Revision 0:b7bc51be525f, committed 2014-10-15

Comitter:

yasuyuki

Date:

Wed Oct 15 14:37:59 2014 +0000

Commit message:

first release

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MCP3425.cpp	Wed Oct 15 14:37:59 2014 +0000
@@ -0,0 +1,50 @@
+//**********************
+// MCP3425.cpp for mbed
+//
+// MCP3425 mcp3425(P0_5,P0_4);
+// or
+// I2C i2c(P0_5,P0_4);
+// MCP3425 mcp3425(i2c);
+//
+// (C)Copyright 2014 All rights reserved by Y.Onodera
+// http://einstlab.web.fc2.com
+//**********************
+
+#include "mbed.h"
+#include "MCP3425.h"
+
+MCP3425::MCP3425 (PinName sda, PinName scl) : _i2c(sda, scl) {
+    init();
+}
+MCP3425::MCP3425 (I2C& p_i2c) : _i2c(p_i2c) {
+    init();
+}
+
+
+short MCP3425::get()
+{
+
+    _i2c.read( MCP3425_ADDR, buf, 3);
+
+    ad.byte.HB=buf[0];
+    ad.byte.LB=buf[1];
+    config.UC=buf[2];
+    return ad.S;
+ 
+}
+
+
+void MCP3425::init()
+{
+
+    config.bit.RDY=1;
+    config.bit.C=0;
+    config.bit.OC=1;
+    config.bit.S=2;
+    config.bit.G=0;
+    // Initiate Continuous 16bits, 15SPS
+    buf[0]=config.UC;
+    _i2c.write(MCP3425_ADDR, buf, 1);
+
+}
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MCP3425.h	Wed Oct 15 14:37:59 2014 +0000
@@ -0,0 +1,52 @@
+//**********************
+// MCP3425.h for mbed
+//
+// (C)Copyright 2014 All rights reserved by Y.Onodera
+// http://einstlab.web.fc2.com
+//**********************
+
+#ifndef MCP3425_H_
+#define MCP3425_H_
+
+#define MCP3425_ADDR                0xD0
+
+#include "mbed.h"
+#include "typedef.h"
+
+
+typedef union
+{
+    unsigned char UC;
+    struct
+    {
+        unsigned char G:2;      // 00=1, 01=2, 10=4, 11=8 Gain
+        unsigned char S:2;      // 00=12bits, 01=14bits, 10=16bits
+        unsigned char OC:1;     // 0=One-shot, 1=Continuous
+        unsigned char C:2;      // NA
+        unsigned char RDY:1;    // wrinting 1=Initiate, reading 0=Ready
+    } bit;
+} CONFIG;
+
+
+
+class MCP3425{
+public:
+    MCP3425 (PinName sda, PinName scl);
+    MCP3425 (I2C& p_i2c);
+    void init();
+    short get();
+
+protected:
+    
+    I2C _i2c;
+
+    CONFIG config;
+    WORD_VAL ad;
+    char buf[3];
+
+};
+
+#endif /* MCP3425_H_ */
+
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/typedef.h	Wed Oct 15 14:37:59 2014 +0000
@@ -0,0 +1,55 @@
+//**********************
+// typedef for mbed
+//
+// Condition:
+//
+// (C)Copyright 2014 All rights reserved by Y.Onodera
+// http://einstlab.web.fc2.com
+//**********************
+#ifndef TYPEDEF_H
+#define TYPEDEF_H
+
+typedef unsigned char       BYTE;                           /* 8-bit unsigned  */
+typedef unsigned short int  WORD;                           /* 16-bit unsigned */
+typedef unsigned int        DWORD;                          /* 32-bit unsigned */
+typedef unsigned long long  QWORD;                          /* 64-bit unsigned */
+
+
+typedef union
+{
+    WORD Val;
+    BYTE v[2];
+    short S;
+    struct
+    {
+        BYTE LB;
+        BYTE HB;
+    } byte;
+} WORD_VAL;
+
+typedef union
+{
+    DWORD Val;
+    WORD w[2];
+    BYTE v[4];
+    struct
+    {
+        WORD LW;
+        WORD HW;
+    } word;
+    struct
+    {
+        BYTE LB;
+        BYTE HB;
+        BYTE UB;
+        BYTE MB;
+    } byte;
+    struct
+    {
+        WORD_VAL low;
+        WORD_VAL high;
+    }wordUnion;
+
+} DWORD_VAL;
+
+#endif /* TYPEDEF_H */