From: AceVest <zhaoyanbai@126.com>
Date: Wed, 5 Jun 2019 02:59:33 +0000 (+0800)
Subject: F103RE GPIO Input Interrupt
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/zlib_tech.html?a=commitdiff_plain;h=e85b9cccc27ef2c1689483b283321057db826ab6;p=acecode.git

F103RE GPIO Input Interrupt
---

diff --git a/learn/stm32/F103RE/F103RE.ioc b/learn/stm32/F103RE/F103RE.ioc
index 81c7f01..55aec6f 100644
--- a/learn/stm32/F103RE/F103RE.ioc
+++ b/learn/stm32/F103RE/F103RE.ioc
@@ -26,11 +26,12 @@ MxCube.Version=5.2.0
 MxDb.Version=DB.5.0.20
 NVIC.BusFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 NVIC.DebugMonitor_IRQn=true\:0\:0\:false\:false\:true\:false\:false
+NVIC.EXTI0_IRQn=true\:0\:0\:false\:false\:true\:true\:true
 NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 NVIC.MemoryManagement_IRQn=true\:0\:0\:true\:false\:true\:false\:false
 NVIC.NonMaskableInt_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 NVIC.PendSV_IRQn=true\:0\:0\:false\:false\:true\:false\:false
-NVIC.PriorityGroup=NVIC_PRIORITYGROUP_4
+NVIC.PriorityGroup=NVIC_PRIORITYGROUP_2
 NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 NVIC.SysTick_IRQn=true\:0\:0\:false\:false\:true\:false\:true
 NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
@@ -60,10 +61,11 @@ PA7.GPIO_ModeDefaultOutputPP=GPIO_MODE_OUTPUT_PP
 PA7.GPIO_Speed=GPIO_SPEED_FREQ_HIGH
 PA7.Locked=true
 PA7.Signal=GPIO_Output
-PC0.GPIOParameters=GPIO_Label
+PC0.GPIOParameters=GPIO_Label,GPIO_ModeDefaultEXTI
 PC0.GPIO_Label=KEY1
+PC0.GPIO_ModeDefaultEXTI=GPIO_MODE_IT_FALLING
 PC0.Locked=true
-PC0.Signal=GPIO_Input
+PC0.Signal=GPXTI0
 PCC.Checker=false
 PCC.Line=STM32F103
 PCC.MCU=STM32F103R(C-D-E)Tx
@@ -130,6 +132,8 @@ RCC.SYSCLKSource=RCC_SYSCLKSOURCE_PLLCLK
 RCC.TimSysFreq_Value=72000000
 RCC.USBFreq_Value=72000000
 RCC.VCOOutput2Freq_Value=12000000
+SH.GPXTI0.0=GPIO_EXTI0
+SH.GPXTI0.ConfNb=1
 VP_SYS_VS_Systick.Mode=SysTick
 VP_SYS_VS_Systick.Signal=SYS_VS_Systick
 board=custom
diff --git a/learn/stm32/F103RE/Inc/main.h b/learn/stm32/F103RE/Inc/main.h
index db628f8..c4b327b 100644
--- a/learn/stm32/F103RE/Inc/main.h
+++ b/learn/stm32/F103RE/Inc/main.h
@@ -60,6 +60,7 @@ void Error_Handler(void);
 /* Private defines -----------------------------------------------------------*/
 #define KEY1_Pin GPIO_PIN_0
 #define KEY1_GPIO_Port GPIOC
+#define KEY1_EXTI_IRQn EXTI0_IRQn
 #define LED1_Pin GPIO_PIN_4
 #define LED1_GPIO_Port GPIOA
 #define LED2_Pin GPIO_PIN_5
diff --git a/learn/stm32/F103RE/Inc/stm32f1xx_it.h b/learn/stm32/F103RE/Inc/stm32f1xx_it.h
index 9d4af17..f90bf1e 100644
--- a/learn/stm32/F103RE/Inc/stm32f1xx_it.h
+++ b/learn/stm32/F103RE/Inc/stm32f1xx_it.h
@@ -56,6 +56,7 @@ void SVC_Handler(void);
 void DebugMon_Handler(void);
 void PendSV_Handler(void);
 void SysTick_Handler(void);
+void EXTI0_IRQHandler(void);
 /* USER CODE BEGIN EFP */
 
