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@mipsparc mipsparc/mascon_read.c
Last active Dec 2, 2018

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DE10/DE15に使用されるMC45A主幹制御器などからノッチを読み取るやつ(PIC16F1579向け)
// PIC16F1579 Configuration Bit Settings
// CONFIG1
#pragma config FOSC = INTOSC // Oscillator Selection Bits (INTOSC oscillator; I/O function on CLKIN pin)
#pragma config WDTE = OFF // Watchdog Timer Enable (WDT disabled)
#pragma config PWRTE = ON // Power-up Timer Enable (PWRT enabled)
#pragma config MCLRE = OFF // MCLR Pin Function Select (MCLR/VPP pin function is digital input)
#pragma config CP = OFF // Flash Program Memory Code Protection (Program memory code protection is disabled)
#pragma config BOREN = ON // Brown-out Reset Enable (Brown-out Reset enabled)
#pragma config CLKOUTEN = OFF // Clock Out Enable (CLKOUT function is disabled. I/O or oscillator function on the CLKOUT pin)
// CONFIG2
#pragma config WRT = OFF // Flash Memory Self-Write Protection (Write protection off)
#pragma config PPS1WAY = ON // PPSLOCK bit One-Way Set Enable bit (PPSLOCKED Bit Can Be Cleared & Set Once)
#pragma config PLLEN = OFF // PLL Disabled
#pragma config STVREN = ON // Stack Overflow/Underflow Reset Enable (Stack Overflow or Underflow will cause a Reset)
#pragma config BORV = LO // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.)
#pragma config LPBOREN = OFF // Low Power Brown-out Reset enable bit (LPBOR is disabled)
#define _XTAL_FREQ 16000000
#include <xc.h>
#include <stdio.h>
void putch(char write_char)
{
while(!TXSTAbits.TRMT);
TXREG = write_char;
}
void main(void)
{
OSCCON = 0b01111011; // 16MHz
ANSELC = 0b00000000; // All digital
TRISC = 0b11111111; // PORTC all input
PORTC = 0b00000000; // PORTC init
ANSELB = 0b00000000;
TRISB = 0b00010000; // RB4 input
PORTB = 0b00000000;
TRISA = 0b00000000;
RA0PPS = 0b00001001; // RA0 UART TX
TXSTA = 0b00100000; // 8bit UART
RCSTA = 0b10010000;
SPBRG = 25; // 16MHz 9600bps
INTCONbits.GIE = 1; // accept interrupt
PIE1bits.TXIE = 1; // accept TX interrupt
unsigned char mascon = 0;
unsigned char txbyte;
while (1) {
if (PORTCbits.RC3 == 1 && (PORTC & 0b00010111)) { // 18????ON
mascon = (PORTCbits.RC4 << 3) + (PORTC & 0b00000111) - 1;
} else {
mascon = 0;
}
txbyte = (PORTC & 0b11100000) + (PORTBbits.RB4 << 4) + mascon;
putch("%c", txbyte);
while(!TXSTAbits.TRMT);
__delay_ms(100);
}
return;
}
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