51单片机之按键控制RGB灯描述利用KEIL5编程使AT89C52通过按键输入控制RGB灯显示不同颜色。硬件电路仿真图未运行电路仿真图运行程序主要是按键消抖机械按键按下有一定的抖动时间按下时需要延时一段时间再次判断。仿真软件的按键波形#include REGX52.Hsbit KEY1 P3^0; //°´¼üsbit LED_R P2^0; //ºìsbit LED_G P2^1; //ÂÌsbit LED_B P2^2; //À¶unsigned char LED_Mode 0;unsigned char Key_Flag 0;//ÑÓʱ1ms(?? 12MHz)void delay_ms(unsigned int ms){unsigned int i, j;for(i ms; i 0; i--)for(j 110; j 0; j--); // 12MHz???110? ˜ 1ms}void LED_RGB(unsigned char i){switch(i)//¿ØÖÆLEDÏÔʾÑÕÉ«{case 0: LED_R 1; LED_G 1; LED_B 1; break; //blackcase 1: LED_R 0; LED_G 1; LED_B 1; break; //redcase 2: LED_R 1; LED_G 0; LED_B 1; break; //greencase 3: LED_R 1; LED_G 1; LED_B 0; break; //bluecase 4: LED_R 0; LED_G 0; LED_B 1; break; //yellowcase 5: LED_R 0; LED_G 1; LED_B 0; break; //violetcase 6: LED_R 1; LED_G 0; LED_B 0; break; //cyancase 7: LED_R 0; LED_G 0; LED_B 0; break; //whitedefault: break;}}void Button_Trigger()//°´¼ü´¥·¢{//Åжϰ´¼ü°´ÏÂÇÒ°´¼ü±ê־λÊÇûÓд¥·¢µÄ״̬if(KEY1 0Key_Flag 0){delay_ms(10); //»úе°´¼üÏû¶¶if(KEY1 0Key_Flag 0){Key_Flag 1; //°´¼ü±ê־λÖÃ1£¬È·¶¨°´¼üÒѾ­°´ÏÂLED_Mode;LED_Mode % 8;}}else if(KEY1 1Key_Flag 1)//°´¼üËÉ¿ªÇÒ°´¼ü֮ǰ°´Ï¹ý{Key_Flag 0;//°´¼ü±ê־λÖÃ0}}void main(){while(1){Button_Trigger();LED_RGB(LED_Mode);}}以上都是个人练习经验。