单片机函数信号发生器频率幅度可调可现实.zip

#include"key.h" #include"math.h" unsigned int fword = 30;//1000; unsigned char Duty; unsigned char gFunctionCount=0; unsigned char gTimeCount=0; unsigned char gType=0; char FreqNum[5]={0,0,0,3,0}; char AmpNum[2]={5,0}; char DutyNum[2]={5,0}; /*延时函数：按键消抖用*/ static void delay10ms(void) { unsigned char j,i; for(j=0;j<110;j++) for(i=0;i<100;i++); } /*按键扫描函数：主函数主循环只调用此函数，其完成参数设定以及下达功能*/ void key_scan(void) { unsigned int freqtemp; unsigned int amptemp; unsigned char dutytemp; if(KEY1==0) //功能键按下 { delay10ms(); if(KEY1==0) { gFunctionCount++; //功能设定一：设置波形 if(gFunctionCount==1) { gTimeCount=0; EA = 0; LCDDispChar(8,1,'#'); } //功能设定二：设置频率 else if(gFunctionCount==2) { gTimeCount=0; LCDCursor(); LCDDispChar(8,1,' '); LCDDispNum(6,2,FreqNum[3]); } //功能设定三：设置幅值 else if(gFunctionCount==3) { gTimeCount=0; LCDCursor(); LCDDispChar(13,1,'.'); } //功能设定四：设置方波占空比 else if((gFunctionCount==4)&&(gType==1)) { gTimeCount=0; LCDCursor(); LCDDispNum(14,2,DutyNum[1]); LCDDispNum(13,2,DutyNum[0]); } //设定完毕 else if((gFunctionCount==5)||((gFunctionCount==4)&&(gType!=1))) { gFunctionCount=0; LCDNotCursor(); //计算频率值 freqtemp=(unsigned int )FreqNum[0]*10000+(unsigned int )FreqNum[1]*1000+(unsigned int)FreqNum[2]*100+(unsigned int)FreqNum[3]*10+(unsigned int)FreqNum[4]; if(freqtemp>10000)//当输入频率大于10kHz时，将频率设置成10kHz { freqtemp = 10000; LCDDispNum(3,2,1);LCDDispNum(4,2,0);LCDDispNum(5,2,0);LCDDispNum(6,2,0);LCDDispNum(7,2,0); FreqNum[0]=1;FreqNum[1]=0;FreqNum[2]=0;FreqNum[3]=0;FreqNum[4]=0; } else if(freqtemp<1)//当输入频率小于1Hz时，将频率设置成1Hz { freqtemp = 1; LCDDispNum(3,2,0);LCDDispNum(4,2,0);LCDDispNum(5,2,0);LCDDispNum(6,2,0);LCDDispNum(7,2,1); FreqNum[0]=0;FreqNum[1]=0;FreqNum[2]=0;FreqNum[3]=0;FreqNum[4]=1; } //计算幅值 amptemp =(unsigned int )AmpNum[0] *10 +(unsigned int )AmpNum[1]; if(amptemp>50) { amptemp = 50; LCDDispNum(12,1,5);LCDDispNum(14,1,0); AmpNum[0]=5;AmpNum[1]=0; } //计算占空比 dutytemp=(unsigned char)DutyNum[0]*10 +(unsigned char)DutyNum[1]; if(dutytemp>90)//当输入占空比大于90%时，将占空比设置成90% { dutytemp = 90; LCDDispNum(13,2,9);LCDDispNum(14,2,0); DutyNum[0]=9;DutyNum[1]=0; } else if(dutytemp<10)//当输入占空比小于10%时，将占空比设置成10% { dutytemp = 10; LCDDispNum(13,2,1);LCDDispNum(14,2,0); DutyNum[0]=1;DutyNum[1]=0; } if(gType!=1)//当波形不为方波时，显示横杠表示无效 { LCDDispString(13,2,"--");} //设置数据处理完成，以下代码进行DA输出设置 fword = (unsigned int)(freqtemp*1.009); //设置频率控制字 AmPort = (unsigned char)(amptemp*5.1); //设置幅值 Duty = dutytemp; //设置方波占空比 EA = 1; } }while(!KEY1); //循环到松手 } if(KEY2==0) //设定键按下 { delay10ms(); if(KEY2==0) { gTimeCount++; /********************************************************* 波形设定 *********************************************************/ if(gFunctionCount==1 && gTimeCount==1) { LCDDispString(5,1,"Squ");gType=1; } else if(gFunctionCount==1 && gTimeCount==2) { LCDDispString(5,1,"Tri");gType=2; } else if(gFunctionCount==1 && gTimeCount==3) { LCDDispString(5,1,"Saw");gType=3;} else if(gFunctionCount==1 && gTimeCount==4) { gTimeCount=0;LCDDispString(5,1,"Sin");gType=0; } /********************************************************* 频率设定 *********************************************************/ else if(gFunctionCount==2 && gTimeCount==1) { LCDDispNum(5,2,FreqNum[2]); } else