void ListPins()

in BusTools/GpioTestTool/main.cpp [130:166]

• 34 lines of code
• 7 McCabe index (conditional complexity)

void ListPins ()
{
    auto controller = MakeDefaultController();

    INT32 pinCount;
    HRESULT hr = controller->get_PinCount(&pinCount);
    if (FAILED(hr)) {
        throw wexception(L"Failed to get pin count. (hr = 0x%x)", hr);
    }

    wprintf(L"The default GPIO controller has %d pins:\n", pinCount);
    for (INT32 pinNumber = 0; pinNumber < pinCount; ++pinNumber) {
        ComPtr<IGpioPin> pin;
        hr = controller->OpenPin(pinNumber, pin.GetAddressOf());
        switch (hr) {
        case S_OK:
            wprintf(L"  Pin %d is available\n", pinNumber);
            break;
        case __HRESULT_FROM_WIN32(ERROR_SHARING_VIOLATION):
            wprintf(L"  Pin %d is currently in use\n", pinNumber);
            break;
        case __HRESULT_FROM_WIN32(ERROR_NOT_FOUND):
            // pin is not available to applications; don't print anything
            break;
        case __HRESULT_FROM_WIN32(ERROR_GPIO_INCOMPATIBLE_CONNECT_MODE):
            wprintf(
                L"  Pin %d is currently muxed to a different function\n",
                pinNumber);
            break;
        default:
            wprintf(
                L"  Pin %d: unexpected error occurred attempting to open. (hr = 0x%x)\n",
                pinNumber,
                hr);
        }
    }
}