upm/examples/c++/hm11.cxx
Mihai Tudor Panu 89d5de43e0 license: update to SPDX style license text throughout
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
2020-03-05 15:13:36 -08:00

104 lines
2.7 KiB
C++

/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2015 Intel Corporation.
*
* This program and the accompanying materials are made available under the
* terms of the The MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
*/
#include <iostream>
#include <stdio.h>
#include <string.h>
#include <string>
#include "hm11.hpp"
#include "upm_utilities.h"
using namespace std;
using namespace upm;
void
printUsage(char* progname)
{
cout << "Usage: " << progname << " [AT command]" << endl;
cout << endl;
cout << "If an argument is supplied on the command line, that argument is" << endl;
cout << "sent to the module and the response is printed out." << endl;
cout << endl;
cout << "If no argument is used, then the address and PIN of the module" << endl;
cout << "are queried and the results printed out." << endl;
cout << endl;
cout << endl;
}
// simple helper function to send a command and wait for a response
void
sendCommand(upm::HM11& ble, char* cmd)
{
char buffer[BUFSIZ];
ble.writeData(cmd, strlen(cmd));
// wait up to 1 second
if (ble.dataAvailable(1000)) {
memset(buffer, 0, BUFSIZ);
ble.readData(buffer, BUFSIZ - 1);
cout << "Returned: " << buffer << endl;
} else {
cerr << "Timed out waiting for response" << endl;
}
}
int
main(int argc, char** argv)
{
//! [Interesting]
// Instantiate a HM11 BLE Module on UART 0
upm::HM11 ble(0);
// make sure port is initialized properly. 9600 baud is the default.
if (!ble.setupTty(B9600)) {
cerr << "Failed to setup tty port parameters" << endl;
return 1;
}
printUsage(argv[0]);
if (argc > 1) {
cout << "Sending command line argument (" << argv[1] << ")..." << endl;
sendCommand(ble, argv[1]);
} else {
// query the module address
char addr[] = "AT+ADDR?";
cout << "Querying module address (" << addr << ")..." << endl;
sendCommand(ble, addr);
upm_delay(1);
// query the module address
char pin[] = "AT+PASS?";
cout << "Querying module PIN (" << pin << ")..." << endl;
sendCommand(ble, pin);
// Other potentially useful commands are:
//
// AT+VERS? - query module version
// AT+ROLE0 - set as slave
// AT+ROLE1 - set as master
// AT+CLEAR - clear all previous settings
// AT+RESET - restart the device
//
// A comprehensive list is available from the datasheet at:
// http://www.seeedstudio.com/wiki/images/c/cd/Bluetooth4_en.pdf
}
//! [Interesting]
return 0;
}