 /* USER CODE END EFP */
diff --git a/learn/stm32/F103RE/Src/gpio.c b/learn/stm32/F103RE/Src/gpio.c
index 007b707..27bf981 100644
--- a/learn/stm32/F103RE/Src/gpio.c
+++ b/learn/stm32/F103RE/Src/gpio.c
@@ -52,7 +52,7 @@ void MX_GPIO_Init(void)
 
   /*Configure GPIO pin : PtPin */
   GPIO_InitStruct.Pin = KEY1_Pin;
-  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+  GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
   GPIO_InitStruct.Pull = GPIO_NOPULL;
   HAL_GPIO_Init(KEY1_GPIO_Port, &GPIO_InitStruct);
 
@@ -63,10 +63,16 @@ void MX_GPIO_Init(void)
   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
+  /* EXTI interrupt init*/
+  HAL_NVIC_SetPriority(EXTI0_IRQn, 0, 0);
+  HAL_NVIC_EnableIRQ(EXTI0_IRQn);
+
 }
 
 /* USER CODE BEGIN 2 */
-
+void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) {
+	HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin, SET);
+}
 /* USER CODE END 2 */
 
 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/learn/stm32/F103RE/Src/main.c b/learn/stm32/F103RE/Src/main.c
index 4555c88..413a15d 100644
--- a/learn/stm32/F103RE/Src/main.c
+++ b/learn/stm32/F103RE/Src/main.c
@@ -96,7 +96,7 @@ int main(void)
   /* USER CODE BEGIN WHILE */
   while (1)
   {
-	  HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);
+	  HAL_GPIO_TogglePin(LED2_GPIO_Port, LED2_Pin);
 	  HAL_Delay(100);
     /* USER CODE END WHILE */
 
diff --git a/learn/stm32/F103RE/Src/stm32f1xx_hal_msp.c b/learn/stm32/F103RE/Src/stm32f1xx_hal_msp.c
index f15a06a..60814ca 100644
--- a/learn/stm32/F103RE/Src/stm32f1xx_hal_msp.c
+++ b/learn/stm32/F103RE/Src/stm32f1xx_hal_msp.c
@@ -70,6 +70,8 @@ void HAL_MspInit(void)
   __HAL_RCC_AFIO_CLK_ENABLE();
   __HAL_RCC_PWR_CLK_ENABLE();
 
+  HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_2);
+
   /* System interrupt init*/
 
   /** NOJTAG: JTAG-DP Disabled and SW-DP Enabled 
diff --git a/learn/stm32/F103RE/Src/stm32f1xx_it.c b/learn/stm32/F103RE/Src/stm32f1xx_it.c
index b770208..115e832 100644
--- a/learn/stm32/F103RE/Src/stm32f1xx_it.c
+++ b/learn/stm32/F103RE/Src/stm32f1xx_it.c
@@ -197,6 +197,20 @@ void SysTick_Handler(void)
 /* please refer to the startup file (startup_stm32f1xx.s).                    */
 /******************************************************************************/
 
+/**
+  * @brief This function handles EXTI line0 interrupt.
+  */
+void EXTI0_IRQHandler(void)
+{
+  /* USER CODE BEGIN EXTI0_IRQn 0 */
+
+  /* USER CODE END EXTI0_IRQn 0 */
+  HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0);
+  /* USER CODE BEGIN EXTI0_IRQn 1 */
+
+  /* USER CODE END EXTI0_IRQn 1 */
+}
+
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */