int main(void) {
piHiPri(20);
wiringPiSetup();
struct encoder *encoder = setupencoder(
ROTARY_PIN_A,
ROTARY_PIN_B,
ROTARY_BUTTON
);
long last_value = -1;
double hold_time = 0;
while (1) {
// Divide by three since it counts
// about 3 value increments per "tick" which is too much.
long curr = lround(encoder->value);
if(curr != last_value) {
printf("v %ld\n", curr);
fflush(stdout);
last_value = curr;
}
if(encoder->button_was_pressed && encoder->button_curr_pressed) {
encoder->button_was_pressed = false;
printf("p 1\n");
fflush(stdout);
}
if(encoder->button_time.tv_sec > 0) {
struct timeval now;
gettimeofday(&now, NULL);
hold_time = now.tv_sec - encoder->button_time.tv_sec;
hold_time += (now.tv_usec - encoder->button_time.tv_usec) / (1000.0 * 1000.0);
printf("t %f\n", hold_time);
fflush(stdout);
} else {
hold_time = 0;
}
if(encoder->button_was_released && !encoder->button_curr_pressed) {
encoder->button_was_released = false;
printf("p 0\n");
fflush(stdout);
}
// Sleep for a short amount to save cpu-time:
struct timespec delay = {
.tv_sec = 0,
.tv_nsec = 1000 * 1000 * 25,
};
nanosleep(&delay, NULL);
}
return EXIT_SUCCESS;
}
int main()
{
CURL *curl;
CURLcode res;
wiringPiSetup () ;
/*using pins 23/24*/
struct encoder *encoder = setupencoder(4,5,6);
int buttonState;
long value;
char buffer[250];
while (1)
{
updateEncoders();
buttonState = digitalRead(6);
long l = encoder->value;
if(l!=value)
{
printf("value: %d\n", (void *)l);
curl=curl_easy_init();
sprintf(buffer, "http://127.0.0.1/jsonrpc?request={\"jsonrpc\":\"2.0\",\"method\":\"Application.SetVolume\",\"params\":{\"volume\":%d},\"id\":1}", l);
curl_easy_setopt(curl, CURLOPT_URL, buffer);
/* Perform the request, res will get the return code */
res = curl_easy_perform(curl);
/* Check for errors */
if(res != CURLE_OK)
{
fprintf(stderr, "curl_easy_perform() failed: %s\n",curl_easy_strerror(res));
}
/* always cleanup */
curl_easy_cleanup(curl);
value = l;
}
if(buttonState==1)
{
curl=curl_easy_init();
sprintf(buffer, "http://127.0.0.1/jsonrpc?request={\"jsonrpc\":\"2.0\",\"method\":\"Player.PlayPause\",\"params\":{\"playerid\":0},\"id\":1}");
curl_easy_setopt(curl, CURLOPT_URL, buffer);
/* Perform the request, res will get the return code */
res = curl_easy_perform(curl);
printf("Button pushed!\n");
delay(1);
}
}
return(0);
}
int main(int argc, char **argv)
{
ros::init(argc, argv, "talker");
ros::NodeHandle n;
ros::Publisher pub = n.advertise<pi_rotary_encoder::ParamUpdate>("parameter_update", 1000);
ros::Rate loop_rate(10);
//int r = wiringPiSetup();
int r = wiringPiSetup();
revokeRoot();
printf("setup: %d\n", r);
// wiringPiSetup requires sudo, wiringPiSetupSys requires you add this to your /etc/rc.local:
//
// for example, to use pin 23 as an input:
//
// gpio export 23 in
//
struct encoder *encoder = setupencoder(4,5);
long value;
while (ros::ok())
{
updateEncoders();
long l = encoder->value;
if (l!=value)
{
printf("value: %d\n", (void *)l);
value = l;
pi_rotary_encoder::ParamUpdate msg;
msg.parameter = "shutter_speed";
msg.value = value*10;
pub.publish(msg);
}
ros::spinOnce();
loop_rate.sleep();
}
}
void KeyboardInput::setupRotaryEncoder()
{
wiringPiSetup();
encoder = setupencoder(4, 5, 6);
}
