Update i2c_scanner.ino

Author: Testato

libraries/Wire/examples/i2c_scanner/i2c_scanner.ino

@@ -26,15 +26,22 @@
 
 
 
-// Pinmap for Bluepill I2Cs (by Testato)
+// Example pinmap for Bluepill I2Cs (by Testato)
 //
 // I2C-1 standard pins: PB7(sda) PB6(scl)
 // Use it by "Wire" without pin declaration
 //
 // I2C-1 alternative pins: PB9(sda) PB8(scl)
-// TwoWire Wire_alt(PB9,PB8);
+// Remap the first I2C befoure call begin
+// Wire.setSDA(PB9);
+// Wire.setSCL(PB8);
+// Wire.begin();
 //
-// I2C-2: PB9(sda) PB8(scl)
+// I2C-2: PB11(sda) PB10(scl)
+// Wire.setSDA(PB11);
+// Wire.setSCL(PB10);
+//
+// If you want to use the two I2Cs simultaneously, create a new instance for the second I2C
 // TwoWire Wire2(PB11,PB10);