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"path": "LG-Ultrafine-Brightness/hidapi.h",
"content": "/*******************************************************\nHIDAPI - Multi-Platform library for\ncommunication with HID devices.\n\nAlan Ott\nSignal 11 Software\n\n8/22/2009\n\nCopyright 2009, All Rights Reserved.\n\nAt the discretion of the user of this library,\nthis software may be licensed under the terms of the\nGNU General Public License v3, a BSD-Style license, or the\noriginal HIDAPI license as outlined in the LICENSE.txt,\nLICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt\nfiles located at the root of the source distribution.\nThese files may also be found in the public source\ncode repository located at:\nhttp://github.com/signal11/hidapi .\n********************************************************/\n\n/** @file\n* @defgroup API hidapi API\n*/\n\n#ifndef HIDAPI_H__\n#define HIDAPI_H__\n\n#include \n\n#ifdef _WIN32\n#define HID_API_EXPORT __declspec(dllexport)\n#define HID_API_CALL\n#else\n#define HID_API_EXPORT /**< API export macro */\n#define HID_API_CALL /**< API call macro */\n#endif\n\n#define HID_API_EXPORT_CALL HID_API_EXPORT HID_API_CALL /**< API export and call macro*/\n\n#ifdef __cplusplus\nextern \"C\" {\n#endif\n\tstruct hid_device_;\n\ttypedef struct hid_device_ hid_device; /**< opaque hidapi structure */\n\n\t\t\t\t\t\t\t\t\t\t /** hidapi info structure */\n\tstruct hid_device_info {\n\t\t/** Platform-specific device path */\n\t\tchar *path;\n\t\t/** Device Vendor ID */\n\t\tunsigned short vendor_id;\n\t\t/** Device Product ID */\n\t\tunsigned short product_id;\n\t\t/** Serial Number */\n\t\twchar_t *serial_number;\n\t\t/** Device Release Number in binary-coded decimal,\n\t\talso known as Device Version Number */\n\t\tunsigned short release_number;\n\t\t/** Manufacturer String */\n\t\twchar_t *manufacturer_string;\n\t\t/** Product string */\n\t\twchar_t *product_string;\n\t\t/** Usage Page for this Device/Interface\n\t\t(Windows/Mac only). */\n\t\tunsigned short usage_page;\n\t\t/** Usage for this Device/Interface\n\t\t(Windows/Mac only).*/\n\t\tunsigned short usage;\n\t\t/** The USB interface which this logical device\n\t\trepresents. Valid on both Linux implementations\n\t\tin all cases, and valid on the Windows implementation\n\t\tonly if the device contains more than one interface. */\n\t\tint interface_number;\n\n\t\t/** Pointer to the next device */\n\t\tstruct hid_device_info *next;\n\t};\n\n\n\t/** @brief Initialize the HIDAPI library.\n\n\tThis function initializes the HIDAPI library. Calling it is not\n\tstrictly necessary, as it will be called automatically by\n\thid_enumerate() and any of the hid_open_*() functions if it is\n\tneeded. This function should be called at the beginning of\n\texecution however, if there is a chance of HIDAPI handles\n\tbeing opened by different threads simultaneously.\n\n\t@ingroup API\n\n\t@returns\n\tThis function returns 0 on success and -1 on error.\n\t*/\n\tint HID_API_EXPORT HID_API_CALL hid_init(void);\n\n\t/** @brief Finalize the HIDAPI library.\n\n\tThis function frees all of the static data associated with\n\tHIDAPI. It should be called at the end of execution to avoid\n\tmemory leaks.\n\n\t@ingroup API\n\n\t@returns\n\tThis function returns 0 on success and -1 on error.\n\t*/\n\tint HID_API_EXPORT HID_API_CALL hid_exit(void);\n\n\t/** @brief Enumerate the HID Devices.\n\n\tThis function returns a linked list of all the HID devices\n\tattached to the system which match vendor_id and product_id.\n\tIf @p vendor_id is set to 0 then any vendor matches.\n\tIf @p product_id is set to 0 then any product matches.\n\tIf @p vendor_id and @p product_id are both set to 0, then\n\tall HID devices will be returned.