Revision 9:2fcf9622c207, committed 2017-03-22

Comitter:

franzle

Date:

Wed Mar 22 09:34:59 2017 +0000

Parent:

8:c716fb3ccb8d

Commit message:

New Library for I2C switch

Changed in this revision

--- a/PCA9547.cpp	Fri Apr 17 03:34:23 2015 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,52 +0,0 @@
-/**
- *  PCA9547 library
- *
- *  @author  Tedd OKANO
- *  @version 0.2
- *  @date    Feb-2015
- *
- *  PCA9547: an I2C bus multiplexer control library
- *
- *  PCA9547 is an I2C multiplexer which enables to select 1:8 multiplexed I2C bus.
- *  The multiplexer is useful for deviding I2C bus to avoiding slave address conflict and separating capacitive loads.
- *
- *  For more information about PCA9547:
- *    http://www.nxp.com/documents/data_sheet/PCA9547.pdf
- *
- */
-
-#include "PCA9547.h"
-
-PCA9547::PCA9547( PinName sda, PinName scl, char i2c_address )
-    : i2c_p( new I2C( sda, scl ) ), i2c( *i2c_p ), i2c_addr( i2c_address )
-{
-    //  do nothing.
-    //  leave it in default state.
-}
-
-PCA9547::PCA9547( I2C &i2c_, char i2c_address )
-    : i2c_p( NULL ), i2c( i2c_ ), i2c_addr( i2c_address )
-{
-    //  do nothing.
-    //  leave it in default state.
-}
-
-PCA9547::~PCA9547()
-{
-    if ( NULL != i2c_p )
-        delete  i2c_p;
-}
-
-void PCA9547::select( char channel )
-{
-    char    data    = 0x08 | channel;
-
-    i2c.write( i2c_addr, &data, 1 );
-}
-
-void PCA9547::disable( void )
-{
-    char    data    = 0x00;
-
-    i2c.write( i2c_addr, &data, 1 );
-}

