控制AVR单片机5路PWM波形

现开发了单片机控制5路PWM波形，也可以同时控制15路直流三色灯板，按触摸屏顺序点亮的电路和程序，供大家参考。

电路为

单片机ATMEGA128控制5路PWM方波，按照74HC08逻辑编码输出15路PWM信号，一次按照迪文触摸屏点亮3种颜色灯板的5路发光信号。ULN2003提供12V电压。每个灯板通过一个CMOS管IR3205输出功率。一个74HC08通过一路PWM，这路PWM通过74HC08控制的继电器控制IR3205的开关，进而控制24V，13V,36V灯板的开关，灯板的亮度通过PWM波形的占空比调节电路的PCB如下

上面是单片机PCB，它和灯板PCB通过排线连接

图片

上面是灯板PCB。下面是单片机程序，程序用ICC-AVR开发，链接： https://pan.baidu.com/s/1X_7zIHR4K1ipaGRTviVtUw ;

提取码：so7m

复制这段内容后打开百度网盘手机App，操作更方便哦

//ICC-AVR application builder : 2010-6-22 15:14:03

// Target : M64A

// Crystal: 4.0000Mhz

修改宏定义以实现不同功能,

#include "main.h"

/*******************************************

向串口1发送单个数据，查询方式

*******************************************/

void TxUart1(unsigned char i)

{

//CLI(); //disable all interrupts

//DelayMs(1);

while (!(UCSR0A & (1<<UDRE0))); /* 等待发送缓冲器为空*/

UDR0 = i; /* 发送数据*/

//SEI(); //re-enable interrupts

}

/*******************************************

向串口0发送数组，查询方式

参数1:数组指针;

参数2:数组长度;

*******************************************/

void TxArrayUart1(unsigned char *ptr,unsigned char number)

{

//CLI(); //disable all interrupts

uchar i;

for(i = 0; i < number; i++)

{

TxUart1(ptr[i]);

}

//SEI(); //re-enable interrupts

}

/*******************************************

向串口1发送单个数据，查询方式

*******************************************

void TxUart1(unsigned char i)

{

//CLI(); //disable all interrupts

while (!(UCSR1A & (1<<UDRE1))); //等待发送缓冲器为空

UDR1 = i; //发送数据

//SEI(); //re-enable interrupts

}

/*******************************************

向串口0发送数组，查询方式

参数1:数组指针;

参数2:数组长度;

*******************************************

void TxArrayUart1(unsigned char *ptr,unsigned char number)

{

//CLI(); //disable all interrupts

uchar i;

for(i = 0; i < number; i++)

{

TxUart1(ptr[i]);

}

//SEI(); //re-enable interrupts

}

/*******************************************

数据接收，等待查询方式

*******************************************/

unsigned char uart_receive1(void)

{

while (!(UCSR1A & (1<<RXC1))); /* 等待接收数据*/

return UDR1; /* 获取并返回数据*/

}

//UART0 initialize

// desired baud rate: 9600

// actual: baud rate: 9615 (0.2%)

// char size: 8 bit

// parity: Disabled

void uart0_init(void)

{

UCSR0B = 0x00; //disable while setting baud rate

UCSR0A = 0x00;

UCSR0C = 0x06;

UBRR0L = 0x0C; //set baud rate lo

UBRR0H = 0x00; //set baud rate hi

UCSR0B = 0x98;

}

#pragma interrupt_handler uart0_rx_isr:iv_USART0_RXC

void uart0_rx_isr(void)

{

//uart has received a character in UDR

uart1_data = UDR0;

switch (uart1_counter)

{

case 0:

if (uart1_data == 0xaa)

uart1_counter ++;

else

uart1_counter = 0;

break;

case 1:

if ((uart1_data == 0x78) || (uart1_data == 0x79))

uart1_counter ++;

else

uart1_counter = 0;

button_type = uart1_data;

break;

case 2:

if (uart1_data == 0x00)

{

uart1_counter ++;

}

else

uart1_counter = 0;

break;

case 3:

uart1_counter ++;

button = uart1_data;

break;

case 4:

if (uart1_data == 0xcc)

uart1_counter ++;

else

uart1_counter = 0;

break;

case 5:

if (uart1_data == 0x33)

uart1_counter ++;

else

uart1_counter = 0;

break;

case 6:

if (uart1_data == 0xc3)

uart1_counter ++;

else

uart1_counter = 0;

break;

case 7:

uart1_counter = 0;

if (uart1_data == 0x3c)

{

switch(button)

