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          STM32F407VG IO位操作

          作者: 時間:2016-11-25 來源:網(wǎng)絡(luò) 收藏
          1. #include
          2. #defineBITBAND(addr,bitnum)((addr&0xF0000000)+0x2000000+((addr&0xFFFFF)<<5)+(bitnum<<2))
          3. #defineMEM_ADDR(addr)*((volatileunsignedlong*)(addr))
          4. #defineBIT_ADDR(addr,bitnum)MEM_ADDR(BITBAND(addr,bitnum))
          5. //F4XXIO口地址映射
          6. #defineGPIOA_ODR_Addr(GPIOA_BASE+20)//0x40020014
          7. #defineGPIOB_ODR_Addr(GPIOB_BASE+20)//0x40020414
          8. #defineGPIOC_ODR_Addr(GPIOC_BASE+20)//0x40020814
          9. #defineGPIOD_ODR_Addr(GPIOD_BASE+20)//0x40020C14
          10. #defineGPIOE_ODR_Addr(GPIOE_BASE+20)//0x40021014
          11. #defineGPIOF_ODR_Addr(GPIOF_BASE+20)//0x40021414
          12. #defineGPIOG_ODR_Addr(GPIOG_BASE+20)//0x40021814
          13. #defineGPIOH_ODR_Addr(GPIOH_BASE+20)//0x40021C14
          14. #defineGPIOI_ODR_Addr(GPIOI_BASE+20)//0x40022014
          15. #defineGPIOA_IDR_Addr(GPIOA_BASE+16)//0x40020010
          16. #defineGPIOB_IDR_Addr(GPIOB_BASE+16)//0x40020410
          17. #defineGPIOC_IDR_Addr(GPIOC_BASE+16)//0x40020810
          18. #defineGPIOD_IDR_Addr(GPIOD_BASE+16)//0x40020C10
          19. #defineGPIOE_IDR_Addr(GPIOE_BASE+16)//0x40021010
          20. #defineGPIOF_IDR_Addr(GPIOF_BASE+16)//0x40021410
          21. #defineGPIOG_IDR_Addr(GPIOG_BASE+16)//0x40021810
          22. #defineGPIOH_IDR_Addr(GPIOF_BASE+16)//0x40021C10
          23. #defineGPIOI_IDR_Addr(GPIOG_BASE+16)//0x40022010
          24. //F4XXIO口操作,只對單一的IO,n的值范圍[0-15]
          25. #defineGPIOAout(n)BIT_ADDR(GPIOA_ODR_Addr,n)//GPIOA某一位輸出
          26. #defineGPIOAin(n)BIT_ADDR(GPIOA_IDR_Addr,n)//GPIOA某一位輸入
          27. #defineGPIOBout(n)BIT_ADDR(GPIOB_ODR_Addr,n)//GPIOB某一位輸出
          28. #defineGPIOBin(n)BIT_ADDR(GPIOB_IDR_Addr,n)//GPIOB某一位輸入
          29. #defineGPIOCout(n)BIT_ADDR(GPIOC_ODR_Addr,n)//GPIOC某一位輸出
          30. #defineGPIOCin(n)BIT_ADDR(GPIOC_IDR_Addr,n)//GPIOC某一位輸入
          31. #defineGPIODout(n)BIT_ADDR(GPIOD_ODR_Addr,n)//GPIOD某一位輸出
          32. #defineGPIODin(n)BIT_ADDR(GPIOD_IDR_Addr,n)//GPIOD某一位輸入
          33. #defineGPIOEout(n)BIT_ADDR(GPIOE_ODR_Addr,n)//GPIOE某一位輸出
          34. #defineGPIOEin(n)BIT_ADDR(GPIOE_IDR_Addr,n)//GPIOE某一位輸入
          35. #defineGPIOFout(n)BIT_ADDR(GPIOF_ODR_Addr,n)//GPIOF某一位輸出
          36. #defineGPIOFin(n)BIT_ADDR(GPIOF_IDR_Addr,n)//GPIOF某一位輸入
          37. #defineGPIOGout(n)BIT_ADDR(GPIOG_ODR_Addr,n)//GPIOG某一位輸出
          38. #defineGPIOGin(n)BIT_ADDR(GPIOG_IDR_Addr,n)//GPIOG某一位輸入
          39. #defineGPIOHout(n)BIT_ADDR(GPIOH_ODR_Addr,n)//GPIOH某一位輸出
          40. #defineGPIOHin(n)BIT_ADDR(GPIOH_IDR_Addr,n)//GPIOH某一位輸入
          41. #defineGPIOIout(n)BIT_ADDR(GPIOI_ODR_Addr,n)//GPIOI某一位輸出
          42. #defineGPIOIin(n)BIT_ADDR(GPIOI_IDR_Addr,n)//GPIOI某一位輸入
