Revision 0:91b4ea0c12f8, committed 2017-04-19

Comitter:

wacomg

Date:

Wed Apr 19 09:58:17 2017 +0000

Commit message:

AD7680 library

Changed in this revision

diff -r 000000000000 -r 91b4ea0c12f8 ad7680.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ad7680.cpp	Wed Apr 19 09:58:17 2017 +0000
@@ -0,0 +1,49 @@
+/***************************************************************************
+ * @author Wacomg
+ *
+ * @section LICENSE
+ *
+ * Copyright (c) 2017 Wacomg
+ *
+ * @section DESCRIPTION
+ *
+ *  AD7680.CPP
+ *  Source file for AD7680 class library
+ *  The AD7680 is a 16-bits, 1-channel, SPI-interfaced ADC from Analog Devices
+ *  
+*****************************************************************************/
+
+#include "ad7680.h"
+
+
+// Constructor
+AD7680::AD7680(PinName MISO, PinName SCLK, PinName CS, int frequency) : _spi(NC, MISO, SCLK), _cs(CS) {    
+    _spi.frequency(frequency);
+    _spi.format(24, 0);
+    _cs = 1;
+    _q = (double) 5.0/65535.0;;
+};
+
+
+    
+void AD7680::readRAW(int16_t *rawDataBuffer) {
+    uint8_t lowByte, medByte, highByte;
+    _cs = 0; 
+        highByte = _spi.write(0x00);    
+        medByte = _spi.write(0x00);    
+        lowByte = _spi.write(0x00);
+
+        *(rawDataBuffer + 0) = (int16_t) ((highByte << 12) + (medByte<<4) + (lowByte>>4));    
+    _cs = 1;
+}
+
+void AD7680::readAnalog(double *analogDataBuffer) {
+    uint8_t lowByte, medByte, highByte;
+    _cs = 0; 
+        highByte = _spi.write(0x00);    
+        medByte = _spi.write(0x00);    
+        lowByte = _spi.write(0x00);
+
+        *(analogDataBuffer +0 ) = (double) (uint16_t)((highByte << 12) + (medByte<<4) + (lowByte>>4))*_q;    
+    _cs = 1;
+}

diff -r 000000000000 -r 91b4ea0c12f8 ad7680.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ad7680.h	Wed Apr 19 09:58:17 2017 +0000
@@ -0,0 +1,32 @@
+/***************************************************************************
+ * @author Wacomg
+ *
+ * @section LICENSE
+ *
+ * Copyright (c) 2017 Wacomg
+ *
+ * @section DESCRIPTION
+ *
+ *  AD7680.H
+ *  Header file for AD7680 class library
+ *  The AD7680 is a 16-bits, 1-channels, SPI-interfaced ADC from Analog Devices
+ *  
+*****************************************************************************/
+#ifndef AD7680_H
+#define AD7680_H
+
+#include "mbed.h"
+
+class AD7680 {
+    private:
+        SPI _spi;
+        DigitalOut _cs;
+        double _q;
+
+    public:
+        AD7680(PinName MISO, PinName SCLK, PinName CS, int frequency); // Constructor
+        void readRAW(int16_t *); // Read raw values from ADC
+        void readAnalog(double *); // Read analog values
+};
+
+#endif
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