\n\n\t@ingroup API\n\t@param vendor_id The Vendor ID (VID) of the types of device\n\tto open.\n\t@param product_id The Product ID (PID) of the types of\n\tdevice to open.\n\n\t@returns\n\tThis function returns a pointer to a linked list of type\n\tstruct #hid_device, containing information about the HID devices\n\tattached to the system, or NULL in the case of failure. Free\n\tthis linked list by calling hid_free_enumeration().\n\t*/\n\tstruct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id);\n\n\t/** @brief Free an enumeration Linked List\n\n\tThis function frees a linked list created by hid_enumerate().\n\n\t@ingroup API\n\t@param devs Pointer to a list of struct_device returned from\n\thid_enumerate().\n\t*/\n\tvoid HID_API_EXPORT HID_API_CALL hid_free_enumeration(struct hid_device_info *devs);\n\n\t/** @brief Open a HID device using a Vendor ID (VID), Product ID\n\t(PID) and optionally a serial number.\n\n\tIf @p serial_number is NULL, the first device with the\n\tspecified VID and PID is opened.\n\n\t@ingroup API\n\t@param vendor_id The Vendor ID (VID) of the device to open.\n\t@param product_id The Product ID (PID) of the device to open.\n\t@param serial_number The Serial Number of the device to open\n\t(Optionally NULL).\n\n\t@returns\n\tThis function returns a pointer to a #hid_device object on\n\tsuccess or NULL on failure.\n\t*/\n\tHID_API_EXPORT hid_device * HID_API_CALL hid_open(unsigned short vendor_id, unsigned short product_id, const wchar_t *serial_number);\n\n\t/** @brief Open a HID device by its path name.\n\n\tThe path name be determined by calling hid_enumerate(), or a\n\tplatform-specific path name can be used (eg: /dev/hidraw0 on\n\tLinux).\n\n\t@ingroup API\n\t@param path The path name of the device to open\n\n\t@returns\n\tThis function returns a pointer to a #hid_device object on\n\tsuccess or NULL on failure.\n\t*/\n\tHID_API_EXPORT hid_device * HID_API_CALL hid_open_path(const char *path);\n\n\t/** @brief Write an Output report to a HID device.\n\n\tThe first byte of @p data[] must contain the Report ID. For\n\tdevices which only support a single report, this must be set\n\tto 0x0. The remaining bytes contain the report data. Since\n\tthe Report ID is mandatory, calls to hid_write() will always\n\tcontain one more byte than the report contains. For example,\n\tif a hid report is 16 bytes long, 17 bytes must be passed to\n\thid_write(), the Report ID (or 0x0, for devices with a\n\tsingle report), followed by the report data (16 bytes). In\n\tthis example, the length passed in would be 17.\n\n\thid_write() will send the data on the first OUT endpoint, if\n\tone exists. If it does not, it will send the data through\n\tthe Control Endpoint (Endpoint 0).\n\n\t@ingroup API\n\t@param device A device handle returned from hid_open().\n\t@param data The data to send, including the report number as\n\tthe first byte.\n\t@param length The length in bytes of the data to send.\n\n\t@returns\n\tThis function returns the actual number of bytes written and\n\t-1 on error.\n\t*/\n\tint HID_API_EXPORT HID_API_CALL hid_write(hid_device *device, const unsigned char *data, size_t length);\n\n\t/** @brief Read an Input report from a HID device with timeout.\n\n\tInput reports are returned\n\tto the host through the INTERRUPT IN endpoint. The first byte will\n\tcontain the Report number if the device uses numbered reports.\n\n\t@ingroup API\n\t@param device A device handle returned from hid_open().\n\t@param data A buffer to put the read data into.\n\t@param length The number of bytes to read. For devices with\n\tmultiple reports, make sure to read an extra byte for\n\tthe report number.\n\t@param milliseconds timeout in milliseconds or -1 for blocking wait.