From 4c4f7b8fc6c38bf3efa89842514b9d4032c10e29 Mon Sep 17 00:00:00 2001
From: "953308023@qq.com" <953308023@qq.com>
Date: Sat, 12 Jun 2021 17:39:07 +0800
Subject: [PATCH] auto reset the MCU when the raspberrypi CPU is reseted by the
 key

---
 .../STM32G030F6_R2/Core/Inc/stm32g0xx_it.h    |  1 +
 .../reTerminal/STM32G030F6_R2/Core/Src/main.c | 51 +++++++++++++++++++
 .../Core/Src/stm32g0xx_hal_msp.c              | 50 ++++++++++++++++++
 .../STM32G030F6_R2/Core/Src/stm32g0xx_it.c    | 15 ++++++
 .../STM32G030F6_R2/Core/User/i2c_slave.c      |  6 ++-
 .../STM32G030F6_R2/STM32G030F6_R2.ioc         | 15 ++++--
 6 files changed, 133 insertions(+), 5 deletions(-)

diff --git a/extras/reTerminal/STM32G030F6_R2/Core/Inc/stm32g0xx_it.h b/extras/reTerminal/STM32G030F6_R2/Core/Inc/stm32g0xx_it.h
index 386ba72..93abd1d 100644
--- a/extras/reTerminal/STM32G030F6_R2/Core/Inc/stm32g0xx_it.h
+++ b/extras/reTerminal/STM32G030F6_R2/Core/Inc/stm32g0xx_it.h
@@ -53,6 +53,7 @@ void SVC_Handler(void);
 void PendSV_Handler(void);
 void SysTick_Handler(void);
 void DMA1_Channel1_IRQHandler(void);
+void TIM14_IRQHandler(void);
 void I2C1_IRQHandler(void);
 /* USER CODE BEGIN EFP */
 
diff --git a/extras/reTerminal/STM32G030F6_R2/Core/Src/main.c b/extras/reTerminal/STM32G030F6_R2/Core/Src/main.c
index 89d6dd6..1916bb4 100644
--- a/extras/reTerminal/STM32G030F6_R2/Core/Src/main.c
+++ b/extras/reTerminal/STM32G030F6_R2/Core/Src/main.c
@@ -52,11 +52,13 @@ I2C_HandleTypeDef hi2c1;
 I2C_HandleTypeDef hi2c2;
 
 TIM_HandleTypeDef htim3;
+TIM_HandleTypeDef htim14;
 
 UART_HandleTypeDef huart2;
 
 /* USER CODE BEGIN PV */
 uint16_t AdcVal[ADC_CH_MAX] = { 0 };
+uint32_t i2c_int_cnt = 0;
 /* USER CODE END PV */
 
 /* Private function prototypes -----------------------------------------------*/
@@ -68,6 +70,7 @@ static void MX_I2C1_Init(void);
 static void MX_I2C2_Init(void);
 static void MX_TIM3_Init(void);
 static void MX_ADC1_Init(void);
+static void MX_TIM14_Init(void);
 /* USER CODE BEGIN PFP */
 
 /* USER CODE END PFP */
@@ -109,7 +112,10 @@ int main(void)
   MX_I2C2_Init();
   MX_TIM3_Init();
   MX_ADC1_Init();
+  MX_TIM14_Init();
   /* USER CODE BEGIN 2 */
+  __HAL_TIM_CLEAR_FLAG(&htim14, TIM_SR_UIF);
+  HAL_TIM_Base_Start_IT(&htim14);
   DBG_PRINT("ReTerminal stm32!\n");
   I2C_Slave_Init(&hi2c1);
   TP_Init(&hi2c2);
@@ -390,6 +396,37 @@ static void MX_TIM3_Init(void)
 
