PIC10F322 | Sahara's WebLog

PIC10F322でＬチカの第２弾せっかくだからPWMも使ってみる。

#include <xc.h>

// CONFIG
#pragma config FOSC = INTOSC    // Oscillator Selection bits (INTOSC oscillator: CLKIN function disabled)
#pragma config BOREN = OFF      // Brown-out Reset Enable (Brown-out Reset disabled)
#pragma config WDTE = OFF       // Watchdog Timer Enable (WDT disabled)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config MCLRE = OFF      // MCLR Pin Function Select bit (MCLR pin function is digital input, MCLR internally tied to VDD)
#pragma config CP = OFF         // Code Protection bit (Program memory code protection is disabled)
#pragma config LVP = OFF        // Low-Voltage Programming Enable (High-voltage on MCLR/VPP must be used for programming)
#pragma config LPBOR = OFF      // Brown-out Reset Selection bits (BOR disabled)
#pragma config BORV = LO        // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.)
#pragma config WRT = OFF        // Flash Memory Self-Write Protection (Write protection off)

#define _XTAL_FREQ 16000000

void interrupt intr(void) {
    INTCONbits.TMR0IF = 0;//Timer0 Overflow Interrupt Flag Clear
    TMR0 = 222;
    RA2 = ~RA2;
}

int main(void) {
    OSCCONbits.IRCF = 0b111;//16MHz
    ANSELA = 0b000;//for Digital I/O
    TRISAbits.TRISA0 = 0;//
    TRISAbits.TRISA1 = 0;//
    TRISAbits.TRISA2 = 0;//

    //Timer0
    OPTION_REGbits.PSA = 1;//Prescaler is disabled
    //OPTION_REGbits.PS = 111;//1:256
    OPTION_REGbits.T0CS = 0;//TMR0 Clock Source is Internal instruction cycle clock (FOSC/4)
    INTCONbits.GIE = 1;//Global Interrupt Enabled
    INTCONbits.PEIE = 1;//Peripheral Interrupt Enabled
    INTCONbits.TMR0IE = 1;//Timer0 Overflow Interrupt Enabled
    INTCONbits.TMR0IF = 0;//Timer0 Overflow Interrupt Flag Clear
    TMR0 = 222;

    //PWM1
    PR2 = 104;
    T2CONbits.TOUTPS = 0b0000;//Timer2 Output Postscaler = 1
    T2CONbits.T2CKPS = 0b00;//Timer2 Clock Prescale is 1
    T2CONbits.TMR2ON = 1;//Timer2 is on
    PWM1DCH = 0b00110100;
    PWM1DCL = 0b10;
    PWM1CONbits.PWM1EN = 1;//PWM Module Enabled
    PWM1CONbits.PWM1OE = 1;//Output to PWMx pin is enabled
    PIR1bits.TMR2IF = 0;

    while(1){
        RA1 = 1;
        __delay_ms(300);
        RA1 = 0;
        __delay_ms(300);
    }
}

#include <xc.h>

// CONFIG

#pragma config FOSC = INTOSC // Oscillator Selection bits (INTOSC oscillator: CLKIN function disabled)

#pragma config BOREN = OFF // Brown-out Reset Enable (Brown-out Reset disabled)

#pragma config WDTE = OFF // Watchdog Timer Enable (WDT disabled)

#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)

#pragma config MCLRE = OFF // MCLR Pin Function Select bit (MCLR pin function is digital input, MCLR internally tied to VDD)

#pragma config CP = OFF // Code Protection bit (Program memory code protection is disabled)

#pragma config LVP = OFF // Low-Voltage Programming Enable (High-voltage on MCLR/VPP must be used for programming)

#pragma config LPBOR = OFF // Brown-out Reset Selection bits (BOR disabled)

#pragma config BORV = LO // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.)

#pragma config WRT = OFF // Flash Memory Self-Write Protection (Write protection off)

#define _XTAL_FREQ 16000000

void interrupt intr(void) {

INTCONbits.TMR0IF = 0;//Timer0 Overflow Interrupt Flag Clear

TMR0 = 222;

RA2 = ~RA2;

}

int main(void) {

OSCCONbits.IRCF = 0b111;//16MHz

ANSELA = 0b000;//for Digital I/O

TRISAbits.TRISA0 = 0;//

TRISAbits.TRISA1 = 0;//

TRISAbits.TRISA2 = 0;//

//Timer0

OPTION_REGbits.PSA = 1;//Prescaler is disabled

//OPTION_REGbits.PS = 111;//1:256

OPTION_REGbits.T0CS = 0;//TMR0 Clock Source is Internal instruction cycle clock (FOSC/4)

INTCONbits.GIE = 1;//Global Interrupt Enabled

INTCONbits.PEIE = 1;//Peripheral Interrupt Enabled

INTCONbits.TMR0IE = 1;//Timer0 Overflow Interrupt Enabled

INTCONbits.TMR0IF = 0;//Timer0 Overflow Interrupt Flag Clear

TMR0 = 222;

//PWM1

PR2 = 104;

T2CONbits.TOUTPS = 0b0000;//Timer2 Output Postscaler = 1

T2CONbits.T2CKPS = 0b00;//Timer2 Clock Prescale is 1

T2CONbits.TMR2ON = 1;//Timer2 is on

PWM1DCH = 0b00110100;

PWM1DCL = 0b10;

PWM1CONbits.PWM1EN = 1;//PWM Module Enabled

PWM1CONbits.PWM1OE = 1;//Output to PWMx pin is enabled

PIR1bits.TMR2IF = 0;

while(1){

RA1 = 1;

__delay_ms(300);

RA1 = 0;

__delay_ms(300);

}

RA0はPWM1を使ってデューティー比50%の約38kHzのパルス。 RA1は__

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