adds abstraction for connection (#111)

1 files changed, 66 insertions, 0 deletions

diff --git a/hid/lib/drivers/serial.h b/hid/lib/drivers/serial.h
new file mode 100644
index 00000000..d88c8fb4
--- /dev/null
+++ b/hid/lib/drivers/serial.h
@@ -0,0 +1,66 @@
+/*****************************************************************************
+#                                                                            #
+#    KVMD - The main PiKVM daemon.                                           #
+#                                                                            #
+#    Copyright (C) 2018-2022  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
+#ifdef CMD_SERIAL
+#include "connection.h"
+
+namespace DRIVERS {
+#ifdef Serial
+#undef Serial
+#endif
+	struct Serial : public Connection {
+		Serial() : Connection(CONNECTION) {}
+
+		void begin() override {
+			CMD_SERIAL.begin(CMD_SERIAL_SPEED);
+		}
+
+		void periodic() override {
+			if (CMD_SERIAL.available() > 0) {
+				_buffer[_index] = (uint8_t)CMD_SERIAL.read();
+				if (_index == 7) {
+					_data_cb(_buffer, 8);
+					_index = 0;
+				} else {
+					_last = micros();
+					++_index;
+				}
+			} else if (_index > 0) {
+				if (is_micros_timed_out(_last, CMD_SERIAL_TIMEOUT)) {
+					_timeout_cb();
+					_index = 0;
+				}
+			}
+		}
+
+		void write(const uint8_t *data, size_t size) override {
+			CMD_SERIAL.write(data, size);
+		}
+
+		private:
+			unsigned long _last = 0;
+			uint8_t _index = 0;
+			uint8_t _buffer[8];
+	};
+}
+#endif