sdl

hidtest.cpp (4643B)

---

 /*******************************************************
  Windows HID simplification
 
  Alan Ott
  Signal 11 Software
 
  8/22/2009
 
  Copyright 2009
  
  This contents of this file may be used by anyone
  for any reason without any conditions and may be
  used as a starting point for your own applications
  which use HIDAPI.
 ********************************************************/
 
 #include <stdio.h>
 #include <wchar.h>
 #include <string.h>
 #include <stdlib.h>
 #include "hidapi.h"
 
 // Headers needed for sleeping.
 #ifdef _WIN32
 	#include <windows.h>
 #else
 	#include <unistd.h>
 #endif
 
 int main(int argc, char* argv[])
 {
 	int res;
 	unsigned char buf[256];
 	#define MAX_STR 255
 	wchar_t wstr[MAX_STR];
 	hid_device *handle;
 	int i;
 
 #ifdef WIN32
 	UNREFERENCED_PARAMETER(argc);
 	UNREFERENCED_PARAMETER(argv);
 #endif
 
 	struct hid_device_info *devs, *cur_dev;
 	
 	if (hid_init())
 		return -1;
 
 	devs = hid_enumerate(0x0, 0x0);
 	cur_dev = devs;	
 	while (cur_dev) {
 		printf("Device Found\n  type: %04hx %04hx\n  path: %s\n  serial_number: %ls", cur_dev->vendor_id, cur_dev->product_id, cur_dev->path, cur_dev->serial_number);
 		printf("\n");
 		printf("  Manufacturer: %ls\n", cur_dev->manufacturer_string);
 		printf("  Product:      %ls\n", cur_dev->product_string);
 		printf("  Release:      %hx\n", cur_dev->release_number);
 		printf("  Interface:    %d\n",  cur_dev->interface_number);
 		printf("\n");
 		cur_dev = cur_dev->next;
 	}
 	hid_free_enumeration(devs);
 
 	// Set up the command buffer.
 	memset(buf,0x00,sizeof(buf));
 	buf[0] = 0x01;
 	buf[1] = 0x81;
 	
 
 	// Open the device using the VID, PID,
 	// and optionally the Serial number.
 	////handle = hid_open(0x4d8, 0x3f, L"12345");
 	handle = hid_open(0x4d8, 0x3f, NULL);
 	if (!handle) {
 		printf("unable to open device\n");
  		return 1;
 	}
 
 	// Read the Manufacturer String
 	wstr[0] = 0x0000;
 	res = hid_get_manufacturer_string(handle, wstr, MAX_STR);
 	if (res < 0)
 		printf("Unable to read manufacturer string\n");
 	printf("Manufacturer String: %ls\n", wstr);
 
 	// Read the Product String
 	wstr[0] = 0x0000;
 	res = hid_get_product_string(handle, wstr, MAX_STR);
 	if (res < 0)
 		printf("Unable to read product string\n");
 	printf("Product String: %ls\n", wstr);
 
 	// Read the Serial Number String
 	wstr[0] = 0x0000;
 	res = hid_get_serial_number_string(handle, wstr, MAX_STR);
 	if (res < 0)
 		printf("Unable to read serial number string\n");
 	printf("Serial Number String: (%d) %ls", wstr[0], wstr);
 	printf("\n");
 
 	// Read Indexed String 1
 	wstr[0] = 0x0000;
 	res = hid_get_indexed_string(handle, 1, wstr, MAX_STR);
 	if (res < 0)
 		printf("Unable to read indexed string 1\n");
 	printf("Indexed String 1: %ls\n", wstr);
 
 	// Set the hid_read() function to be non-blocking.
 	hid_set_nonblocking(handle, 1);
 	
 	// Try to read from the device. There shoud be no
 	// data here, but execution should not block.
 	res = hid_read(handle, buf, 17);
 
 	// Send a Feature Report to the device
 	buf[0] = 0x2;
 	buf[1] = 0xa0;
 	buf[2] = 0x0a;
 	buf[3] = 0x00;
 	buf[4] = 0x00;
 	res = hid_send_feature_report(handle, buf, 17);
 	if (res < 0) {
 		printf("Unable to send a feature report.\n");
 	}
 
 	memset(buf,0,sizeof(buf));
 
 	// Read a Feature Report from the device
 	buf[0] = 0x2;
 	res = hid_get_feature_report(handle, buf, sizeof(buf));
 	if (res < 0) {
 		printf("Unable to get a feature report.\n");
 		printf("%ls", hid_error(handle));
 	}
 	else {
 		// Print out the returned buffer.
 		printf("Feature Report\n   ");
 		for (i = 0; i < res; i++)
 			printf("%02hhx ", buf[i]);
 		printf("\n");
 	}
 
 	memset(buf,0,sizeof(buf));
 
 	// Toggle LED (cmd 0x80). The first byte is the report number (0x1).
 	buf[0] = 0x1;
 	buf[1] = 0x80;
 	res = hid_write(handle, buf, 17);
 	if (res < 0) {
 		printf("Unable to write()\n");
 		printf("Error: %ls\n", hid_error(handle));
 	}
 	
 
 	// Request state (cmd 0x81). The first byte is the report number (0x1).
 	buf[0] = 0x1;
 	buf[1] = 0x81;
 	hid_write(handle, buf, 17);
 	if (res < 0)
 		printf("Unable to write() (2)\n");
 
 	// Read requested state. hid_read() has been set to be
 	// non-blocking by the call to hid_set_nonblocking() above.
 	// This loop demonstrates the non-blocking nature of hid_read().
 	res = 0;
 	while (res == 0) {
 		res = hid_read(handle, buf, sizeof(buf));
 		if (res == 0)
 			printf("waiting...\n");
 		if (res < 0)
 			printf("Unable to read()\n");
 		#ifdef WIN32
 		Sleep(500);
 		#else
 		usleep(500*1000);
 		#endif
 	}
 
 	printf("Data read:\n   ");
 	// Print out the returned buffer.
 	for (i = 0; i < res; i++)
 		printf("%02hhx ", buf[i]);
 	printf("\n");
 
 	hid_close(handle);
 
 	/* Free static HIDAPI objects. */
 	hid_exit();
 
 #ifdef WIN32
 	system("pause");
 #endif
 
 	return 0;
 }