Project mẫu AVR 2

// Noise Canceler: Off // Input Capture on Rising Edge // Timer 1 Overflow Interrupt: On // Input Capture Interrupt: On // Compare A Match Interrupt: Off // Compare B Match Interrupt: Of

Project mẫu AVR (phần 2)

Viết bởi: le_hieu_29 - 19/03/2012

13.Pulse period by timer1

• Sơ đồ mạch điện:

Sơ đồ mạch điện.

• Chương trình mẫu:

Chip type : ATmega32

Program type : Application

Clock frequency : 6.000000 MHz

Memory model : Small

External SRAM size : 0

Data Stack size : 512

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

#include "mega32.h"

// Standard Input/Output functions

#include "stdio.h"

unsigned char ov_counter;

unsigned int starting_edge, ending_edge;

unsigned long clocks;

unsigned int period_out;

bit done = 0;

// Timer 1 overflow interrupt service routine

interrupt [TIM1_OVF] void timer1_ovf_isr(void)

{

// Place your code here

++ov_counter;

}

// Timer 1 input capture interrupt service routine

interrupt [TIM1_CAPT] void timer1_capt_isr(void)

{

// Place your code here

ending_edge = (unsigned int)ICR1H*256 + (unsigned int)ICR1L;

clocks = (unsigned long)ending_edge \

// Declare your local variables here

// Input/Output Ports initialization

// Port A initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTA=0x00;

DDRA=0x00;

// Port B initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTB=0x00;

DDRB=0x00;

// Port C initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTC=0x00;

DDRC=0x00;

// Port D initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTD=0x00;

DDRD=0x00;

// Timer/Counter 0 initialization

// Clock source: System Clock

// Clock value: Timer 0 Stopped

// Mode: Normal top=FFh

// OC0 output: Disconnected

// Mode: Normal top=FFFFh

// OC1A output: Discon

// OC1B output: Discon

// Noise Canceler: Off

// Input Capture on Rising Edge

// Timer 1 Overflow Interrupt: On

// Input Capture Interrupt: On

// Compare A Match Interrupt: Off

// Compare B Match Interrupt: Off

// Clock source: System Clock

// Clock value: Timer 2 Stopped

// Mode: Normal top=FFh

// OC2 output: Disconnected

// USART Mode: Asynchronous

// USART Baud rate: 9600

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: OffACSR=0x80;

Sơ đồ mạch điện.

• Chương trình mẫu:

Chip type : ATmega32

Program type : Application

Clock frequency : 7.372800 MHz

Memory model : Small

External SRAM size : 0

Data Stack size : 512

// Declare your global variables here

bit adc_done = 0; // Global ADC done flag bit

// ADC interrupt service routine

interrupt [ADC_INT] void adc_isr(void)

{

unsigned int adc_result;

// Read the AD conversion result

adc_result = ADCW;

// Always clear ADC IF bit

ADCSRA |= 0x10;

// print this value

printf("Done interrupt! ADC value = %d\n\r",adc_result);

// Set done bit

adc_done = 1;

}

// Trigger ADC conversion

void adc_trigger_conv(unsigned char adc_input)

// Declare your local variables here

// Input/Output Ports initialization

// Port A initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTA=0x00;

DDRA=0x00;

// Port B initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTB=0x00;

DDRB=0x00;

// Port C initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTC=0x00;

DDRC=0x00;

// Port D initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTD=0x00;

DDRD=0x00;

// Timer/Counter 0 initialization

// Clock source: System Clock

// Clock value: Timer 0 Stopped

// Mode: Normal top=FFh

// OC0 output: Disconnected

TCCR0=0x00;

TCNT0=0x00;

OCR0=0x00;

// Timer/Counter 1 initialization

// Clock source: System Clock

// Clock value: Timer 1 Stopped

// Mode: Normal top=FFFFh

// OC1A output: Discon

// OC1B output: Discon

// Noise Canceler: Off

// Input Capture on Falling Edge

// Timer 1 Overflow Interrupt: Off

// Input Capture Interrupt: Off

// Compare A Match Interrupt: Off

// Compare B Match Interrupt: Off

// Clock source: System Clock

// Clock value: Timer 2 Stopped

// Mode: Normal top=FFh

// OC2 output: Disconnected

// USART Baud rate: 9600

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: OffACSR=0x80;

SFIOR=0x00;

// ADC initialization

// ADC Clock frequency: 115.200 kHz

// ADC Voltage Reference: AREF pin

Sơ đồ mạch điện.

