Diff: main.cpp

Revision:

0:c88a1756cfd3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Feb 23 06:07:56 2015 +0000
@@ -0,0 +1,52 @@
+/**
+ *  PCA9546A library "Hello world" sample
+ *
+ *  @author  Tedd OKANO
+ *  @version 0.1
+ *  @date    Feb-2015
+ *
+ *  PCA9546A: an I2C bus switch control library
+ *
+ *  The PCA9546A is a quad bidirectional translating switch controlled
+ *  via the I2C-bus. The SCL/SDA upstream pair fans out to four downstream
+ *  pairs, or channels. Any individual SCx/SDx channel or combination of
+ *  channels can be selected, determined by the contents of the programmable
+ *  control register.
+ *
+ *  For more information about PCA9546A:
+ *    http://www.nxp.com/documents/data_sheet/PCA9546A.pdf
+ *
+ */
+
+#include "mbed.h"
+#include "LM75B.h"
+#include "PCA9546A.h"
+
+PCA9546A    i2c_sw( p28, p27, 0xE0 );
+
+int main()
+{
+    //  all PCA9546A's downstream ports are OFF after power-up and hardware-reset
+    
+    i2c_sw.on( 0 );     //  turn-ON  the channel 0
+
+    LM75B   tmp0( p28, p27 );   //  making instance after a branch of I2C bus (which is connecting the LM75B) enabled
+
+    i2c_sw.off( 0 );    //  turn-OFF the channel 0
+    i2c_sw.on( 1 );     //  turn-ON  the channel 1
+
+    LM75B   tmp1( p28, p27 );   //  making instance after a branch of I2C bus (which is connecting the LM75B) enabled
+
+    while(1) {
+        
+        i2c_sw.off( 1 );    //  turn-OFF the channel 1
+        i2c_sw.on( 0 );     //  turn-ON  the channel 0
+        printf( "%.3f\r\n", tmp0.read() );
+
+        i2c_sw.off( 0 );    //  turn-OFF the channel 0
+        i2c_sw.on( 1 );     //  turn-ON  the channel 1
+        printf( "%.3f\r\n", tmp1.read() );
+
+        wait( 1.0 );
+    }
+}