0,0 +1,54 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    tim.h
+  * @brief   This file contains all the function prototypes for
+  *          the tim.c file
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2026 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __TIM_H__
+#define __TIM_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+extern TIM_HandleTypeDef htim1;
+
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+void MX_TIM1_Init(void);
+
+void HAL_TIM_MspPostInit(TIM_HandleTypeDef *htim);
+
+/* USER CODE BEGIN Prototypes */
+
+/* USER CODE END Prototypes */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __TIM_H__ */
+

Core/Src/gpio.c

@@ -68,11 +68,11 @@ void MX_GPIO_Init(void)
   HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
 
   /*Configure GPIO pins : PA0 PA1 PA4 PA5
-                           PA6 PA7 PA8 PA11
+                           PA6 PA7 PA11 PA12
-                           PA12 PA15 */
+                           PA15 */
   GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_4|GPIO_PIN_5
-                          |GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_11
+                          |GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_11|GPIO_PIN_12
-                          |GPIO_PIN_12|GPIO_PIN_15;
+                          |GPIO_PIN_15;
   GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
   GPIO_InitStruct.Pull = GPIO_NOPULL;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

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();
   }

Core/Src/stm32g0xx_hal_timebase_tim.c

@@ -25,12 +25,12 @@
 /* Private define ------------------------------------------------------------*/
 /* Private macro -------------------------------------------------------------*/
 /* Private variables ---------------------------------------------------------*/
-TIM_HandleTypeDef        htim1;
+TIM_HandleTypeDef        htim17;
 /* Private function prototypes -----------------------------------------------*/
 /* Private functions ---------------------------------------------------------*/
 
 /**
-  * @brief  This function configures the TIM1 as a time base source.
+  * @brief  This function configures the TIM17 as a time base source.
   *         The time source is configured  to have 1ms time base with a dedicated
   *         Tick interrupt priority.
   * @note   This function is called  automatically at the beginning of program after
@@ -47,15 +47,15 @@ HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
 
   HAL_StatusTypeDef     status = HAL_OK;
 
-  /* Enable TIM1 clock */
+  /* Enable TIM17 clock */
-  __HAL_RCC_TIM1_CLK_ENABLE();
+  __HAL_RCC_TIM17_CLK_ENABLE();
 
   /* Get clock configuration */
   HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);
 
   /* Get APB1 prescaler */
   uwAPB1Prescaler = clkconfig.APB1CLKDivider;
-  /* Compute TIM1 clock */
+  /* Compute TIM17 clock */
   if (uwAPB1Prescaler == RCC_HCLK_DIV1)
   {
     uwTimclock = HAL_RCC_GetPCLK1Freq();
@@ -65,39 +65,39 @@ HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
     uwTimclock = 2UL * HAL_RCC_GetPCLK1Freq();
   }
 
-  /* Compute the prescaler value to have TIM1 counter clock equal to 1MHz */
+  /* Compute the prescaler value to have TIM17 counter clock equal to 1MHz */
   uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000U) - 1U);
 
-  /* Initialize TIM1 */
+  /* Initialize TIM17 */
-  htim1.Instance = TIM1;
+  htim17.Instance = TIM17;
 
   /* Initialize TIMx peripheral as follow:
-   * Period = [(TIM1CLK/1000) - 1]. to have a (1/1000) s time base.
+   * Period = [(TIM17CLK/1000) - 1]. to have a (1/1000) s time base.
    * Prescaler = (uwTimclock/1000000 - 1) to have a 1MHz counter clock.
    * ClockDivision = 0
    * Counter direction = Up
    */
-  htim1.Init.Period = (1000000U / 1000U) - 1U;
+  htim17.Init.Period = (1000000U / 1000U) - 1U;
-  htim1.Init.Prescaler = uwPrescalerValue;
+  htim17.Init.Prescaler = uwPrescalerValue;
-  htim1.Init.ClockDivision = 0;
+  htim17.Init.ClockDivision = 0;
-  htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
+  htim17.Init.CounterMode = TIM_COUNTERMODE_UP;
-  htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
+  htim17.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
 
