88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
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#include "hidapi.h"
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#include "hidparse.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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const char padding[] = " "; // sixteen spaces
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void print_report_descriptor(FILE* fp, int depth, hid_item* item)
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{
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if (item->collection) {
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hid_item* c = item->collection;
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for (; c != NULL; c = c->next) {
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print_report_descriptor(fp, depth + 1, c);
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}
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} else {
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// it's a leaf
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fprintf(fp, "%sitem type %02x usage %08x bits %2d, report %02x\n", padding + (16 - depth),
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item->type, item->usage, item->report_size, item->report_id);
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}
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}
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int main(int argc, char* argv[])
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{
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#define MAX_STR 255
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wchar_t wstr[MAX_STR];
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int res;
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if (hid_init())
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return EXIT_FAILURE;
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if (argc == 1) {
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struct hid_device_info *devs, *cur_dev;
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devs = hid_enumerate(0x0, 0x0);
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cur_dev = devs;
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while (cur_dev) {
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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);
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printf("\n");
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printf(" Manufacturer: %ls\n", cur_dev->manufacturer_string);
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printf(" Product: %ls\n", cur_dev->product_string);
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printf(" Release: %hx\n", cur_dev->release_number);
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printf(" Interface: %d\n", cur_dev->interface_number);
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printf("\n");
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cur_dev = cur_dev->next;
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}
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hid_free_enumeration(devs);
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return EXIT_SUCCESS;
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}
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// assume argv[1] is path
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hid_device *handle;
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handle = hid_open_path(argv[1]);
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if (!handle) {
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fprintf(stderr, "unable to open device with path %s\n", argv[1]);
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return EXIT_FAILURE;
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}
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wstr[0] = 0x0000;
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res = hid_get_product_string(handle, wstr, MAX_STR);
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if (res < 0)
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fprintf(stderr, "Unable to read product string\n");
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printf("Product String: %ls\n", wstr);
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unsigned char descriptorBuffer[8192];
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int descriptorBytes = hid_get_descriptor(handle, descriptorBuffer, sizeof(descriptorBuffer));
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if (descriptorBytes < 0) {
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fprintf(stderr, "failed to read report descriptor");
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return EXIT_FAILURE;
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}
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hid_item* rootItem;
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res = hid_parse_reportdesc(descriptorBuffer, descriptorBytes, &rootItem);
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if (res != 0) {
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fprintf(stderr, "failure parsing report");
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return EXIT_FAILURE;
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}
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print_report_descriptor(stdout, 0, rootItem);
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hid_free_reportdesc(rootItem);
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return EXIT_SUCCESS;
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}
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