STC12C5A60S2.zip

/*------------------------------------------------------------------*/ /* --- STC MCU Limited ---------------------------------------------*/ /* --- STC12C5Axx Series MCU PCA module output PWM wave Demo -------*/ /* --- Mobile: (86)13922805190 -------------------------------------*/ /* --- Fax: 86-0513-55012956,55012947,55012969 ---------------------*/ /* --- Tel: 86-0513-55012928,55012929,55012966----------------------*/ /* --- Web: www.STCMCU.com -----------------------------------------*/ /* --- Web: www.GXWMCU.com -----------------------------------------*/ /* If you want to use the program or the program referenced in the */ /* article, please specify in which data and procedures from STC */ /*------------------------------------------------------------------*/ #include "reg51.h" #include "intrins.h" #define FOSC 11059200L typedef unsigned char BYTE; typedef unsigned int WORD; /*Declare SFR associated with the PCA */ sfr CCON = 0xD8; //PCA control register sbit CCF0 = CCON^0; //PCA module-0 interrupt flag sbit CCF1 = CCON^1; //PCA module-1 interrupt flag sbit CR = CCON^6; //PCA timer run control bit sbit CF = CCON^7; //PCA timer overflow flag sfr CMOD = 0xD9; //PCA mode register sfr CL = 0xE9; //PCA base timer LOW sfr CH = 0xF9; //PCA base timer HIGH sfr CCAPM0 = 0xDA; //PCA module-0 mode register sfr CCAP0L = 0xEA; //PCA module-0 capture register LOW sfr CCAP0H = 0xFA; //PCA module-0 capture register HIGH sfr CCAPM1 = 0xDB; //PCA module-1 mode register sfr CCAP1L = 0xEB; //PCA module-1 capture register LOW sfr CCAP1H = 0xFB; //PCA module-1 capture register HIGH sfr PCAPWM0 = 0xf2; sfr PCAPWM1 = 0xf3; unsigned char delay1; // STV和BLANK间隔时间 unsigned char delay3; //CPV1和CPV2间隔时间 unsigned char delay2; // STV和CPV1间隔时间 unsigned char STVW; //STV正脉冲时间 unsigned char STV; //STV周期时间 unsigned char BLANK;//BLANK周期时间 unsigned char BS;//BLANK正脉冲时间 unsigned char LC;//LC和BLANK间隔时间 unsigned char LCS;//LC正脉冲时间 unsigned char CPV1;//CPV1周期时间 unsigned char CPV1S;//CPV1正脉冲时间 unsigned char CPV2;//CPV2周期时间 unsigned char CPV2S;//CPV2正脉冲时间 unsigned char T5; // CPV1和CPV2间隔时间 unsigned char US; //1us标志数 unsigned char TENMS; //10MS标志数 unsigned char ms; //0.MS标志数 unsigned char TENTHS;//0.1S标志数 unsigned char i; unsigned char j; sbit STV1_O=P1^0;//STV1输出引脚 sbit STV2_O=P1^1;//STV2输出引脚 sbit BLANK_O=P1^2;//BLANK输出引脚 sbit LC1_O=P2^3;//LC1输出引脚 sbit LC2_O=P2^4;//LC1输出引脚 sbit CPV1_O=P1^5;//CPV1输出引脚 sbit CPV2_O=P1^6;//CPV2输出引脚 sbit K1=P3^5;//启动时序开关 void init() { TMOD=0x10; //定时器1以方式1定时 TL1 = 0x18; //设置定时初值 TH1 = 0x7F; //设置定时初值 EA=1; //打开总中断 ET1=1; //允许定时器1中断 TR1=1; //开启定时器1 } void time1() interrupt 3 //定时器1中断函数 { // CR = 0; //PCA timer start off CCON = 0; //Initial PCA control register //Clear all module interrupt flag CL = 0; //Reset PCA base timer CH = 0; TL1 = 0x18; //设置定时初值 TH1 = 0x7F; //设置定时初值 BLANK_O=1;//BLANK输出高电平 CPV1_O=CPV2_O=0;//CPV1.2输出低电平1 i = 87;//延时30us while (--i); BLANK_O=0; _nop_(); _nop_(); i = 1; j = 205; do { while (--j); } while (--i); //延时35us LC++; if(LC==200)//200针翻转一次 { LC1_O=!LC1_O; LC2_O=!LC2_O; } _nop_(); _nop_(); i = 1; j = 205; do { while (--j); } while (--i); //延时35us STV1_O=STV2_O=1; i = 57;//延时10us while (--i); CCAP0H = 0x80; CCAP0L = 0x30; //PWM0 port output 50% duty cycle square wave CCAPM0 = 0x42; //PCA module-0 work in 8-bit PWM mode and no PCA interrupt CCAP1H = CCAP1L = 0xff; //PWM1 port output 0% duty cycle square wave PCAPWM1 = 0x03; CCAPM1 = 0x42; //PCA module-1 work in 8-bit PWM mode and no PCA interrupt CR = 1; //PCA timer start run i = 87; while (--i); //延时15us STV1_O=STV2_O=0; i = 87; while (--i); //延时15us CCAP1H = 0x80; CCAP1L = 0x30; //PWM1 port output 0% duty cycle square wave PCAPWM1 = 0x30; } void main() { init(); CCON = 0; //Initial PCA control register //PCA timer stop running //Clear CF flag //Clear all module interrupt flag CL = 0; //Reset PCA base timer CH = 0; CMOD = 0x08; //Set PCA timer clock source as Fosc/2 //Disable PCA timer overflow interrupt while(1) { ; } }