upm/examples/c++/tca9548a.cxx

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/*
* Author: Gerard Vidal <gerard.vidal@ens-lyon.fr>
* 2017 IFE ENS de Lyon
*
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <iostream>
#include <string.h>
#include "tca9548a.hpp"
using namespace std;
using namespace upm;
/*
* This examble is built to multiplex channel 2 and Channel 4
*
*/
void
showAllPorts(upm::TCA9548A& multiplex)
{
int i;
char ports[80];
std::string convert;
for (i = 0; i < 8; i++) {
if (multiplex.getPort(i))
strcat(ports, "1.");
else
strcat(ports, "0.");
}
cout << "Ports: " << ports;
}
int
main(int argc, char** argv)
{
// Instantiate a TCA9548A instance of i2c multiplexer
upm::TCA9548A multiplex(0);
// Clean
multiplex.disableAllPorts();
cout << "All ports disabled.";
// Open i2c bus on multiplexer channel 4
multiplex.setPort(4, multiplex.ENABLED, multiplex.EXCLUSIVE);
cout << "Port 4 enabled with exclusive access.";
showAllPorts(multiplex);
// Close com with channel 4
multiplex.disableAllPorts();
// Open i2c bus on multiplexer channel 2
multiplex.setPort(2, multiplex.ENABLED, multiplex.EXCLUSIVE);
cout << "Port 2 enabled with exclusive access.";
showAllPorts(multiplex);
// close com with channel 2
multiplex.disableAllPorts();
// Open 2 i2c bus on multiplexer channel 4 and channel2
multiplex.setPort(4, multiplex.ENABLED, multiplex.EXCLUSIVE);
multiplex.setPort(2, multiplex.ENABLED, multiplex.INCLUSIVE);
cout << "Port 4 enabled with exclusive access.";
cout << "Port 2 enabled with exclusive access.";
showAllPorts(multiplex);
// close com with all channels
multiplex.disableAllPorts();
// Open i2c bus on all multiplexer channels
multiplex.enableAllPorts();
cout << "All ports enabled.";
showAllPorts(multiplex);
// close com with all channels
multiplex.disableAllPorts();
return 0;
}