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5cefe7f5f3
Cleanup of UPM C++ examples. Switched from heap allocation to
stack allocation when possible. This simplifies the samples since it
removes the need for explicit memory management. A script was used to
identify and replace pointer use. To simplify the replace script, I
re-formatted the C++ examples using the UPM .clang-format file.
Unfortuantely this changes the look of the UPM C++ examples to a large
degree. However, examples will now have a standard look/feel and
uniform formatting.
* Ran clang-format w/provided UPM .clang-format file
* Removed new's/delete's whenever possible (left those in interface
examples)
* Added IIO sensor library implementation of callback void* arg
* Converted all sleeps to upm defined delays (added header when
necessary)
* Scrubbed CXX example includes
Signed-off-by: Noel Eck <noel.eck@intel.com>
110 lines
3.5 KiB
C++
110 lines
3.5 KiB
C++
/*
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* Author: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
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* Copyright (c) 2016 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/* This example demonstrates how to use one of the ADS1115 ADCs on the
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* DFRobot Joule Shield with devices that output a small differential
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* voltage (e.g. geophones, piezoelectric bands or pads, thermocouples).
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*/
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#include <fstream>
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#include <iostream>
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#include <string>
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#include <thread>
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#include "ads1115.hpp"
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#include "ads1x15.hpp"
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#include "upm_utilities.h"
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using namespace std;
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using namespace upm;
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bool running = true; // Controls main read/write loop
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// Thread function
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void
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stop()
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{
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upm_delay(10);
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running = false;
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}
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int
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main()
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{
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//! [Interesting]
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long id = 0; // Sample number
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string fileName = "./ads1115.data"; // Output filename
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ofstream f;
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// Initialize and configure the ADS1115 for the SM-24 Geophone
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// There are two ADS1115 chips on the DFRobot Joule Shield on the same I2C bus
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// - 0x48 gives access to pins A0 - A3
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// - 0x49 gives access to pins A4 - A7
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ADS1115 ads1115(0, 0x48);
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// Put the ADC into differential mode for pins A0 and A1,
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// the SM-24 Geophone is connected to these pins
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ads1115.getSample(ADS1X15::DIFF_0_1);
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// Set the gain based on expected VIN range to -/+ 2.048 V
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// Can be adjusted based on application to as low as -/+ 0.256 V, see API
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// documentation for details
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ads1115.setGain(ADS1X15::GAIN_TWO);
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// Set the sample rate to 860 samples per second (max) and turn on continuous
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// sampling
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ads1115.setSPS(ADS1115::SPS_860);
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ads1115.setContinuous(true);
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// Enable exceptions from the output stream
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f.exceptions(ofstream::failbit | ofstream::badbit);
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// Open the file
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try {
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f.open(fileName);
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// Output formatting
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f.setf(ios_base::fixed);
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f.precision(7);
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// Start the thread that will stop logging after 10 seconds
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thread timer(stop);
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// Read sensor data and write it to the output file every ms
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while (running) {
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f << id++ << " " << ads1115.getLastSample() << endl;
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upm_delay_us(1000);
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}
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// Clean-up and exit
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timer.join();
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f.close();
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} catch (ios_base::failure& e) {
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cout << "Failed to write to file: " << e.what() << endl;
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return 1;
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}
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cout << "Wrote " << id << " samples to file: " << fileName << endl;
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//! [Interesting]
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return 0;
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}
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