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 ~
 *PIC-PICの通信(USART) [#i498b963]
 
 PICマイコン同士の通信にチャレンジ。調べた結果 
 USART機能 
 (Universal Synchronous Asynchronous Receiver Transmitter) 
 http://picfun.com/serial23.html 
 を用いるのが手軽で確実と結論。 06/11/02
 
 USART機能とは、シリアル通信(RS232C通信)と同じ通信方法の事です。
 
 【16F628Aの場合】
 事例回路は、スイッチを押している間、通信先のＰＩＣのＬＥＤが点灯し、
 スイッチを離すとＬＥＤが消灯します。
 |&attachref(115810351_159.jpg,zoom,150x150,button){新しい写真添付};|&attachref(USART01_30.jpg,zoom,150x150,button){新しい写真添付};|
 
  /** 
  * USART送信 
  * 
  * PIC 16F628A 
  * 発信器:内臓4MHz 
  * 電源:乾電池3本(4.5V) 
  * switch: RA0 
  *　 
  * Device Flags: _BODEN_OFF _BOREN_OFF _CP_OFF _PWRTE_ON _WDT_OFF 
  * 　　　　　　　_LVP_OFF _MCLRE_OFF _INTRC_OSC_NOCLKOUT 
  * 
  * 言語 MikroC v2.1 
  */
  void main() { 
  
  　　PORTA = 0b00000000; //PORTAの中身をきれいにする 
  　　PORTB = 0b00000000; //PORTBの中身をきれいにする 
  
  　　CMCON = 0b00000111;　//PORTAをデジタル入出力使用に設定 
  
  　　TRISA = 0b00000001; //RA0を1:入力に、他を0:出力に設定 
  　　TRISB = 0b00000010; //PORTB RB1:入力、他７ヶは出力設定 
  
  　　Usart_Init(2400); //通信速度を2400 band rateに設定 
  
  　　do { 
  　　　　if(PORTA.F0 == 1) { 
  　　　　　　Usart_Write('A'); //RA0=1なら'A'を送信 
  　　　　} else { 
  　　　　　　Usart_Write(0); //RA0=0なら 0 を送信 
  　　　　} 
  
  　　} while(1); 
  } 
 
 
  /** 
  * USART受信 
  * 
  * PIC 16F628A 
  * 発信器:内臓4MHz 
  * 電源:乾電池4本(6.0V) 
  * LED: RB3 
  *　 
  * Device Flags: _BODEN_OFF _BOREN_OFF _CP_OFF _PWRTE_ON _WDT_OFF 
  * 　　　　　　　_LVP_OFF _MCLRE_OFF _INTRC_OSC_NOCLKOUT 
  * 
  * 言語 MikroC v2.1 
  */ 
  unsigned short int data; 
  
  void main() { 
  
  　　PORTB = 0b00000000; //PORTBの中身をきれいにする 
  
  　　TRISB = 0b00000010; //PORTB RB1:入力、他７ヶは出力設定 
  
  　　Usart_Init(2400); //通信速度を2400 band rateに設定 
  
  　　do { 
  　　　　if(Usart_Data_Ready()) { 
  　　　　　　data = Usart_Read(); 
  　　　　　　if(data == 'A') { 
  　　　　　　　　PORTB.F3 = 1; //dataが'A'ならRB3=1(LED ON) 
  　　　　　　} else { 
  　　　　　　　　PORTB.F3 = 0; //それ以外はRB3=0(LED OFF) 
  　　　　　　} 
  　　　　} 
  　　} while(1); 
  }
 
 ★この情報は役に立ちましたか？
 #vote(はい[70],普通[12],いいえ[27])
 - こんばんわ、いつも分からない時は参考にさせて頂いております。 -- [[質問者]] &new{2013-11-30 (土) 19:18:56};
 - 今回mplabでＰＩＣ16Ｆ1822同士のusart通信の文字列送受信をしたいのですが、上手くいきません。題材として扱って頂けないでしょうか？ -- [[質問者2]] &new{2013-11-30 (土) 19:21:54};
 - MikroC以外でお願いします --  &new{2015-01-30 (金) 17:50:59};
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