• Chương trình mẫu:

Chip type : ATmega32

Program type : Application

Clock frequency : 7.372800 MHz

Memory model : Small

External SRAM size : 0

Data Stack size : 512

// Here, we choose ADC0 as Neg Input

// ADC1 as Pos Input

// Gain set to 10x

// Look up on table in datasheet > MUX4:0 = 0b01001

#define ADC_DIFF_TYPE (0b01001)

// Convert value from ADC data register with its sign (+/-)

int convert_adc_value(unsigned int adc_10bit_input_value)

int result;

result = (int)(adc_10bit_input_value & 0x1FF);

result = (adc_10bit_input_value & (1 << 9)) ? (-(512 - result)) : result;

ADMUX = ADC_VREF_TYPE | ADC_DIFF_TYPE;

// Start the AD conversion

ADCSRA|=0x40;

// Wait for the AD conversion to complete

while ((ADCSRA & 0x10)==0);

// Declare your local variables here

unsigned int u16_adc;

DDRA=0x00;

// Port B initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTB=0x00;

DDRB=0x00;

// Port C initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTC=0x00;

DDRC=0x00;

// Port D initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTD=0x00;

DDRD=0x00;

// Timer/Counter 0 initialization

// Clock source: System Clock

// Clock value: Timer 0 Stopped

// Mode: Normal top=FFh

// OC0 output: Disconnected

TCCR0=0x00;

TCNT0=0x00;

OCR0=0x00;

// Timer/Counter 1 initialization

// Clock source: System Clock

// Clock value: Timer 1 Stopped

// Mode: Normal top=FFFFh

// OC1A output: Discon

// OC1B output: Discon

// Noise Canceler: Off

// Input Capture on Falling Edge

// Timer 1 Overflow Interrupt: Off

// Input Capture Interrupt: Off

// Compare A Match Interrupt: Off

// Compare B Match Interrupt: Off

// Clock source: System Clock

// Clock value: Timer 2 Stopped

// Mode: Normal top=FFh

// OC2 output: Disconnected

// USART initialization

// Communication Parameters: 8 Data, 1 Stop, No Parity// USART Receiver: On

// USART Transmitter: On

// USART Mode: Asynchronous

// USART Baud rate: 9600

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: OffACSR=0x80;

SFIOR=0x00;

// ADC initialization

// ADC Clock frequency: 115.200 kHz

// ADC Voltage Reference: AREF pin

Sơ đồ mạch điện.

• Chương trình mẫu:

Chip type : ATmega32

Program type : Application

Clock frequency : 7.372800 MHz

Memory model : Small

External SRAM size : 0

Data Stack size : 512

-// ADSRA register definitions

#define ADEN (1 << 7) // ADC Enable

#define ADSC (1 << 6) // ADC Start Conversion

#define ADATE (1 << 5) // ADC Auto Trigger Enable

#define ADIF (1 << 4) // ADC Interrupt Flag

#define ADIE (1 << 3) // ADC Interrupt Enable

#define ADPS2 (1 << 2) // ADC Prescale bit 2

#define ADPS1 (1 << 1) // ADC Prescale bit 1

#define ADPS0 (1) // ADC Prescale bit 0

// SFIOR register definitions

#define ADTS2 (1 << 7) // ADC Trigger Source bit 2

#define ADTS1 (1 << 6) // ADC Trigger Source bit 1

#define ADTS0 (1 << 5) // ADC Trigger Source bit 0

#define ADTS_MASK (ADTS2 | ADTS1 | ADTS0) // ADC Trigger Source Bits Mask// GIFR register definitions

#define INT0 (1 << 6) // INT0

#define ADC_VREF_TYPE 0x00

// Global varables

-// ADC interrupt service routine

interrupt [ADC_INT] void adc_isr(void)

{

unsigned int adc_data;

// Read the AD conversion result

adc_data=ADCW;

// Place your code here

printf("Conversion done! Value = %d\n\r",adc_data);

// Clear INT0 flag for next auto trigger by INT0

GIFR = INT0;

}

// Configure ADC channel that conversion will be trigger to

// convert ADC for

void config_adc_channel(unsigned char adc_input)

// Declare your local variables here

unsigned char temp;

// Input/Output Ports initialization

// Port A initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTA=0x00;