if(gFunctionCount==2 && gTimeCount==2) { LCDDispNum(4,2,FreqNum[1]); } else if(gFunctionCount==2 && gTimeCount==3) { LCDDispNum(3,2,FreqNum[0]); } else if(gFunctionCount==2 && gTimeCount==4) { LCDDispChar(2,2,' '); } else if(gFunctionCount==2 && gTimeCount==5) { gTimeCount=0;LCDDispNum(6,2,FreqNum[3]); } /********************************************************* 幅值设定 *********************************************************/ else if(gFunctionCount==3 && gTimeCount==1) { LCDDispChar(11,1,':'); } else if(gFunctionCount==3 && gTimeCount==2) { gTimeCount=0;LCDDispChar(13,1,'.'); } /********************************************************* 幅值设定 *********************************************************/ else if(gFunctionCount==4 && gTimeCount==1) { LCDDispChar(12,2,':'); } else if(gFunctionCount==4 && gTimeCount==2) { gTimeCount=0;LCDDispNum(13,2,DutyNum[0]); } }while(!KEY2); //循环到松手 } if(KEY3==0) //加键按下 { delay10ms(); if(KEY3==0) { if(gFunctionCount==2 && gTimeCount==1) { FreqNum[3]++; if(FreqNum[3]==10) FreqNum[3]=0; LCDDispNum(6,2,FreqNum[3]);LCDDispNum(5,2,FreqNum[2]); } else if(gFunctionCount==2 && gTimeCount==2) { FreqNum[2]++; if(FreqNum[2]==10) FreqNum[2]=0; LCDDispNum(5,2,FreqNum[2]);LCDDispNum(4,2,FreqNum[1]); } else if(gFunctionCount==2 && gTimeCount==3) { FreqNum[1]++; if(FreqNum[1]==10) FreqNum[1]=0; LCDDispNum(4,2,FreqNum[1]);LCDDispNum(3,2,FreqNum[0]); } else if(gFunctionCount==2 && gTimeCount==4) { FreqNum[0]++; if(FreqNum[0]==10) FreqNum[0]=0; LCDDispNum(3,2,FreqNum[0]);LCDDispChar(2,2,' '); } else if(gFunctionCount==2 && gTimeCount==0) { FreqNum[4]++; if(FreqNum[4]==10) FreqNum[4]=0; LCDDispNum(7,2,FreqNum[4]); LCDDispNum(6,2,FreqNum[3]); } else if(gFunctionCount==3 &&gTimeCount==0) { AmpNum[1]++; if(AmpNum[1]==10) AmpNum[1]=0; LCDDispNum(14,1,AmpNum[1]); LCDDispChar(13,1,'.'); } else if(gFunctionCount==3 &&gTimeCount==1) { AmpNum[0]++; if(AmpNum[0]==6) AmpNum[0]=0; LCDDispNum(12,1,AmpNum[0]); LCDDispChar(11,1,':'); } else if(gFunctionCount==4 &&gTimeCount==0) { DutyNum[1]++; if(DutyNum[1]==10) DutyNum[1]=0; LCDDispNum(14,2,DutyNum[1]); LCDDispNum(13,2,DutyNum[0]); } else if(gFunctionCount==4 &&gTimeCount==1) { DutyNum[0]++; if(DutyNum[0]==10) DutyNum[0]=0; LCDDispNum(13,2,DutyNum[0]); LCDDispChar(12,2,':'); } }while(!KEY3); //循环到松手 } if(KEY4==0) //减键按下 { delay10ms(); if(KEY4==0) { if(gFunctionCount==2 && gTimeCount==1) { FreqNum[3]--; if(FreqNum[3]==-1) FreqNum[3]=9; LCDDispNum(6,2,FreqNum[3]);LCDDispNum(5,2,FreqNum[2]); } else if(gFunctionCount==2 && gTimeCount==2) { FreqNum[2]--; if(FreqNum[2]==-1) FreqNum[2]=9; LCDDispNum(5,2,FreqNum[2]);LCDDispNum(4,2,FreqNum[1]); } else if(gFunctionCount==2 && gTimeCount==3) { FreqNum[1]--; if(FreqNum[1]==-1) FreqNum[1]=9; LCDDispNum(4,2,FreqNum[1]);LCDDispNum(3,2,FreqNum[0]); } else if(gFunctionCount==2 && gTimeCount==4) { FreqNum[0]--; if(FreqNum[0]==-1) FreqNum[0]=9; LCDDispNum(3,2,FreqNum[0]);LCDDispChar(2,2,' '); } else if(gFunctionCount==2 && gTimeCount==0) { FreqNum[4]--; if(FreqNum[4]==-1) FreqNum[4]=9; LCDDispNum(7,2,FreqNum[4]); LCDDispNum(6,2,FreqNum[3]); } else if(gFunctionCount==3 &&gTimeCount==0) { AmpNum[1]--; if(AmpNum[1]==-1) AmpNum[1]=9; LCDDispNum(14,1,AmpNum[1]); LCDDispChar(13,1,'.');