#define LCD_AC_UP 0x02 #define LCD_AC_DOWN 0x00 // default #define LCD_MOVE 0x01 // 画面可平移 #define LCD_NO_MOVE 0x00 //default void LCD_SetInput(unsigned char InputMode) { LCD_Write(LCD_COMMAND, 0x04|InputMode); }

这段代码是关于LCD控制器的一些定义和函数的实现。具体来说，它定义了一些常量，如LCD_AC_UP和LCD_AC_DOWN，用于控制液晶屏的方向，以及LCD_MOVE和LCD_NO_MOVE，用于控制画面是否可平移。此外，该代码还实现了一个名为LCD_SetInput的函数，该函数用于设置LCD输入模式，其实现方式是通过调用LCD_Write函数向LCD控制器写入相应的命令和参数。需要注意的是，该代码并未提供LCD_Write函数的实现，因此无法确定具体的实现细节。

相关问题

stm32f10x_gpio.h代码

以下是`stm32f10x_gpio.h`的代码：

/**
  ******************************************************************************
  * @file    stm32f10x_gpio.h
  * @author  MCD Application Team
  * @version V3.5.0
  * @date    09-March-2012
  * @brief   This file contains all the functions prototypes for the GPIO 
  *          firmware library.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); You 
  * may not use this file except in compliance with the License. You may obtain 
  * a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 
  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 
  * License for the specific language governing permissions and limitations 
  * under the License.
  *
  ******************************************************************************
  */ 


/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F10x_GPIO_H
#define __STM32F10x_GPIO_H

#ifdef __cplusplus
 extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"

/** @addtogroup STM32F10x_StdPeriph_Driver
  * @{
  */

/** @addtogroup GPIO
  * @{
  */ 


/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/

/** @defgroup GPIO_Exported_Constants
  * @{
  */ 

/** @defgroup GPIO_pins_define 
  * @{
  */ 
#define GPIO_Pin_0                 ((uint16_t)0x0001)  /*!< Pin 0 selected */
#define GPIO_Pin_1                 ((uint16_t)0x0002)  /*!< Pin 1 selected */
#define GPIO_Pin_2                 ((uint16_t)0x0004)  /*!< Pin 2 selected */
#define GPIO_Pin_3                 ((uint16_t)0x0008)  /*!< Pin 3 selected */
#define GPIO_Pin_4                 ((uint16_t)0x0010)  /*!< Pin 4 selected */
#define GPIO_Pin_5                 ((uint16_t)0x0020)  /*!< Pin 5 selected */
#define GPIO_Pin_6                 ((uint16_t)0x0040)  /*!< Pin 6 selected */
#define GPIO_Pin_7                 ((uint16_t)0x0080)  /*!< Pin 7 selected */
#define GPIO_Pin_8                 ((uint16_t)0x0100)  /*!< Pin 8 selected */
#define GPIO_Pin_9                 ((uint16_t)0x0200)  /*!< Pin 9 selected */
#define GPIO_Pin_10                ((uint16_t)0x0400)  /*!< Pin 10 selected */
#define GPIO_Pin_11                ((uint16_t)0x0800)  /*!< Pin 11 selected */
#define GPIO_Pin_12                ((uint16_t)0x1000)  /*!< Pin 12 selected */
#define GPIO_Pin_13                ((uint16_t)0x2000)  /*!< Pin 13 selected */
#define GPIO_Pin_14                ((uint16_t)0x4000)  /*!< Pin 14 selected */
#define GPIO_Pin_15                ((uint16_t)0x8000)  /*!< Pin 15 selected */
#define GPIO_Pin_All               ((uint16_t)0xFFFF)  /*!< All pins selected */