{

case 0x57:

case 0x58:

case 0x63:

if(button_time == 0)

{

button_flag = 1;

button_time = 110;

}

break;

default:

if((button_time == 0) && (button_type == 0x78))

{

button_flag = 1;

}

break;

}

break;

default:

uart1_counter = 0;

break;

}

#pragma interrupt_handler uart1_rx_isr:iv_USART1_RXC

void uart1_rx_isr(void)

{

//uart has received a character in UDR

uart1_data = UDR1;

switch (uart1_counter)

{

case 0:

if (uart1_data == 0xaa)

uart1_counter ++;

else

uart1_counter = 0;

break;

case 1:

if ((uart1_data == 0x78) || (uart1_data == 0x9b))

uart1_counter ++;

else

uart1_counter = 0;

break;

case 2:

if ((uart1_data == 0x00) || (uart1_data == 0x5a))

{

uart1_counter ++;

if(uart1_data == 0x5a)

time_get = 1;

}

else

uart1_counter = 0;

break;

case 3:

if(time_get)

{

time[time_get - 1] = uart1_data;

if(time_get < 6)

time_get ++;

else

{

//time_get = 0;

uart1_counter ++;

}

else

{

uart1_counter ++;

button = uart1_data;

}

break;

case 4:

if (uart1_data == 0xcc)

uart1_counter ++;

else

uart1_counter = 0;

break;

case 5:

if (uart1_data == 0x33)

uart1_counter ++;

else

uart1_counter = 0;

break;

case 6:

if (uart1_data == 0xc3)

uart1_counter ++;

else

uart1_counter = 0;

break;

case 7:

uart1_counter = 0;

if (uart1_data == 0x3c)

{

if(time_get)

{

time_get = 0;

time_flag = 1;

}

else

button_flag = 1;

}

break;

default:

uart1_counter = 0;

break;

}

}*/

//UART1 initialize

// desired baud rate:19200

// actual baud rate:19231 (0.2%)

// char size: 8 bit

// parity: Disabled

void uart1_init(void)

{

UCSR1B = 0x00; //disable while setting baud rate

UCSR1A = 0x00;

UCSR1C = 0x06;

UBRR1L = 0x0C; //set baud rate lo

UBRR1H = 0x00; //set baud rate hi

UCSR1B = 0x98;

}

//TIMER0 initialize - prescale:32

// WGM: Normal

// desired value: 1KHz

// actual value: 1.000KHz (0.0%)

void timer0_init(void)

{

TCCR0 = 0x00; //stop

ASSR = 0x00; //set async mode

TCNT0 = 0x83; //set count

OCR0 = 0x7D;

// TCCR0 = 0x03; //start timer

}

#pragma interrupt_handler timer0_ovf_isr:iv_TIM0_OVF

void timer0_ovf_isr(void)

{

TCNT0 = 0x83; //reload counter value

if(ms)

ms--;

}

//TIMER1 initialize - prescale:64

// WGM: 0) Normal, TOP=0xFFFF

// desired value: 1KHz

// actual value: 1.008KHz (0.8%)

void timer1_init(void)

{

TCCR1B = 0x00; //stop

TCNT1H = 0xFF; //setup

TCNT1L = 0xC2;

OCR1AH = 0x00;

OCR1AL = 0x3E;

OCR1BH = 0x00;

OCR1BL = 0x3E;

OCR1CH = 0x00;

OCR1CL = 0x3E;

ICR1H = 0x00;

ICR1L = 0x3E;

TCCR1A = 0x00;

TCCR1B = 0x03; //start Timer

}

#pragma interrupt_handler timer1_ovf_isr:iv_TIM1_OVF

void timer1_ovf_isr(void)

{

//TIMER1 has overflowed

TCNT1H = 0xFF; //reload counter high value

TCNT1L = 0xC2; //reload counter low value

if(laser_ms)

laser_ms --;

if(button_time)

button_time --;

if(rf_out_time)

{

rf_out_time --;

if(RF_TYPE)

RFRUN_L;

else

RFCTL_L;

}

else

{

//if(RF_TYPE)

RFRUN_H;

//else

RFCTL_H;

}

cold_count = (cold_count < 3) ? (cold_count + 1) : 0;

if(cold_count < cold_max)

COLD_L;

else

COLD_H;

}

//TIMER2 initialize - prescale:1024

// WGM: Normal

// desired value: 20Hz

// actual value: 20.032Hz (0.2%)

void timer2_init(void)