\n\n\t@returns\n\tThis function returns the actual number of bytes read and\n\t-1 on error. If no packet was available to be read within\n\tthe timeout period, this function returns 0.\n\t*/\n\tint HID_API_EXPORT HID_API_CALL hid_read_timeout(hid_device *dev, unsigned char *data, size_t length, int milliseconds);\n\n\t/** @brief Read an Input report from a HID device.\n\n\tInput reports are returned\n\tto the host through the INTERRUPT IN endpoint. The first byte will\n\tcontain the Report number if the device uses numbered reports.\n\n\t@ingroup API\n\t@param device A device handle returned from hid_open().\n\t@param data A buffer to put the read data into.\n\t@param length The number of bytes to read. For devices with\n\tmultiple reports, make sure to read an extra byte for\n\tthe report number.\n\n\t@returns\n\tThis function returns the actual number of bytes read and\n\t-1 on error. If no packet was available to be read and\n\tthe handle is in non-blocking mode, this function returns 0.\n\t*/\n\tint HID_API_EXPORT HID_API_CALL hid_read(hid_device *device, unsigned char *data, size_t length);\n\n\t/** @brief Set the device handle to be non-blocking.\n\n\tIn non-blocking mode calls to hid_read() will return\n\timmediately with a value of 0 if there is no data to be\n\tread. In blocking mode, hid_read() will wait (block) until\n\tthere is data to read before returning.\n\n\tNonblocking can be turned on and off at any time.\n\n\t@ingroup API\n\t@param device A device handle returned from hid_open().\n\t@param nonblock enable or not the nonblocking reads\n\t- 1 to enable nonblocking\n\t- 0 to disable nonblocking.\n\n\t@returns\n\tThis function returns 0 on success and -1 on error.\n\t*/\n\tint HID_API_EXPORT HID_API_CALL hid_set_nonblocking(hid_device *device, int nonblock);\n\n\t/** @brief Send a Feature report to the device.\n\n\tFeature reports are sent over the Control endpoint as a\n\tSet_Report transfer. The first byte of @p data[] must\n\tcontain the Report ID. For devices which only support a\n\tsingle report, this must be set to 0x0. The remaining bytes\n\tcontain the report data. Since the Report ID is mandatory,\n\tcalls to hid_send_feature_report() will always contain one\n\tmore byte than the report contains. For example, if a hid\n\treport is 16 bytes long, 17 bytes must be passed to\n\thid_send_feature_report(): the Report ID (or 0x0, for\n\tdevices which do not use numbered reports), followed by the\n\treport data (16 bytes). In this example, the length passed\n\tin would be 17.\n\n\t@ingroup API\n\t@param device A device handle returned from hid_open().\n\t@param data The data to send, including the report number as\n\tthe first byte.\n\t@param length The length in bytes of the data to send, including\n\tthe report number.\n\n\t@returns\n\tThis function returns the actual number of bytes written and\n\t-1 on error.\n\t*/\n\tint HID_API_EXPORT HID_API_CALL hid_send_feature_report(hid_device *device, const unsigned char *data, size_t length);\n\n\t/** @brief Get a feature report from a HID device.\n\n\tSet the first byte of @p data[] to the Report ID of the\n\treport to be read. Make sure to allow space for this\n\textra byte in @p data[]. Upon return, the first byte will\n\tstill contain the Report ID, and the report data will\n\tstart in data[1].\n\n\t@ingroup API\n\t@param device A device handle returned from hid_open().\n\t@param data A buffer to put the read data into, including\n\tthe Report ID. Set the first byte of @p data[] to the\n\tReport ID of the report to be read, or set it to zero\n\tif your device does not use numbered reports.\n\t@param length The number of bytes to read, including an\n\textra byte for the report ID. The buffer can be longer\n\tthan the actual report.