UA1ZBE Custom Firmware v1.0

Features:
- VFO mode with direct frequency input
- POCSAG decoder (512/1200 baud) with BCH(31,21) correction
- Full-screen Spectrum analyzer
- FM Radio receiver
- RSSI signal indicator overlay
- Custom boot splash (UA1ZBE / POCSAG pager / build date)

Architecture:
- app/mode.c — mode dispatcher (VFO/POCSAG/Spectrum/FM)
- app/boot_splash.c — 2-second boot splash
- app/pocsag/ — POCSAG decoder + BCH correction
- app/display_rssi.c — RSSI indicator
- main.c — entry point with custom init
- syscalls.c — bare-metal _sbrk stub

Build: arm-none-eabi-gcc -Os -flto -Wall -Werror -Wextra
Size: 57.9KB Flash / 3.6KB RAM

Controls:
- 0-9: Direct frequency input (VFO)
- SK2: POCSAG mode
- SK1: Spectrum analyzer
- 0: FM Radio
- EXIT: Return to VFO
- F/*: Toggle 512/1200 baud (in POCSAG)

external/CMSIS_5/CMSIS/DAP/Firmware/Examples/LPC-Link2/osObjects.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2013-2017 ARM Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ----------------------------------------------------------------------
+ *
+ * $Date:        11. June 2021
+ * $Revision:    V2.0.0
+ *
+ * Project:      CMSIS-DAP Examples LPC-Link2
+ * Title:        osObjects.h CMSIS-DAP RTOS2 Objects for LPC-Link2
+ *
+ *---------------------------------------------------------------------------*/
+
+#ifndef __osObjects_h__
+#define __osObjects_h__
+
+#include "cmsis_os2.h"
+
+#ifdef osObjectsExternal
+extern osThreadId_t DAP_ThreadId;
+extern osThreadId_t SWO_ThreadId;
+#else
+static const osThreadAttr_t DAP_ThreadAttr = {
+  .priority = osPriorityNormal
+};
+static const osThreadAttr_t SWO_ThreadAttr = {
+  .priority = osPriorityAboveNormal
+};
+extern osThreadId_t DAP_ThreadId;
+       osThreadId_t DAP_ThreadId;
+extern osThreadId_t SWO_ThreadId;
+       osThreadId_t SWO_ThreadId;
+#endif
+
+extern void DAP_Thread (void *argument);
+extern void SWO_Thread (void *argument);
+
+extern void app_main (void *argument);
+
+#endif  /* __osObjects_h__ */