Diff: AD5258.h

Revision:

2:8a71db02417b

Parent:

1:64570234d7b5

Child:

3:f5b60d166896

--- a/AD5258.h	Mon Nov 11 13:08:08 2013 +0000
+++ b/AD5258.h	Tue Nov 12 12:57:07 2013 +0000
@@ -3,7 +3,21 @@
 #ifndef MBED_AD5258_H
 #define MBED_AD5258_H
  
-// Interface to the AD5258 I2C 6-Bit digital Potentiometer
+// Interface to the AD5258 I2C 64-step (0x00 to 0x3F)6-Bit digital Potentiometer
+
+// measure reference voltage on the pin6 of U3 LM293
+// be sure to remove R11, and check R4 is 220
+
+/*Examples: RDAC =
+0x00, Vref=1,0V
+0x03, Vref=1,1V
+0x05, Vref=1,2V
+0x0F, Vref=1,5V
+0x20, Vref=1,82V  // default
+0x30, Vref=2,0V
+0x3F, Vref=2,2V 
+*/
+
 
 class AD5258 {
 public:
@@ -55,6 +69,17 @@
     *
     */
     void restore(void);
+    
+    
+    /** update write protect bit
+    *
+    * @param enable: TRUE to SET WP, FALSE to lift WP
+    */
+ 
+    void writeProtect(bool enable);
+ 
+    //  TODO: tolerance register access
+ 
  
  
 private: