Kazuaki Hongu / ADS1100

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ADS1100.cpp

Committer:
hongu
Date:
2018-08-03
Revision:
5:687975ef50d2
Parent:
4:25de15d742ba
Child:
6:160ba0125b18

File content as of revision 5:687975ef50d2:

//**********************
// ADS1100.cpp for mbed
//
// (C)Copyright 2018 All rights reserved by K.Hongu
//**********************

#include "mbed.h"
#include "ADS1100.h"

ADS1100::ADS1100 (PinName sda, PinName scl, char addr) : _i2c(sda, scl) {
    init(addr);
}
ADS1100::ADS1100 (I2C& p_i2c, char addr) : _i2c(p_i2c) {
    init(addr);
}

void ADS1100::init(char addr) {
    address = ADS1100_ADDR + (addr << 1); // make address
    config.bit.ST=0; // must be 0
    config.bit.RE=0; // must be 0
    config.bit.SC=0; // continuous mode
    config.bit.DR=3; // 8SPS
    config.bit.PGA=0; // 1倍 GAIN
    
    buf[0] = config.UC;
    
    _i2c.write(address, buf, 1);
}

void ADS1100::init() {
    config.bit.ST=0; // must be 0
    config.bit.RE=0; // must be 0
    config.bit.SC=0; // continuous mode
    config.bit.DR=3; // 8SPS
    config.bit.PGA=0; // 1倍 GAIN   
    
    buf[0] = config.UC; 
    
    _i2c.write(address, buf, 1);
}

short ADS1100::get() {

    _i2c.read(address , buf, 3);

    result.byte.UB=buf[1];
    result.byte.LB=buf[0];
    config.UC=buf[2];
    if (config.UC == 0b10001100) {
        init();
    }
    return result.S; // 16bit
}

//char ADS1100::get() {
//    _i2c.read(address , buf, 3);
//
//    result.byte.UB=buf[1];
//    result.byte.LB=buf[0];
//    config.UC=buf[2];
//    
//    return config.UC;
//}