initial refactor (not compilable or tested yet...);

fw/src/kfd-avr/.gitignore

@@ -0,0 +1 @@
+build/

fw/src/kfd-avr/.vscode/arduino.json

@@ -0,0 +1,6 @@
+{
+    "sketch": "kfd-avr.ino",
+    "board": "arduino:avr:uno",
+    "port": "COM12",
+    "output": "build"
+}

fw/src/kfd-avr/ControlOpCodes.h

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+/**
+* KFDTool - KFD-AVR
+* GPLv2 Open Source. Use is subject to license terms.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* @package KFDTool / KFD-AVR Firmware
+*
+*/
+//
+// Based on code from the KFDtool project. (https://github.com/KFDtool/KFDtool)
+// Licensed under the MIT License (https://opensource.org/licenses/MIT)
+//
+/*
+*   Copyright (C) 2021-2022 Nat Moore
+*   Copyright (C) 2022 Bryan Biedenkapp N2PLL
+*
+*   Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
+*   and associated documentation files (the "Software"), to deal in the Software without restriction, 
+*   including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
+*   and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, 
+*   subject to the following conditions:
+*
+*   The above copyright notice and this permission notice shall be included in all copies or substantial 
+*   portions of the Software.
+*
+*   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT 
+*   LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 
+*   NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 
+*   IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE 
+*   OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+#if !defined(__CONTROL_OPCODES_H__)
+#define __CONTROL_OPCODES_H__
+
+// ---------------------------------------------------------------------------
+//  Constants
+// ---------------------------------------------------------------------------
+
+/*
+** Command Opcodes
+*/
+#define CMD_READ                    0x11U
+#define CMD_WRITE_INFO              0x12U
+#define CMD_ENTER_BSL_MODE          0x13U
+#define CMD_RESET                   0x14U
+#define CMD_SELF_TEST               0x15U
+#define CMD_SEND_KEY_SIG            0x16U
+#define CMD_SEND_BYTE               0x17U
+
+/*
+** Response Opcodes
+*/
+#define RSP_ERROR                   0x20U
+#define RSP_READ                    0x21U
+#define RSP_WRITE_INFO              0x22U
+#define RSP_ENTER_BSL_MODE          0x23U
+#define RSP_RESET                   0x24U
+#define RSP_SELF_TEST               0x25U
+#define RSP_SEND_KEY_SIG            0x26U
+#define RSP_SEND_BYTE               0x27U
+
+/* 
+** Broadcast Opcodes
+*/
+#define BCST_RECEIVE_BYTE           0x31U
+
+/*
+** Read Opcodes
+*/
+#define READ_AP_VER                 0x01U
+#define READ_FW_VER                 0x02U
+#define READ_UNIQUE_ID              0x03U
+#define READ_MODEL_ID               0x04U
+#define READ_HW_REV                 0x05U
+#define READ_SER_NUM                0x06U
+
+/*
+** Write Opcodes
+*/
+#define WRITE_MDL_REV               0x01U
+#define WRITE_SER                   0x02U
+
+/*
+** Error Opcodes
+*/
+#define ERR_OTHER                   0x00U
+#define ERR_INVALID_CMD_LENGTH      0x01U
+#define ERR_INVALID_CMD_OPCODE      0x02U
+#define ERR_INVALID_READ_OPCODE     0x03U
+#define ERR_READ_FAILED             0x04U
+#define ERR_INVALID_WRITE_OPCODE    0x05U
+#define ERR_WRITE_FAILED            0x06U
+
+#endif // __CONTROL_OPCODES_H__