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Diffstat (limited to 'hid/arduino/src/proto.h')
| -rw-r--r-- | hid/arduino/src/proto.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/hid/arduino/src/proto.h b/hid/arduino/src/proto.h new file mode 100644 index 00000000..5fbdd49c --- /dev/null +++ b/hid/arduino/src/proto.h @@ -0,0 +1,142 @@ +/***************************************************************************** +# # +# KVMD - The main PiKVM daemon. # +# # +# Copyright (C) 2018-2023 Maxim Devaev <[email protected]> # +# # +# This program is free software: you can redistribute it and/or modify # +# it under the terms of the GNU General Public License as published by # +# the Free Software Foundation, either version 3 of the License, or # +# (at your option) any later version. # +# # +# This program is distributed in the hope that it will be useful, # +# but WITHOUT ANY WARRANTY; without even the implied warranty of # +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # +# GNU General Public License for more details. # +# # +# You should have received a copy of the GNU General Public License # +# along with this program. If not, see <https://www.gnu.org/licenses/>. # +# # +*****************************************************************************/ + + +#pragma once + + +namespace PROTO { + const uint8_t MAGIC = 0x33; + const uint8_t MAGIC_RESP = 0x34; + + namespace RESP { // Plain responses + // const uint8_t OK = 0x20; // Legacy + const uint8_t NONE = 0x24; + const uint8_t CRC_ERROR = 0x40; + const uint8_t INVALID_ERROR = 0x45; + const uint8_t TIMEOUT_ERROR = 0x48; + }; + + namespace PONG { // Complex response + const uint8_t OK = 0x80; + const uint8_t CAPS = 0b00000001; + const uint8_t SCROLL = 0b00000010; + const uint8_t NUM = 0b00000100; + const uint8_t KEYBOARD_OFFLINE = 0b00001000; + const uint8_t MOUSE_OFFLINE = 0b00010000; + const uint8_t RESET_REQUIRED = 0b01000000; + }; + + namespace OUTPUTS1 { // Complex request/responce flags + const uint8_t DYNAMIC = 0b10000000; + namespace KEYBOARD { + const uint8_t MASK = 0b00000111; + const uint8_t USB = 0b00000001; + const uint8_t PS2 = 0b00000011; + }; + namespace MOUSE { + const uint8_t MASK = 0b00111000; + const uint8_t USB_ABS = 0b00001000; + const uint8_t USB_REL = 0b00010000; + const uint8_t PS2 = 0b00011000; + const uint8_t USB_WIN98 = 0b00100000; + }; + }; + + namespace OUTPUTS2 { // Complex response + const uint8_t CONNECTABLE = 0b10000000; + const uint8_t CONNECTED = 0b01000000; + const uint8_t HAS_USB = 0b00000001; + const uint8_t HAS_PS2 = 0b00000010; + const uint8_t HAS_USB_WIN98 = 0b00000100; + } + + namespace CMD { + const uint8_t PING = 0x01; + const uint8_t REPEAT = 0x02; + const uint8_t SET_KEYBOARD = 0x03; + const uint8_t SET_MOUSE = 0x04; + const uint8_t SET_CONNECTED = 0x05; + const uint8_t CLEAR_HID = 0x10; + + namespace KEYBOARD { + const uint8_t KEY = 0x11; + }; + + namespace MOUSE { + const uint8_t MOVE = 0x12; + const uint8_t BUTTON = 0x13; + const uint8_t WHEEL = 0x14; + const uint8_t RELATIVE = 0x15; + namespace LEFT { + const uint8_t SELECT = 0b10000000; + const uint8_t STATE = 0b00001000; + }; + namespace RIGHT { + const uint8_t SELECT = 0b01000000; + const uint8_t STATE = 0b00000100; + }; + namespace MIDDLE { + const uint8_t SELECT = 0b00100000; + const uint8_t STATE = 0b00000010; + }; + namespace EXTRA_UP { + const uint8_t SELECT = 0b10000000; + const uint8_t STATE = 0b00001000; + }; + namespace EXTRA_DOWN { + const uint8_t SELECT = 0b01000000; + const uint8_t STATE = 0b00000100; + }; + }; + }; + + uint16_t crc16(const uint8_t *buffer, unsigned length) { + const uint16_t polinom = 0xA001; + uint16_t crc = 0xFFFF; + + for (unsigned byte_count = 0; byte_count < length; ++byte_count) { + crc = crc ^ buffer[byte_count]; + for (unsigned bit_count = 0; bit_count < 8; ++bit_count) { + if ((crc & 0x0001) == 0) { + crc = crc >> 1; + } else { + crc = crc >> 1; + crc = crc ^ polinom; + } + } + } + return crc; + } + + inline int merge8_int(uint8_t from_a, uint8_t from_b) { + return (((int)from_a << 8) | (int)from_b); + } + + inline uint16_t merge8(uint8_t from_a, uint8_t from_b) { + return (((uint16_t)from_a << 8) | (uint16_t)from_b); + } + + inline void split16(uint16_t from, uint8_t *to_a, uint8_t *to_b) { + *to_a = (uint8_t)(from >> 8); + *to_b = (uint8_t)(from & 0xFF); + } +}; |