Diff: ADT7310.cpp

Revision:

0:6890e1214ea6

Child:

1:38a276440674

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ADT7310.cpp	Sat Jun 27 08:09:59 2015 +0000
@@ -0,0 +1,73 @@
+//--------------------------------------------------------------
+//  Class for using ADT7310 on one-shot mode
+//      Default: 13-bit resolution
+//  2015/06/27, Copyright (c) 2015 MIKAMI, Naoki
+//--------------------------------------------------------------
+
+#include "ADT7310.hpp"
+
+namespace Mikami
+{
+    // Constructor
+    ADT7310::ADT7310(PinName ss,
+                     PinName mosi, PinName miso, PinName sck)
+        : ss_(ss, 1), spi_(mosi, miso, sck)
+    {
+        Reset();
+        spi_.format(8, 3);  // mode: 8 bits, POL = 1, PHA = 1
+        SetConfigReg(0x00); // Set 13-bit resolution
+    }
+
+    // Software reset
+    void ADT7310::Reset()
+    {
+        Select();
+        for (int n=0; n<4; n++) SendData(0xFF);
+        Deselect();
+        wait_us(500);    
+    }
+
+    // Set configuration register
+    void ADT7310::SetConfigReg(uint8_t value)
+    {
+        Select();
+        SendWrite(CONFIG);  // for write to config. reg.
+        SendData(value);
+        Deselect();
+    }
+    
+    // Set resolution
+    void ADT7310::SetResolution16(bool res)
+    {
+        uint8_t config = GetConfigReg() & 0x7f;
+        if (res) SetConfigReg(config | 0x80);
+        else     SetConfigReg(config);
+    }
+
+    // Get specified register
+    uint8_t ADT7310::GetReg(Reg myReg)
+    {
+        Select();
+        SendRead(myReg);
+        uint8_t value = SendData(0x00);
+        Deselect();
+        return value;
+    }
+
+    // Read data and translate to temperature
+    float ADT7310::Read()
+    {
+        while ((GetStatusReg() & 0x80) != 0x00) {}
+        
+        Select();
+        SendRead(DATA);
+        int16_t data = SendData() << 8;
+        data |= SendData();
+        Deselect();
+
+        uint8_t config = GetConfigReg() & 0x80;
+        SetConfigReg(0x20 | config);     // Start conversion
+
+        return data/128.0f;    
+    }
+}