misc.c

/* Copyright 2023 Dual Tachyon
 * https://github.com/DualTachyon
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *     Unless required by applicable law or agreed to in writing, software
 *     distributed under the License is distributed on an "AS IS" BASIS,
 *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *     See the License for the specific language governing permissions and
 *     limitations under the License.
 */

#include <string.h>

#include "misc.h"
#include "settings.h"

const uint8_t     fm_radio_countdown_500ms         =  2000 / 500;  // 2 seconds
const uint16_t    fm_play_countdown_scan_10ms      =   100 / 10;   // 100ms
const uint16_t    fm_play_countdown_noscan_10ms    =  1200 / 10;   // 1.2 seconds
const uint16_t    fm_restore_countdown_10ms        =  5000 / 10;   // 5 seconds

const uint8_t     vfo_state_resume_countdown_500ms =  2500 / 500;  // 2.5 seconds

const uint8_t     menu_timeout_500ms               =  20000 / 500;  // 20 seconds
const uint16_t    menu_timeout_long_500ms          = 120000 / 500;  // 2 minutes

const uint8_t     DTMF_RX_live_timeout_500ms       =  6000 / 500;  // 6 seconds live decoder on screen
#ifdef ENABLE_DTMF_CALLING
const uint8_t     DTMF_RX_timeout_500ms            = 10000 / 500;  // 10 seconds till we wipe the DTMF receiver
const uint8_t     DTMF_decode_ring_countdown_500ms = 15000 / 500;  // 15 seconds .. time we sound the ringing for
const uint8_t     DTMF_txstop_countdown_500ms      =  3000 / 500;  // 6 seconds
#endif

const uint8_t     key_input_timeout_500ms          =  8000 / 500;  // 8 seconds

const uint16_t    key_repeat_delay_10ms            =   400 / 10;   // 400ms
const uint16_t    key_repeat_10ms                  =    80 / 10;   // 80ms .. MUST be less than 'key_repeat_delay'
const uint16_t    key_debounce_10ms                =    20 / 10;   // 20ms

const uint8_t     scan_delay_10ms                  =   210 / 10;   // 210ms

const uint16_t    dual_watch_count_after_tx_10ms   =  3600 / 10;   // 3.6 sec after TX ends
const uint16_t    dual_watch_count_after_rx_10ms   =  1000 / 10;   // 1 sec after RX ends ?
const uint16_t    dual_watch_count_after_1_10ms    =  5000 / 10;   // 5 sec
const uint16_t    dual_watch_count_after_2_10ms    =  3600 / 10;   // 3.6 sec
const uint16_t    dual_watch_count_noaa_10ms       =    70 / 10;   // 70ms
#ifdef ENABLE_VOX
	const uint16_t dual_watch_count_after_vox_10ms  =   200 / 10;   // 200ms
#endif
const uint16_t    dual_watch_count_toggle_10ms     =   100 / 10;   // 100ms between VFO toggles

const uint16_t    scan_pause_delay_in_1_10ms       =  5000 / 10;   // 5 seconds
const uint16_t    scan_pause_delay_in_2_10ms       =   500 / 10;   // 500ms
const uint16_t    scan_pause_delay_in_3_10ms       =   200 / 10;   // 200ms
const uint16_t    scan_pause_delay_in_4_10ms       =   300 / 10;   // 300ms
const uint16_t    scan_pause_delay_in_5_10ms       =  1000 / 10;   // 1 sec
const uint16_t    scan_pause_delay_in_6_10ms       =   100 / 10;   // 100ms
const uint16_t    scan_pause_delay_in_7_10ms       =  3600 / 10;   // 3.6 seconds

const uint16_t    battery_save_count_10ms          = 10000 / 10;   // 10 seconds

const uint16_t    power_save1_10ms                 =   100 / 10;   // 100ms
const uint16_t    power_save2_10ms                 =   200 / 10;   // 200ms

