参考: 定番!ARMキット&PIC用Cプログラムでいきなりマイコン制御[DVD-ROM付き] (マイコン活用シリーズ), pp.143-148
main.c
#include "mcc_generated_files/mcc.h" volatile int msCnt = 0; void delay_ms(int cnt) { msCnt = cnt; while(msCnt); } void SetBeep(int val) { TMR2_LoadPeriodRegister(val); PWM1_LoadDutyValue(val << 1); } void main(void) { int Note[] = { 0x011C, // 0, A3 0x010C, // 1, B3♭ 0x00FD, // 2, B3 0x00EE, // 3, C4 0x00E1, // 4, D4♭ 0x00D4, // 5, D4 0x00C8, // 6, E4♭ 0x00BD, // 7, E4 0x00B2, // 8, F4 0x00A8, // 9, G4♭ 0x009F, //10, G4 0x0096, //11, A4♭ 0x008E, //12, A4 0x0086, //13, B4♭ 0x007E, //14, B4 0x0077, //15, C5 0x0070, //16, D5♭ 0x006A, //17, D5 0x0064, //18, E5♭ 0x005E, //19, E5 0x0059, //20, F5 0x0054, //21, G5♭ 0x004F, //22, G5 0x004B, //23, A5♭ 0x0047, //24, A5 0x0043, //25, B5♭ 0x003F, //26, B5 0x003B, //27, C6 }; int Scale[] = { 3, 7, 10, 15, 17, 15, 10, 7, //C 5, 12, 17, 19, 21, 19, 17, 12, //D 10, 17, 22, 24, 26, 24, 22, 17, //G 7, 17, 21, 22, 26, 22, 21, 17, //Em }; int numOfNotes = (sizeof Scale)/(sizeof(int)); int noteNo = 0; SYSTEM_Initialize(); INTERRUPT_GlobalInterruptEnable(); INTERRUPT_PeripheralInterruptEnable(); while(1) { SetBeep(Note[Scale[noteNo]]); delay_ms(100); noteNo++; if(noteNo > (numOfNotes - 1)) { noteNo = 0; } } }
