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2019年10月21日 | ATmega2560单片机12路PWM输出的程序每路PWM可独立控制

2019-10-21 来源：51hei

PWM模块设计说明：

使用ATmega2560单片机开发一个12路PWM输出的程序，要求每路PWM可以独立控制。通过串口指令控制某路PWM输出某个频率值（具体通道受指令第一字节控制），每路PWM的频率范围能在20-2000HZ范围内变化（具体频率值受指令第二字节控制），同时，还能够随时停止某路的输出。

指令要求：

A1 XX 第一路PWM连续输出占空比为50%不变的方波。

（XX为00时，停止输出，为01~FF时，输出20~2000HZ频率值，其中重点关照1000HZ以下，以5HZ为步进；1000-2000HZ以15HZ步进即可，以上要求的步进值并非十分严格，如果不易实现，可以稍微修改。）

以下均相同要求：

A2 XX 第二路。。。。

A3 XX 第三路。。。。

...............

AC XX 第十二路。。。。

初始上电时，各路均不输出。

avr单片机源程序：

#include "kernel.h"

unsigned int PWM_Buf[6];//6路PWM频率

unsigned long timer0_ticks;

unsigned long timer0_tickssec;

unsigned long timer1_ticks;

unsigned long timer1_ticksmin;

unsigned long timer2_ticks;

unsigned long timer2_tickssec;

unsigned long timer3_ticks;

unsigned long timer3_ticksmin;

unsigned long timer4_ticks;

unsigned long timer4_ticksmin;

unsigned long timer5_ticks;

unsigned long timer5_ticksmin;

void Timer0_Init(void)

{

timer0_ticks = 0;

timer0_tickssec = 0;

TCCR0A = 0x00;

TCCR0B = 0x00;

TCNT0 = 0x00;

OCR0A = F_CPU/(1024-1)/20;//频率F_PWM

OCR0B = OCR0A/2;//占空比50%

//TCCR0A = 0xA3; //COM0A1 COM0A0 COM0B1 COM0B0 – – WGM01 WGM00

TCCR0B = 0xCD; //FOC0A FOC0B – – WGM02 CS02 CS01 CS00

TCCR0A = 0x00;

TCCR0B = 0x00;//stop

TCNT0 = 0xE7;//25us

OCR0A = 0x18;

OCR0B = 0x18;

TCCR0A = 0x03;

TCCR0B = 0x02;//start,clkT0S/8

TIMSK0|= 0x01;//enable 0verflow interrupt*/

}

void TC0_Set_PWM(unsigned int curF)

{//20~80为clkT0S/1024，80~300为clkT0S/256，300~2000为clkT0S/64

if(curF==0)

{

OCR0A = 0;

OCR0B = 0;

TCCR0A = 0;

}

else if((curF>=20)&&(curF<80))

{

OCR0A = F_CPU/(1024-1)/curF;

OCR0B = OCR0A/2;

TCCR0A = 0xA3;

TCCR0B = 0xCD;

}

else if((curF>=80)&&(curF<300))

{

OCR0A = F_CPU/(256-1)/curF;

OCR0B = OCR0A/2;

TCCR0A = 0xA3;

TCCR0B = 0xCC;

}

else if((curF>=300)&&(curF<=2000))

{

OCR0A = F_CPU/(64-1)/curF;

OCR0B = OCR0A/2;

TCCR0A = 0xA3;

TCCR0B = 0xCB;

}

void Timer1_Init(void)

{

unsigned int temp;

timer1_ticks = 0;

timer1_ticksmin = 0;

TCCR1A = 0x00;

TCCR1B = 0x00;

TCCR1C = 0x00;

TCNT1H = 0x00;

TCNT1L = 0x00;

temp = F_CPU/16/20;

OCR1A=temp;

//temp = temp/2;

//OCR1B=temp;

//OCR1C=temp;

//TCCR1A=(0< TCCR1B=(1< /*

TCCR1A = 0x00;//COM1A1 COM1A0 COM1B1 COM1B0 COM1C1 COM1C0 WGM11 WGM10

TCCR1B = 0x00;//stop,ICNC1 ICES1 – WGM13 WGM12 CS12 CS11 CS10

TCCR1C = 0x00;//FOC1A FOC1B FOC1C – – – – –

TCNT1H = 0xE3;

TCNT1L = 0xE0;

OCR1AH = 0x1C;

OCR1AL = 0x1F;

OCR1BH = 0x1C;

OCR1BL = 0x1F;

OCR1CH = 0x1C;

OCR1CL = 0x1F;

ICR1H = 0x00;

ICR1L = 0x00;

TCCR1B = 0x05;

// TIMSK |= 0x04;//enable 0verflow interrupt*/

}

void TC1_Set_PWM(unsigned int curF)

{

unsigned int temp;

if(curF==0)

{

//OCR1A = 0;

//OCR1B = 0;

TCCR1A=0;

}

else if((curF>=20)&&(curF<=2000))

{

temp = F_CPU/16/curF;

OCR1A=temp;

TCCR1A=(0< }

}

void Timer2_Init(void)