#ifdef ENABLE_VOX
	const uint16_t    vox_stop_count_down_10ms         =  1000 / 10;   // 1 second
#endif

const uint16_t    NOAA_countdown_10ms              =  5000 / 10;   // 5 seconds
const uint16_t    NOAA_countdown_2_10ms            =   500 / 10;   // 500ms
const uint16_t    NOAA_countdown_3_10ms            =   200 / 10;   // 200ms

const uint32_t    gDefaultAesKey[4]                = {0x4AA5CC60, 0x0312CC5F, 0xFFD2DABB, 0x6BBA7F92};

const uint8_t     gMicGain_dB2[5]                  = {3, 8, 16, 24, 31};

bool              gSetting_350TX;
#ifdef ENABLE_DTMF_CALLING
bool              gSetting_KILLED;
#endif
bool              gSetting_200TX;
bool              gSetting_500TX;
bool              gSetting_350EN;
uint8_t           gSetting_F_LOCK;
bool              gSetting_ScrambleEnable;

enum BacklightOnRxTx_t gSetting_backlight_on_tx_rx;

#ifdef ENABLE_AUDIO_BAR
	bool          gSetting_mic_bar;
#endif
bool              gSetting_live_DTMF_decoder;
uint8_t           gSetting_battery_text;

bool              gMonitor = false;           // true opens the squelch

uint32_t          gCustomAesKey[4];
bool              bHasCustomAesKey;
uint32_t          gChallenge[4];
uint8_t           gTryCount;

uint16_t          gEEPROM_RSSI_CALIB[7][4];

uint16_t          gEEPROM_1F8A;
uint16_t          gEEPROM_1F8C;

ChannelAttributes_t gMR_ChannelAttributes[FREQ_CHANNEL_LAST + 1];

volatile uint16_t gBatterySaveCountdown_10ms = battery_save_count_10ms;

volatile bool     gPowerSaveCountdownExpired;
volatile bool     gSchedulePowerSave;

volatile bool     gScheduleDualWatch = true;

volatile uint16_t gDualWatchCountdown_10ms;
bool              gDualWatchActive           = false;

volatile uint8_t  gSerialConfigCountDown_500ms;

volatile bool     gNextTimeslice_500ms;

volatile uint16_t gTxTimerCountdown_500ms;
volatile bool     gTxTimeoutReached;

volatile uint16_t gTailToneEliminationCountdown_10ms;

volatile uint8_t    gVFOStateResumeCountdown_500ms;

#ifdef ENABLE_NOAA
	volatile uint16_t gNOAA_Countdown_10ms;
#endif

bool              gEnableSpeaker;
uint8_t           gKeyInputCountdown = 0;
uint8_t           gKeyLockCountdown;
uint8_t           gRTTECountdown_10ms;
bool              bIsInLockScreen;
uint8_t           gUpdateStatus;
uint8_t           gFoundCTCSS;
uint8_t           gFoundCDCSS;
bool              gEndOfRxDetectedMaybe;

int16_t           gVFO_RSSI[2];
uint8_t           gVFO_RSSI_bar_level[2];

uint8_t           gReducedService;
uint8_t           gBatteryVoltageIndex;
bool     		  gCssBackgroundScan;

volatile bool     gScheduleScanListen = true;
volatile uint16_t gScanPauseDelayIn_10ms;

#if defined(ENABLE_ALARM) || defined(ENABLE_TX1750)
	AlarmState_t  gAlarmState;
#endif
uint16_t          gMenuCountdown;
bool              gPttWasReleased;
bool              gPttWasPressed;
uint8_t           gKeypadLocked;
bool              gFlagReconfigureVfos;
uint8_t           gVfoConfigureMode;
bool              gFlagResetVfos;
bool              gRequestSaveVFO;
uint8_t           gRequestSaveChannel;
bool              gRequestSaveSettings;
#ifdef ENABLE_FMRADIO
	bool          gRequestSaveFM;
#endif
bool              gFlagPrepareTX;

bool              gFlagAcceptSetting;
bool              gFlagRefreshSetting;

