// FOSC #pragma config FOSFPR = FRC_PLL4 // Oscillator (Internal Fast RC (No change to Primary Osc Mode bits)) #pragma config FCKSMEN = CSW_FSCM_OFF // Clock Switching and Monitor (Sw Disabled, Mon Disabled)  // FWDT #pragma config FWPSB = WDTPSB_16 // WDT Prescaler B (1:16) #pragma config FWPSA = WDTPSA_512 // WDT Prescaler A (1:512) #pragma config WDT = WDT_OFF // Watchdog Timer (Disabled)  // FBORPOR #pragma config FPWRT = PWRT_64 // POR Timer Value (64ms) #pragma config BODENV = BORV27 // Brown Out Voltage (2.7V) #pragma config BOREN = PBOR_ON // PBOR Enable (Enabled) #pragma config MCLRE = MCLR_DIS // Master Clear Enable (Enabled)  // FGS #pragma config GWRP = GWRP_OFF // General Code Segment Write Protect (Disabled) #pragma config GCP = CODE_PROT_OFF // General Segment Code Protection (Disabled)  // FICD #pragma config ICS = ICS_PGD // Comm Channel Select (Use PGC/EMUC and PGD/EMUD)  // #pragma config statements should precede project file includes. // Use project enums instead of #define for ON and OFF. #include <xc.h>  unsigned int counter = 0; // Initialize counter int main() { /* OSCCON oscillator setting register */ OSCCONbits.CF = 0; // Not detected clock failure OSCCONbits.COSC = 0b111; // PLL oscillator which was defined FOSFPR OSCCONbits.LOCK = 1; // PLL is in lock OSCCONbits.LPOSCEN = 0; // Secondary oscillator is disabled OSCCONbits.NOSC = 0b111; // New PLL oscillator which was defined OSCCONbits.OSWEN = 0; // Switch is completed OSCCONbits.POST = 0; // Postscaler does not alter clock /* IO Setting */ TRISA = 0; // Digital out TRISB = 0; // Digital out TRISC = 0; // Digital out TRISD = 0; // Digital out TRISF = 0; // Digital out TRISFbits.TRISF2 = 1; // RX pin setting TRISFbits.TRISF3 = 0; // TX pin setting TRISBbits.TRISB0 = 1; // Analog in TRISBbits.TRISB1 = 1; // Analog in TRISBbits.TRISB2 = 1; // Analog in TRISBbits.TRISB3 = 1; // Analog in TRISBbits.TRISB4 = 1; // Analog in TRISBbits.TRISB5 = 1; // Analog in TRISBbits.TRISB8 = 1; // Analog in TRISBbits.TRISB9 = 1; // Analog in TRISBbits.TRISB10 = 1; // Analog in TRISBbits.TRISB11 = 1; // Analog in TRISBbits.TRISB12 = 1; // Analog in /*Timer Setting Register(ADC Sampling Time Management)*/ T1CONbits.TON = 0; //Timer OFF. タイマーOFF. T1CONbits.TCS = 0; //Use internal Clock. 内部クロックを使用. T1CONbits.TGATE = 0; //Gate time accumulate is off.ゲートタイム累積無効.  T1CONbits.TSIDL = 0; //Continue on IDLE mode. アイドルモードでタイマ継続. T1CONbits.TSYNC = 0; //NONE. 無視(TCS = 0のとき) T1CONbits.TCKPS = 0b11; //prescaler 256 /*Interrupt Setting*/ PR1 = 28; //700Hz IPC0bits.T1IP = 5; //Interrupt priority is 5. 優先順位5, 高いほうが優先順位が高い. IEC0bits.T1IE = 1; //Timer 1 interrupt is enable. タイマ1割り込みON. IFS0bits.T1IF = 0; //Timer 1 Interrupt flag is off. タイマ1割り込みフラグ0。 T1CONbits.TON = 1; //Timer ON /* UART Setting */ U1MODEbits.UARTEN = 1; //UART disabled U1MODEbits.USIDL = 0; //Run UART on IDLE mode U1MODEbits.ALTIO = 0; //Alternate pin is enabled U1MODEbits.WAKE = 0; //Wakeup is disabled U1MODEbits.LPBACK = 0; //Loopback mode is disabled U1MODEbits.ABAUD = 1; //U1RX to Capture U1MODEbits.PDSEL = 0; //No parity 8-bit U1MODEbits.STSEL = 0; //1STOP bit U1STAbits.UTXISEL = 1; //When buffer is empty U1STAbits.UTXBRK = 0; //Transfer break is normal mode U1STAbits.URXISEL = 0b00; //When accepting any character, interrupt is occured U1STAbits.ADDEN = 0; //Address detector is disabled U1STAbits.OERR = 0; //Not Overrun (First write only) U1BRG = 49; U1MODEbits.UARTEN = 1; //UART disabled U1STAbits.UTXEN = 1; //UART TX is enabled. PORTFbits.RF5 = 1; // Invert bit while(1); } int flagLED = 0; int counterLED = 0; void __attribute__((interrupt, shadow, auto_psv)) _T1Interrupt(void) { IFS0bits.T1IF = 0; // Flag is low counterLED++; if(counterLED >= 1000) { printf("S\n"); if (flagLED == 0) flagLED = 1; else flagLED = 0; PORTFbits.RF5 = flagLED; counterLED = 0; } }