DDRA=0x00;

// Port B initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTB=0x00;

DDRB=0x00;

// Port C initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T

// Timer/Counter 0 initialization

// Clock source: System Clock

// Clock value: Timer 0 Stopped

// Mode: Normal top=FFh

// OC0 output: Disconnected

TCCR0=0x00;

TCNT0=0x00;

OCR0=0x00;

// Timer/Counter 1 initialization

// Clock source: System Clock

// Clock value: Timer 1 Stopped

// Mode: Normal top=FFFFh

// OC1A output: Discon

// OC1B output: Discon

// Noise Canceler: Off

// Input Capture on Falling Edge

// Timer 1 Overflow Interrupt: Off

// Input Capture Interrupt: Off

// Compare A Match Interrupt: Off

// Compare B Match Interrupt: Off

// Clock source: System Clock

// Clock value: Timer 2 Stopped

// Mode: Normal top=FFh

// OC2 output: Disconnected

// INT0 Mode: Falling Edge

// INT1: Off

// INT2: Off

GICR=0x00; // Disable INT0 Request to Global Interrupt

MCUCR=0x02; // Falling Edge on INT0

MCUCSR=0x00;

GIFR=0x40; // Clear INT0 Interrupt Flag

// Timer(s)/Counter(s) Interrupt(s) initialization

// USART Mode: Asynchronous

// USART Baud rate: 9600

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: OffACSR=0x80;

SFIOR=0x00;

// ADC initialization

// ADC Clock frequency: 115.200 kHz

// ADC Voltage Reference: AREF pin

ADMUX=ADC_VREF_TYPE;

// Enable Auto trigger conversion ADCSRA = 0x8E | ADATE;

-// Configure trigger source

-// Read out and mask ADTS[2 0] bit in the current status of SFIORtemp = SFIOR & (~(ADTS_MASK));

// Choose External Interrupt 0 (see datasheet)

// Place your code here

Chip type : ATmega32

Program type : Application

Clock frequency : 7.372800 MHz

Memory model : Small

External SRAM size : 0

Data Stack size : 512

#define ADC_VREF_TYPE 0x00

// Read the AD conversion result

unsigned int read_adc(unsigned char adc_input)

{

ADMUX=adc_input|ADC_VREF_TYPE;

// Start the AD conversion

ADCSRA|=0x40;

// Wait for the AD conversion to complete

while ((ADCSRA & 0x10)==0);

// Declare your local variables here

unsigned int adc_value; // ADC result

float lm35_voltage; // Voltage on Output of LM35

unsigned int lm35_temp; // Current temperature

char buff[10]; // temp buff hold conversion from float number to string// Input/Output Ports initialization

// Port A initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTA=0x00;

DDRA=0x00;

// Port B initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTB=0x00;

DDRB=0x00;

// Port C initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTC=0x00;

DDRC=0x00;

// Port D initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTD=0x00;

DDRD=0x00;

// Timer/Counter 0 initialization

// Clock source: System Clock

// Clock value: Timer 0 Stopped

// Mode: Normal top=FFh

// OC0 output: Disconnected

TCCR0=0x00;

TCNT0=0x00;

OCR0=0x00;

// Timer/Counter 1 initialization

// Clock source: System Clock

// Clock value: Timer 1 Stopped

// Mode: Normal top=FFFFh

// OC1A output: Discon

// OC1B output: Discon

// Noise Canceler: Off

// Input Capture on Falling Edge

// Timer 1 Overflow Interrupt: Off

// Input Capture Interrupt: Off

// Compare A Match Interrupt: Off

// Compare B Match Interrupt: Off

// Clock source: System Clock

// Clock value: Timer 2 Stopped

// Mode: Normal top=FFh

// OC2 output: Disconnected

// USART Baud rate: 9600

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: Off

ACSR=0x80;

SFIOR=0x00;

// ADC initialization

// ADC Clock frequency: 115.200 kHz

// ADC Voltage Reference: AREF pin

printf("Voltage on output of LM35: %sV\n\r",buff);

// Calc to temperature - note that LM35 has Linear +10.0 mV/C scale factor lm35_temp = (unsigned int)((float)adc_value*500/1023 + 0.5);

printf("Current Temperature: %d.C\n\r",lm35_temp);

Sơ đồ mạch điện.

