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)
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
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#include "cmsis_os.h" // CMSIS RTOS header file
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/*----------------------------------------------------------------------------
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* Semaphore creation & usage
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*---------------------------------------------------------------------------*/
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void Thread_Semaphore (void const *argument); // thread function
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osThreadId tid_Thread_Semaphore; // thread id
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osThreadDef (Thread_Semaphore, osPriorityNormal, 1, 0); // thread object
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osSemaphoreId sid_Thread_Semaphore; // semaphore id
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osSemaphoreDef (SampleSemaphore); // semaphore object
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int Init_Semaphore (void) {
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sid_Thread_Semaphore = osSemaphoreCreate (osSemaphore(SampleSemaphore), 1);
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if (!sid_Thread_Semaphore) {
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; // Semaphore object not created, handle failure
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}
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tid_Thread_Semaphore = osThreadCreate (osThread(Thread_Semaphore), NULL);
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if (!tid_Thread_Semaphore) return(-1);
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return(0);
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}
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void Thread_Semaphore (void const *argument) {
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int32_t val;
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while (1) {
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; // Insert thread code here...
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val = osSemaphoreWait (sid_Thread_Semaphore, 10); // wait 10 mSec
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switch (val) {
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case osOK:
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; // Use protected code here...
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osSemaphoreRelease (sid_Thread_Semaphore); // Return a token back to a semaphore
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break;
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case osErrorResource:
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break;
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case osErrorParameter:
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break;
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default:
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break;
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}
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osThreadYield (); // suspend thread
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}
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}
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