/**
  * @}
  */ 

/** @defgroup GPIO_Speed_Legacy 
  * @{
  */
#define GPIO_Speed_10MHz           GPIO_Speed_Level_1   /*!< I/O output speed: Low 2 MHz */
#define GPIO_Speed_2MHz            GPIO_Speed_Level_2   /*!< I/O output speed: Medium 10 MHz */
#define GPIO_Speed_50MHz           GPIO_Speed_Level_3   /*!< I/O output speed: Fast 50 MHz */

/**
  * @}
  */ 

/** @defgroup GPIO_Mode_define 
  * @{
  */ 
#define GPIO_Mode_AIN              ((uint32_t)0x00000000) /*!< Analog mode */
#define GPIO_Mode_IN_FLOATING      ((uint32_t)0x04)  /*!< Input floating mode */
#define GPIO_Mode_IPD              ((uint32_t)0x28)  /*!< Input pull-down mode */
#define GPIO_Mode_IPU              ((uint32_t)0x48)  /*!< Input pull-up mode */
#define GPIO_Mode_Out_OD           ((uint32_t)0x14)  /*!< Output open-drain mode */
#define GPIO_Mode_Out_PP           ((uint32_t)0x10)  /*!< Output push-pull mode */
#define GPIO_Mode_AF_OD            ((uint32_t)0x1C)  /*!< Alternate function output open-drain mode */
#define GPIO_Mode_AF_PP            ((uint32_t)0x18)  /*!< Alternate function output push-pull mode */

/**
  * @}
  */ 

/** @defgroup GPIO_OType_define 
  * @{
  */ 
#define GPIO_OType_PP              ((uint16_t)0x0000)  /*!< Output push-pull */
#define GPIO_OType_OD              ((uint16_t)0x0010)  /*!< Output open-drain */

/**
  * @}
  */ 

/** @defgroup GPIO_PuPd_define 
  * @{
  */ 
#define GPIO_PuPd_NOPULL           ((uint32_t)0x00000000) /*!< No pull-up or pull-down */
#define GPIO_PuPd_UP               ((uint32_t)0x08)  /*!< Pull-up */
#define GPIO_PuPd_DOWN             ((uint32_t)0x18) /*!< Pull-down */

/**
  * @}
  */ 

/** @defgroup GPIO_Pin_sources 
  * @{
  */ 
#define GPIO_PinSource0            ((uint8_t)0x00)
#define GPIO_PinSource1            ((uint8_t)0x01)
#define GPIO_PinSource2            ((uint8_t)0x02)
#define GPIO_PinSource3            ((uint8_t)0x03)
#define GPIO_PinSource4            ((uint8_t)0x04)
#define GPIO_PinSource5            ((uint8_t)0x05)
#define GPIO_PinSource6            ((uint8_t)0x06)
#define GPIO_PinSource7            ((uint8_t)0x07)
#define GPIO_PinSource8            ((uint8_t)0x08)
#define GPIO_PinSource9            ((uint8_t)0x09)
#define GPIO_PinSource10           ((uint8_t)0x0A)
#define GPIO_PinSource11           ((uint8_t)0x0B)
#define GPIO_PinSource12           ((uint8_t)0x0C)
#define GPIO_PinSource13           ((uint8_t)0x0D)
#define GPIO_PinSource14           ((uint8_t)0x0E)
#define GPIO_PinSource15           ((uint8_t)0x0F)