          43. #defineLED1GPIODout(12)//定義LED1GPIOD_Pin_12
          44. #defineLED2GPIODout(13)//定義LED1GPIOD_Pin_13
          45. #defineLED3GPIODout(14)//定義LED1GPIOD_Pin_14
          46. #defineLED4GPIODout(15)//定義LED1GPIOD_Pin_15
          47. #defineKEY1GPIOAin(0)//定義KEY1GPIOC_Pin_0
          48. uint32_tGb_TimingDelay;
          49. voidDelay(uint32_tnTime);
          50. voidLED_init(void);
          51. voidkey_init(void);
          52. voidkey_scan(void);
          53. intmain(void)
          54. {
          55. SysTick_Config(SystemCoreClock/1000);//設(shè)置systemtick一毫秒中斷
          56. RCC->APB2ENR|=(1<<14);//使能syscfg時鐘
          57. LED_init();
          58. key_init();
          59. //LED1=1;//LED燈亮
          60. while(1)
          61. {
          62. //流水燈
          63. LED1=!LED1;
          64. LED2=!LED2;
          65. LED3=!LED3;
          66. LED4=!LED4;
          67. Delay(1000);
          68. //按鍵掃描
          69. key_scan();
          70. }
          71. }
          72. voidLED_init(void)
          73. {
          74. RCC->AHB1ENR|=0x00000008;//使能GPIOD時鐘
          75. GPIOD->MODER&=0x00FFFFFF;//設(shè)置PD12,13,14,15輸出
          76. GPIOD->MODER|=0x55000000;
          77. GPIOD->OTYPER&=0xFFFF0FFF;//設(shè)置PD12,13,14,15推挽輸出
          78. GPIOD->OSPEEDR&=0x00FFFFFF;//PD12,13,14,15速度100m
          79. GPIOD->OSPEEDR|=0xff000000;
          80. SYSCFG->CMPCR=0x00000001;//使用IO補償單元,當(dāng)GPIO速度超過50M的時候要考慮使用此設(shè)置
          81. GPIOD->PUPDR&=0x00FFFFFF;//PD12,13,14,15無上拉無下拉
          82. }
          83. voidkey_init(void)
          84. {
          85. RCC->AHB1ENR|=0x00000001;//使能GPIOA時鐘
          86. GPIOA->MODER&=0xFFFFFFFC;//設(shè)置PA0輸入
          87. GPIOA->PUPDR&=0xFFFFFFFC;//設(shè)置PA0為下拉,因為PA0的輸入狀態(tài)為1
          88. GPIOA->PUPDR|=0x00000002;
          89. }
          90. voidkey_scan(void)
          91. {
          92. if(KEY1==1)//如果按鍵按下
          93. {
          94. Delay(10);//去抖
          95. if(KEY1==1)//如果按鍵按下
          96. {
          97. LED1=!LED1;//LED燈亮
          98. while(KEY1==1);//松手檢測
          99. }
          100. }
          101. }
          102. voidDelay(uint32_tnTime)
          103. {
          104. Gb_TimingDelay=nTime;
          105. while(Gb_TimingDelay!=0);
          106. }
          107. voidSysTick_Handler(void)
          108. {
          109. if(Gb_TimingDelay!=0x00)
          110. {
          111. Gb_TimingDelay--;
          112. }
          113. }

          本文引用地址:http://www.ex-cimer.com/article/201611/321486.htm

          說明:以上程序是在以下兩個資料下修改而成的。

          (1)“STM32F407VG用位帶別名區(qū)實現(xiàn)IO位操作例程”(楊年榮)http://wenku.baidu.com/view/4057a658804d2b160b4ec083.html

          (2)“stm32f407學(xué)習(xí)之四————GPIO(操作寄存器)” http://blog.csdn.net/w471176877/article/details/7957171




          關(guān)鍵詞: STM32F407VGIO位操

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