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)
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/* Copyright 2023 Dual Tachyon
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* https://github.com/DualTachyon
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may 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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* http://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,
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* WITHOUT 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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#ifndef APP_FM_H
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#define APP_FM_H
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#ifdef ENABLE_FMRADIO
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#include "driver/keyboard.h"
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#define FM_CHANNEL_UP 0x01
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#define FM_CHANNEL_DOWN 0xFF
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enum {
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FM_SCAN_OFF = 0U,
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};
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extern uint16_t gFM_Channels[20];
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extern bool gFmRadioMode;
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extern uint8_t gFmRadioCountdown_500ms;
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extern volatile uint16_t gFmPlayCountdown_10ms;
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extern volatile int8_t gFM_ScanState;
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extern bool gFM_AutoScan;
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extern uint8_t gFM_ChannelPosition;
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// Doubts about whether this should be signed or not
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extern uint16_t gFM_FrequencyDeviation;
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extern bool gFM_FoundFrequency;
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extern uint16_t gFM_RestoreCountdown_10ms;
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bool FM_CheckValidChannel(uint8_t Channel);
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// returns first valid channel starting at Channel
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uint8_t FM_FindNextChannel(uint8_t Channel, uint8_t Direction);
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int FM_ConfigureChannelState(void);
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void FM_TurnOff(void);
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void FM_EraseChannels(void);
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void FM_Tune(uint16_t Frequency, int8_t Step, bool bFlag);
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void FM_PlayAndUpdate(void);
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int FM_CheckFrequencyLock(uint16_t Frequency, uint16_t LowerLimit);
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void FM_ProcessKeys(KEY_Code_t Key, bool bKeyPressed, bool bKeyHeld);
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void FM_Play(void);
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void FM_Start(void);
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#endif
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#endif
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