UA1ZBE Custom Firmware v1.0
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)
This commit is contained in:
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driver/bk1080.c
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144
driver/bk1080.c
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/* 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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#include "bsp/dp32g030/gpio.h"
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#include "bk1080.h"
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#include "driver/gpio.h"
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#include "driver/i2c.h"
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#include "driver/system.h"
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#include "misc.h"
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#ifndef ARRAY_SIZE
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
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#endif
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static const uint16_t BK1080_RegisterTable[] =
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{
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0x0008, 0x1080, 0x0201, 0x0000, 0x40C0, 0x0A1F, 0x002E, 0x02FF,
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0x5B11, 0x0000, 0x411E, 0x0000, 0xCE00, 0x0000, 0x0000, 0x1000,
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0x3197, 0x0000, 0x13FF, 0x9852, 0x0000, 0x0000, 0x0008, 0x0000,
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0x51E1, 0xA8BC, 0x2645, 0x00E4, 0x1CD8, 0x3A50, 0xEAE0, 0x3000,
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0x0200, 0x0000,
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};
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static bool gIsInitBK1080;
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uint16_t BK1080_BaseFrequency;
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uint16_t BK1080_FrequencyDeviation;
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void BK1080_Init0(void)
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{
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BK1080_Init(0,0/*,0*/);
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}
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void BK1080_Init(uint16_t freq, uint8_t band/*, uint8_t space*/)
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{
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unsigned int i;
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if (freq) {
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GPIO_ClearBit(&GPIOB->DATA, GPIOB_PIN_BK1080);
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if (!gIsInitBK1080) {
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for (i = 0; i < ARRAY_SIZE(BK1080_RegisterTable); i++)
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BK1080_WriteRegister(i, BK1080_RegisterTable[i]);
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SYSTEM_DelayMs(250);
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BK1080_WriteRegister(BK1080_REG_25_INTERNAL, 0xA83C);
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BK1080_WriteRegister(BK1080_REG_25_INTERNAL, 0xA8BC);
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SYSTEM_DelayMs(60);
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gIsInitBK1080 = true;
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}
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else {
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BK1080_WriteRegister(BK1080_REG_02_POWER_CONFIGURATION, 0x0201);
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}
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BK1080_WriteRegister(BK1080_REG_05_SYSTEM_CONFIGURATION2, 0x0A1F);
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BK1080_SetFrequency(freq, band/*, space*/);
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}
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else {
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BK1080_WriteRegister(BK1080_REG_02_POWER_CONFIGURATION, 0x0241);
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GPIO_SetBit(&GPIOB->DATA, GPIOB_PIN_BK1080);
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}
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}
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uint16_t BK1080_ReadRegister(BK1080_Register_t Register)
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{
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uint8_t Value[2];
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I2C_Start();
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I2C_Write(0x80);
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I2C_Write((Register << 1) | I2C_READ);
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I2C_ReadBuffer(Value, sizeof(Value));
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I2C_Stop();
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return (Value[0] << 8) | Value[1];
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}
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void BK1080_WriteRegister(BK1080_Register_t Register, uint16_t Value)
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{
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I2C_Start();
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I2C_Write(0x80);
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I2C_Write((Register << 1) | I2C_WRITE);
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Value = ((Value >> 8) & 0xFF) | ((Value & 0xFF) << 8);
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I2C_WriteBuffer(&Value, sizeof(Value));
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I2C_Stop();
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}
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void BK1080_Mute(bool Mute)
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{
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BK1080_WriteRegister(BK1080_REG_02_POWER_CONFIGURATION, Mute ? 0x4201 : 0x0201);
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}
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void BK1080_SetFrequency(uint16_t frequency, uint8_t band/*, uint8_t space*/)
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{
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//uint8_t spacings[] = {20,10,5};
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//space %= 3;
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uint16_t channel = (frequency - BK1080_GetFreqLoLimit(band))/* * 10 / spacings[space]*/;
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uint16_t regval = BK1080_ReadRegister(BK1080_REG_05_SYSTEM_CONFIGURATION2);
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regval = (regval & ~(0b11 << 6)) | ((band & 0b11) << 6);
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//regval = (regval & ~(0b11 << 4)) | ((space & 0b11) << 4);
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BK1080_WriteRegister(BK1080_REG_05_SYSTEM_CONFIGURATION2, regval);
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BK1080_WriteRegister(BK1080_REG_03_CHANNEL, channel);
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SYSTEM_DelayMs(10);
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BK1080_WriteRegister(BK1080_REG_03_CHANNEL, channel | 0x8000);
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}
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void BK1080_GetFrequencyDeviation(uint16_t Frequency)
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{
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BK1080_BaseFrequency = Frequency;
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BK1080_FrequencyDeviation = BK1080_ReadRegister(BK1080_REG_07) / 16;
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}
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uint16_t BK1080_GetFreqLoLimit(uint8_t band)
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{
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uint16_t lim[] = {875, 760, 760, 640};
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return lim[band % 4];
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}
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uint16_t BK1080_GetFreqHiLimit(uint8_t band)
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{
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band %= 4;
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uint16_t lim[] = {1080, 1080, 900, 760};
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return lim[band % 4];
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}
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