refined dac example

developpment/interfacer.cpp

@@ -136,16 +136,19 @@ void mcp4725_test()
 	
 	MCP4725 dac(&i2c);
 		  
-	dac = 0xFFFF;
+	dac = 0x0000;
 	
-	for(i = 5 ; i > 0; i--)
+	for(i = 20 ; i > 0; i--)
 	{
-		std::cout << "off" << std::endl;
-		dac = 0x0000;
-		usleep(2000000);
+		
+		std::cout << static_cast<unsigned int>(i) << std::endl;
 		std::cout << "on" << std::endl;
 		dac = 0xFFFF;
+		usleep(2000000);	
+		std::cout << "off" << std::endl;
+		dac = 0x0000;
 		usleep(2000000);
+
 	}
 	/*
 	MCP4725 dac(//MCP4725::pwrd_md::normal,