--- a/PCA9547.h	Fri Apr 17 03:34:23 2015 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,98 +0,0 @@
-/**
- *  PCA9547 library
- *
- *  @author  Tedd OKANO
- *  @version 0.2
- *  @date    Feb-2015
- *
- *  PCA9547: an I2C bus multiplexer control library
- *
- *  PCA9547 is an I2C multiplexer which enables to select 1:8 multiplexed I2C bus.
- *  The multiplexer is useful for deviding I2C bus to avoiding slave address conflict and separating capacitive loads.
- *
- *  For more information about PCA9547:
- *    http://www.nxp.com/documents/data_sheet/PCA9547.pdf
- *
- */
-
-#ifndef MBED_PCA9547_H
-#define MBED_PCA9547_H
-
-#include "mbed.h"
-
-/** PCA9547 class
- *
- *  PCA9547: an I2C bus multiplexer control library
- *
- *  PCA9547 is an I2C multiplexer which enables to select 1:8 multiplexed I2C bus.
- *  The multiplexer is useful for deviding I2C bus to avoiding slave address conflict and separating capacitive loads.
- *
- *  For more informatioj about PCA9547:
- *    http://www.nxp.com/documents/data_sheet/PCA9547.pdf
- *
- *  Example:
- *  @code
- *  #include "mbed.h"
- *  #include "LM75B.h"
- *  #include "PCA9547.h"
- *
- *  PCA9547 mux( p28, p27, 0xE0 );
- *
- *  int main()
- *  {
- *      mux.select( 0 );
- *
- *      LM75B   tmp0( p28, p27 );   //  making instance after a branch of I2C bus (which is connecting the LM75B) enabled
- *
- *      while(1) {
- *          printf( "%.3f\r\n", tmp0.read() );
- *          wait( 1.0 );
- *      }
- *  }
- *  @endcode
- */
-
-class PCA9547
-{
-public:
-
-    /** Create a PCA9547 instance connected to specified I2C pins with specified address
-     *
-     * @param sda I2C-bus SDA pin
-     * @param scl I2C-bus SCL pin
-     * @param i2c_address I2C-bus address (default: 0xE0)
-     */
-    PCA9547( PinName sda, PinName scl, char i2c_address = 0xE0 );
-
-    /** Create a PCA9546A instance connected to specified I2C pins with specified address
-     *
-     * @param &i2c_ I2C object (instance)
-     * @param i2c_address I2C-bus address (default: 0xE0)
-     */
-    PCA9547( I2C &i2c_, char i2c_address = 0xE0 );
-
-    /** Destructor of PCA9547
-     */
-    ~PCA9547();
-
-    /** Channel select
-     *
-     *  Enable and select a channel
-     *
-     * @param channel channel number
-     */
-    void select( char channel );
-
-    /** Disabling all channels
-     *
-     *  Disable all channels
-     */
-    void disable( void );
-
-private:
-    I2C     *i2c_p;
-    I2C     &i2c;
-    char    i2c_addr;
-};
-
-#endif  //  MBED_PCA9547_H
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PCA9548A.cpp	Wed Mar 22 09:34:59 2017 +0000
@@ -0,0 +1,52 @@
+/**
+ *  PCA9548A library
+ *
+ *  @author  Tedd OKANO
+ *  @version 0.2
+ *  @date    Feb-2015
+ *
+ *  PCA9548A: an I2C bus multiplexer control library
+ *
+ *  PCA9548A is an I2C multiplexer which enables to select 1:8 multiplexed I2C bus.
+ *  The multiplexer is useful for deviding I2C bus to avoiding slave address conflict and separating capacitive loads.
+ *
+ *  For more information about PCA9548A:
+ *    http://www.nxp.com/documents/data_sheet/PCA9548A.pdf
+ *
+ */
+
+#include "PCA9548A.h"
+
+PCA9548A::PCA9548A( PinName sda, PinName scl, char i2c_address )
+    : i2c_p( new I2C( sda, scl ) ), i2c( *i2c_p ), i2c_addr( i2c_address )
+{
+    //  do nothing.
+    //  leave it in default state.
+}
+
+PCA9548A::PCA9548A( I2C &i2c_, char i2c_address )
+    : i2c_p( NULL ), i2c( i2c_ ), i2c_addr( i2c_address )
+{
+    //  do nothing.
+    //  leave it in default state.
+}
+
+PCA9548A::~PCA9548A()
+{
+    if ( NULL != i2c_p )
+        delete  i2c_p;
+}
+
+void PCA9548A::select( char channel )
+{
+    char    data    = 0x08 | channel;
+
+    i2c.write( i2c_addr, &data, 1 );
+}
+
+void PCA9548A::disable( void )
+{
+    char    data    = 0x00;
+
+    i2c.write( i2c_addr, &data, 1 );
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PCA9548A.h	Wed Mar 22 09:34:59 2017 +0000
@@ -0,0 +1,98 @@
+/**
+ *  PCA9548A library
+ *
+ *  @author  Tedd OKANO
+ *  @version 0.2
+ *  @date    Feb-2015
+ *
+ *  PCA9548A: an I2C bus multiplexer control library
+ *
+ *  PCA9548A is an I2C multiplexer which enables to select 1:8 multiplexed I2C bus.
+ *  The multiplexer is useful for deviding I2C bus to avoiding slave address conflict and separating capacitive loads.
+ *
+ *  For more information about PCA9548A:
+ *    http://www.nxp.com/documents/data_sheet/PCA9548A.pdf
+ *
+ */
+
+#ifndef MBED_PCA9547_H
+#define MBED_PCA9547_H
+
+#include "mbed.h"
+
+/** PCA9548A class
+ *
+ *  PCA9548A: an I2C bus multiplexer control library
+ *
+ *  PCA9548A is an I2C multiplexer which enables to select 1:8 multiplexed I2C bus.
+ *  The multiplexer is useful for deviding I2C bus to avoiding slave address conflict and separating capacitive loads.
+ *
+ *  For more informatioj about PCA9548A:
+ *    http://www.nxp.com/documents/data_sheet/PCA9548A.pdf
+ *
+ *  Example:
+ *  @code
+ *  #include "mbed.h"
+ *  #include "LM75B.h"
+ *  #include "PCA9548A.h"
+ *
+ *  PCA9548A mux( p28, p27, 0xE0 );
+ *
+ *  int main()
+ *  {
+ *      mux.select( 0 );
+ *
+ *      LM75B   tmp0( p28, p27 );   //  making instance after a branch of I2C bus (which is connecting the LM75B) enabled
+ *
+ *      while(1) {
+ *          printf( "%.3f\r\n", tmp0.read() );
+ *          wait( 1.0 );
+ *      }
+ *  }
+ *  @endcode
+ */
+
+class PCA9548A
+{
+public:
+
+    /** Create a PCA9548A instance connected to specified I2C pins with specified address
+     *
+     * @param sda I2C-bus SDA pin
+     * @param scl I2C-bus SCL pin
+     * @param i2c_address I2C-bus address (default: 0xE0)
+     */
+    PCA9548A( PinName sda, PinName scl, char i2c_address = 0xE0 );
+
+    /** Create a PCA9546A instance connected to specified I2C pins with specified address
+     *
+     * @param &i2c_ I2C object (instance)
+     * @param i2c_address I2C-bus address (default: 0xE0)
+     */
+    PCA9548A( I2C &i2c_, char i2c_address = 0xE0 );
+
+    /** Destructor of PCA9548A
+     */
+    ~PCA9548A();
+
+    /** Channel select
+     *
+     *  Enable and select a channel
+     *
+     * @param channel channel number
+     */
+    void select( char channel );
+
+    /** Disabling all channels
+     *
+     *  Disable all channels
+     */
+    void disable( void );
+
+private:
+    I2C     *i2c_p;
+    I2C     &i2c;
+    char    i2c_addr;
+};
+
+#endif  //  MBED_PCA9547_H
\ No newline at end of file