Files
OpenRGB/Controllers/QMKController/QMKKeychronController/QMKKeychronController.h

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9.4 KiB
C++

/*---------------------------------------------------------*\
| QMKKeychronController.h |
| |
| Driver for Keychron QMK-based keyboards |
| |
| Amadej Kastelic 21 Jun 2026 |
| Adam Honse <calcprogrammer1@gmail.com> 22 Jun 2026 |
| |
| This file is part of the OpenRGB project |
| SPDX-License-Identifier: GPL-2.0-or-later |
\*---------------------------------------------------------*/
#pragma once
#include "RGBController.h"
#include <string>
#include <hidapi.h>
/*---------------------------------------------------------*\
| Keychron vendor ID |
\*---------------------------------------------------------*/
#define KEYCHRON_VID 0x3434
/*---------------------------------------------------------*\
| Product IDs |
\*---------------------------------------------------------*/
#define KEYCHRON_Q1_HE_PID 0x0B10
#define KEYCHRON_Q2_PID 0x0111
/*---------------------------------------------------------*\
| QMK raw HID usage page/usage |
\*---------------------------------------------------------*/
#define KEYCHRON_QMK_USAGE_PAGE 0xFF60
#define KEYCHRON_QMK_USAGE 0x61
/*---------------------------------------------------------*\
| HID packet constants |
\*---------------------------------------------------------*/
#define KEYCHRON_QHE_PACKET_SIZE 32
#define KEYCHRON_QHE_HID_READ_TIMEOUT 1000
/*---------------------------------------------------------*\
| Keychron-specific VIA protocol extension |
\*---------------------------------------------------------*/
enum
{
KC_GET_PROTOCOL_VERSION = 0xA0,
KC_GET_FIRMWARE_VERSION = 0xA1,
KC_GET_SUPPORT_FEATURE = 0xA2,
KC_GET_DEFAULT_LAYER = 0xA3,
KC_MISC_CMD_GROUP = 0xA7,
KC_KEYCHRON_RGB = 0xA8,
KC_ANALOG_MATRIX = 0xA9,
KC_WIRELESS_DFU = 0xAA,
KC_FACTORY_TEST = 0xAB
};
enum KeychronKCRGBCommand
{
KEYCHRON_RGB_PROTOCOL_VER = 0x01,
KEYCHRON_RGB_SAVE = 0x02,
KEYCHRON_RGB_GET_INDICATORS = 0x03,
KEYCHRON_RGB_SET_INDICATORS = 0x04,
KEYCHRON_RGB_LED_COUNT = 0x05,
KEYCHRON_RGB_LED_IDX = 0x06,
KEYCHRON_RGB_PER_KEY_GET_TYPE = 0x07,
KEYCHRON_RGB_PER_KEY_SET_TYPE = 0x08,
KEYCHRON_RGB_PER_KEY_GET_COLOR = 0x09,
KEYCHRON_RGB_PER_KEY_SET_COLOR = 0x0A,
KEYCHRON_RGB_MIXED_GET_INFO = 0x0B,
KEYCHRON_RGB_MIXED_GET_REGIONS = 0x0C,
KEYCHRON_RGB_MIXED_SET_REGIONS = 0x0D,
KEYCHRON_RGB_MIXED_GET_EFFECTS = 0x0E,
KEYCHRON_RGB_MIXED_SET_EFFECTS = 0x0F,
};
enum
{
KC_FEATURE_DEFAULT_LAYER = ( 1 << 0 ),
KC_FEATURE_BLUETOOTH = ( 1 << 1 ),
KC_FEATURE_P24G = ( 1 << 2 ),
KC_FEATURE_ANALOG_MATRIX = ( 1 << 3 ),
KC_FEATURE_STATE_NOTIFY = ( 1 << 4 ),
KC_FEATURE_DYNAMIC_DEBOUNCE = ( 1 << 5 ),
KC_FEATURE_SNAP_CLICK = ( 1 << 6 ),
KC_FEATURE_KEYCHRON_RGB = ( 1 << 7 ),
KC_FEATURE_QUICK_START = ( 1 << 8 ),
KC_FEATURE_NKRO = ( 1 << 9 ),
};
/*---------------------------------------------------------*\
| Per-key RGB animation types (PER_KEY_RGB_SET_TYPE value) |
\*---------------------------------------------------------*/
enum KeychronPerKeyRgbType
{
KEYCHRON_PER_KEY_RGB_SOLID = 0,
KEYCHRON_PER_KEY_RGB_BREATHING = 1,
KEYCHRON_PER_KEY_RGB_REACTIVE_SIMPLE = 2,
KEYCHRON_PER_KEY_RGB_REACTIVE_WIDE = 3,
KEYCHRON_PER_KEY_RGB_REACTIVE_SPLASH = 4,
};
/*---------------------------------------------------------*\