\n\n\t@returns\n\tThis function returns the number of bytes read plus\n\tone for the report ID (which is still in the first\n\tbyte), or -1 on error.\n\t*/\n\tint HID_API_EXPORT HID_API_CALL hid_get_feature_report(hid_device *device, unsigned char *data, size_t length);\n\n\t/** @brief Close a HID device.\n\n\t@ingroup API\n\t@param device A device handle returned from hid_open().\n\t*/\n\tvoid HID_API_EXPORT HID_API_CALL hid_close(hid_device *device);\n\n\t/** @brief Get The Manufacturer String from a HID device.\n\n\t@ingroup API\n\t@param device A device handle returned from hid_open().\n\t@param string A wide string buffer to put the data into.\n\t@param maxlen The length of the buffer in multiples of wchar_t.\n\n\t@returns\n\tThis function returns 0 on success and -1 on error.\n\t*/\n\tint HID_API_EXPORT_CALL hid_get_manufacturer_string(hid_device *device, wchar_t *string, size_t maxlen);\n\n\t/** @brief Get The Product String from a HID device.\n\n\t@ingroup API\n\t@param device A device handle returned from hid_open().\n\t@param string A wide string buffer to put the data into.\n\t@param maxlen The length of the buffer in multiples of wchar_t.\n\n\t@returns\n\tThis function returns 0 on success and -1 on error.\n\t*/\n\tint HID_API_EXPORT_CALL hid_get_product_string(hid_device *device, wchar_t *string, size_t maxlen);\n\n\t/** @brief Get The Serial Number String from a HID device.\n\n\t@ingroup API\n\t@param device A device handle returned from hid_open().\n\t@param string A wide string buffer to put the data into.\n\t@param maxlen The length of the buffer in multiples of wchar_t.\n\n\t@returns\n\tThis function returns 0 on success and -1 on error.\n\t*/\n\tint HID_API_EXPORT_CALL hid_get_serial_number_string(hid_device *device, wchar_t *string, size_t maxlen);\n\n\t/** @brief Get a string from a HID device, based on its string index.\n\n\t@ingroup API\n\t@param device A device handle returned from hid_open().\n\t@param string_index The index of the string to get.\n\t@param string A wide string buffer to put the data into.\n\t@param maxlen The length of the buffer in multiples of wchar_t.\n\n\t@returns\n\tThis function returns 0 on success and -1 on error.\n\t*/\n\tint HID_API_EXPORT_CALL hid_get_indexed_string(hid_device *device, int string_index, wchar_t *string, size_t maxlen);\n\n\t/** @brief Get a string describing the last error which occurred.\n\n\t@ingroup API\n\t@param device A device handle returned from hid_open().\n\n\t@returns\n\tThis function returns a string containing the last error\n\twhich occurred or NULL if none has occurred.\n\t*/\n\tHID_API_EXPORT const wchar_t* HID_API_CALL hid_error(hid_device *device);\n\n#ifdef __cplusplus\n}\n#endif\n\n#endif\n\n"
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"path": "LG-Ultrafine-Brightness/main.cpp",
"content": "#include \n#include \n#include \n#include \"hidapi.h\"\n\nusing std::vector;\nconst uint16_t vendor_id = 0x43e;\nconst uint16_t product_id = 0x9a40;\nconst uint16_t max_brightness = 0xd2f0;\nconst uint16_t min_brightness = 0x0190;\n\nconst std::vector small_steps = {\n 0x0190, 0x01af, 0x01d2, 0x01f7,\n 0x021f, 0x024a, 0x0279, 0x02ac,\n 0x02e2, 0x031d, 0x035c, 0x03a1,\n 0x03eb, 0x043b, 0x0491, 0x04ee,\n 0x0553, 0x05c0, 0x0635, 0x06b3,\n 0x073c, 0x07d0, 0x086f, 0x091b,\n 0x09d5, 0x0a9d, 0x0b76, 0x0c60,\n 0x0d5c, 0x0e6c, 0x0f93, 0x10d0,\n 0x1227, 0x1399, 0x1529, 0x16d9,\n 0x18aa, 0x1aa2, 0x1cc1, 0x1f0b,\n 0x2184, 0x2430, 0x2712, 0x2a2e,\n 0x2d8b, 0x312b, 0x3516, 0x3951,\n 0x3de2, 0x42cf, 0x4822, 0x4de1,\n 0x5415, 0x5ac8, 0x6203, 0x69d2,\n 0x7240, 0x7b5a, 0x852d, 0x8fc9,\n 0x9b3d, 0xa79b, 0xb4f5, 0xc35f,\n 0xd2f0,\n};\nconst std::vector big_steps = {\n 0x0190, 0x021f, 0x02e2, 0x03eb,\n 0x0553, 0x073c, 0x09d5, 0x0d5c,\n 0x1227, 0x18aa, 0x2184, 0x2d8b,\n 0x3de2, 0x5415, 0x7240, 0x9b3d,\n 