 }
 
+/**
+  * @brief TIM14 Initialization Function
+  * @param None
+  * @retval None
+  */
+static void MX_TIM14_Init(void)
+{
+
+  /* USER CODE BEGIN TIM14_Init 0 */
+
+  /* USER CODE END TIM14_Init 0 */
+
+  /* USER CODE BEGIN TIM14_Init 1 */
+
+  /* USER CODE END TIM14_Init 1 */
+  htim14.Instance = TIM14;
+  htim14.Init.Prescaler = 39999;
+  htim14.Init.CounterMode = TIM_COUNTERMODE_UP;
+  htim14.Init.Period = 29999;
+  htim14.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
+  htim14.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
+  if (HAL_TIM_Base_Init(&htim14) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN TIM14_Init 2 */
+
+  /* USER CODE END TIM14_Init 2 */
+
+}
+
 /**
   * @brief USART2 Initialization Function
   * @param None
@@ -475,6 +512,20 @@ static void MX_GPIO_Init(void)
 }
 
 /* USER CODE BEGIN 4 */
+void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
+{
+	if(htim == (&htim14)) {
+		if(i2c_int_cnt > 30){
+			//DBG_PRINT("if %d %d\n", TIM14->ARR, i2c_int_cnt);
+			TIM14->ARR = 800;
+		} else {
+			//DBG_PRINT("else %d %d\n", TIM14->ARR, i2c_int_cnt);
+			TIM14->ARR = 9999;
+			NVIC_SystemReset();
+		}
+		i2c_int_cnt = 0;
+	}
+}
 /* USER CODE END 4 */
 
 /**
diff --git a/extras/reTerminal/STM32G030F6_R2/Core/Src/stm32g0xx_hal_msp.c b/extras/reTerminal/STM32G030F6_R2/Core/Src/stm32g0xx_hal_msp.c
index 61c991a..7858395 100644
--- a/extras/reTerminal/STM32G030F6_R2/Core/Src/stm32g0xx_hal_msp.c
+++ b/extras/reTerminal/STM32G030F6_R2/Core/Src/stm32g0xx_hal_msp.c
@@ -308,6 +308,31 @@ void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef* htim_pwm)
 
 }
 
+/**
+* @brief TIM_Base MSP Initialization
+* This function configures the hardware resources used in this example
+* @param htim_base: TIM_Base handle pointer
+* @retval None
+*/
+void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* htim_base)
+{
+  if(htim_base->Instance==TIM14)
+  {
+  /* USER CODE BEGIN TIM14_MspInit 0 */
+
+  /* USER CODE END TIM14_MspInit 0 */
+    /* Peripheral clock enable */
+    __HAL_RCC_TIM14_CLK_ENABLE();
+    /* TIM14 interrupt Init */
+    HAL_NVIC_SetPriority(TIM14_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(TIM14_IRQn);
+  /* USER CODE BEGIN TIM14_MspInit 1 */
+
+  /* USER CODE END TIM14_MspInit 1 */
+  }
+
+}
+
 void HAL_TIM_MspPostInit(TIM_HandleTypeDef* htim)
 {
   GPIO_InitTypeDef GPIO_InitStruct = {0};
@@ -356,6 +381,31 @@ void HAL_TIM_PWM_MspDeInit(TIM_HandleTypeDef* htim_pwm)
 
 }
 
+/**
+* @brief TIM_Base MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param htim_base: TIM_Base handle pointer
+* @retval None
+*/
+void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* htim_base)
+{
+  if(htim_base->Instance==TIM14)
+  {
+  /* USER CODE BEGIN TIM14_MspDeInit 0 */
+
+  /* USER CODE END TIM14_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_TIM14_CLK_DISABLE();
+
+    /* TIM14 interrupt DeInit */
+    HAL_NVIC_DisableIRQ(TIM14_IRQn);
+  /* USER CODE BEGIN TIM14_MspDeInit 1 */
+
+  /* USER CODE END TIM14_MspDeInit 1 */
+  }
+
+}
+
 /**
 * @brief UART MSP Initialization
 * This function configures the hardware resources used in this example
diff --git a/extras/reTerminal/STM32G030F6_R2/Core/Src/stm32g0xx_it.c b/extras/reTerminal/STM32G030F6_R2/Core/Src/stm32g0xx_it.c
index d0d27fc..971f12f 100644
--- a/extras/reTerminal/STM32G030F6_R2/Core/Src/stm32g0xx_it.c
+++ b/extras/reTerminal/STM32G030F6_R2/Core/Src/stm32g0xx_it.c
@@ -58,6 +58,7 @@
 /* External variables --------------------------------------------------------*/
 extern DMA_HandleTypeDef hdma_adc1;
 extern I2C_HandleTypeDef hi2c1;
+extern TIM_HandleTypeDef htim14;
 /* USER CODE BEGIN EV */
 
