完成一个简单的高频（14443）电梯系统项目开发的代码

这个代码需要结合具体的硬件设备和系统架构来实现，下面是一个简单的高频电梯系统的代码框架：

#include <stdio.h>
#include <string.h>

// 定义电梯门状态常量
#define DOOR_CLOSED 0
#define DOOR_OPENED 1

// 定义电梯运行状态常量
#define IDLE 0
#define UP 1
#define DOWN 2

// 定义电梯楼层常量
#define FLOOR_MAX 20
#define FLOOR_MIN 1

// 定义电梯控制命令常量
#define CMD_NONE 0
#define CMD_UP 1
#define CMD_DOWN 2
#define CMD_OPEN_DOOR 3
#define CMD_CLOSE_DOOR 4

// 电梯状态结构体
typedef struct {
    int floor;          // 当前楼层
    int door_state;     // 门的状态
    int direction;      // 运行方向
    int command;        // 控制命令
} ElevatorState;

// 初始化电梯状态
void elevator_init(ElevatorState *state) {
    state->floor = 1;
    state->door_state = DOOR_CLOSED;
    state->direction = IDLE;
    state->command = CMD_NONE;
}

// 模拟电梯运行
void elevator_run(ElevatorState *state) {
    // 根据控制命令更新电梯状态
    switch (state->command) {
        case CMD_UP:
            if (state->floor < FLOOR_MAX) {
                state->floor++;
                state->direction = UP;
            }
            break;
        case CMD_DOWN:
            if (state->floor > FLOOR_MIN) {
                state->floor--;
                state->direction = DOWN;
            }
            break;
        case CMD_OPEN_DOOR:
            state->door_state = DOOR_OPENED;
            break;
        case CMD_CLOSE_DOOR:
            state->door_state = DOOR_CLOSED;
            break;
        default:
            break;
    }

    // 更新控制命令为无命令
    state->command = CMD_NONE;
}

// 处理电梯控制命令
void handle_command(ElevatorState *state, int command) {
    // 如果当前已有控制命令，则忽略新命令
    if (state->command != CMD_NONE) {
        return;
    }

    // 更新控制命令
    switch (command) {
        case CMD_UP:
            if (state->floor < FLOOR_MAX) {
                state->command = CMD_UP;
            }
            break;
        case CMD_DOWN:
            if (state->floor > FLOOR_MIN) {
                state->command = CMD_DOWN;
            }
            break;
        case CMD_OPEN_DOOR:
            state->command = CMD_OPEN_DOOR;
            break;
        case CMD_CLOSE_DOOR:
            state->command = CMD_CLOSE_DOOR;
            break;
        default:
            break;
    }
}

int main() {
    ElevatorState state;
    elevator_init(&state);

    // 模拟电梯运行
    while (1) {
        elevator_run(&state);

        // 处理电梯控制命令
        int command;
        scanf("%d", &command);
        handle_command(&state, command);

        // 输出电梯状态
        printf("Floor: %d\n", state.floor);
        printf("Door state: %s\n", state.door_state == DOOR_OPENED ? "Opened" : "Closed");
        printf("Direction: %s\n", state.direction == UP ? "Up" : state.direction == DOWN ? "Down" : "Idle");
        printf("\n");
    }

    return 0;
}

这个代码只是一个简单的框架，需要根据具体的需求和硬件设备进行修改和完善。