我一直在使用 PIC 微控制器设计一个简单的交通信号代码,它应该有一个控制面板,您可以使用它输入每个交通灯的时间,以使其更安全我添加了一个密码以阻止任何人弄乱时间.
我使用 Proteus 8 进行模拟。有时会发生问题,当我在 LCD 上打印某些内容时,它会出现错误,我仍然无法确定为什么会发生这种情况。当输入红色时间并开始黄色时,会显示:http: //i.stack.imgur.com/lnbrI.png
同样的事情发生在绿色计时,我尝试而不是自动输入字符串以首先将其放入变量中,研究没有得到任何特定于我的问题的东西!这是我的代码:
char kp;
char entry[16];
int i = 0;
char password[] = "12345";
char *Redd = "Red";
char *Yelloww = "Yellow";
char *Greenn = "Green";
int Red;
int Green;
int Yellow;
char test[5];
sbit LCD_RS at RD4_bit;
sbit LCD_EN at RD6_bit;
sbit LCD_D4 at RD0_bit;
sbit LCD_D5 at RD1_bit;
sbit LCD_D6 at RD2_bit;
sbit LCD_D7 at RD3_bit;
sbit LCD_RS_Direction at TRISD4_bit;
sbit LCD_EN_Direction at TRISD6_bit;
sbit LCD_D4_Direction at TRISD0_bit;
sbit LCD_D5_Direction at TRISD1_bit;
sbit LCD_D6_Direction at TRISD2_bit;
sbit LCD_D7_Direction at TRISD3_bit;
char keypadPort at PORTB;
char keypadchar () {
int key = 0;
while (!key) key = Keypad_Key_Click();
switch (key) {
case 1: return '1'; break;
case 2: return '2'; break;
case 3: return '3'; break;
case 5: return '4'; break;
case 6: return '5'; break;
case 7: return '6'; break;
case 9: return '7'; break;
case 10: return '8'; break;
case 11: return '9'; break;
case 13: return '*'; break;
case 14: return '0'; break;
case 15: return '#'; break;
}
}
void inputPassword() {
int count = 0;
i = 0;
Lcd_out(1,1,"Enter Password");
lcd_cmd(_LCD_SECOND_ROW);
while(1) {
kp = keypadchar();
if (kp != '*' && kp != '#' && count < 15) {
Lcd_Chr_Cp('*');
while(entry[i]!=0) i++; // break when find NULL
entry[i] = kp; // insert char where NULL was
entry[i+1] = 0; // and insert new NULL after it
i = 0;
count++;
} else if (kp == '*') {
if (strlen(entry) != 0) {
LCD_Cmd(_LCD_MOVE_CURSOR_LEFT);
Lcd_Chr_Cp(' ');
LCD_Cmd(_LCD_MOVE_CURSOR_LEFT);
while(entry[i]!=0) i++; // break when find NULL
entry[i-1] = 0; // insert Null
i = 0;
count--;
}
} else if (kp == '#') {
if (strlen(entry) != 0)
if (strcmp(password,entry) == 0) {
Lcd_out(2,1,"Password Correct ");
while(entry[i]!=0) {
entry[i] = 0;
i++;
}
i = 0;
break;
}
else {
Lcd_out(2,1,"Wrong password ");
delay_ms(1000);
Lcd_out(2,1," ");
Lcd_out(2,1,"");
while(entry[i]!=0) {
entry[i] = 0;
i++;
}
count = 0;
i = 0;
}
}
}
}
int entertiming(char *colorN) {
int count = 0;
i = 0;
LCD_Cmd(_LCD_CLEAR);
delay_ms(1);
strcat(colorN," timing");
delay_ms(1);
LCD_Out(1,1,colorN);
delay_ms(1);
LCD_Cmd(_LCD_SECOND_ROW);
while(entry[i]!=0) {
entry[i] = 0;
i++;
}
i = 0;
while(1) {
kp = keypadchar();
if (kp != '*' && kp != '#' && count < 3) {
Lcd_Chr_Cp(kp);
while(entry[i]!=0) i++; // break when find NULL
entry[i] = kp; // insert char where NULL was
entry[i+1] = 0; // and insert new NULL after it
i = 0;
count++;
} else if (kp == '*') {
if (strlen(entry) != 0) {
LCD_Cmd(_LCD_MOVE_CURSOR_LEFT);
Lcd_Chr_Cp(' ');
LCD_Cmd(_LCD_MOVE_CURSOR_LEFT);
while(entry[i]!=0) i++; // break when find NULL
entry[i-1] = 0; // insert Null
i = 0;
count--;
}
} else if (kp == '#') {
if (strlen(entry) != 0)
return atoi(entry);
}
}
}
void startcountdown(int time) {
while (time >= 0) {
wordtostr(time,test);
lcd_out(2,1,test);
time--;
delay_ms(1000);
}
}
void main () {
Keypad_init();
Lcd_init();
LCD_Cmd(_LCD_CLEAR) ;
LCD_Out(1, 1, "Hello!") ;
Lcd_Cmd(_LCD_SECOND_ROW);
delay_ms(1000);
while(1) {
inputPassword();
delay_ms(1);
Red = entertiming(Redd);
delay_ms(1);
Yellow = entertiming(Yelloww);
delay_ms(1);
Green = entertiming(Greenn);
while(1) {
Lcd_cmd(_LCD_CLEAR);
Lcd_Out(1,1,"Red");
startcountdown(Red);
Lcd_cmd(_LCD_CLEAR);
Lcd_Out(1,1,"Yellow");
startcountdown(Yellow);
Lcd_cmd(_LCD_CLEAR);
Lcd_Out(1,1,"Green");
startcountdown(Green);
}
}
}
编辑:我用更新的代码编辑了代码,按照评论中的建议,我还完成了代码,除了一小块,保持倒计时的内部while循环应该有一个中断命令,当中断发生时发生更改红色/黄色/绿色时间的值..出现了一个新问题,我得到的黄色读数总是转换为 0!不管我输入什么数字
第二次编辑:当我更改红色、黄色、绿色功能的序列时,一些序列可以工作,而有些则不能,这没有意义