 /* USER CODE END EV */
@@ -155,6 +156,20 @@ void DMA1_Channel1_IRQHandler(void)
   /* USER CODE END DMA1_Channel1_IRQn 1 */
 }
 
+/**
+  * @brief This function handles TIM14 global interrupt.
+  */
+void TIM14_IRQHandler(void)
+{
+  /* USER CODE BEGIN TIM14_IRQn 0 */
+
+  /* USER CODE END TIM14_IRQn 0 */
+  HAL_TIM_IRQHandler(&htim14);
+  /* USER CODE BEGIN TIM14_IRQn 1 */
+
+  /* USER CODE END TIM14_IRQn 1 */
+}
+
 /**
   * @brief This function handles I2C1 event global interrupt / I2C1 wake-up interrupt through EXTI line 23.
   */
diff --git a/extras/reTerminal/STM32G030F6_R2/Core/User/i2c_slave.c b/extras/reTerminal/STM32G030F6_R2/Core/User/i2c_slave.c
index 22ab351..7e2bef3 100644
--- a/extras/reTerminal/STM32G030F6_R2/Core/User/i2c_slave.c
+++ b/extras/reTerminal/STM32G030F6_R2/Core/User/i2c_slave.c
@@ -49,12 +49,12 @@ static uint8_t TxCnt = 0;
 static uint8_t TxBuf[TP_BUF_SIZE] = { 0 };
 static uint8_t TxTotal = 0;
 static uint8_t HandleFlag = 0;
-
+extern uint32_t i2c_int_cnt;
 void I2C_Slave_Process(void)
 {
 	if (!HandleFlag) return;
 	HandleFlag = 0;
-	
+
 	MDBG("RxCnt=%d\n", RxCnt);
 	if (RxCnt == 1) { // set addr
 		if (RxBuf[0] >= 0x80) {
@@ -147,6 +147,8 @@ void I2C_Slave_ISR(I2C_HandleTypeDef *hi2c)
 {
 	uint32_t isr = hi2c->Instance->ISR;
 
