Revision 0:8920c7d857d8, committed 2013-11-11

Comitter:

RodColeman

Date:

Mon Nov 11 11:00:35 2013 +0000

Child:

1:64570234d7b5

Commit message:

Initial untested version

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AD5258.cpp	Mon Nov 11 11:00:35 2013 +0000
@@ -0,0 +1,21 @@
+#include "AD5258.h"
+#include "mbed.h"
+ 
+AD5258::AD5258(PinName sda, PinName scl, int address)
+        : _i2c(sda, scl) {
+    _address = address;
+}
+ 
+int AD5258::read() {
+    char foo[1];
+    _i2c.read(_address, foo, 1);
+    return foo[0];
+}
+ 
+void AD5258::write(int data) {
+    char foo[2];
+    foo[0] = 00;
+    foo[1] = data;
+    _i2c.write(_address, foo, 2);
+}
+ 
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AD5258.h	Mon Nov 11 11:00:35 2013 +0000
@@ -0,0 +1,35 @@
+#include "mbed.h"
+ 
+#ifndef MBED_AD5258_H
+#define MBED_AD5258_H
+ 
+// Interface to the AD5258 I2C 6-Bit digital Potentiometer
+
+class AD5258 {
+public:
+    /** Create an instance of the AD5258 connected to specfied I2C pins, with the specified address.
+     *
+     * @param sda The I2C data pin
+     * @param scl The I2C clock pin
+     * @param address The I2C address for this AD5258
+     */
+    AD5258(PinName sda, PinName scl, int address);
+ 
+    /** Read the RDAC value
+     *
+     * @return The 6-bit value read
+     */
+    int read();
+    
+    /** Write to the IO pins
+     * 
+     * @param data The 6-bits value: 0x00 to 0x3F to write to the pots RDAC
+     */
+    void write(int data);
+ 
+private:
+    I2C _i2c;
+    int _address;
+};
+ 
+#endif
\ No newline at end of file