From d1b0ed0858fa790685e06583a12b428cdabfa4d6 Mon Sep 17 00:00:00 2001
From: vanyabeat <vanyabeat@protonmail.com>
Date: Wed, 17 Jan 2024 17:51:08 +0300
Subject: [PATCH] ADD: tim3_semaphore and blink LED2 every 200us

---
 Inc/main.h         |  4 +++-
 Inc/tim.h          |  2 +-
 Src/main.c         |  6 +++++-
 Src/stm32f4xx_it.c | 13 ++++++++++---
 Src/tim.c          |  2 +-
 5 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/Inc/main.h b/Inc/main.h
index 72043d1..399ce90 100644
--- a/Inc/main.h
+++ b/Inc/main.h
@@ -88,7 +88,9 @@ void Error_Handler(void);
 #define spi1_cs_Pin LL_GPIO_PIN_2
 #define spi1_cs_GPIO_Port GPIOD
 /* USER CODE BEGIN Private defines */
-
+typedef int bool;
+#define true 1
+#define false 0
 /* USER CODE END Private defines */
 
 #ifdef __cplusplus
diff --git a/Inc/tim.h b/Inc/tim.h
index fd5cc1f..707c931 100644
--- a/Inc/tim.h
+++ b/Inc/tim.h
@@ -33,7 +33,7 @@ extern "C" {
 /* USER CODE END Includes */
 
 extern TIM_HandleTypeDef htim3;
-
+extern volatile bool tim3_semaphore;
 /* USER CODE BEGIN Private defines */
 
 /* USER CODE END Private defines */
diff --git a/Src/main.c b/Src/main.c
index 9509bcc..7a55284 100644
--- a/Src/main.c
+++ b/Src/main.c
@@ -114,7 +114,11 @@ int main(void)
   while (1)
   {
     /* USER CODE END WHILE */
-
+    if (tim3_semaphore)
+    {
+      tim3_semaphore = false;
+      HAL_GPIO_TogglePin(LED2_GPIO_Port, LED2_Pin);
+    }
     /* USER CODE BEGIN 3 */
   }
   /* USER CODE END 3 */
diff --git a/Src/stm32f4xx_it.c b/Src/stm32f4xx_it.c
index 9be4b36..9c5172b 100644
--- a/Src/stm32f4xx_it.c
+++ b/Src/stm32f4xx_it.c
@@ -56,7 +56,7 @@
 
 /* External variables --------------------------------------------------------*/
 extern TIM_HandleTypeDef htim3;
-extern int tim3_semaphore;
+extern bool tim3_semaphore;
 /* USER CODE BEGIN EV */
 
 /* USER CODE END EV */
@@ -261,8 +261,15 @@ void TIM3_IRQHandler(void)
   /* USER CODE BEGIN TIM3_IRQn 0 */
   // BLink Led1
 
-  HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);
-  /* USER CODE END TIM3_IRQn 0 */
+ HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);
+ if (__HAL_TIM_GET_FLAG(&htim3, TIM_FLAG_UPDATE) != RESET)
+    {
+        if (__HAL_TIM_GET_IT_SOURCE(&htim3, TIM_IT_UPDATE) != RESET)
+        {
+            __HAL_TIM_CLEAR_IT(&htim3, TIM_IT_UPDATE);
+            tim3_semaphore = true;
+        }
+    }
   HAL_TIM_IRQHandler(&htim3);
   /* USER CODE BEGIN TIM3_IRQn 1 */
 
diff --git a/Src/tim.c b/Src/tim.c
index eba240b..3368007 100644
--- a/Src/tim.c
+++ b/Src/tim.c
@@ -25,7 +25,7 @@
 /* USER CODE END 0 */
 
 TIM_HandleTypeDef htim3;
-
+volatile bool tim3_semaphore;
 /* TIM1 init function */
 void MX_TIM1_Init(void)
 {