Satoshi Nihonyanagi / MCP3425AK

Library for Akizuki MCP3425 ADC module

Fork of MCP3425 by yasuyuki onodera

Library for MCP3425 ADC module from Akizuki-denshi.

MCP3425.h@2:7375e645e806, 2016-04-13 (annotated)

Committer:
sakurahilljp
Date:
Wed Apr 13 14:45:11 2016 +0000
Revision:
2:7375e645e806
Parent:
1:5ac344aa0aac
Child:
3:378672292488
Added to methods to  specify gain, resolution and conversion operation mode.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yasuyuki 0:b7bc51be525f 1 //**********************
yasuyuki 0:b7bc51be525f 2 // MCP3425.h for mbed
yasuyuki 0:b7bc51be525f 3 //
yasuyuki 0:b7bc51be525f 4 // (C)Copyright 2014 All rights reserved by Y.Onodera
yasuyuki 0:b7bc51be525f 5 // http://einstlab.web.fc2.com
yasuyuki 0:b7bc51be525f 6 //**********************
yasuyuki 0:b7bc51be525f 7
yasuyuki 0:b7bc51be525f 8 #ifndef MCP3425_H_
yasuyuki 0:b7bc51be525f 9 #define MCP3425_H_
yasuyuki 0:b7bc51be525f 10
sakurahilljp 2:7375e645e806 11 #include "mbed.h"
yasuyuki 0:b7bc51be525f 12
sakurahilljp 2:7375e645e806 13 class MCP3425
yasuyuki 0:b7bc51be525f 14 {
sakurahilljp 2:7375e645e806 15 public:
yasuyuki 0:b7bc51be525f 16
sakurahilljp 2:7375e645e806 17 static const int ADDR;
sakurahilljp 2:7375e645e806 18 static const float VREF;
sakurahilljp 2:7375e645e806 19
sakurahilljp 2:7375e645e806 20 enum Gain { G1 = 0, G2 = 1, G4 = 2, G8 = 3 };
sakurahilljp 2:7375e645e806 21 enum Resolution {W12 = 0, W14 = 1, W16 = 2};
sakurahilljp 2:7375e645e806 22 enum Conversion {ONESHOT = 0, CONTINUOUS = 1};
yasuyuki 0:b7bc51be525f 23
sakurahilljp 2:7375e645e806 24 MCP3425(I2C& i2c);
sakurahilljp 2:7375e645e806 25 MCP3425(I2C& i2c, int addr);
sakurahilljp 2:7375e645e806 26
sakurahilljp 2:7375e645e806 27 void set(Gain gain);
sakurahilljp 2:7375e645e806 28 void set(Resolution resolution);
sakurahilljp 2:7375e645e806 29 void set(Conversion conversion);
sakurahilljp 2:7375e645e806 30
sakurahilljp 1:5ac344aa0aac 31 short get(); // Returns AD code
sakurahilljp 1:5ac344aa0aac 32 float read(); // Returns voltage
yasuyuki 0:b7bc51be525f 33
sakurahilljp 2:7375e645e806 34 private:
sakurahilljp 2:7375e645e806 35 typedef union
sakurahilljp 2:7375e645e806 36 {
sakurahilljp 2:7375e645e806 37 unsigned short int Val;
sakurahilljp 2:7375e645e806 38 unsigned char v[2];
sakurahilljp 2:7375e645e806 39 short S;
sakurahilljp 2:7375e645e806 40 struct
sakurahilljp 2:7375e645e806 41 {
sakurahilljp 2:7375e645e806 42 unsigned char LB;
sakurahilljp 2:7375e645e806 43 unsigned char HB;
sakurahilljp 2:7375e645e806 44 } byte;
sakurahilljp 2:7375e645e806 45 } WORD_VAL;
yasuyuki 0:b7bc51be525f 46
sakurahilljp 2:7375e645e806 47 typedef union {
sakurahilljp 2:7375e645e806 48 unsigned char UC;
sakurahilljp 2:7375e645e806 49 struct {
sakurahilljp 2:7375e645e806 50 unsigned char G:2; // 00=1, 01=2, 10=4, 11=8 Gain
sakurahilljp 2:7375e645e806 51 unsigned char S:2; // 00=12bits, 01=14bits, 10=16bits
sakurahilljp 2:7375e645e806 52 unsigned char OC:1; // 0=One-shot, 1=Continuous
sakurahilljp 2:7375e645e806 53 unsigned char C:2; // NA
sakurahilljp 2:7375e645e806 54 unsigned char RDY:1; // wrinting 1=Initiate, reading 0=Ready
sakurahilljp 2:7375e645e806 55 } bit;
sakurahilljp 2:7375e645e806 56 } CONFIG;
yasuyuki 0:b7bc51be525f 57
sakurahilljp 2:7375e645e806 58 I2C _i2c;
sakurahilljp 2:7375e645e806 59 int _addr;
sakurahilljp 2:7375e645e806 60
sakurahilljp 2:7375e645e806 61 CONFIG _cfg;
sakurahilljp 2:7375e645e806 62 WORD_VAL _val;
sakurahilljp 2:7375e645e806 63
sakurahilljp 2:7375e645e806 64 char _buf[3];
sakurahilljp 2:7375e645e806 65
sakurahilljp 2:7375e645e806 66 void _init();
sakurahilljp 2:7375e645e806 67 void _write_cfg();
sakurahilljp 2:7375e645e806 68 short _get_code();
yasuyuki 0:b7bc51be525f 69 };
yasuyuki 0:b7bc51be525f 70
yasuyuki 0:b7bc51be525f 71 #endif /* MCP3425_H_ */
yasuyuki 0:b7bc51be525f 72
yasuyuki 0:b7bc51be525f 73
yasuyuki 0:b7bc51be525f 74