custom-uv-k5-firmware/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"

const uint32_t *gUpperLimitFrequencyBandTable;
const uint32_t *gLowerLimitFrequencyBandTable;

bool gSetting_350TX;
bool gSetting_KILLED;
bool gSetting_200TX;
bool gSetting_500TX;
bool gSetting_350EN;
uint8_t gSetting_F_LOCK;
bool gSetting_ScrambleEnable;
uint8_t gSetting_F_LOCK;

uint32_t gCustomPasswordKey[4];

bool bIsCheckExistingPassword;

uint8_t gEEPROM_1EC0_0[8];
uint8_t gEEPROM_1EC0_1[8];
uint8_t gEEPROM_1EC0_2[8];
uint8_t gEEPROM_1EC0_3[8];

uint16_t gEEPROM_RSSI_CALIB[3][4];

uint16_t gEEPROM_1F8A;
uint16_t gEEPROM_1F8C;

uint8_t gMR_ChannelAttributes[207];

volatile bool gNextTimeslice500ms;
volatile uint16_t gBatterySaveCountdown;
volatile uint16_t g_2000033A;
volatile uint16_t gTxTimerCountdown = 1000;
volatile uint16_t g_20000342;
volatile uint16_t gFmPlayCountdown = 1;
volatile uint16_t g_20000356;
uint16_t g_20000362;
uint8_t g_2000036B;
uint8_t gKeyLockCountdown;
uint8_t gRTTECountdown;
uint8_t g_2000036E;
uint8_t gUpdateStatus;
uint8_t g_20000370;
uint8_t g_20000371[2];
uint8_t g_20000373;
uint8_t gFoundCTCSS;
uint8_t gFoundCDCSS;
uint8_t g_20000377;
uint8_t gVFO_RSSI_Level[2];
uint8_t gReducedService;
uint8_t gBatteryVoltageIndex;
volatile uint8_t g_20000381;
uint8_t g_20000382;
uint8_t g_20000383;
uint16_t g_2000038E;
volatile int8_t gFM_Step;
uint8_t g_20000393;
bool g_20000394;
uint8_t g_20000395;
uint8_t gKeypadLocked;
uint8_t g_20000395;
uint8_t g_20000396;
uint8_t g_20000398;
uint8_t gVfoConfigureMode;
uint8_t g_2000039B;
bool gRequestSaveVFO;
uint8_t gRequestSaveChannel;
bool gRequestSaveSettings;
bool gRequestSaveFM;
uint8_t g_200003A0;
bool gFlagStartScan;
bool gFlagStopScan;
bool gFlagAcceptSetting;
bool gFlagRefreshSetting;
bool gFlagSaveVfo;
bool gFlagSaveSettings;
uint8_t gFlagSaveChannel;
bool gFlagSaveFM;
uint8_t g_200003AA;
bool g_CDCSS_Lost;
uint8_t gCDCSSCodeType;
bool g_CTCSS_Lost;
bool g_CxCSS_TAIL_Found;
bool g_VOX_Lost;
bool g_SquelchLost;
uint8_t gFlashLightState;
uint8_t g_200003B4;
uint16_t g_200003B6;
uint16_t g_200003B8;
uint8_t g_200003BA;
uint8_t g_200003BB;
uint8_t g_200003BC;
uint8_t g_200003BD;
uint8_t g_200003BE;
uint8_t g_200003C0;
bool gDTMF_DecodeRing;
uint8_t g_200003C3;
uint8_t gDTMF_DecodeRingCountdown;
uint8_t gDTMFChosenContact;
uint16_t g_200003E2;
volatile uint16_t gFlashLightBlinkCounter;
uint8_t g_200003FD;
uint8_t gLowBatteryCountdown;
uint8_t g_20000410;
uint8_t g_20000411;
uint8_t g_20000413;
uint8_t g_20000414;
uint8_t g_20000415;
uint8_t g_20000416;
uint32_t g_20000418;
uint8_t g_2000041F;
uint8_t g_20000420;
uint16_t g_20000422;
uint8_t g_20000427;
bool gKeyBeingHeld;
bool gPttIsPressed;
uint8_t gPttDebounceCounter;
uint8_t gDTMF_WriteIndex;
uint8_t g_20000438;
bool g_20000439;
uint8_t gMenuListCount;
uint8_t g_20000442;
uint8_t g_20000458;
uint8_t gBackupCROSS_BAND_RX_TX;
uint8_t g_CxCSS_Type;
uint8_t g_CxCSS_Index;
uint8_t g_2000045C;
uint8_t g_2000045D;
uint8_t g_2000045F;
uint8_t gScannerEditState;
uint8_t g_20000464;
uint8_t gAircopySendCountdown;
uint8_t gFSKWriteIndex;
uint8_t g_20000474;
char g_20000D1C[15];
char gDTMF_Received[16];
bool gIsDtmfContactValid;
char gDTMF_ID[4];
char gDTMF_Contact0[4];
char gDTMF_Contact1[4];
uint8_t g_CalloutAndDTMF_State;

bool gFM_AutoScan;
bool gIsNoaaMode;
volatile bool gNextTimeslice;
uint8_t gNoaaChannel;
bool gUpdateDisplay;
uint8_t gFmRadioCountdown;
uint8_t gFM_ChannelPosition;
uint8_t gDTMF_AUTO_RESET_TIME;
bool gF_LOCK;
uint8_t gScanChannel;
uint32_t gScanFrequency;
uint8_t gScanPauseMode;
uint8_t gScanState;
uint8_t gShowChPrefix;
volatile uint16_t gSystickCountdown2;
volatile uint8_t gFoundCDCSSCountdown;
volatile uint8_t gFoundCTCSSCountdown;
volatile uint16_t gSystickCountdown11;
volatile bool gTxTimeoutReached;
volatile bool gNextTimeslice40ms;
volatile bool gSchedulePowerSave;
volatile bool gBatterySaveCountdownExpired;
volatile bool gSystickFlag7;
volatile bool gSystickFlag8;
volatile bool gSystickFlag9;
volatile bool gSystickFlag10;
volatile bool gScheduleFM;

volatile uint16_t ScanPauseDelayIn10msec;

// Doubts about whether this should be signed or not.
int16_t gFM_FrequencyDeviation;

uint16_t gCurrentRSSI;

volatile int8_t gStepDirection;

// --------

void NUMBER_Get(char *pDigits, uint32_t *pInteger)
{
	uint32_t Value;
	uint32_t Multiplier;
	uint8_t i;

	Multiplier = 10000000;
	Value = 0;
	for (i = 0; i < 8; i++) {
		if (pDigits[i] > 9) {
			break;
		}
		Value += pDigits[i] * Multiplier;
		Multiplier /= 10U;
	}
	*pInteger = Value;
}

void NUMBER_ToDigits(uint32_t Value, char *pDigits)
{
	uint8_t i;

	for (i = 0; i < 8; i++) {
		uint32_t Result = Value / 10U;

		pDigits[7 - i] = Value - (Result * 10U);
		Value = Result;
	}
}

uint8_t NUMBER_AddWithWraparound(uint8_t Base, int8_t Add, uint8_t LowerLimit, uint8_t UpperLimit)
{
	Base += Add;
	if (Base == 0xFF || Base < LowerLimit) {
		return UpperLimit;
	}

	if (Base > UpperLimit) {
		return LowerLimit;
	}

	return Base;
}