/**
  * @}
  */ 

/** @defgroup GPIO_Alternate_function_selection_define 
  * @{
  */ 
#define GPIO_AF_0                 ((uint8_t)0x00) /*!< Alternate function 0 */
#define GPIO_AF_1                 ((uint8_t)0x01) /*!< Alternate function 1 */
#define GPIO_AF_2                 ((uint8_t)0x02) /*!< Alternate function 2 */
#define GPIO_AF_3                 ((uint8_t)0x03) /*!< Alternate function 3 */
#define GPIO_AF_4                 ((uint8_t)0x04) /*!< Alternate function 4 */
#define GPIO_AF_5                 ((uint8_t)0x05) /*!< Alternate function 5 */
#define GPIO_AF_6                 ((uint8_t)0x06) /*!< Alternate function 6 */
#define GPIO_AF_7                 ((uint8_t)0x07) /*!< Alternate function 7 */
#define GPIO_AF_8                 ((uint8_t)0x08) /*!< Alternate function 8 */
#define GPIO_AF_9                 ((uint8_t)0x09) /*!< Alternate function 9 */
#define GPIO_AF_10                ((uint8_t)0x0A) /*!< Alternate function 10 */
#define GPIO_AF_11                ((uint8_t)0x0B) /*!< Alternate function 11 */
#define GPIO_AF_12                ((uint8_t)0x0C) /*!< Alternate function 12 */
#define GPIO_AF_13                ((uint8_t)0x0D) /*!< Alternate function 13 */
#define GPIO_AF_14                ((uint8_t)0x0E) /*!< Alternate function 14 */
#define GPIO_AF_15                ((uint8_t)0x0F) /*!< Alternate function 15 */

/**
  * @}
  */ 

/** @defgroup GPIO_interrupt_sources 
  * @{
  */ 
#define GPIO_IT_Edge               ((uint16_t)0x0001)  /*!< Interrupt mode is enabled on rising edge */
#define GPIO_IT_Rising             ((uint16_t)0x0002)  /*!< Interrupt mode is enabled on rising edge */
#define GPIO_IT_Falling            ((uint16_t)0x0004)  /*!< Interrupt mode is enabled on falling edge */
#define GPIO_IT_High               ((uint16_t)0x0008)  /*!< Interrupt mode is enabled on high level */
#define GPIO_IT_Low                ((uint16_t)0x0010)  /*!< Interrupt mode is enabled on low level */
#define GPIO_IT_Port_Source        ((uint16_t)0x0020)  /*!< Interrupt mode is enabled on pin event */

/**
  * @}
  */ 

/** @defgroup GPIO_Legacy 
  * @{
  */
#define GPIO_Mode_Out_Slow         GPIO_Mode_Out_PP    
#define GPIO_Mode_In_Floating      GPIO_Mode_IN_FLOATING
#define GPIO_Mode_In_PU            GPIO_Mode_IPU
#define GPIO_Mode_In_PD            GPIO_Mode_IPD
#define GPIO_Mode_Out_OD           GPIO_Mode_Out_OD    
#define GPIO_Mode_Af_OD            GPIO_Mode_AF_OD     
#define GPIO_Mode_Af_PP            GPIO_Mode_AF_PP     

/**
  * @}
  */ 

/**
  * @}
  */ 

/* Exported macro ------------------------------------------------------------*/
/* Exported functions ------------------------------------------------------- */ 

/*  Function used to set the GPIO configuration to the default reset state ****/
void GPIO_DeInit(GPIO_TypeDef* GPIOx);

/* Initialization and Configuration functions *********************************/
void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct);
void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct);
void GPIO_PinLockConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin);

/* GPIO Read and Write functions **********************************************/
uint8_t GPIO_ReadInputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin);
uint16_t GPIO_ReadInputData(GPIO_TypeDef* GPIOx);
uint8_t GPIO_ReadOutputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin);
uint16_t GPIO_ReadOutputData(GPIO_TypeDef* GPIOx);
void GPIO_SetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin);
void GPIO_ResetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin);
void GPIO_WriteBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, BitAction BitVal);
void GPIO_Write(GPIO_TypeDef* GPIOx, uint16_t PortVal);

/* GPIO Alternate functions configuration functions ***************************/
void GPIO_PinAFConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_PinSource, uint8_t GPIO_AF);

/* GPIO Interrupts configuration functions ************************************/
void GPIO_ITConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, FunctionalState NewState);
void GPIO_EXTILineConfig(uint8_t GPIO_PortSource, uint8_t GPIO_PinSource);

