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)
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/* Copyright 2023 Dual Tachyon
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* https://github.com/DualTachyon
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* Copyright 2023 Manuel Jedinger
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* https://github.com/manujedi
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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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#include <stdint.h>
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#include <string.h>
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extern uint32_t __bss_start__[];
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extern uint32_t __bss_end__[];
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extern uint8_t flash_data_start[];
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extern uint8_t sram_data_start[];
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extern uint8_t sram_data_end[];
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void BSS_Init(void);
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void DATA_Init(void);
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void BSS_Init(void)
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{
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for (uint32_t *pBss = __bss_start__; pBss < __bss_end__; pBss++) {
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*pBss = 0;
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}
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}
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void DATA_Init(void)
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{
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volatile uint32_t *pDataRam = (volatile uint32_t *)sram_data_start;
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volatile uint32_t *pDataFlash = (volatile uint32_t *)flash_data_start;
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uint32_t Size = (uint32_t)sram_data_end - (uint32_t)sram_data_start;
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for (unsigned int i = 0; i < (Size / 4); i++) {
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*pDataRam++ = *pDataFlash++;
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}
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}
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