-  status = HAL_TIM_Base_Init(&htim1);
+  status = HAL_TIM_Base_Init(&htim17);
   if (status == HAL_OK)
   {
 
     /* Start the TIM time Base generation in interrupt mode */
-    status = HAL_TIM_Base_Start_IT(&htim1);
+    status = HAL_TIM_Base_Start_IT(&htim17);
     if (status == HAL_OK)
     {
-    /* Enable the TIM1 global Interrupt */
+    /* Enable the TIM17 global Interrupt */
-        HAL_NVIC_EnableIRQ(TIM1_BRK_UP_TRG_COM_IRQn);
+        HAL_NVIC_EnableIRQ(TIM17_IRQn);
       /* Configure the SysTick IRQ priority */
       if (TickPriority < (1UL << __NVIC_PRIO_BITS))
       {
         /* Configure the TIM IRQ priority */
-        HAL_NVIC_SetPriority(TIM1_BRK_UP_TRG_COM_IRQn, TickPriority, 0U);
+        HAL_NVIC_SetPriority(TIM17_IRQn, TickPriority, 0U);
         uwTickPrio = TickPriority;
       }
       else
@@ -113,25 +113,25 @@ HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
 
 /**
   * @brief  Suspend Tick increment.
-  * @note   Disable the tick increment by disabling TIM1 update interrupt.
+  * @note   Disable the tick increment by disabling TIM17 update interrupt.
   * @param  None
   * @retval None
   */
 void HAL_SuspendTick(void)
 {
-  /* Disable TIM1 update Interrupt */
+  /* Disable TIM17 update Interrupt */
-  __HAL_TIM_DISABLE_IT(&htim1, TIM_IT_UPDATE);
+  __HAL_TIM_DISABLE_IT(&htim17, TIM_IT_UPDATE);
 }
 
 /**
   * @brief  Resume Tick increment.
-  * @note   Enable the tick increment by Enabling TIM1 update interrupt.
+  * @note   Enable the tick increment by Enabling TIM17 update interrupt.
   * @param  None
   * @retval None
   */
 void HAL_ResumeTick(void)
 {
-  /* Enable TIM1 Update interrupt */
+  /* Enable TIM17 Update interrupt */
-  __HAL_TIM_ENABLE_IT(&htim1, TIM_IT_UPDATE);
+  __HAL_TIM_ENABLE_IT(&htim17, TIM_IT_UPDATE);
 }
 

Core/Src/stm32g0xx_it.c

@@ -58,7 +58,7 @@
 extern DMA_HandleTypeDef hdma_usart2_rx;
 extern DMA_HandleTypeDef hdma_usart2_tx;
 extern UART_HandleTypeDef huart2;
-extern TIM_HandleTypeDef htim1;
+extern TIM_HandleTypeDef htim17;
 
 /* USER CODE BEGIN EV */
 
@@ -133,17 +133,17 @@ void DMA1_Channel2_3_IRQHandler(void)
 }
 
 /**
-  * @brief This function handles TIM1 break, update, trigger and commutation interrupts.
+  * @brief This function handles TIM17 global interrupt.
   */
-void TIM1_BRK_UP_TRG_COM_IRQHandler(void)
+void TIM17_IRQHandler(void)
 {
-  /* USER CODE BEGIN TIM1_BRK_UP_TRG_COM_IRQn 0 */
+  /* USER CODE BEGIN TIM17_IRQn 0 */
 
-  /* USER CODE END TIM1_BRK_UP_TRG_COM_IRQn 0 */
+  /* USER CODE END TIM17_IRQn 0 */
-  HAL_TIM_IRQHandler(&htim1);
+  HAL_TIM_IRQHandler(&htim17);
-  /* USER CODE BEGIN TIM1_BRK_UP_TRG_COM_IRQn 1 */
+  /* USER CODE BEGIN TIM17_IRQn 1 */
 
