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/RTOS2/RTX/Examples_IAR/MsgQueue/Abstract.txt

@@ -0,0 +1,16 @@
+The MsgQueue project is a simple RTX Kernel based example
+for a simulated Cortex-M3 device
+
+Example functionality:
+ - Clock Settings:
+   - XTAL    =  12 MHz
+   - Core    =  12 MHz
+
+The simple RTX Kernel based example shows how to use a 
+message queue to send data from one thread to another.
+The message receiver thread prints the message contents
+to the debug output window.
+
+The MsgQueue example program is available for one target:
+
+  Simulation:          configured for a simulated on-chip Flash

external/CMSIS_5/CMSIS/RTOS2/RTX/Examples_IAR/MsgQueue/MsgQueue/settings/MsgQueue.crun

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<crun>
+    <version>1</version>
+    <filter_entries>
+        <filter index="0" type="default">
+            <type>*</type>
+            <start_file>*</start_file>
+            <end_file>*</end_file>
+            <action_debugger>0</action_debugger>
+            <action_log>1</action_log>
+        </filter>
+    </filter_entries>
+</crun>

external/CMSIS_5/CMSIS/RTOS2/RTX/Examples_IAR/MsgQueue/MsgQueue/settings/MsgQueue.dnx

@@ -0,0 +1,100 @@
+<?xml version="1.0"?>
+<settings>
+    <Stack>
+        <FillEnabled>0</FillEnabled>
+        <OverflowWarningsEnabled>1</OverflowWarningsEnabled>
+        <WarningThreshold>90</WarningThreshold>
+        <SpWarningsEnabled>1</SpWarningsEnabled>
+        <WarnLogOnly>1</WarnLogOnly>
+        <UseTrigger>1</UseTrigger>
+        <TriggerName>main</TriggerName>
+        <LimitSize>0</LimitSize>
+        <ByteLimit>50</ByteLimit>
+    </Stack>
+    <Trace1>
+        <Enabled>0</Enabled>
+        <ShowSource>1</ShowSource>
+    </Trace1>
+    <DebugChecksum>
+        <Checksum>2135918346</Checksum>
+    </DebugChecksum>
+    <Disassembly>
+        <InstrCount>0</InstrCount>
+        <MixedMode>1</MixedMode>
+    </Disassembly>
+    <CodeCoverage>
+        <Enabled>0</Enabled>
+        <ShowSource>0</ShowSource>
+        <HideCovered>0</HideCovered>
+    </CodeCoverage>
+    <Exceptions>
+        <StopOnUncaught>_ 0</StopOnUncaught>
+        <StopOnThrow>_ 0</StopOnThrow>
+    </Exceptions>
+    <CallStack>
+        <ShowArgs>0</ShowArgs>
+    </CallStack>
+    <DriverProfiling>
+        <Enabled>0</Enabled>
+        <Mode>1</Mode>
+        <Graph>0</Graph>
+        <Symbiont>0</Symbiont>
+    </DriverProfiling>
+    <CallStackLog>
+        <Enabled>0</Enabled>
+    </CallStackLog>
+    <CallStackStripe>
+        <ShowTiming>1</ShowTiming>
+    </CallStackStripe>
+    <TermIOLog>
+        <LoggingEnabled>_ 0</LoggingEnabled>
+        <LogFile>_ ""</LogFile>
+    </TermIOLog>
+    <LogFile>
+        <LoggingEnabled>_ 0</LoggingEnabled>
+        <LogFile>_ ""</LogFile>
+        <Category>_ 0</Category>
+    </LogFile>
+    <InterruptLog>
+        <LogEnabled>0</LogEnabled>
+        <GraphEnabled>0</GraphEnabled>
+        <ShowTimeLog>1</ShowTimeLog>
+        <SumEnabled>0</SumEnabled>
+        <ShowTimeSum>1</ShowTimeSum>
+        <SumSortOrder>0</SumSortOrder>
+    </InterruptLog>
+    <DataLog>
+        <LogEnabled>0</LogEnabled>
+        <GraphEnabled>0</GraphEnabled>
+        <ShowTimeLog>1</ShowTimeLog>
+        <SumEnabled>0</SumEnabled>
+        <ShowTimeSum>1</ShowTimeSum>
+    </DataLog>
+    <DisassembleMode>
+        <mode>0</mode>
+    </DisassembleMode>
+    <Breakpoints2>
+        <Count>0</Count>
+    </Breakpoints2>
+    <Interrupts>
+        <Enabled>1</Enabled>
+        <Irq0>_ 0 400000 0 10000 0 0 100 100 0 1 "SysTick 1 0x3C"</Irq0>
+        <Count>1</Count>
+    </Interrupts>
+    <MemConfig>
+        <Base>1</Base>
+        <Manual>0</Manual>
+        <Ddf>1</Ddf>
+        <TypeViol>0</TypeViol>
+        <Stop>1</Stop>
+    </MemConfig>
+    <Aliases>
+        <Count>0</Count>
+        <SuppressDialog>0</SuppressDialog>
+    </Aliases>
+    <Simulator>
+        <Freq>10000000</Freq>
+        <FreqHi>0</FreqHi>
+        <MultiCoreRunAll>1</MultiCoreRunAll>
+    </Simulator>
+</settings>

