ua1zbe
a1206d6fd4
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)
39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
/* Copyright (c) 2012 mbed.org */
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#ifndef SEMAPHORE_H
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#define SEMAPHORE_H
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#include <stdint.h>
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#include "cmsis_os.h"
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namespace rtos {
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/*! The Semaphore class is used to manage and protect access to a set of shared resources. */
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class Semaphore {
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public:
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/*! Create and Initialize a Semaphore object used for managing resources.
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\param number of available resources; maximum index value is (count-1).
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*/
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Semaphore(int32_t count);
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/*! Wait until a Semaphore resource becomes available.
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\param millisec timeout value or 0 in case of no time-out. (default: osWaitForever).
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\return number of available tokens, or -1 in case of incorrect parameters
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*/
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int32_t wait(uint32_t millisec=osWaitForever);
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/*! Release a Semaphore resource that was obtain with Semaphore::wait.
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\return status code that indicates the execution status of the function.
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*/
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osStatus release(void);
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private:
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osSemaphoreId _osSemaphoreId;
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osSemaphoreDef_t _osSemaphoreDef;
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#ifdef CMSIS_OS_RTX
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uint32_t _semaphore_data[2];
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#endif
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};
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}
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#endif
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