-  /* USER CODE END TIM1_BRK_UP_TRG_COM_IRQn 1 */
+  /* USER CODE END TIM17_IRQn 1 */
 }
 
 /**

Core/Src/tim.c

@@ -0,0 +1,159 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    tim.c
+  * @brief   This file provides code for the configuration
+  *          of the TIM instances.
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2026 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+/* Includes ------------------------------------------------------------------*/
+#include "tim.h"
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+TIM_HandleTypeDef htim1;
+
+/* TIM1 init function */
+void MX_TIM1_Init(void)
+{
+
+  /* USER CODE BEGIN TIM1_Init 0 */
+
+  /* USER CODE END TIM1_Init 0 */
+
+  TIM_MasterConfigTypeDef sMasterConfig = {0};
+  TIM_OC_InitTypeDef sConfigOC = {0};
+  TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};
+
+  /* USER CODE BEGIN TIM1_Init 1 */
+
+  /* USER CODE END TIM1_Init 1 */
+  htim1.Instance = TIM1;
+  htim1.Init.Prescaler = 63;
+  htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
+  htim1.Init.Period = 999;
+  htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
+  htim1.Init.RepetitionCounter = 0;
+  htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
+  if (HAL_TIM_PWM_Init(&htim1) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
+  sMasterConfig.MasterOutputTrigger2 = TIM_TRGO2_RESET;
+  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
+  if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  sConfigOC.OCMode = TIM_OCMODE_PWM1;
+  sConfigOC.Pulse = 0;
+  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
+  sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
+  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
+  sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
+  sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
+  if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
+  sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
+  sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
+  sBreakDeadTimeConfig.DeadTime = 0;
+  sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
+  sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
+  sBreakDeadTimeConfig.BreakFilter = 0;
+  sBreakDeadTimeConfig.BreakAFMode = TIM_BREAK_AFMODE_INPUT;
+  sBreakDeadTimeConfig.Break2State = TIM_BREAK2_DISABLE;
+  sBreakDeadTimeConfig.Break2Polarity = TIM_BREAK2POLARITY_HIGH;
+  sBreakDeadTimeConfig.Break2Filter = 0;
+  sBreakDeadTimeConfig.Break2AFMode = TIM_BREAK_AFMODE_INPUT;
+  sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
+  if (HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN TIM1_Init 2 */
+
+  /* USER CODE END TIM1_Init 2 */
+  HAL_TIM_MspPostInit(&htim1);
+
+}
+
+void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef* tim_pwmHandle)
+{
+
+  if(tim_pwmHandle->Instance==TIM1)
+  {
+  /* USER CODE BEGIN TIM1_MspInit 0 */
+
+  /* USER CODE END TIM1_MspInit 0 */
+    /* TIM1 clock enable */
+    __HAL_RCC_TIM1_CLK_ENABLE();
+  /* USER CODE BEGIN TIM1_MspInit 1 */
+
+  /* USER CODE END TIM1_MspInit 1 */
+  }
+}
+void HAL_TIM_MspPostInit(TIM_HandleTypeDef* timHandle)
+{
+
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(timHandle->Instance==TIM1)
+  {
+  /* USER CODE BEGIN TIM1_MspPostInit 0 */
+
+  /* USER CODE END TIM1_MspPostInit 0 */
+
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+    /**TIM1 GPIO Configuration
+    PA8     ------> TIM1_CH1
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_8;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF2_TIM1;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+  /* USER CODE BEGIN TIM1_MspPostInit 1 */
+
+  /* USER CODE END TIM1_MspPostInit 1 */
+  }
+
+}
+
+void HAL_TIM_PWM_MspDeInit(TIM_HandleTypeDef* tim_pwmHandle)
+{
+
+  if(tim_pwmHandle->Instance==TIM1)
+  {
+  /* USER CODE BEGIN TIM1_MspDeInit 0 */
+
+  /* USER CODE END TIM1_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_TIM1_CLK_DISABLE();
+  /* USER CODE BEGIN TIM1_MspDeInit 1 */
+
+  /* USER CODE END TIM1_MspDeInit 1 */
+  }
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+

