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worksheet7/newmain.c

+/******************************************************************************** 
+  * @file    GPIO/IOToggle/main.c 
+  * @author  MCD Application Team 
+  * @version V3.5.0 
+  * @date    08-April-2011 
+  * @brief   Main program body. 
+  ****************************************************************************** 
+  * @attention 
+  * 
+  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS 
+  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE 
+  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY 
+  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING 
+  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE 
+  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. 
+  * 
+  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2> 
+  ****************************************************************************** 
+  */ 
+
+/* Includes ------------------------------------------------------------------*/ 
+#include <stm32f10x.h> 
+#include <stm32f10x_rcc.h> 
+#include <stm32f10x_gpio.h>
+#include <stm32f10x_tim.h>
+#include <stm32f10x_rcc.h>
+#include <stm32f10x_exti.h>
+#include <misc.h> 
+
+
+/* Private variables ---------------------------------------------------------*/ 
+GPIO_InitTypeDef GPIO_InitStructure;
+static int yellowledval = 0;
+
+void configure_leds(void)
+{               
+  /* GPIOC/A Periph clock enable */ 
+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_GPIOC, ENABLE); 
+
+  /* Configure PC6 in output pushpull mode */ 
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; 
+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; 
+  GPIO_Init(GPIOC, &GPIO_InitStructure);  
+} 
+
+void configure_buttonsA(void)
+{
+  GPIO_InitTypeDef GPIO_InitStructure;
+  EXTI_InitTypeDef EXTI_InitStructure;
+  NVIC_InitTypeDef NVIC_InitStructure;
+
+  /* Initialise the GPIOA for button WKUP */
+  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_0;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
+  GPIO_Init( GPIOA, &GPIO_InitStructure );
+
+  /* Connect Button EXTI Line to Button GPIO Pin */
+  GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);
+
+  /*Configure Button EXTI line */
+  EXTI_InitStructure.EXTI_Line = EXTI_Line0;
+  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
+  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
+  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
+  EXTI_Init(&EXTI_InitStructure);
+
+  /* Configure interrupts for button */
+  NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
+  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
+  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
+  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
+  NVIC_Init( &NVIC_InitStructure );
+
+}
+
+void  EXTI0_IRQHandler()
+{
+
+   
+    if ( EXTI_GetITStatus(EXTI_Line0) == SET)
+    {
+  EXTI_ClearITPendingBit( EXTI_Line0 ); 
+  GPIO_WriteBit(GPIOC , GPIO_Pin_7 , (yellowledval) ? Bit_SET : Bit_RESET);
+  yellowledval = 1 - yellowledval;
+    }
+
+}
+int main(void) 
+{   
+  configure_leds();
+  configure_buttonsA();
+    
+  while (1) 
+  { 
+  } 
+} 
+
+#ifdef  USE_FULL_ASSERT 
+
+/** 
+  * @brief  Reports the name of the source file and the source line number 
+  *         where the assert_param error has occurred. 
+  * @param  file: pointer to the source file name 
+  * @param  line: assert_param error line source number 
+  * @retval None 
+  */ 
+void assert_failed(uint8_t* file, uint32_t line) 
+{ 
+  /* User can add his own implementation to report the file name and line number, 
+     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ 
+
+  /* Infinite loop */ 
+  while (1) 
+  { 
+  } 
+} 
+
+#endif