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/*
// Copyright (c) 2019 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Abstract: pwm-beeper test application
//
*/
#include <fcntl.h>
#include <linux/input.h>
#include <stdio.h>
#include <unistd.h>
#include <cstring>
#include <iostream>
int main(int argc, char** argv)
{
if (argc < 3)
{
std::cout << "usage: <input device> <sequence of 'tone in "
"Hz','duration in ms' pair>\n";
std::cout << "example: beeper-test /dev/input/event0 "
"2100,100,0,150,2500,50,0,50,2200,100\n";
return 1;
}
int fd;
if ((fd = open(argv[1], O_RDWR | O_CLOEXEC)) < 0)
{
perror("Failed to open input device");
return -1;
}
struct input_event event;
event.type = EV_SND;
event.code = SND_TONE;
char* pch = strtok(argv[2], ",");
while (pch != NULL)
{
event.value = atoi(pch);
pch = strtok(NULL, ",");
if (!pch)
{
std::cerr << "Invalid tone,duration pair\n";
close(fd);
return -1;
}
int durationMs = atoi(pch);
if (write(fd, &event, sizeof(struct input_event)) !=
sizeof(struct input_event))
{
perror("Failed to write a tone sound event");
close(fd);
return -1;
}
usleep(durationMs * 1000);
pch = strtok(NULL, ",");
}
close(fd);
return 0;
}
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