STM32G030F6P6_Evaluation.ioc

@@ -57,17 +57,22 @@ Mcu.IP1=FREERTOS
 Mcu.IP2=NVIC
 Mcu.IP3=RCC
 Mcu.IP4=SYS
-Mcu.IP5=USART2
+Mcu.IP5=TIM1
-Mcu.IPNb=6
+Mcu.IP6=USART2
+Mcu.IPNb=7
 Mcu.Name=STM32G030F6Px
 Mcu.Package=TSSOP20
 Mcu.Pin0=PA2
 Mcu.Pin1=PA3
-Mcu.Pin2=PA13
+Mcu.Pin2=PB0
-Mcu.Pin3=PA14-BOOT0
+Mcu.Pin3=PB1
-Mcu.Pin4=VP_FREERTOS_VS_CMSIS_V1
+Mcu.Pin4=PB2
-Mcu.Pin5=VP_SYS_VS_tim1
+Mcu.Pin5=PA8
-Mcu.PinsNb=6
+Mcu.Pin6=PA13
+Mcu.Pin7=PA14-BOOT0
+Mcu.Pin8=VP_FREERTOS_VS_CMSIS_V1
+Mcu.Pin9=VP_SYS_VS_tim17
+Mcu.PinsNb=10
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32G030F6Px
@@ -84,9 +89,9 @@ NVIC.SavedPendsvIrqHandlerGenerated=true
 NVIC.SavedSvcallIrqHandlerGenerated=true
 NVIC.SavedSystickIrqHandlerGenerated=true
 NVIC.SysTick_IRQn=true\:3\:0\:false\:false\:false\:true\:false\:true\:false
-NVIC.TIM1_BRK_UP_TRG_COM_IRQn=true\:3\:0\:false\:false\:true\:false\:false\:true\:true
+NVIC.TIM17_IRQn=true\:3\:0\:false\:false\:true\:false\:false\:true\:true
-NVIC.TimeBase=TIM1_BRK_UP_TRG_COM_IRQn
+NVIC.TimeBase=TIM17_IRQn
-NVIC.TimeBaseIP=TIM1
+NVIC.TimeBaseIP=TIM17
 NVIC.USART2_IRQn=true\:3\:0\:false\:false\:true\:true\:false\:true\:true
 PA13.Mode=Serial_Wire
 PA13.Signal=SYS_SWDIO
@@ -97,7 +102,12 @@ PA2.Mode=Asynchronous
 PA2.Signal=USART2_TX
 PA3.Mode=Asynchronous
 PA3.Signal=USART2_RX
+PA8.Locked=true
+PA8.Signal=S_TIM1_CH1
+PB0.Locked=true
 PB0__PB1__PB2__PA8.StandardMode=true
+PB1.Locked=true
+PB2.Locked=true
 PB3__PB4__PB5__PB6.StandardMode=true
 PB7__PB8.StandardMode=true
 PC14-OSC32_IN\ (PC14)__PB9.StandardMode=true
@@ -172,11 +182,18 @@ RCC.SYSCLKSource=RCC_SYSCLKSOURCE_PLLCLK
 RCC.USART1Freq_Value=64000000
 RCC.VCOInputFreq_Value=16000000
 RCC.VCOOutputFreq_Value=128000000
+SH.S_TIM1_CH1.0=TIM1_CH1,PWM Generation1 CH1
+SH.S_TIM1_CH1.ConfNb=1
+TIM1.AutoReloadPreload=TIM_AUTORELOAD_PRELOAD_ENABLE
+TIM1.Channel-PWM\ Generation1\ CH1=TIM_CHANNEL_1
+TIM1.IPParameters=Channel-PWM Generation1 CH1,Prescaler,Period,AutoReloadPreload
+TIM1.Period=999
+TIM1.Prescaler=63
 USART2.IPParameters=VirtualMode-Asynchronous
 USART2.VirtualMode-Asynchronous=VM_ASYNC
 VP_FREERTOS_VS_CMSIS_V1.Mode=CMSIS_V1
 VP_FREERTOS_VS_CMSIS_V1.Signal=FREERTOS_VS_CMSIS_V1
-VP_SYS_VS_tim1.Mode=TIM1
+VP_SYS_VS_tim17.Mode=TIM17
-VP_SYS_VS_tim1.Signal=SYS_VS_tim1
+VP_SYS_VS_tim17.Signal=SYS_VS_tim17
 board=custom
 rtos.0.ip=FREERTOS