Diff: DAC_SPI/DAC_SPI.h

Revision:

1:90b59ae53d25

Parent:

0:b74d88185698

--- a/DAC_SPI/DAC_SPI.h	Tue Jul 03 03:22:59 2012 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,33 +0,0 @@
-#ifndef DAC_SPI_H
-#define DAC_SPI_H
-#include "mbed.h"
-
-/* a basic parent library for use with DACs controlled via SPI.  Individual hardware implementations will need their own libraries.
-This provides basic initialization of common pins and provides a serial channel.   Doesn't provide a lot of added functionality, but serves as an interface for the SPI library.
-*/
-class DAC_SPI
-{
-    public:
-    DAC_SPI(int SPIchannelNum, PinName CS,  PinName LDAC);
-    virtual void select(char DACvalue); //choose the active DAC
-    virtual void write(int DACvalue) =0; //write a value to the Digital Analog Converter    
-    virtual void write_mV(int millivolts) =0; //write a value to the Digital Analog Converter specified in mV (may require appropriate scaling factor)
-    
-    /** Manually change the SPI frequency 
-    * @param freq Desired frequency in hertz: must be a value supported by both the mbed and DAC.  The MCP4922 supports frequencies to 20MHz.
-    */
-    void frequency(int freq);
-    //set the number of bits for DAC
-    void messageBits(int bits);
-    //DigitalOut SCK;
-    /** The currently selected DAC channel.  0 for DAC A, 1 for DAC B, etc*/
-    char DACselect;
-    DigitalOut CS;  //serial chip select pin
-    DigitalOut LDAC; //synchronize pin to update both DACs together    
-    SPI * DACspi;  //SPI channel.  0 for p5-p7, 1 for p11-p13
-};
-
-extern SPI SPI_A;  //channel A SPI (pins 5,7)
-extern SPI SPI_B;  //channel B SPI (pins 11,13)
-
-#endif //DAC_H
\ No newline at end of file