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)
112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
/*
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* Copyright (c) 2013-2021 Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an AS IS BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* -----------------------------------------------------------------------------
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*
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* Project: CMSIS-RTOS RTX
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* Title: Delay functions
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*
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* -----------------------------------------------------------------------------
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*/
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#include "rtx_lib.h"
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// ==== Service Calls ====
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/// Wait for Timeout (Time Delay).
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/// \note API identical to osDelay
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static osStatus_t svcRtxDelay (uint32_t ticks) {
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osStatus_t status;
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if (ticks == 0U) {
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EvrRtxDelayError((int32_t)osErrorParameter);
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//lint -e{904} "Return statement before end of function" [MISRA Note 1]
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return osErrorParameter;
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}
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if (osRtxThreadWaitEnter(osRtxThreadWaitingDelay, ticks)) {
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EvrRtxDelayStarted(ticks);
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status = osOK;
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} else {
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EvrRtxDelayError((int32_t)osError);
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status = osError;
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}
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return status;
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}
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/// Wait until specified time.
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/// \note API identical to osDelayUntil
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static osStatus_t svcRtxDelayUntil (uint32_t ticks) {
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osStatus_t status;
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ticks -= osRtxInfo.kernel.tick;
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if ((ticks == 0U) || (ticks > 0x7FFFFFFFU)) {
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EvrRtxDelayError((int32_t)osErrorParameter);
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//lint -e{904} "Return statement before end of function" [MISRA Note 1]
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return osErrorParameter;
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}
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if (osRtxThreadWaitEnter(osRtxThreadWaitingDelay, ticks)) {
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EvrRtxDelayUntilStarted(ticks);
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status = osOK;
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} else {
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EvrRtxDelayError((int32_t)osError);
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status = osError;
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}
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return status;
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}
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// Service Calls definitions
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//lint ++flb "Library Begin" [MISRA Note 11]
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SVC0_1(Delay, osStatus_t, uint32_t)
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SVC0_1(DelayUntil, osStatus_t, uint32_t)
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//lint --flb "Library End"
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// ==== Public API ====
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/// Wait for Timeout (Time Delay).
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osStatus_t osDelay (uint32_t ticks) {
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osStatus_t status;
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EvrRtxDelay(ticks);
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if (IsException() || IsIrqMasked()) {
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EvrRtxDelayError((int32_t)osErrorISR);
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status = osErrorISR;
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} else {
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status = __svcDelay(ticks);
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}
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return status;
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}
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/// Wait until specified time.
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osStatus_t osDelayUntil (uint32_t ticks) {
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osStatus_t status;
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EvrRtxDelayUntil(ticks);
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if (IsException() || IsIrqMasked()) {
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EvrRtxDelayError((int32_t)osErrorISR);
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status = osErrorISR;
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} else {
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status = __svcDelayUntil(ticks);
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}
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return status;
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}
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