Diff: mcp482x.h

Revision:

1:277e5be610bc

diff -r b58572ce83b6 -r 277e5be610bc mcp482x.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mcp482x.h	Sun Dec 15 02:42:11 2013 +0000
@@ -0,0 +1,87 @@
+#include "mbed.h"
+#include "bit.h"
+#ifndef MCP482X_H
+#define MCP482X_H
+
+#define MCP482X_VREF 2048
+
+#define DACSELBIT       BIT(15)
+#define DACUNDEF        BIT(14)
+#define GAINBIT         BIT(13)
+#define SHDNBIT         BIT(12)
+
+#define SELECTDACA(VALUE)        CLEARBITS(VALUE,DACSELBIT)
+#define SELECTDACB(VALUE)        SETBITS(VALUE,DACSELBIT)
+#define SELECT1XGAIN(VALUE)      SETBITS(VALUE,GAINBIT)
+#define SELECT2XGAIN(VALUE)      CLEARBITS(VALUE,GAINBIT)
+#define SELECTPWRON(VALUE)       SETBITS(VALUE, SHDNBIT)
+#define SELECTPWROFF(VALUE)      CLEARBITS(VALUE, SHDNBIT)
+
+// BITS 0-11 set the output voltage!!!
+
+class MCP482X {
+public:
+
+/*
+* Constructor
+*/
+MCP482X(SPI &spi, void(*sel)(void), void(*usel)(void));
+
+/*
+* Destructor
+*/
+~MCP482X();
+
+/*
+* Write to DAC A
+*/
+int writeA(int value);
+
+
+/*
+* Write to DAC B
+*/
+int writeB(int value);
+
+
+/*
+* Set Gain for DAC A 1 or 2
+*/
+void setGainA(int value);
+
+
+/*
+* Set Gain for DAC B 1 or 2
+*/
+void setGainB(int value);
+
+/*
+* Shutdown DAC
+*/
+void disable();
+
+/*
+* Power On DAC
+*/
+void enable();
+
+void select();
+
+void deselect();
+
+private:
+
+void(*selectfxn)(void);
+void(*unselectfxn)(void);
+int gainA;
+int gainB;
+int valA;
+int valB;    
+bool bshutdown;
+SPI &_spi;
+
+void configspi();
+void sendValue(int value);
+}; // end class MCP482X
+
+#endif //MCP482X_H
\ No newline at end of file