gpio_in.c

STM32GPIO输入功能

/*

                         \\\|///
                       \\  - -  //
                        (  @ @  )
+---------------------oOOo-(_)-oOOo-------------------------+
|                 智林STM32开发板试验程序                   |
|                 Timer2 PWM 输出方式试验                   |
|                 刘笑然 by Xiaoran Liu                     |
|                        2008.4.16                          |
|                                                           |
|           智林测控技术研究所 ZERO research group          |
|                      www.the0.net                         |
|                             Oooo                          |
+-----------------------oooO--(   )-------------------------+
                       (   )   ) /
                        \ (   (_/
                         \_)     

*/
/*----------------------------------------------------------*\
 |  引入相关芯片的头文件                                    |
\*----------------------------------------------------------*/
#include <stm32f10x_lib.h>    // STM32F10x Library Definitions
#include "STM32_Init.h"       // STM32 Initialization
#include "TFT018.h"
/*----------------------------------------------------------*\
 | HARDWARE DEFINE                                          |
\*----------------------------------------------------------*/
#define LED             ( 1 << 5 )              // PB5: LED D2

#define BP2             0x2000                     // PC13: BP2
#define BP3             0x0001                     // PA0 : BP3

#define UP              0x0800                     // PB11: UP
#define RIGHT           0x1000                     // PB12: RIGHT
#define LEFT            0x2000                     // PB13: LEFT
#define DOWN            0x4000                     // PB14: DOWN
#define OK              0x8000                     // PB15: OK

#define JOYSTICK        0xF800                     // JOYSTICK ALL KEYS
/*----------------------------------------------------------*\
 | SOFTWARE DATA                                            |
\*----------------------------------------------------------*/
/*----------------------------------------------------------*\
 |  Delay                                                   |
 |  延时 Inserts a delay time.                              |
 |  nCount: 延时时间                                        |
 |  nCount: specifies the delay time length.                |
\*----------------------------------------------------------*/
void Delay(vu32 nCount) {
  for(; nCount != 0; nCount--);
  }
/*----------------------------------------------------------*\
 | MIAN ENTRY                                               |
\*----------------------------------------------------------*/
int main (void) {
  stm32_Init ();                                // STM32 setup
  LCD_Init();
  LCD_Clear_Screen(Blue);
  for(;;) {
    Font = 0;
    LCD_PutString(30,0,"STM32F 开发板",Cyan,Blue);
    LCD_PutString(30,16,"GPIO 输入演示",Red,Yellow);
    Font = 1;
    LCD_PutString(38,32,"Version 1.0",Green,Blue);
    Font = 0;
    LCD_PutString(10,94,"智林测控技术研究所",Yellow,Blue);
    LCD_PutString(36,111,"www.the0.net",Magenta,Blue);

    if (((GPIOB->IDR & JOYSTICK) == JOYSTICK ))  {   // Check if JOYSTICK key is pressed
      GPIOB->ODR &= ~LED;                         // switch off LED
      }
	else  {                                       // JOYSTICK key is pressed
      GPIOB->ODR |=  LED;                         // switch on LED
	  }

    if (((GPIOB->IDR & UP) == 0 ))              // Check if UP is pressed
      LCD_PutString(48,40,"上",Yellow,Red);
    else
      LCD_PutString(48,40,"上",Red,Yellow);
    if (((GPIOB->IDR & DOWN) == 0 ))            // Check if DOWN is pressed
      LCD_PutString(48,76,"下",Yellow,Red);
	else
      LCD_PutString(48,76,"下",Red,Yellow);
    if (((GPIOB->IDR & LEFT) == 0 ))            // Check if LEFT is pressed
	  LCD_PutString(30,58,"左",Yellow,Red);
	else
	  LCD_PutString(30,58,"左",Red,Yellow);
    if (((GPIOB->IDR & RIGHT) == 0 ))           // Check if RIGHT is pressed
      LCD_PutString(66,58,"右",Yellow,Red);
	else
      LCD_PutString(66,58,"右",Red,Yellow);
    if (((GPIOB->IDR & OK) == 0 ))              // Check if OK is pressed
      LCD_PutString(48,58,"OK",Yellow,Red);
	else
      LCD_PutString(48,58,"OK",Red,Yellow);


    if (((GPIOC->IDR & BP2) == 0 ))            // Check if BP2 is not pressed
      LCD_PutString(100,40,"BP2",Yellow,Red);
	else
      LCD_PutString(100,40,"BP2",Red,Yellow);
    if (((GPIOA->IDR & BP3) == 0 ))            // Check if BP3 is not pressed
      LCD_PutString(100,76,"BP3",Yellow,Red);
	else
      LCD_PutString(100,76,"BP3",Red,Yellow);
    }
  }
/*----------------------------------------------------------*\
 | END OF FILE                                              |
\*----------------------------------------------------------*/