变形杆菌在液晶显示器( LM015L )上显示字符
变形杆菌在液晶显示器( LM015L )上显示字符
提问于 2022-05-20 14:16:39
我一直试图在LCD ( LM015L )上展示一些人物，但我没能做到。
我用c语言编写了以下代码：
// LCD module connections
sbit LCD_RS at LATD0_bit;
sbit LCD_EN at LATD1_bit;
sbit LCD_D4 at LATD2_bit;
sbit LCD_D5 at LATD3_bit;
sbit LCD_D6 at LATD4_bit;
sbit LCD_D7 at LATD5_bit;
sbit LCD_RS_Direction at TRISD0_bit;
sbit LCD_EN_Direction at TRISD1_bit;
sbit LCD_D4_Direction at TRISD2_bit;
sbit LCD_D5_Direction at TRISD3_bit;
sbit LCD_D6_Direction at TRISD4_bit;
sbit LCD_D7_Direction at TRISD5_bit;
// End LCD module connections
void main() {
Lcd_Init(); // Initialize LCD
Lcd_Cmd(_LCD_CLEAR); // Clear display
Lcd_Cmd(_LCD_CURSOR_OFF); // Cursor off
Lcd_Out(1, 1, "microcontrollers"); // Display "StudentCompanion"
Lcd_Out(2, 1, "lab.com"); // Display "Thermometer"
}我在proteus中设计了以下方案
在我运行模拟之后，LCD打开了，上面没有显示任何内容。
回答 1
Stack Overflow用户
发布于 2022-05-30 07:07:45
由于PORTD引脚与模拟硬件多路复用，因此您应该手动禁用模拟输入。这是您的代码中缺少的内容。注意，每次对PIC进行重置时，端口的默认输入函数都是模拟输入。
/ LCD module connections
sbit LCD_RS at LATD0_bit;
sbit LCD_EN at LATD1_bit;
sbit LCD_D4 at LATD2_bit;
sbit LCD_D5 at LATD3_bit;
sbit LCD_D6 at LATD4_bit;
sbit LCD_D7 at LATD5_bit;
sbit LCD_RS_Direction at TRISD0_bit;
sbit LCD_EN_Direction at TRISD1_bit;
sbit LCD_D4_Direction at TRISD2_bit;
sbit LCD_D5_Direction at TRISD3_bit;
sbit LCD_D6_Direction at TRISD4_bit;
sbit LCD_D7_Direction at TRISD5_bit;
// End LCD module connections
void main() {
// The library only configures the direction of pins but not the analog functions. So you must do it before initializing the LCD module.
ANSELD = 0; // Disable analog functions on PORTD
Lcd_Init(); // Initialize LCD
Lcd_Cmd(_LCD_CLEAR); // Clear display
Lcd_Cmd(_LCD_CURSOR_OFF); // Cursor off
Lcd_Out(1, 1, "microcontrollers"); // Display "StudentCompanion"
Lcd_Out(2, 1, "lab.com"); // Display "Thermometer"
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/72320434
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