+	i2c_int_cnt++;
+
 	MDBG("[%d]0x%x\n", cnt++, isr);
 	if (isr & I2C_FLAG_ALERT) {
 		MDBG("ALERT\n");
diff --git a/extras/reTerminal/STM32G030F6_R2/STM32G030F6_R2.ioc b/extras/reTerminal/STM32G030F6_R2/STM32G030F6_R2.ioc
index e534265..459d6ef 100644
--- a/extras/reTerminal/STM32G030F6_R2/STM32G030F6_R2.ioc
+++ b/extras/reTerminal/STM32G030F6_R2/STM32G030F6_R2.ioc
@@ -9,6 +9,7 @@ RCC.CortexFreq_Value=64000000
 I2C1.I2C_Speed_Mode=I2C_Fast_Plus
 ProjectManager.KeepUserCode=true
 Mcu.UserName=STM32G030F6Px
+TIM14.AutoReloadPreload=TIM_AUTORELOAD_PRELOAD_DISABLE
 ADC1.ContinuousConvMode=ENABLE
 Dma.ADC1.0.Polarity=HAL_DMAMUX_REQ_GEN_RISING
 PA12\ [PA10].Mode=I2C
@@ -38,7 +39,7 @@ SH.S_TIM3_CH2.ConfNb=1
 Mcu.ThirdPartyNb=0
 RCC.HCLKFreq_Value=64000000
 PA12\ [PA10].Signal=I2C2_SDA
-Mcu.IPNb=9
+Mcu.IPNb=10
 ProjectManager.PreviousToolchain=STM32CubeIDE
 I2C2.I2C_Speed_Mode=I2C_Fast
 TIM3.Period=PERIOD_VALUE
@@ -68,6 +69,7 @@ PA11\ [PA9].GPIOParameters=GPIO_Speed,GPIO_PuPdOD,PinState,GPIO_Mode
 PA4.Locked=true
 USART2.VirtualMode-Asynchronous=VM_ASYNC
 TIM3.OCFastMode_PWM-PWM\ Generation2\ CH2=TIM_OCFAST_ENABLE
+TIM14.Period=29999
 NVIC.SysTick_IRQn=true\:0\:0\:false\:false\:true\:false\:true
 PA4.GPIO_Speed=GPIO_SPEED_FREQ_VERY_HIGH
 PA12\ [PA10].GPIOParameters=GPIO_Speed,GPIO_PuPdOD,PinState,GPIO_Mode
@@ -113,7 +115,9 @@ PA5.GPIOParameters=GPIO_Speed,GPIO_PuPd,GPIO_Label
 RCC.PLLPoutputFreq_Value=64000000
 TIM3.Pulse-PWM\ Generation2\ CH2=PULSE_DEF_VALUE
 I2C2.GeneralCallMode=I2C_GENERALCALL_DISABLE
+VP_TIM14_VS_ClockSourceINT.Mode=Enable_Timer
 PA6.GPIO_Speed=GPIO_SPEED_FREQ_HIGH
+TIM14.IPParameters=Prescaler,Period,AutoReloadPreload
 I2C1.IPParametersWithoutCheck=OwnAddress
 Dma.Request0=ADC1
 PA4.GPIO_Label=TP_INT
@@ -123,13 +127,15 @@ PA3.Signal=USART2_RX
 PB7.GPIO_Speed=GPIO_SPEED_FREQ_HIGH
 PA2.Locked=true
 PA6.GPIOParameters=GPIO_Speed,PinState,GPIO_PuPd,GPIO_Label
+NVIC.TIM14_IRQn=true\:0\:0\:false\:false\:true\:true\:true
 ProjectManager.ProjectFileName=STM32G030F6_R2.ioc
 Dma.ADC1.0.Instance=DMA1_Channel1
 ADC1.Rank-0\#ChannelRegularConversion=1
 PA11\ [PA9].GPIO_Speed=GPIO_SPEED_FREQ_HIGH
 PA12\ [PA10].GPIO_Speed=GPIO_SPEED_FREQ_HIGH
 I2C2.I2C_Coeff_DF=0
-Mcu.PinsNb=16
+Mcu.PinsNb=17
+VP_TIM14_VS_ClockSourceINT.Signal=TIM14_VS_ClockSourceINT
 ProjectManager.NoMain=false
 Dma.ADC1.0.SyncRequestNumber=1
 ADC1.IPParameters=Rank-0\#ChannelRegularConversion,Channel-0\#ChannelRegularConversion,SamplingTime-0\#ChannelRegularConversion,NbrOfConversionFlag,master,SelectedChannel,Rank-1\#ChannelRegularConversion,Channel-1\#ChannelRegularConversion,SamplingTime-1\#ChannelRegularConversion,NbrOfConversion,ContinuousConvMode,DMAContinuousRequests
@@ -185,10 +191,12 @@ RCC.IPParameters=ADCFreq_Value,AHBFreq_Value,APBFreq_Value,APBTimFreq_Value,Cort
 ProjectManager.AskForMigrate=true
 PA11\ [PA9].Signal=I2C2_SCL
 Mcu.Name=STM32G030F6Px
+TIM14.Prescaler=39999
 PA2.Signal=USART2_TX
 ProjectManager.UnderRoot=true
 I2C1.OwnAddress=I2C_SLAVE_ADDR
-Mcu.IP8=USART2
+Mcu.IP8=TIM14
+Mcu.IP9=USART2
 Mcu.IP6=SYS
 Mcu.IP7=TIM3
 ProjectManager.CoupleFile=false
@@ -213,6 +221,7 @@ Dma.ADC1.0.MemInc=DMA_MINC_ENABLE
 ProjectManager.HeapSize=0x200
 Mcu.Pin15=VP_SYS_VS_Systick
 NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
+Mcu.Pin16=VP_TIM14_VS_ClockSourceINT
 Mcu.Pin13=PA14-BOOT0
 Mcu.Pin14=PB6
 ProjectManager.ComputerToolchain=false