嵌入式系统设计问答题

使用TFT-LCD显示屏显示如下信息:Name: XXX

SudentID: XXX

Date: 2018/12DXX

注: X代表的信息根据个人情况填写。

要在TFT-LCD显示屏上显示上述信息，您需要通过相应的编程和控制硬件来实现。在这里，我将为您提供一个简单的示例代码，假设您已经连接了一个支持TFT-LCD显示的适当硬件，并且有能力进行编程控制。请注意，这是一个简单的示例，实际实现可能因硬件和软件平台而异。

以下示例代码使用Python和Python的RPi.GPIO库（适用于树莓派）来模拟向TFT-LCD显示屏发送数据。确保您已正确配置树莓派和TFT-LCD连接，并安装RPi.GPIO库。

import RPi.GPIO as GPIO
import time

# 定义TFT-LCD相关的引脚
LCD_RS = 25
LCD_E = 24
LCD_D4 = 23
LCD_D5 = 17
LCD_D6 = 27
LCD_D7 = 22

# LCD相关参数
LCD_WIDTH = 16  # LCD显示的宽度，这里假设是16x2行
LCD_CHR = True
LCD_CMD = False

LCD_LINE_1 = 0x80  # LCD第一行地址
LCD_LINE_2 = 0xC0  # LCD第二行地址

# 初始化LCD屏幕
def lcd_init():
    GPIO.setwarnings(False)
    GPIO.setmode(GPIO.BCM)
    GPIO.setup(LCD_E, GPIO.OUT)
    GPIO.setup(LCD_RS, GPIO.OUT)
    GPIO.setup(LCD_D4, GPIO.OUT)
    GPIO.setup(LCD_D5, GPIO.OUT)
    GPIO.setup(LCD_D6, GPIO.OUT)
    GPIO.setup(LCD_D7, GPIO.OUT)

    lcd_byte(0x33, LCD_CMD)  # 110011 初始化
    lcd_byte(0x32, LCD_CMD)  # 110010 初始化
    lcd_byte(0x06, LCD_CMD)  # 000110 光标右移，写入不移动
    lcd_byte(0x0C, LCD_CMD)  # 001100 打开显示
    lcd_byte(0x28, LCD_CMD)  # 101000 数据传输4位，显示2行，字体5x8

    lcd_byte(0x01, LCD_CMD)  # 000001 清除
    time.sleep(0.001)

# 向LCD屏幕发送字节
def lcd_byte(bits, mode):
    GPIO.output(LCD_RS, mode)
    GPIO.output(LCD_D4, False)
    GPIO.output(LCD_D5, False)
    GPIO.output(LCD_D6, False)
    GPIO.output(LCD_D7, False)
    if bits & 0x10 == 0x10:
        GPIO.output(LCD_D4, True)
    if bits & 0x20 == 0x20:
        GPIO.output(LCD_D5, True)
    if bits & 0x40 == 0x40:
        GPIO.output(LCD_D6, True)
    if bits & 0x80 == 0x80:
        GPIO.output(LCD_D7, True)

    lcd_toggle_enable()

    GPIO.output(LCD_D4, False)
    GPIO.output(LCD_D5, False)
    GPIO.output(LCD_D6, False)
    GPIO.output(LCD_D7, False)
    if bits & 0x01 == 0x01:
        GPIO.output(LCD_D4, True)
    if bits & 0x02 == 0x02:
        GPIO.output(LCD_D5, True)
    if bits & 0x04 == 0x04:
        GPIO.output(LCD_D6, True)
    if bits & 0x08 == 0x08:
        GPIO.output(LCD_D7, True)

    lcd_toggle_enable()

# 控制LCD使能引脚
def lcd_toggle_enable():
    time.sleep(0.0005)
    GPIO.output(LCD_E, True)
    time.sleep(0.0005)
    GPIO.output(LCD_E, False)
    time.sleep(0.0005)

# 向LCD屏幕写入字符串
def lcd_string(message, line):
    message = message.ljust(LCD_WIDTH, " ")
    lcd_byte(line, LCD_CMD)
    for i in range(LCD_WIDTH):
        lcd_byte(ord(message[i]), LCD_CHR)

# 主函数
def main():
    try:
        lcd_init()
        name = "XXX"
        student_id = "XXX"
        date = "2018/12DXX"

        lcd_string("Name: {}".format(name), LCD_LINE_1)
        lcd_string("StudentID: {}".format(student_id), LCD_LINE_2)
        time.sleep(3)  # 显示3秒钟

        lcd_string("Date: {}".format(date), LCD_LINE_1)
        time.sleep(3)  # 显示3秒钟

        # 清除LCD显示
        lcd_string("", LCD_LINE_1)
        lcd_string("", LCD_LINE_2)

        GPIO.cleanup()

    except KeyboardInterrupt:
        pass

if __name__ == "__main__":
    main()