/* GPIO Low Level Interrupt management ***************************************/
void GPIO_SetInterrupt(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, Exti_TypeDef PortSource);
void GPIO_ClearInterrupt(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin);

#ifdef __cplusplus
}
#endif

#endif /* __STM32F10x_GPIO_H */

/**
  * @}
  */ 

/**
  * @}
  */ 

/******************* (C) COPYRIGHT 2012 STMicroelectronics *****END OF FILE****/

工作环境为#include "stdAfx.h" #include "circle.h" /*以下常量定义鼠标状态，目前之后两个状态，分别是鼠标左键被按下， 和默认正常状态，没有任何按键被按下 */ #define MOUSE_LEFT_BUTTION_DOWN 0X0001 //定义鼠标状 #define MOUSE_NORMAL 0x0000 //定义鼠标状态 int mouse_state = MOUSE_NORMAL; //定义2维空间内的点（x,y) typedef struct Point2D { int x; int y; }Point2D; //定义鼠标开始位置和结束位置 Point2D mouseStartPos,mouseEndPos; //定义显示函数 void display() { glClearColor(1.0f,1.0f,1.0f,0.0f); glClear(GL_COLOR_BUFFER_BIT); printf("%d\n",mouse_state); if(mouse_state == MOUSE_LEFT_BUTTION_DOWN) { float r = sqrt((mouseEndPos.x-mouseStartPos.x)*(mouseEndPos.x-mouseStartPos.x) + (mouseEndPos.y-mouseStartPos.y)*(mouseEndPos.y-mouseStartPos.y)); drawCircleBresenham(mouseStartPos.x,mouseStartPos.y,r); } glFlush(); printf("call display\n"); } //鼠标处理函数 void mouseHandler(int button,int state,int x,int y) { switch(button) { case GLUT_LEFT_BUTTON: switch(state) { case GLUT_UP: mouse_state = MOUSE_NORMAL; break; case GLUT_DOWN: printf("mosue down\n"); mouseStartPos.x = x; //记录鼠标开始位置 mouseStartPos.y = y; mouse_state = MOUSE_LEFT_BUTTION_DOWN; break; default: break; } break; case GLUT_RIGHT_BUTTON: break; case GLUT_MIDDLE_BUTTON: break; default: break; } } //鼠标按下并且移动时候，调用此函数 void mouseMotionHandler(int x,int y) { //记录鼠标结束位置 mouseEndPos.x = x; mouseEndPos.y = y; if(mouse_state == MOUSE_LEFT_BUTTION_DOWN) { float r = sqrt((mouseEndPos.x-mouseStartPos.x)*(mouseEndPos.x-mouseStartPos.x) + (mouseEndPos.y-mouseStartPos.y)*(mouseEndPos.y-mouseStartPos.y)); drawCircleBresenham(mouseStartPos.x,mouseStartPos.y,r); } } void main () { glutInitDisplayMode(GLUT_RGB|GLUT_SINGLE); glutInitWindowPosition(600,400); glutInitWindowSize(400,400); glutCreateWindow("OpenGL"); glutDisplayFunc(display); //设置显示函数 glutMouseFunc(mouseHandler); //设置鼠标处理函数 glutMotionFunc(mouseMotionHandler);//当鼠标按下并移动时候，会调用此函数 gluOrtho2D(0.0f,400.0f,400.0f,0.0f); glutMainLoop(); }

这段代码是用 OpenGL 实现的一个画圆程序，可以通过鼠标左键按下并拖动来画圆。其中用到了 Bresenham 算法来绘制圆。代码中定义了鼠标状态常量和结构体来记录鼠标位置，以及鼠标处理函数和鼠标移动处理函数来处理鼠标事件。在主函数中，设置了显示函数、鼠标处理函数和鼠标移动处理函数，并使用 gluOrtho2D 函数设置了视口大小。最后通过调用 glutMainLoop 函数进入事件循环，等待用户输入。