• Chương trình mẫu:

Chip type : ATmega32

Program type : Application

Clock frequency : 7.372800 MHz

Memory model : Small

External SRAM size : 0

Data Stack size : 512

// Read the AD conversion result

unsigned int read_adc(unsigned char adc_input)

while ((ADCSRA & 0x10)==0);

ADCSRA|=0x10;

return ADCW;

}

// Declare your global variables here

unsigned int adc_value;

DDRA=0x00;

// Port B initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTB=0x00;

DDRB=0x00;

// Port C initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTC=0x00;

DDRC=0x00;

// Port D initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In // State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T PORTD=0x00;

DDRD=0x00;

// Timer/Counter 0 initialization

// Clock source: System Clock

// Clock value: Timer 0 Stopped

// Mode: Normal top=FFh

// OC0 output: Disconnected

TCCR0=0x00;

TCNT0=0x00;

OCR0=0x00;

// Timer/Counter 1 initialization

// Clock source: System Clock

// Clock value: Timer 1 Stopped

// Mode: Normal top=FFFFh

// OC1A output: Discon

// OC1B output: Discon.

// Noise Canceler: Off

// Input Capture on Falling Edge

// Timer 1 Overflow Interrupt: Off

// Input Capture Interrupt: Off

// Compare A Match Interrupt: Off

// Compare B Match Interrupt: Off

// Clock source: System Clock

// Clock value: Timer 2 Stopped

// Mode: Normal top=FFh

// OC2 output: Disconnected

// USART Mode: Asynchronous

// USART Baud rate: 9600

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: Off

SFIOR=0x00;

// ADC initialization

// ADC Clock frequency: 115.200 kHz

// ADC Voltage Reference: AREF pin

• Chương trình mẫu:

Chip type : ATmega32

Program type : Application

Clock frequency : 7.372800 MHz

Memory model : Small

External SRAM size : 0

Data Stack size : 512

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

#include "mega32.h"

#include "delay.h"

#define ADC_VREF_TYPE 0x00

// Read the AD conversion result

unsigned int read_adc(unsigned char adc_input)

{

ADMUX=adc_input|ADC_VREF_TYPE;

// Start the AD conversion

ADCSRA|=0x40;

// Wait for the AD conversion to complete

while ((ADCSRA & 0x10)==0);

// Declare your local variables here

unsigned int vr_value; // ADC result of voltage getting from VR

unsigned long int led_bar_value; // Temp led bar value after calculating

// Input/Output Ports initialization

// Port A initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In

// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T

// Clock source: System Clock

// Clock value: Timer 0 Stopped

// Mode: Normal top=FFh

// OC0 output: Disconnected

TCCR0=0x00;

TCNT0=0x00;

OCR0=0x00;

// Timer/Counter 1 initialization

// Clock source: System Clock

// Clock value: Timer 1 Stopped

// Mode: Normal top=FFFFh

// OC1A output: Discon

// OC1B output: Discon

// Noise Canceler: Off

// Input Capture on Falling Edge

// Timer 1 Overflow Interrupt: Off

// Input Capture Interrupt: Off

// Compare A Match Interrupt: Off

// Compare B Match Interrupt: Off

// Clock source: System Clock

// Clock value: Timer 2 Stopped

// Mode: Normal top=FFh

// OC2 output: Disconnected

ASSR=0x00;

TCCR2=0x00;

TCNT2=0x00;

OCR2=0x00;

// External Interrupt(s) initialization

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: Off

ACSR=0x80;

SFIOR=0x00;

// ADC initialization

// ADC Clock frequency: 115.200 kHz

// ADC Voltage Reference: AREF pin

// Here, we have 24 leds, so we assume 24 steps or 24 level

// Note that, the result is always be rounded DOWN, so 0.5 is added to this result vr_value = (unsigned int)(((float)vr_value * 24) / 1023 + 0.5);

// we must fill '1' value from 0 to current step

led_bar_value = (1 << ((unsigned long int)vr_value)) - 1;

// Send each byte of this value to each port

PORTB = led_bar_value & 0xFF;

PORTC = (led_bar_value >> 8) & 0xFF;

PORTD = (led_bar_value >> 16) & 0xFF;

// Delay for a while

Sơ đồ mạch điện.

• Chương trình mẫu:

Chip type : ATmega32

Program type : Application

Clock frequency : 7.372800 MHz

Memory model : Small

External SRAM size : 0

Data Stack size : 512