使用STM32F103xC8T6板，用keil5编码，在oled屏上实现俄罗斯方块游戏，请给出具体代码

好的，下面给出一个简单的在OLED屏幕上实现俄罗斯方块游戏的示例代码。请注意，这只是一个简单的实现，还有很多地方可以进行优化。

首先，需要使用OLED屏幕和按键。可以使用一个二维数组来表示俄罗斯方块的状态，使用一个定时器不断更新方块的状态并在屏幕上显示。

#include "oled.h"
#include "key.h"

// 定义方块的大小和行列数
#define BLOCK_SIZE 8
#define ROWS 8
#define COLS 8

// 定义方块的类型
typedef enum {
    BLOCK_NONE,
    BLOCK_I,
    BLOCK_O,
    BLOCK_T,
    BLOCK_S,
    BLOCK_Z,
    BLOCK_J,
    BLOCK_L
} BlockType;

// 定义方块结构体
typedef struct {
    BlockType type;
    int row;
    int col;
} Block;

// 定义俄罗斯方块结构体
typedef struct {
    Block block;
    int rotate;
} Tetris;

// 定义方块的颜色
uint8_t block_colors[] = {
    0x00, // BLACK
    0xFF, // WHITE
    0xFF, // WHITE
    0xFF, // WHITE
    0xFF, // WHITE
    0xFF, // WHITE
    0xFF, // WHITE
    0xFF  // WHITE
};

// 定义方块的形状
int block_shapes[][4][4] = {
    { // BLOCK_NONE
        {0, 0, 0, 0},
        {0, 0, 0, 0},
        {0, 0, 0, 0},
        {0, 0, 0, 0}
    },
    { // BLOCK_I
        {0, 0, 0, 0},
        {1, 1, 1, 1},
        {0, 0, 0, 0},
        {0, 0, 0, 0}
    },
    { // BLOCK_O
        {1, 1, 0, 0},
        {1, 1, 0, 0},
        {0, 0, 0, 0},
        {0, 0, 0, 0}
    },
    { // BLOCK_T
        {0, 1, 0, 0},
        {1, 1, 1, 0},
        {0, 0, 0, 0},
        {0, 0, 0, 0}
    },
    { // BLOCK_S
        {0, 1, 1, 0},
        {1, 1, 0, 0},
        {0, 0, 0, 0},
        {0, 0, 0, 0}
    },
    { // BLOCK_Z
        {1, 1, 0, 0},
        {0, 1, 1, 0},
        {0, 0, 0, 0},
        {0, 0, 0, 0}
    },
    { // BLOCK_J
        {1, 0, 0, 0},
        {1, 1, 1, 0},
        {0, 0, 0, 0},
        {0, 0, 0, 0}
    },
    { // BLOCK_L
        {0, 0, 1, 0},
        {1, 1, 1, 0},
        {0, 0, 0, 0},
        {0, 0, 0, 0}
    }
};

// 定义俄罗斯方块结构体
Tetris tetris;

// 初始化OLED屏幕和按键
void init_hardware(void) {
    OLED_Init();
    Key_Init();
}

// 绘制一个方块
void draw_block(int row, int col, uint8_t color) {
    for (int i = 0; i < BLOCK_SIZE; i++) {
        for (int j = 0; j < BLOCK_SIZE; j++) {
            OLED_DrawPixel(col * BLOCK_SIZE + j, row * BLOCK_SIZE + i, color);
        }
    }
}

// 绘制俄罗斯方块
void draw_tetris(Tetris tetris) {
    int shape = tetris.block.type;
    int rotate = tetris.rotate;
    int row = tetris.block.row;
    int col = tetris.block.col;
    for (int i = 0; i < 4; i++) {
        for (int j = 0; j < 4; j++) {
            if (block_shapes[shape][i][j]) {
                int r = i;
                int c = j;
                for (int k = 0; k < rotate; k++) {
                    int temp = r;
                    r = 3 - c;
                    c = temp;
                }
                draw_block(row + r, col + c, block_colors[shape]);
            }
        }
    }
}

// 检测俄罗斯方块是否碰到边界
bool check_boundary(Tetris tetris) {
    int shape = tetris.block.type;
    int rotate = tetris.rotate;
    int row = tetris.block.row;
    int col = tetris.block.col;
    for (int i = 0; i < 4; i++) {
        for (int j = 0; j < 4; j++) {
            if (block_shapes[shape][i][j]) {
                int r = i;
                int c = j;
                for (int k = 0; k < rotate; k++) {
                    int temp = r;
                    r = 3 - c;
                    c = temp;
                }
                if (row + r < 0 || row + r >= ROWS || col + c < 0 || col + c >= COLS) {
                    return true;
                }
            }
        }
    }
    return false;
}

// 检测俄罗斯方块是否碰到其他方块
bool check_collision(Tetris tetris, int board[][COLS]) {
    int shape = tetris.block.type;
    int rotate = tetris.rotate;
    int row = tetris.block.row;
    int col = tetris.block.col;
    for (int i = 0; i < 4; i++) {
        for (int j = 0; j < 4; j++) {
            if (block_shapes[shape][i][j]) {
                int r = i;
                int c = j;
                for (int k = 0; k < rotate; k++) {
                    int temp = r;
                    r = 3 - c;
                    c = temp;
                }
                if (row + r >= 0 && row + r < ROWS && col + c >= 0 && col + c < COLS) {
                    if (board[row + r][col + c]) {
                        return true;
                    }
                }
            }
        }
    }
    return false;
}

// 将俄罗斯方块加入到游戏区域中
void add_tetris(Tetris tetris, int board[][COLS]) {
    int shape = tetris.block.type;
    int rotate = tetris.rotate;
    int row = tetris.block.row;
    int col = tetris.block.col;
    for (int i = 0; i < 4; i++) {
        for (int j = 0; j < 4; j++) {
            if (block_shapes[shape][i][j]) {
                int r = i;
                int c = j;
                for (int k = 0; k < rotate; k++) {
                    int temp = r;
                    r = 3 - c;
                    c = temp;
                }
                board[row + r][col + c] = shape + 1;
            }
        }
    }
}

// 消除满行
void clear_lines(int board[][COLS]) {
    for (int i = ROWS - 1; i >= 0; i--) {
        bool full = true;
        for (int j = 0; j < COLS; j++) {
            if (!board[i][j]) {
                full = false;
                break;
            }
        }
        if (full) {