受信側のソフトウエアも修正しました: ぱぱーんの日記

2016年07月02日

受信側のソフトウエアも修正しました

int型の変数の値を読みたいということと、２バイトのレジスターの値を読みたいということで受信側のソフトウエアも修正しました。

slave_receiver2


 // Wire Slave Receiver 

 // by Nicholas Zambetti < 
   http://www.zambetti.com 
 
 
 > 


 // Demonstrates use of the Wire library 

 // Receives data as an I2C/TWI slave device 

 // Refer to the "Wire Master Writer" example for use with this 


 // Created 29 March 2006 


 // This example code is in the public domain. 



 #include 
 < 
 Wire 
 . 
 h 
 > 


 void 
 setup 
 ( 
 ) 
 { 

 Wire 
 . 
 begin 
 ( 
 8 
 ) 
 ; 
 // join i2c bus with address #8 

 Wire 
 . 
 onReceive 
 ( 
 receiveEvent 
 ) 
 ; 
 // register event 

  Serial 
 
 . 
 begin 
 ( 
 230400 
 ) 
 ; 
 // start serial for output 

 } 


 void 
 loop 
 ( 
 ) 
 { 

 delay 
 ( 
 100 
 ) 
 ; 

 } 


 // function that executes whenever data is received from master 

 // this function is registered as an event, see setup() 

 char 
 c 
 ; 

 int 
 x 
 , 
 y 
 ; 


 void 
 receiveEvent 
 ( 
 int 
 howMany 
 ) 
 { 

 while 
 ( 
 2 
 < 
 Wire 
 . 
 available 
 ( 
 ) 
 ) 
 { 
 // loop through all but the last 

 c 
 = 
 Wire 
 . 
 read 
 ( 
 ) 
 ; 
 // receive byte as a character 

 if 
 ( 
 c 
 == 
 '*' 
 ) 
 { 

 break 
 ; 

 } 

  Serial 
 
 . 
 print 
 ( 
 c 
 ) 
 ; 
 // print the character 

 } 

  Serial 
 
 . 
 print 
 ( 
 " is " 
 ) 
 ; 


 if 
 ( 
 c 
 == 
 '*' 
 ) 
 { 

 //debugRegPrint 

 x 
 = 
 Wire 
 . 
 read 
 ( 
 ) 
 ; 

 y 
 = 
 Wire 
 . 
 read 
 ( 
 ) 
 ; 
 // receive byte as an integer 

 x 
 = 
 256 
 * 
 y 
 + 
 x 
 ; 

  Serial 
 
 . 
 print 
 ( 
 "0x" 
 ) 
 ; 

  Serial 
 
 . 
 println 
 ( 
 x 
 , 
 HEX 
 ) 
 ; 
 // print the integer 


 } 
 else 
 { 

 //debugPrint 

 x 
 = 
 Wire 
 . 
 read 
 ( 
 ) 
 ; 

 y 
 = 
 Wire 
 . 
 read 
 ( 
 ) 
 ; 
 // receive byte as an integer 

 x 
 = 
 256 
 * 
 y 
 + 
 x 
 ; 

  Serial 
 
 . 
 println 
 ( 
 x 
 ) 
 ; 
 // print the integer 

 } 

 }