external/CMSIS_5/CMSIS/RTOS2/RTX/Examples_IAR/MsgQueue/main.c

@@ -0,0 +1,120 @@
+/* -------------------------------------------------------------------------- 
+ * Copyright (c) 2013-2019 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.
+ *
+ *      Name:    main.c
+ *      Purpose: RTX example program
+ *
+ *---------------------------------------------------------------------------*/
+
+#include <stdio.h>
+
+#include "RTE_Components.h"
+#include  CMSIS_device_header
+#include "cmsis_os2.h"
+
+void app_main (void *argument);
+void app_msg (void *argument);
+
+typedef struct msg_s {
+  uint8_t cmd;
+  uint8_t len;
+  uint8_t data[8];
+} msg_t;
+
+static osMessageQueueId_t msgQueue;
+
+static const osThreadAttr_t msgAttr = {
+  .stack_size = 400U
+};
+
+/*----------------------------------------------------------------------------
+ * Application main thread
+ *---------------------------------------------------------------------------*/
+
+void app_main (void *argument) {
+  (void)argument;
+
+  osStatus_t status;
+  uint32_t cnt = 0UL;
+  msg_t msg = {
+    .cmd = 1U,
+    .len = 4U,
+    .data = { 0U }
+  };
+
+  while (1) {
+    // Produce a new message and put it to the queue
+    ++cnt;
+    *((uint32_t*)msg.data) = cnt;
+    status = osMessageQueuePut(msgQueue, &msg, 0U, osWaitForever);
+    if (status != osOK) {
+      printf("app_main: osMessageQueuePut failed.\n");
+    }
+
+    // Defer message creation
+    osDelay(osMessageQueueGetCount(msgQueue)*100U);
+  }
+}
+
+/*----------------------------------------------------------------------------
+ * Application message receiver thread
+ *---------------------------------------------------------------------------*/
+
+void app_msg (void *argument) {
+  (void)argument;
+
+  osStatus_t status;
+  uint32_t cnt;
+  msg_t msg;
+
+  while (1) {
+    // Defer message processing
+    osDelay(osMessageQueueGetSpace(msgQueue)*100U);
+
+    // Wait forever until a message could be received
+    status = osMessageQueueGet(msgQueue, &msg, NULL, osWaitForever);
+    if (status != osOK) {
+      printf("app_msg: osMessageQueueGet failed.\n");
+    } else {
+      if (msg.len == 4U) {
+        cnt = *((uint32_t*)msg.data);
+      }
+      printf("app_msg: received [cmd = %d, data = 0x%0X]\n", msg.cmd, cnt);
+    }
+  }
+}
+
+/*----------------------------------------------------------------------------
+ * Main entry
+ *---------------------------------------------------------------------------*/
+
+int main (void) {
+
+  // System Initialization
+  SystemCoreClockUpdate();
+
+  osKernelInitialize();                 // Initialize CMSIS-RTOS
+
+  osThreadNew(app_main, NULL, NULL);    // Create application main thread
+  osThreadNew(app_msg, NULL, &msgAttr); // Create message receiver thread
+
+  // Create message queue for up to 10 messages of type msg_t
+  msgQueue = osMessageQueueNew(10, sizeof(msg_t), NULL);
+  
+  osKernelStart();                      // Start thread execution
+  for (;;) {}
+}