test tool for AB shutter (Bluetooth Remote Shutter)

main.m

//
//  main.m
//  abs3
//
//  Created by Masatoshi SEKI on 2017/10/12.
//  Copyright © 2017年 Masatoshi SEKI. All rights reserved.
//
#if 0
- Connected to device UUID: C9529529-C937-45B4-B3B6-D1476FFB111B Named: AB Shutter3
- UUID 2A50 Read Value: 0x028A2466820100
- UUID 2A19 Read Value: 0x63
- UUID 2A19 Unsubscribed
- UUID 2A19 Unsubscribed
- UUID 2A19 Read Value: 0x63
- Disconnected from device UUID: C9529529-C937-45B4-B3B6-D1476FFB111B Named: AB Shutter3
Address: FF-FF-3E-F8-69-12
Random Address: No
Services:
Paired: Yes
Configured: Yes
Connected: Yes
Vendor ID: 0x248A
Product ID: 0x8266
Class of Device: Low Energy
AFH: On
AFH Map: ffffffff1f
RSSI: -51
Role: Central
Connection Mode: Active Mode
Interval: 0 ms
#endif

#import <IOKit/hid/IOHIDManager.h>
#import <Foundation/Foundation.h>

IOHIDManagerRef manager;

void cleanUp() {
    CFRelease(manager);
}

void SignalHandler(int sigraised) {
    cleanUp();
    exit(0);
}

void handleInput(void *context, IOReturn result, void *sender, IOHIDValueRef valueRef) {
    if (result == kIOReturnSuccess) {

        IOHIDElementRef elementRef = IOHIDValueGetElement(valueRef);
        uint32_t usage = IOHIDElementGetUsage(elementRef);
        long value = IOHIDValueGetIntegerValue(valueRef);
        
        printf("elementRef: %ux usage: %ud value: %ld\n", (unsigned int)elementRef, usage, value);
    } else {
        printf("result: %x\n", result);
    }
}


int main(int argc, const char * argv[]) {
    signal(SIGINT, SignalHandler);

    manager = IOHIDManagerCreate(kCFAllocatorDefault, kIOHIDManagerOptionNone);
    NSDictionary* criteria = @{
                               @kIOHIDDeviceUsagePageKey: @(kHIDPage_GenericDesktop),
                                @kIOHIDDeviceUsageKey: @(kHIDUsage_GD_Keyboard),
                                @kIOHIDVendorIDKey: @(0x248A),
                                @kIOHIDProductIDKey: @(0x8266),
                                };
    IOHIDManagerSetDeviceMatching(manager, (__bridge CFDictionaryRef)criteria);
    IOHIDManagerScheduleWithRunLoop(manager, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
    IOReturn ret = IOHIDManagerOpen(manager, kIOHIDOptionsTypeSeizeDevice);
    if (ret != kIOReturnSuccess) {
        printf("Failed to open\n");
    } else {
        IOHIDManagerRegisterInputValueCallback(manager, &handleInput, NULL);
    }

    CFRunLoopRun();
    cleanUp();
    return 0;
}