Revision 0:2cb766caa4c7, committed 2017-11-01

Comitter:

DrewSchaef

Date:

Wed Nov 01 15:56:02 2017 +0000

Commit message:

Committed to allow program to be published

Changed in this revision

diff -r 000000000000 -r 2cb766caa4c7 MCP3008.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MCP3008.cpp	Wed Nov 01 15:56:02 2017 +0000
@@ -0,0 +1,30 @@
+/**by Austin Saunders
+
+*/
+
+#include <mbed.h>
+#include "MCP3008.h"
+
+MCP3008::MCP3008(PinName mosi, PinName miso, PinName clk, PinName cs)
+:   _spi(mosi,miso,clk),
+    _cs(cs),
+    _vref(3.3)
+{
+    _spi.frequency(1000000);
+    _spi.format(8,0);
+    _cs = 1;
+}
+ 
+int
+MCP3008::read(int ch)
+{
+    _cs = 0;
+    _spi.write(0x01);                   
+    _data1 = _spi.write(0x80|(ch<<4));
+    _data2 = _spi.write(0x00);
+    int adb = (_data1<<8) | _data2; 
+    adb = (adb & 0x03FF);
+    _cs = 1;
+    float ain = (adb*_vref)/1023;
+    return adb;
+}
\ No newline at end of file

diff -r 000000000000 -r 2cb766caa4c7 MCP3008.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MCP3008.h	Wed Nov 01 15:56:02 2017 +0000
@@ -0,0 +1,23 @@
+//
+//
+//
+#ifndef _MCP3008_H
+#define _MCP3008_H
+ 
+#include <mbed.h>
+ 
+class MCP3008 {
+  protected:
+    SPI _spi;
+    DigitalOut _cs;
+    float _vref;
+    int _data1;
+    int _data2;
+  
+  public:
+    MCP3008(PinName mosi=p11, PinName miso=p12, PinName clk=p13, PinName cs=p14);
+    int read(int ch);
+    float vref(float v){return _vref=v;}
+};
+ 
+#endif  //_MCP3008_H
\ No newline at end of file