#ifdef ENABLE_FMRADIO
	bool          gFlagSaveFM;
#endif
bool              g_CDCSS_Lost;
uint8_t           gCDCSSCodeType;
bool              g_CTCSS_Lost;
bool              g_CxCSS_TAIL_Found;
#ifdef ENABLE_VOX
	bool          g_VOX_Lost;
	bool          gVOX_NoiseDetected;
	uint16_t      gVoxResumeCountdown;
	uint16_t      gVoxPauseCountdown;
#endif
bool              g_SquelchLost;

volatile uint16_t gFlashLightBlinkCounter;

bool              gFlagEndTransmission;
uint8_t           gNextMrChannel;
ReceptionMode_t   gRxReceptionMode;

bool              gRxVfoIsActive;
#ifdef ENABLE_ALARM
	uint8_t       gAlarmToneCounter;
	uint16_t      gAlarmRunningCounter;
#endif
bool              gKeyBeingHeld;
bool              gPttIsPressed;
uint8_t           gPttDebounceCounter;
uint8_t           gMenuListCount;
uint8_t           gBackup_CROSS_BAND_RX_TX;
uint8_t           gScanDelay_10ms;
uint8_t           gFSKWriteIndex;

#ifdef ENABLE_NOAA
	bool          gIsNoaaMode;
	uint8_t       gNoaaChannel;
#endif

bool              gUpdateDisplay;

bool              gF_LOCK = false;

uint8_t           gShowChPrefix;

volatile bool     gNextTimeslice;
volatile uint8_t  gFoundCDCSSCountdown_10ms;
volatile uint8_t  gFoundCTCSSCountdown_10ms;
#ifdef ENABLE_VOX
	volatile uint16_t gVoxStopCountdown_10ms;
#endif
volatile bool     gNextTimeslice40ms;
#ifdef ENABLE_NOAA
	volatile uint16_t gNOAACountdown_10ms = 0;
	volatile bool     gScheduleNOAA       = true;
#endif
volatile bool     gFlagTailToneEliminationComplete;
#ifdef ENABLE_FMRADIO
	volatile bool gScheduleFM;
#endif

volatile uint8_t  boot_counter_10ms;

uint8_t           gIsLocked = 0xFF;


inline void FUNCTION_NOP() { ; }


int32_t NUMBER_AddWithWraparound(int32_t Base, int32_t Add, int32_t LowerLimit, int32_t UpperLimit)
{
	Base += Add;

	if (Base == 0x7fffffff || Base < LowerLimit)
		return UpperLimit;

	if (Base > UpperLimit)
		return LowerLimit;

	return Base;
}

unsigned long StrToUL(const char * str)
{
	unsigned long ul = 0;
	for(uint8_t i = 0; i < strlen(str); i++){
		char c = str[i];
		if(c < '0' || c > '9')
			break;
		ul = ul * 10 + (uint8_t)(c-'0');
	}
	return ul;
}

sLevelAttributes GetSLevelAttributes(const int16_t rssi, const uint32_t frequency)
{
	sLevelAttributes att;
	// S0 .. base level
	int16_t      s0_dBm       = -130;

	// all S1 on max gain, no antenna
	const int8_t dBmCorrTable[7] = {
		-5, // band 1
		-38, // band 2
		-37, // band 3
		-20, // band 4
		-23, // band 5
		-23, // band 6
		-16  // band 7
	};

	// use UHF/VHF S-table for bands above HF
	if(frequency > HF_FREQUENCY)
		s0_dBm-=20;

	att.dBmRssi = Rssi2DBm(rssi)+dBmCorrTable[FREQUENCY_GetBand(frequency)];
	att.sLevel  = MIN(MAX((att.dBmRssi - s0_dBm) / 6, 0), 9);
	att.over    = MIN(MAX(att.dBmRssi - (s0_dBm + 9*6), 0), 99);

	return att;
}

int Rssi2DBm(const uint16_t rssi)
{
	return (rssi >> 1) - 160;
}