{

timer2_ticks = 0;

timer2_tickssec = 0;

TCCR2A = 0x00;

TCCR2B = 0x00;

TCNT2 = 0x00;

OCR2A = F_CPU/(1024-1)/20;//频率F_PWM

OCR2B = OCR2A/2;//占空比50%

//TCCR2A = 0xA3; //COM2A1 COM2A0 COM2B1 COM2B0 – – WGM21 WGM20

TCCR2B = 0xCF; //FOC2A FOC2B – – WGM22 CS22 CS21 CS20

// TCCR2 = 0x00;//stop,FOC2 WGM20 COM21 COM20 WGM21 CS22 CS21 CS20

// TCNT2 = 0xB8;//set count 10ms

// OCR2 = 0x47;

// TCCR2 = 0x05;//start,clkT0S/1024

// TIMSK|= 0x40;//enable 0verflow interrupt

}

void TC2_Set_PWM(unsigned int curF)

{//20~80为clkT0S/1024，80~300为clkT0S/256，300~2000为clkT0S/64

if(curF==0)

{

OCR2A = 0;

OCR2B = 0;

TCCR2A = 0;

}

else if((curF>=20)&&(curF<80))

{

OCR2A = F_CPU/(1024-1)/curF;

OCR2B = OCR2A/2;

TCCR2A = 0xA3;

TCCR2B = 0xCF;

}

else if((curF>=80)&&(curF<300))

{

OCR2A = F_CPU/(256-1)/curF;

OCR2B = OCR2A/2;

TCCR2A = 0xA3;

TCCR2B = 0xCE;

}

else if((curF>=300)&&(curF<=2000))

{

OCR2A = F_CPU/(64-1)/curF;

OCR2B = OCR2A/2;

TCCR2A = 0xA3;

TCCR2B = 0xCC;

}

void Timer3_Init(void)

{

unsigned int temp;

timer3_ticks = 0;

timer3_ticksmin = 0;

TCCR3A = 0x00;

TCCR3B = 0x00;

TCCR3C = 0x00;

TCNT3H = 0x00;

TCNT3L = 0x00;

temp = F_CPU/16/20;

OCR3A=temp;

//temp = temp/2;

//OCR3B=temp;

//OCR3C=temp;

//TCCR3A=(0< TCCR3B=(1< /*

TCCR3A = 0x00;//COM3A1 COM3A0 COM3B1 COM3B0 COM3C1 COM3C0 WGM31 WGM30

TCCR3B = 0x00;//stop,ICNC3 ICES3 – WGM33 WGM32 CS32 CS31 CS30

TCCR3C = 0x00;//FOC3A FOC3B FOC3C – – – – –

TCNT3H = 0xE3;

TCNT3L = 0xE0;//set count 1s

OCR3AH = 0x1C;

OCR3AL = 0x1F;

OCR3BH = 0x1C;

OCR3BL = 0x1F;

OCR3CH = 0x1C;

OCR3CL = 0x1F;

ICR3H = 0x00;

ICR3L = 0x00;

TCCR3B = 0x05;//start,clkT0S/1024

// ETIMSK|= 0x04;//enable 0verflow interrupt*/

}

void TC3_Set_PWM(unsigned int curF)

{

unsigned int temp;

if(curF==0)

{

//OCR3A = 0;

//OCR3B = 0;

TCCR3A=0;

}

else if((curF>=20)&&(curF<=2000))

{

temp = F_CPU/16/curF;

OCR3A=temp;

TCCR3A=(0< }

}

void Timer4_Init(void)

{

unsigned int temp;

timer4_ticks = 0;

timer4_ticksmin = 0;

TCCR4A = 0x00;

TCCR4B = 0x00;

TCCR4C = 0x00;

TCNT4H = 0x00;

TCNT4L = 0x00;

temp = F_CPU/16/20;

OCR4A=temp;

//temp = temp/2;

//OCR4B=temp;

//OCR4C=temp;

//TCCR4A=(0< TCCR4B=(1<}

void TC4_Set_PWM(unsigned int curF)

{

unsigned int temp;

if(curF==0)

{

//OCR4A = 0;

//OCR4B = 0;

TCCR4A=0;

}

else if((curF>=20)&&(curF<=2000))

{

temp = F_CPU/16/curF;

OCR4A=temp;

TCCR4A=(0< }

}

void Timer5_Init(void)

{

unsigned int temp;

timer5_ticks = 0;

timer5_ticksmin = 0;

TCCR5A = 0x00;

TCCR5B = 0x00;

TCCR5C = 0x00;

TCNT5H = 0x00;

TCNT5L = 0x00;

temp = F_CPU/16/20;

OCR5A=temp;

//temp = temp/2;

//OCR5B=temp;

//OCR5C=temp;

//TCCR5A=(0<

ATmega2560 单片机 PWM输出独立控制

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2019年10月21日 | ATmega2560单片机12路PWM输出的程序 每路PWM可独立控制

2019年10月21日 | ATmega2560单片机12路PWM输出的程序每路PWM可独立控制