谷歌恐龙小游戏

（一）选择PB10与PB11 为高速输出模式，模拟I2C协议；

（二）选择PB6与PB7为输入，检测按键；

（三）其它平常配置；

添加工程文件 -> Game文件

添加头文件：

#include "stdlib.h"
#include "oled.h"
#include "dinogame.h"

/* USER CODE BEGIN PV */
int get_key_val()
{
    if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_6)== GPIO_PINSET)
    {
        HAL_Delay(50);
        if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_6)==GPIO_PIN_SET)
        {
        return 2;
        }
    }
    if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_7)==GPIO_PIN_SET)
    {
        HAL_Delay(50);
        if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_7)==GPIO_PIN_SET)
        {
        return 1;
        }
    }
    return 0;
}
/* USER CODE END PV */

变量：

/* USER CODE BEGIN 1 */
    unsigned char key_num = 0;
    unsigned char cactus_category = 0;
    unsigned char cactus_length = 8;
    unsigned int score = 0;
    unsigned int highest_score = 0;
    int height = 0;
    int cactus_pos = 128;
    unsigned char cur_speed = 30;
    char failed = 0;
    char reset = 0;
  /* USER CODE END 1 */

准备：

 /* USER CODE BEGIN 2 */
  OLED_Init();
  OLED_ShowString(0,0,"Test",4);
  /* USER CODE END 2 */
    OLED_DrawCover();
    while(get_key_val()!=2);
    HAL_Delay(100);
    OLED_Clear();
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */

主函数：

if (failed == 1)
        {
            OLED_DrawRestart();

            key_num = get_key_val();
            if (key_num == 2)
            {
                if(score > highest_score) highest_score = score;
                score = 0;
                failed = 0;
                height = 0;
                reset = 1;
                OLED_DrawDinoJump(reset);
                OLED_DrawCactusRandom(cactus_category, reset);
                OLED_Clear();
            }
            continue;
        }

        score ++;
        if (height <= 0) key_num = get_key_val();

        OLED_DrawGround();
        OLED_DrawCloud();

        if (height>0 || key_num == 1) height = OLED_DrawDinoJump(reset);
        else OLED_DrawDino();

        cactus_pos = OLED_DrawCactusRandom(cactus_category, reset);
        if(cactus_category == 0) cactus_length = 8;
        else if(cactus_category == 1) cactus_length = 16;
        else cactus_length = 24;

        if (cactus_pos + cactus_length < 0)
        {
          cactus_category = rand()%4;
            OLED_DrawCactusRandom(cactus_category, 1);
        }

        if ((height < 16) && ( (cactus_pos>=16 && cactus_pos <=32) || (cactus_pos + cactus_length>=16 && cactus_pos + cactus_length <=32)))
        {
            failed = 1;
        }

        OLED_ShowString(0, 0, "I LOVE China", 12);
        //OLED_ShowNum(58, 0, highest_score, 5, 12);
        OLED_ShowNum(98, 0, score, 5, 12);

        reset = 0;

        cur_speed = score/20;
        if (cur_speed > 29) cur_speed = 29;
        HAL_Delay(30 - cur_speed);
        //    HAL_Delay(500);
        key_num = 0;

（四）将OLED与按键接好即可。（按键接3.3V）