转化为python语言
时间: 2023-10-14 16:15:21 浏览: 40
以下是一个使用Python控制LCD1602显示“我和你”三个汉字的示例代码:
```
import RPi.GPIO as GPIO
import time
# 定义LCD1602的引脚
LCD_RS = 37
LCD_RW = 35
LCD_E = 33
LCD_D4 = 31
LCD_D5 = 29
LCD_D6 = 23
LCD_D7 = 21
# 定义LCD1602的命令
LCD_CLEAR = 0x01
LCD_HOME = 0x02
LCD_ENTRY_MODE = 0x06
LCD_DISPLAY_ON = 0x0C
LCD_FUNCTION_SET = 0x28
LCD_CGRAM_ADDR = 0x40
LCD_DDRAM_ADDR = 0x80
# 定义“我”字的16进制代码
wo = [
0b00000,
0b11111,
0b10001,
0b10001,
0b10101,
0b11011,
0b10001,
0b00000
]
# 定义“和”字的16进制代码
he = [
0b01010,
0b00000,
0b11111,
0b00100,
0b00100,
0b00100,
0b11111,
0b00000
]
# 定义“你”字的16进制代码
ni = [
0b00000,
0b11111,
0b00001,
0b00001,
0b11111,
0b00010,
0b11111,
0b00000
]
# 初始化LCD1602
def init_lcd():
GPIO.setmode(GPIO.BOARD)
GPIO.setup(LCD_RS, GPIO.OUT)
GPIO.setup(LCD_RW, GPIO.OUT)
GPIO.setup(LCD_E, 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)
send_command(0x33)
send_command(0x32)
send_command(LCD_FUNCTION_SET)
send_command(LCD_ENTRY_MODE)
send_command(LCD_DISPLAY_ON)
send_command(LCD_CLEAR)
time.sleep(0.01)
# 发送命令到LCD1602
def send_command(cmd):
GPIO.output(LCD_RS, 0)
GPIO.output(LCD_RW, 0)
GPIO.output(LCD_D4, ((cmd >> 4) & 0x01))
GPIO.output(LCD_D5, ((cmd >> 5) & 0x01))
GPIO.output(LCD_D6, ((cmd >> 6) & 0x01))
GPIO.output(LCD_D7, ((cmd >> 7) & 0x01))
GPIO.output(LCD_E, 1)
time.sleep(0.000001)
GPIO.output(LCD_E, 0)
GPIO.output(LCD_D4, (cmd & 0x01))
GPIO.output(LCD_D5, ((cmd >> 1) & 0x01))
GPIO.output(LCD_D6, ((cmd >> 2) & 0x01))
GPIO.output(LCD_D7, ((cmd >> 3) & 0x01))
GPIO.output(LCD_E, 1)
time.sleep(0.000001)
GPIO.output(LCD_E, 0)
time.sleep(0.01)
# 发送数据到LCD1602
def send_data(data):
GPIO.output(LCD_RS, 1)
GPIO.output(LCD_RW, 0)
GPIO.output(LCD_D4, ((data >> 4) & 0x01))
GPIO.output(LCD_D5, ((data >> 5) & 0x01))
GPIO.output(LCD_D6, ((data >> 6) & 0x01))
GPIO.output(LCD_D7, ((data >> 7) & 0x01))
GPIO.output(LCD_E, 1)
time.sleep(0.000001)
GPIO.output(LCD_E, 0)
GPIO.output(LCD_D4, (data & 0x01))
GPIO.output(LCD_D5, ((data >> 1) & 0x01))
GPIO.output(LCD_D6, ((data >> 2) & 0x01))
GPIO.output(LCD_D7, ((data >> 3) & 0x01))
GPIO.output(LCD_E, 1)
time.sleep(0.000001)
GPIO.output(LCD_E, 0)
time.sleep(0.01)
# 定义自定义字符
def define_char(addr, data):
send_command(LCD_CGRAM_ADDR | (addr << 3))
for i in range(8):
send_data(data[i])
# 在LCD上显示“我和你”三个汉字
def show_hanzi():
define_char(0, wo)
define_char(1, he)
define_char(2, ni)
send_command(LCD_CLEAR)
send_command(LCD_HOME)
send_data(0)
send_data(1)
send_data(2)
# 主函数
def main():
init_lcd()
show_hanzi()
while True:
pass
if __name__ == '__main__':
main()
```
在代码中,我们首先定义了LCD1602的引脚和命令,然后定义了“我”、“和”、“你”三个汉字的16进制代码。在`init_lcd()`函数中初始化了LCD1602的引脚,并发送了一些初始化命令。在`define_char()`函数中定义了自定义字符。在`show_hanzi()`函数中调用了`define_char()`函数定义三个汉字的自定义字符,并通过`send_command()`和`send_data()`函数在LCD上显示这三个汉字。最后在`main()`函数中初始化LCD1602并调用`show_hanzi()`函数显示汉字,实现了在LCD1602上显示“我和你”三个汉字的功能。