LCD1602滚动显示切换播放暂停字符串

显示Public Places
显示No Smoking
播放
暂停

部分代码

char zifu1[] = "Public Places   ";
char zifu2[] = "Class Now       ";
char zifu3[] = "No admittance   ";
char *zifu[] = { zifu1, zifu2, zifu3 };
char juti_L[3] = { 16, 16, 16 };

char zifu12[] = "No Smoking      ";
char zifu22[] = "Quiet Please    ";
char zifu32[] = "Staff Only      ";
char *zifu22a[] = { zifu12, zifu22, zifu32 };
char juti_L2[3] = { 16, 16, 16 };


int main(void)
{
    char key_v;
    char time = 0;
    char start_char_num = 0;

    WDTCTL = WDTPW | WDTHOLD; /* Stop watchdog timer */

    Clock_Init(); /* 系统时钟设置 */

    key_init(); /*按键初始化 */

    Port_init(); /* 显示器引脚初始化 */
    LCD_init(); /* 显示器初始化 */

    _EINT(); /* 开中断 */

    display(0, 0); /* 显示哪一个字符 从哪开始显示 */
    display_2(0, 0);

    while (1)
    {
        key_v = KeySscan();
        if (key_v != 0)
        {
            if (key_v == 1)
            {
                num++;
                if (num == 3)
                    num = 0;

                display(num, 0);
                display_2(num, 0);
                start_char_num = 0;

            }
            else if (key_v == 2)
            {
                start = 1;
            }
            else if (key_v == 3)
            {
                start = 0;
            }
        }

        delay_ms(10);

        if (start == 1)
        {
            time++;
            if (time == 27)
            {
                time = 0; /* 时间控制 */

                start_char_num++; //从哪里开始显示
                if (start_char_num >= juti_L[num])
                {
                    start_char_num = 0;
                }

                display(num, start_char_num); /* 显示哪一个字符 从哪开始显示 */
                display_2(num, start_char_num); /* 显示哪一个字符 从哪开始显示 */
            }
        }
    }
}

全部程序

https://docs.qq.com/sheet/DUEdqZ2lmbmR6UVdU?tab=BB08J2