libicsneo/examples/c2/reconnect/src/main.c

133 lines
3.6 KiB
C

#include <icsneo/icsneoc2.h>
#include <stdio.h>
#ifdef _WIN32
#include <windows.h>
#else
#include <unistd.h>
#endif
void sleep_ms(uint32_t ms) {
#ifdef _WIN32
Sleep(ms);
#else
usleep(ms * 1000);
#endif
}
int print_error_code(const char* message, icsneoc2_error_t error) {
char error_str[64];
size_t error_str_len = sizeof(error_str);
icsneoc2_error_t res = icsneoc2_error_code_get(error, error_str, &error_str_len);
if(res != icsneoc2_error_success) {
printf("%s: Failed to get string for error code %d with error code %d\n", message, error, res);
return res;
}
printf("%s: \"%s\" (%u)\n", message, error_str, error);
return (int)error;
}
void print_events(void) {
icsneoc2_event_t* events[256] = {0};
size_t events_count = 256;
for(size_t i = 0; i < events_count; ++i) {
icsneoc2_error_t res = icsneoc2_event_get(&events[i], NULL);
if(res != icsneoc2_error_success) {
(void)print_error_code("\tFailed to get events", res);
return;
}
if(events[i] == NULL) {
events_count = i;
break;
}
}
for(size_t i = 0; i < events_count; i++) {
char description[255] = {0};
size_t description_length = 255;
icsneoc2_error_t res = icsneoc2_event_description_get(events[i], description, &description_length);
if(res != icsneoc2_error_success) {
print_error_code("\tFailed to get event description", res);
continue;
}
printf("\tEvent %zu: %s\n", i, description);
}
for(size_t i = 0; i < events_count; i++) {
icsneoc2_event_free(events[i]);
}
if(events_count > 0) {
printf("\tReceived %zu events\n", events_count);
}
}
int main(void) {
/* Open the first available device */
printf("Opening first available device...\n");
icsneoc2_device_t* device = NULL;
icsneoc2_error_t res = icsneoc2_device_open_first(0, icsneoc2_open_options_default, &device);
if(res != icsneoc2_error_success) {
return print_error_code("Failed to open first device", res);
}
/* Get a description of the opened device */
char description[255] = {0};
size_t description_length = 255;
res = icsneoc2_device_description_get(device, description, &description_length);
if(res != icsneoc2_error_success) {
icsneoc2_device_free(device);
return print_error_code("Failed to get device description", res);
}
printf("Opened device: %s\n", description);
/* Wait for the device to disconnect */
printf("Waiting for device to disconnect (unplug device from PC)...\n");
for(;;) {
bool is_open = true;
res = icsneoc2_device_is_open(device, &is_open);
if(res != icsneoc2_error_success) {
print_events();
icsneoc2_device_free(device);
return print_error_code("Failed to check open status", res);
}
if(!is_open) {
printf("Device disconnected!\n");
break;
}
sleep_ms(500);
}
/* Attempt to reconnect */
uint32_t timeout_ms = 20000; // 20 second timeout
printf("Attempting to reconnect (%u second timeout)...\n", timeout_ms / 1000);
res = icsneoc2_device_reconnect(device, icsneoc2_open_options_default, timeout_ms);
if(res != icsneoc2_error_success) {
print_events();
icsneoc2_device_free(device);
return print_error_code("Failed to reconnect", res);
}
printf("Reconnected successfully!\n");
/* Verify by getting the description again */
description_length = 255;
res = icsneoc2_device_description_get(device, description, &description_length);
if(res == icsneoc2_error_success) {
printf("Device: %s\n", description);
}
/* Print any events */
print_events();
/* Close the device */
printf("Closing device...\n");
res = icsneoc2_device_close(device);
if(res != icsneoc2_error_success) {
icsneoc2_device_free(device);
return print_error_code("Failed to close device", res);
}
icsneoc2_device_free(device);
printf("Done.\n");
return 0;
}