KEY_LED.rar_lpc2132

#include <LPC213X.H> /*============================================================ LPC214X 按键功能演示 引脚分布 P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 TX0 RX0 CS1 K4 K3 P0.8 P0.9 P0.10 P0.11 P0.12 P0.13 P0.14 P0.15 TX1 RX1 RW SCL SDA K1 VRST K2 P0.16 P0.17 P0.18 P0.19 P0.20 P0.21 P0.22 P0.23 BEEP SCK1 MISO MOSI SSEL RS_COM RW VB P0.24 P0.25 P0.26 P0.27 P0.28 P0.29 P0.30 P0.31 AOUT D+ D- A_IN1 A_IN2 CS2 ULED LED引脚 L1---------L8 P1.16----P1.23 */ #define KEY1 13 #define KEY2 15 #define KEY3 7 #define KEY4 6 #define KEY_MASK=(1<<KEY1)|(1<<KEY2)|(1<<KEY3)|(1<<KEY4) #define Uchar unsigned char Uchar temp[24]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80, 0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01, 0x81,0x42,0x24,0x18,0x18,0x24,0x42,0x81,}; void init_port(void) { //port initialized IODIR1=0x00FF0000; IODIR0=0x40600010; } /* unsigned char Scan_Key(void) { unsigned int k; k=IOPIN0; if((k&1<<KEY1)==0)return 1; if((k&1<<KEY2)==0)return 2; if((k&1<<KEY3)==0)return 3; if((k&1<<KEY4)==0)return 4; return 0; } */ unsigned char Scan_Key(void) { unsigned int k; unsigned char key,i; i=0; key=0; k=IOPIN0; if((k&1<<KEY4)==0)key+=1; key=key<<1; if((k&1<<KEY3)==0)key+=1; key=key<<1; if((k&1<<KEY2)==0)key+=1; key=key<<1; if((k&1<<KEY1)==0)key+=1; switch(key) { case 0x00: i=0; break; case 0x08: i=4; break; case 0x04: i=3; break; case 0x02: i=2; break; case 0x01: i=1; break; case 0x0F: //复合键 i=0XF; break; case 0x0E: i=0X0E; break; default: i=0; break; } return i; } /* */ void delay (unsigned int i) { /* Delay function */ unsigned int n; while(i>1) { for(n=65535;n>1;n--); i--; } } int main(void) { unsigned char i; init_port(); IOSET1 = 0x00ff0000; while(1) { i=Scan_Key(); if(i!=0)IOCLR1 = (0x00008000<<i); delay(30); IOSET1 = 0x00ff0000; //ALL LED OFF //delay(100); } }