0xd2f0,\n};\n\nuint16_t next_step(uint16_t val, const vector &steps)\n{\n auto start = 0;\n auto end = steps.size() - 1;\n while (start + 1 < end) {\n auto mid = start + (end - start) / 2;\n if (steps[mid] > val) {\n end = mid;\n } else {\n start = mid;\n }\n }\n return steps[end];\n}\n\nuint16_t prev_step(uint16_t val, const vector &steps)\n{\n auto start = 0;\n auto end = steps.size() - 1;\n while (start + 1 < end) {\n auto mid = start + (end - start) / 2;\n if (steps[mid] >= val) {\n end = mid;\n } else {\n start = mid;\n }\n }\n return steps[start];\n}\n\nuint16_t get_brightness(hid_device *handle) {\n uint8_t data[7] = {0};\n int res = hid_get_feature_report(handle, data, sizeof(data));\n if (res < 0) {\n printf(\"Unable to get a feature report.\\n\");\n printf(\"%ls\", hid_error(handle));\n }\n return data[1] + (data[2] << 8);\n}\n\nvoid set_brightness(hid_device *handle, uint16_t val) {\n uint8_t data[7] = {\n 0x00,\n uint8_t(val & 0x00ff),\n uint8_t((val >> 8) & 0x00ff),\n 0x00, 0x00, 0x00, 0x00};\n int res = hid_send_feature_report(handle, data, sizeof(data));\n if (res < 0) {\n printf(\"Unable to set a feature report.\\n\");\n printf(\"%ls\", hid_error(handle));\n }\n}\n\nint main(int argc, char *argv[]) {\n hid_device *handle;\n struct hid_device_info *devs, *cur_dev;\n\n if (hid_init())\n return -1;\n\n char* ultrafine_monitor_path = NULL;\n\n devs = hid_enumerate(0x0, 0x0);\n cur_dev = devs;\n while (cur_dev) {\n if (cur_dev->vendor_id == 0x043e) //0x043e means LG\n {\n 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);\n printf(\"\\n\");\n printf(\" Manufacturer: %ls\\n\", cur_dev->manufacturer_string);\n printf(\" Product: %ls\\n\", cur_dev->product_string);\n printf(\" Release: %hx\\n\", cur_dev->release_number);\n printf(\" Interface: %d\\n\", cur_dev->interface_number);\n printf(\"\\n\");\n\n if (wcsstr(cur_dev->product_string, L\"BRIGHTNESS\"))\n {\n ultrafine_monitor_path = cur_dev->path;\n break;\n }\n }\n\n cur_dev = cur_dev->next;\n }\n\n if (ultrafine_monitor_path == NULL)\n {\n printf(\"device not found!\");\n exit(-1);\n }\n\n handle = hid_open_path(ultrafine_monitor_path);\n if (!handle) {\n printf(\"unable to open device\\n\");\n return 1;\n }\n\n auto brightness = get_brightness(handle);\n printf(\"Press '-' or '=' to adjust brightness.\\n\");\n printf(\"Press '[' or: ']' to fine tune.\\n\");\n printf(\"Press 'p' to use the minimum brightness\\n\");\n printf(\"Press '\\\\' to use the maximum brightness\\n\");\n printf(\"Press 'q' to quit.\\n\");\n\n while (true) {\n printf(\"Current brightness = %d%4s\\r\", int((float(brightness) / 54000) * 100.0), \" \");\n int c = _getch();\n if (c == 'q') {\n break;\n }\n switch (c) {\n case '+':\n case '=':\n brightness = next_step(brightness, big_steps);\n set_brightness(handle, brightness);\n break;\n case '-':\n case '_':\n brightness = prev_step(brightness, big_steps);\n set_brightness(handle, brightness);\n break;\n case ']':\n brightness = next_step(brightness, small_steps);\n set_brightness(handle, brightness);\n break;\n case '[':\n brightness = prev_step(brightness, small_steps);\n set_brightness(handle, brightness);\n break;\n case '\\\\':\n brightness = max_brightness;\n set_brightness(handle, brightness);\n break;\n case 'p':\n brightness = min_brightness;\n set_brightness(handle, brightness);\n break;\n default:\n break;\n }\n }\n\n hid_close(handle);\n hid_exit();\n return 0;\n}\n"
},
{
"path": "LG-Ultrafine-Brightness.sln",
