Initial commit: CCU621_M firmware project with BLE debug link support.

Co-authored-by: Cursor <cursoragent@cursor.com>

BSP/net_lwip/enet_PHY.h

@@ -0,0 +1,47 @@
+/*!
+    \file    gd32h7xx_enet_eval.h
+    \brief   the header file of gd32h7xx_enet_eval 
+    
+    \version 2025-02-19, V2.1.0, demo for GD32H7xx
+*/
+
+/*
+    Copyright (c) 2024, GigaDevice Semiconductor Inc.
+
+    Redistribution and use in source and binary forms, with or without modification, 
+are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice, this 
+       list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright notice, 
+       this list of conditions and the following disclaimer in the documentation 
+       and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holder nor the names of its contributors 
+       may be used to endorse or promote products derived from this software without 
+       specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
+IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
+OF SUCH DAMAGE.
+*/
+
+#ifndef GD32H7xx_ENET_EVAL_H
+#define GD32H7xx_ENET_EVAL_H
+
+#include <stdint.h>
+#include "netif.h"
+
+/* function declarations */
+/* setup ethernet system(GPIOs, clocks, MAC, DMA, systick) */
+void enet_system_setup(void);
+/* 非 0 表示 MAC/PHY 初始化成功，可安全启用 lwIP 与 ENET 中断 */
+uint8_t enet_hw_is_ready(void);
+
+#endif /* GD32H7xx_ENET_EVAL_H */