Contents

持ち物

PIC Kit 5
- 2024年時点で最新の公式の書き込み器。18000円くらいして震える。
Mac(M1 Max)
MPLAB X IDE v6.20
XC8(v2.46)
- 8ビットマイコン用のコンパイラ
PIC16F1827
抵抗
- 10k x 1: プルアップ抵抗。MCLRのピンとVDDの間に設置
- 330 x 1: LEDに直列接続で繋げる抵抗
LED
- 5mm青色LED。基本手元にあるもので良い。

最初何から始めればいいかわからなかったけど結局できたからそのメモ。

MPLAB X IDEをインストールして新規でプロジェクトを作成。Userフォルダ「MPLABXProjects」直下に

L-chika PIC16F1827の名前でプロジェクトを作った。

勝手に中に色々ファイル作られる。main.cは自分で今回のプログラム用に作ったC言語ファイル。この中に以下のコードを記述


// PIC16F1827 Configuration Bit Settings

// 'C' source line config statements

// CONFIG1
#pragma config FOSC = HS        // Oscillator Selection (HS Oscillator, High-speed crystal/resonator connected between OSC1 and OSC2 pins)
#pragma config WDTE = OFF       // Watchdog Timer Enable (WDT disabled)
#pragma config PWRTE = OFF      // Power-up Timer Enable (PWRT disabled)
#pragma config MCLRE = ON       // MCLR Pin Function Select (MCLR/VPP pin function is MCLR)
#pragma config CP = OFF         // Flash Program Memory Code Protection (Program memory code protection is disabled)
#pragma config CPD = OFF        // Data Memory Code Protection (Data 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)
#pragma config IESO = ON        // Internal/External Switchover (Internal/External Switchover mode is enabled)
#pragma config FCMEN = ON       // Fail-Safe Clock Monitor Enable (Fail-Safe Clock Monitor is enabled)

// CONFIG2
#pragma config WRT = OFF        // Flash Memory Self-Write Protection (Write protection off)
#pragma config PLLEN = ON       // PLL Enable (4x PLL enabled)
#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 DEBUG = OFF      // In-Circuit Debugger Mode (In-Circuit Debugger disabled, ICSPCLK and ICSPDAT are general purpose I/O pins)
#pragma config LVP = ON         // Low-Voltage Programming Enable (Low-voltage programming enabled)

// #pragma config statements should precede project file includes.
// Use project enums instead of #define for ON and OFF.

#include <xc.h>
#define _XTAL_FREQ 4000000 //4MHz

void main(void) {
  TRISA=0x00;
  //PORTAbits.RA0 = 1;


  while(1){
    __delay_ms(5);
    RA0 = 1;
    __delay_ms(5);
    RA0 = 0;
  }

  return;

}

5msでLEDをチカチカさせよ、と。細かいマイコンの設定情報が大部分を占めているが他の参考サイトから引っ張ってきたもので詳しくよくわかってない。一旦そのままでも問題なかろう。

ビルドする

プロダクション用に真ん中のClean and Build Projectを実行。

うまくいけば下記のような表示に。


CLEAN SUCCESSFUL (total time: 56ms)
make -f nbproject/Makefile-default.mk SUBPROJECTS= .build-conf
make  -f nbproject/Makefile-default.mk dist/default/production/L-chika_PIC16F1827.X.production.hex
make[2]: Entering directory '/Users/kilian/MPLABXProjects/L-chika PIC16F1827.X'
"/Applications/microchip/xc8/v2.46/bin/xc8-cc"  -mcpu=16F1827 -c   -mdfp="/Applications/microchip/mplabx/v6.20/packs/Microchip/PIC12-16F1xxx_DFP/1.7.242/xc8"  -fno-short-double -fno-short-float -O0 -fasmfile -maddrqual=ignore -xassembler-with-cpp -mwarn=-3 -Wa,-a -DXPRJ_default=default  -msummary=-psect,-class,+mem,-hex,-file  -ginhx32 -Wl,--data-init -mno-keep-startup -mno-osccal -mno-resetbits -mno-save-resetbits -mno-download -mno-stackcall -mno-default-config-bits   -std=c99 -gdwarf-3 -mstack=compiled:auto:auto     -o build/default/production/main.p1 main.c 
make[2]: Leaving directory '/Users/kilian/MPLABXProjects/L-chika PIC16F1827.X'
make[2]: Entering directory '/Users/kilian/MPLABXProjects/L-chika PIC16F1827.X'
"/Applications/microchip/xc8/v2.46/bin/xc8-cc"  -mcpu=16F1827 -Wl,-Map=dist/default/production/L-chika_PIC16F1827.X.production.map  -DXPRJ_default=default  -Wl,--defsym=__MPLAB_BUILD=1   -mdfp="/Applications/microchip/mplabx/v6.20/packs/Microchip/PIC12-16F1xxx_DFP/1.7.242/xc8"  -fno-short-double -fno-short-float -O0 -fasmfile -maddrqual=ignore -xassembler-with-cpp -mwarn=-3 -Wa,-a -msummary=-psect,-class,+mem,-hex,-file  -ginhx32 -Wl,--data-init -mno-keep-startup -mno-osccal -mno-resetbits -mno-save-resetbits -mno-download -mno-stackcall -mno-default-config-bits -std=c99 -gdwarf-3 -mstack=compiled:auto:auto      -Wl,--memorysummary,dist/default/production/memoryfile.xml -o dist/default/production/L-chika_PIC16F1827.X.production.elf  build/default/production/main.p1     

Memory Summary:
    Program space        used    20h (    32) of  1000h words   (  0.8%)
    Data space           used     3h (     3) of   180h bytes   (  0.8%)
    EEPROM space         used     0h (     0) of   100h bytes   (  0.0%)
    Configuration bits   used     2h (     2) of     2h words   (100.0%)
    ID Location space    used     0h (     0) of     4h bytes   (  0.0%)

make[2]: Leaving directory '/Users/kilian/MPLABXProjects/L-chika PIC16F1827.X'

BUILD SUCCESSFUL (total time: 689ms)
Loading code from /Users/kilian/MPLABXProjects/L-chika PIC16F1827.X/dist/default/production/L-chika_PIC16F1827.X.production.hex...
Program loaded with pack,PIC12-16F1xxx_DFP,1.7.242,Microchip
Loading completed