Diff: ad7680.cpp

Revision:

0:91b4ea0c12f8

--- /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;
+}