#freeze
閲覧総計：&counter();　　（本日：&counter(today);　　昨日：&counter(yesterday);）~
~
*PWM分解能をLCDに表示(24FJ64) [#sa0e18d3]

24FJ64GA002でのLCD表示の応用として、PWMの設定周期と、その時のPWM分解能を
LCDに表示するプログラムを作成した。　08/03/17

PWMの所望の周期を決定すると、それに伴いPWMの分解能が決定する。
MikroC dsPICでは、Pwm_Init()関数に所望のPWM周期を設定すると、戻り値でPWM分解能
(period)を戻してくれる機能が追加された。
設定したPWMの周期(Hz)と、その時のPWM分解能をLCDに表示するプログラムを作成した。
PICクロック: 内蔵8MHz

|&attachref(P1010613.JPG,zoom,150x150,button){新しい写真添付};|&attachref(P1010612.JPG,zoom,150x150,button){新しい写真添付};|&attachref(P1010614.JPG,zoom,150x150,button){新しい写真添付};|

 /**
 * 24F64の稼働テスト LCDの稼働確認
 *
 * PIC24FJ64GA002　450円
 * http://akizukidenshi.com/catalog/items2.php?q=%22I-02000%22&s=score&p=1&r=1&page=
 * LCD: SC1602BS-B(-SO-GS-K) 550円
 * http://akizukidenshi.com/catalog/items2.php?p=1&q="P-00040"
 * LED: RB5
 *
 *Clock: 8.0MHz 内蔵発振器使用
 *電源：乾電池2本(3V)
 *Device Flags:
 *_IESO_OFF　_FNOSC_FRC　_FCKSM_CSDCMD　_OSCIOFNC_OFF　_POSCMOD_NONE
 *_JTAGEN_OFF　_GCP_OFF　_GWRP_OFF　_BKBUG_OFF　_COE_OFF　_ICS_PGx1　_FWDTEN_OFF
 *
 *_IESO_OFF 2速度スタートアップ無効
 *_FNOSC_FRC クロックは内蔵オシレータを利用(8MHz)
 *_FCKSM_CSDCMD 動作中のクロック切り替え&監視OFF
 *_OSCIOFNC_OFF RA3はI/Oとして利用　_POSCMOD_NONE 主発信機無効
 *_JTAGEN_OFF  JTAG無効    _GCP_OFF  コードプロテクト無効
 *_GWRP_OFF  プログラムメモリ書込み禁止　_BKBUG_OFF デバッグモードにリセット
 *_COE_OFF  Clip-onエミュレーション無効
 *_ICS_PGx1  ICSP書き込みにPGC1/PGD1を使う　FWDTEN_OFF  ウォチドック無効
 *
 * MikroC dsPIC v4.0.0.0
 * コンパイルサイズ: 2,468Byte (6,000Byte以下なら無料利用)
 */
 void main()
 {
     unsigned int cycle1 = 30000; //PWM周期 200Hz〜30KHz
     unsigned int pwm_period1; //PWM分解能
     char s_cycle1[7];
     char s_pwm_period1[7];
 
     PORTB  = 0b0000000000000000; //PortBの中身ををきれいにする
     TRISB  = 0b0000000000000000; //PortB 16個全て0:出力に設定
     ADPCFG = 0b1111111111111111; //全ピンをデジタルで使用
     //RP6ピンにOC1機能(PWM出力)18(=0b10010)を割付
     RPOUTR3bits.RP6R4 = 1;
     RPOUTR3bits.RP6R3 = 0;
     RPOUTR3bits.RP6R2 = 0;
     RPOUTR3bits.RP6R1 = 1;
     RPOUTR3bits.RP6R0 = 0;
 
     //PWMのチャージポンプでLCDに5V電源を供給
     //参考ページ：http://www8.plala.or.jp/InHisTime/page021.html#LABO-020
     pwm_period1 = Pwm_Init(cycle1, 1, 1, 2); //PWM周期を設定
     Pwm_Set_Duty(pwm_period1 / 2, 1); //PWM Duty50%に設定
     Pwm_Start(1); //PWMスタート
     Delay_ms(100); //チャージポンプ充電に100ミリ秒(=0.1秒)待つ
 
     //Lcd_Custom_Config(*data_port, db3, db2, db1, db0, *ctrl_port, rs, rw, en)
     Lcd_Custom_Config(&PORTB, 15, 14, 13, 12, &PORTB, 11, 10, 9);
     Lcd_Custom_Cmd(LCD_CURSOR_OFF);
     
     IntToStr(cycle1, s_cycle1); //数値を文字列に変換
     IntToStr(pwm_period1 + 1, s_pwm_period1); //数値を文字列に変換
     
     Lcd_Custom_Out(1, 1, "PWMｼｭｳｷ");
     Lcd_Custom_Out(1, 8, s_cycle1);
     Lcd_Custom_Out(1, 15, "Hz");
     
     Lcd_Custom_Out(2, 1, "PWMﾌﾞﾝｶｲﾉｳ");
     Lcd_Custom_Out(2, 11, s_pwm_period1);
     
     LATBbits.LATB5 = 1; //稼働確認用LED ON
 
     while (1)
     {
     }
 }

~
★この情報は役に立ちましたか？
#vote(はい[8],普通[5],いいえ[5])
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