| VIA backlight value IDs |
\*---------------------------------------------------------*/
#define KEYCHRON_VIA_BACKLIGHT_TYPE_RGB_MATRIX 0x03
enum KeychronVIABacklightValueID
{
KEYCHRON_VIA_BACKLIGHT_BRIGHTNESS = 0x01,
KEYCHRON_VIA_BACKLIGHT_EFFECT = 0x02,
KEYCHRON_VIA_BACKLIGHT_SPEED = 0x03,
KEYCHRON_VIA_BACKLIGHT_COLOR = 0x04,
};
/*---------------------------------------------------------*\
| Q1 HE effect IDs |
| |
| Determined by the number of standard effects enabled |
| in the Q1 HE firmware (info.json animations) + |
| 2 custom effects (PER_KEY_RGB, MIXED_RGB). |
| May need adjustment for other firmware versions. |
\*---------------------------------------------------------*/
#define KEYCHRON_QHE_PER_KEY_RGB_EFFECT 23
/*---------------------------------------------------------*\
| Brightness and speed ranges |
\*---------------------------------------------------------*/
#define KEYCHRON_QHE_MIN_BRIGHTNESS 0x00
#define KEYCHRON_QHE_MAX_BRIGHTNESS 0xFF
#define KEYCHRON_QHE_MIN_SPEED 0x00
#define KEYCHRON_QHE_MAX_SPEED 0xFF
typedef struct
{
bool valid;
unsigned char row;
unsigned char col;
} kc_led_info;
class QMKKeychronController
{
public:
QMKKeychronController(hid_device* dev_handle, const char *path);
~QMKKeychronController();
std::string GetLocation();
std::string GetName();
std::string GetSerial();
std::string GetVendor();
std::string GetVersion();
bool GetSupported();
unsigned short GetKeycode(unsigned short led_index);
unsigned short GetLEDCount();
kc_led_info GetLEDInfo(unsigned short led_index);
void SendLEDs(unsigned short number_leds, RGBColor* color_data);
void SetMode(unsigned short mode, unsigned char speed, unsigned char hue, unsigned char sat, unsigned char val);
void SaveMode();
private:
hid_device* dev;
unsigned char kc_protocol_version;
unsigned short kc_rgb_protocol_version;
std::vector<unsigned short> keycodes;
std::vector<kc_led_info> led_info;
std::string location;
std::string name;
unsigned short number_leds;
std::string serial;
unsigned short supported_features;
std::string vendor;
unsigned short via_protocol_version;
unsigned short CmdGetKeycode(unsigned char layer, unsigned char row, unsigned char col);
void CmdGetKeychronProtocolVersion(unsigned char* kc_protocol_version);
void CmdGetKeychronRGBProtocolVersion(unsigned short* kc_rgb_protocol_version);
std::vector<unsigned char> CmdGetLEDIndexByRow(unsigned char row);
void CmdGetNumberLEDs(unsigned short* number_leds);
void CmdGetSupportFeature(unsigned short* supported_features);
void CmdGetViaProtocolVersion(unsigned short* via_protocol_version);
void CmdSaveMode();
void CmdSendLEDs(unsigned char start_index, unsigned char number_leds, RGBColor* color_data);
void CmdSetBrightness(unsigned char brightness);
void CmdSetColorHS(unsigned char h, unsigned char s);
void CmdSetPerKeyRGBType(unsigned char type);
void CmdSetRGBMatrixMode(unsigned char mode);
void CmdSetSpeed(unsigned char speed);
int ViaSendCommand
(
unsigned char cmd,
unsigned char* data_in,
unsigned char data_in_size,
unsigned char* data_out,
unsigned char data_out_size
);
int ViaSendCommandSub
(
unsigned char cmd,
unsigned char subcmd,
unsigned char* data_in,
unsigned char data_in_size,
unsigned char* data_out,
unsigned char data_out_size
);
};