Diff: max31865.h

Revision:

0:fae5dcebf741

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/max31865.h	Fri Sep 28 20:11:03 2018 +0000
@@ -0,0 +1,67 @@
+#ifndef MBED_MAX31865_H
+#define MBED_MAX31865_H
+
+#include "mbed.h"
+
+#define MAX31856_CONFIG_REG            0x00
+#define MAX31856_CONFIG_BIAS           0x80
+#define MAX31856_CONFIG_MODEAUTO       0x40
+#define MAX31856_CONFIG_MODEOFF        0x00
+#define MAX31856_CONFIG_1SHOT          0x20
+#define MAX31856_CONFIG_3WIRE          0x10
+#define MAX31856_CONFIG_24WIRE         0x00
+#define MAX31856_CONFIG_FAULTSTAT      0x02
+#define MAX31856_CONFIG_FILT50HZ       0x01
+#define MAX31856_CONFIG_FILT60HZ       0x00
+
+#define MAX31856_RTDMSB_REG           0x01
+#define MAX31856_RTDLSB_REG           0x02
+#define MAX31856_HFAULTMSB_REG        0x03
+#define MAX31856_HFAULTLSB_REG        0x04
+#define MAX31856_LFAULTMSB_REG        0x05
+#define MAX31856_LFAULTLSB_REG        0x06
+#define MAX31856_FAULTSTAT_REG        0x07
+
+
+#define MAX31865_FAULT_HIGHTHRESH     0x80
+#define MAX31865_FAULT_LOWTHRESH      0x40
+#define MAX31865_FAULT_REFINLOW       0x20
+#define MAX31865_FAULT_REFINHIGH      0x10
+#define MAX31865_FAULT_RTDINLOW       0x08
+#define MAX31865_FAULT_OVUV           0x04
+
+typedef enum max31865_numwires { 
+  MAX31865_2WIRE = 0,
+  MAX31865_3WIRE = 1,
+  MAX31865_4WIRE = 0
+} max31865_numwires_t;
+
+class max31865 {
+    public:
+    
+    max31865(PinName MOSI, PinName MISO, PinName SCLK, PinName CS);
+    
+    void Begin(max31865_numwires_t x = MAX31865_2WIRE);
+    int ReadFault();
+    void ClearFault();
+    int ReadRTD();
+    
+    void SetWires(max31865_numwires_t wires);
+    void AutoConvert(bool b);
+    void EnableBias(bool b);
+    
+    private:
+    SPI spi;
+    DigitalOut cs;
+    
+    void ReadRegistorN(int address, int buffer[], int n);
+    
+    int ReadRegistor8(int address);
+    int ReadRegistor16(int address);
+    
+    void WriteRegistor(int address, int reg);
+    int spiXfer(int address);
+};
+
+
+#endif
\ No newline at end of file