Tedd OKANO / PCA9547

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

Dependents:   pca9547_Hello m3Dpi

/media/uploads/okano/pca9547_connections.png

Information

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The PCA9547 is an octal bidirectional translating multiplexer controlled by the I2C-bus. The SCL/SDA upstream pair fans out to eight downstream pairs, or channels.

pca9547

Diff: PCA9547.h

Revision:
0:662ab6a5aa97
Child:
1:47f2cf4c6619
diff -r 000000000000 -r 662ab6a5aa97 PCA9547.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PCA9547.h	Tue Jul 01 00:10:04 2014 +0000
@@ -0,0 +1,20 @@
+#ifndef MBED_PCA9547_H
+#define MBED_PCA9547_H
+
+#include "mbed.h"
+
+class PCA9547
+{
+public:
+    PCA9547( PinName sda, PinName scl, char i2c_address = 0xE0 );
+
+    ~PCA9547();
+
+    void select( char channel );
+
+private:
+    I2C     i2c;
+    char    _i2c_addr;
+};
+
+#endif  //  MBED_PCA9547_H
\ No newline at end of file