{

TCCR2 = 0x00; //stop

TCNT2 = 0x3D; //setup

OCR2 = 0xC3;

TCCR2 = 0x05; //start

}

#pragma interrupt_handler timer2_ovf_isr:iv_TIM2_OVF

void timer2_ovf_isr(void)

{

TCNT2 = 0x3D; //reload counter value

WDR ();

if(ad_time < 20)

{

ad_time++;

}

else

{

ad_time = 0;

if(miniter == 60)

{

miniter = 0;

total_time ++;

EEPROM_write(0x110,total_time>>16);

EEPROM_write(0x111,(unsigned char)total_time>>8);

EEPROM_write(0x112,(unsigned char)total_time);

}

else

miniter ++;

if(lamp_ok)

{

if(miniter_rdy == 60)

{

miniter_rdy = 0;

total_time ++;

EEPROM_write(0x113,total_time_rdy >> 16);

EEPROM_write(0x114,(unsigned char)total_time_rdy >> 8);

EEPROM_write(0x115,(unsigned char)total_time_rdy);

}

else

miniter_rdy ++;

}

/*每一秒启动一次温度采集*/

ADCSRA = 0xcf;

}

if(beep_time)

{

beep_time--;

BEEP_L;

}

else

BEEP_H;

}

//Watchdog initialize

// prescale: 512K

void watchdog_init(void)

{

WDR (); //this prevents a timeout on enabling

WDTCR |= (1<<WDCE) | (1<<WDE);/* 30-Oct-2006 Umesh*/

WDTCR = 0x0D; //WATCHDOG ENABLED - dont forget to issue WDRs

}

void port_init(void)

{

PORTA = 0xFF;

DDRA = 0xFF;

PORTB = 0xFF;

DDRB = 0xFF;

PORTC = 0x0E; //m103 output only

DDRC = 0x0F;

PORTD = 0x00;

DDRD = 0x93;

PORTE = 0x00;

DDRE = 0x00;

PORTF = 0x01;

DDRF = 0x01;

PORTG = 0x00;

DDRG = 0x13;

}

#pragma interrupt_handler int0_isr:iv_INT0

void int0_isr(void)

{

//external interupt on INT0

}

//ADC initialize

// Conversion time: 16uS

void adc_init(void)

{

ADCSRA = 0x00; //disable adc

ADMUX = 0xc1; //select adc input 1

ACSR = 0x80;

ADCSRA = 0xcf;//|| 0x40;

}

#pragma interrupt_handler adc_isr:iv_ADC

void adc_isr(void)

{

//conversion complete, read value (int) using...

ad_value=ADCL; //Read 8 low bits first (important)

ad_value|=(int)ADCH << 8; //read 2 high bits and shift into top byte

temp_flag = 1;

}

//call this routine to initialize all peripherals

void init_devices(void)

{

//stop errant interrupts until set up

CLI(); //disable all interrupts

XDIV = 0x00; //xtal divider

XMCRA = 0x00; //external memory

port_init();

//watchdog_init();

//adc_init();

//timer0_init();

//timer1_init();

//timer2_init();

uart0_init();

uart1_init();

MCUCR = 0x00;

EICRA = 0x00; //extended ext ints

EICRB = 0x00; //extended ext ints

EIMSK = 0x00;

TIMSK = 0x45; //timer interrupt sources

ETIMSK = 0x00; //extended timer interrupt sources

SEI(); //re-enable interrupts

//all peripherals are now initialized

}

/************************************************

发送需要显示的字符/坐标到液晶控制器;

参数1:坐标X;

参数2:坐标Y;

参数3:字符串数组;

************************************************/

void DisString(unsigned short x,unsigned short y,unsigned int word_color,unsigned int ground_color,unsigned char big,char * string)

{

unsigned char i = 0;

SetColor(word_color,ground_color);

//AA 55 00 00 00 00 49 CC 33 C3 3C

TxUart1(0xaa);

if(big)

TxUart1(0x55);

else

TxUart1(0x6f);

TxUart1( (uchar)((x*EIGHT_SWITCH) >> 8) );

TxUart1( (uchar)(x*EIGHT_SWITCH) );

TxUart1( (uchar)((y*EIGHT_SWITCH) >> 8) );

TxUart1( (uchar)(y*EIGHT_SWITCH) );

while(string[i] != 0)

{

TxUart1(string[i]);

i++;

}

TxUart1(0xcc);

TxUart1(0x33);

TxUart1(0xc3);

TxUart1(0x3c);

}

控制AVR单片机5路PWM波形

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