"content": "\nMicrosoft Visual Studio Solution File, Format Version 12.00\n# Visual Studio 15\nVisualStudioVersion = 15.0.27004.2006\nMinimumVisualStudioVersion = 10.0.40219.1\nProject(\"{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}\") = \"LG-Ultrafine-Brightness\", \"LG-Ultrafine-Brightness\\LG-Ultrafine-Brightness.vcxproj\", \"{4E01F474-D2A4-483F-BC16-141A28EEDB17}\"\nEndProject\nGlobal\n\tGlobalSection(SolutionConfigurationPlatforms) = preSolution\n\t\tDebug|x64 = Debug|x64\n\t\tDebug|x86 = Debug|x86\n\t\tRelease|x64 = Release|x64\n\t\tRelease|x86 = Release|x86\n\tEndGlobalSection\n\tGlobalSection(ProjectConfigurationPlatforms) = postSolution\n\t\t{4E01F474-D2A4-483F-BC16-141A28EEDB17}.Debug|x64.ActiveCfg = Debug|x64\n\t\t{4E01F474-D2A4-483F-BC16-141A28EEDB17}.Debug|x64.Build.0 = Debug|x64\n\t\t{4E01F474-D2A4-483F-BC16-141A28EEDB17}.Debug|x86.ActiveCfg = Debug|Win32\n\t\t{4E01F474-D2A4-483F-BC16-141A28EEDB17}.Debug|x86.Build.0 = Debug|Win32\n\t\t{4E01F474-D2A4-483F-BC16-141A28EEDB17}.Release|x64.ActiveCfg = Release|x64\n\t\t{4E01F474-D2A4-483F-BC16-141A28EEDB17}.Release|x64.Build.0 = Release|x64\n\t\t{4E01F474-D2A4-483F-BC16-141A28EEDB17}.Release|x86.ActiveCfg = Release|Win32\n\t\t{4E01F474-D2A4-483F-BC16-141A28EEDB17}.Release|x86.Build.0 = Release|Win32\n\tEndGlobalSection\n\tGlobalSection(SolutionProperties) = preSolution\n\t\tHideSolutionNode = FALSE\n\tEndGlobalSection\n\tGlobalSection(ExtensibilityGlobals) = postSolution\n\t\tSolutionGuid = {6C29DEE4-E3C8-4F0A-B1A0-D9FEE2CE42F4}\n\tEndGlobalSection\nEndGlobal\n"
},
{
"path": "LICENSE",
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If not, see .\n\nAlso add information on how to contact you by electronic and paper mail.\n\n If the program does terminal interaction, make it output a short\nnotice like this when it starts in an interactive mode:\n\n Copyright (C) \n This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.\n This is free software, and you are welcome to redistribute it\n under certain conditions; type `show c' for details.\n\nThe hypothetical commands `show w' and `show c' should show the appropriate\nparts of the General Public License. Of course, your program's commands\nmight be different; for a GUI interface, you would use an \"about box\".\n\n You should also get your employer (if you work as a programmer) or school,\nif any, to sign a \"copyright disclaimer\" for the program, if necessary.\nFor more information on this, and how to apply and follow the GNU GPL, see\n.\n\n The GNU General Public License does not permit incorporating your program\ninto proprietary programs. If your program is a subroutine library, you\nmay consider it more useful to permit linking proprietary applications with\nthe library. If this is what you want to do, use the GNU Lesser General\nPublic License instead of this License. But first, please read\n.\n"
},
{
"path": "README.md",
"content": "# LG-Ultrafine-Brightness\n\nA tool to adjust brightness of LG Ultrafine 4k/5K on Windows without the help of Bootcamp. I built my own PC and made this tool to adjust brightness through my PC.\n\nThe program sends set feature report to the device to adjust the brightness.\n\nThis project is derived from [https://github.com/unknownzerx/lguf-brightness](https://github.com/unknownzerx/lguf-brightness). \n\nThanks @unknownzerx.\n\nThe original tool was unable to adjust brightness in Windows 10 and I also made some minor improvements to it like showing current brightness and efficiency while adjusting.\n\n### Linux\nPlease go to this repo [https://github.com/velum/lguf-brightness](https://github.com/velum/lguf-brightness).\n\n### Usage\n\n```\nPress '-' or '=' to adjust brightness.\nPress '[' or: ']' to fine tune.\nPress 'p' to use the minimum brightness\nPress '' to use the maximum brightness\nPress 'q' to quit.\n```\n\n### Build\n\n1. Open the `sln` file by Visual Studio.\n2. Select `x64` configuration.\n3. Build!\n\nNote that I put the hidapi.dll in the project and if you don't believe it's secure, you can build a new one (x64) and replace it.\n"
}
]