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app.c
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app.c
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/* 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 "app/action.h"
#ifdef ENABLE_AIRCOPY
#include "app/aircopy.h"
#endif
#include "app/app.h"
#include "app/dtmf.h"
#ifdef ENABLE_FMRADIO
#include "app/fm.h"
#endif
#include "app/generic.h"
#include "app/main.h"
#include "app/menu.h"
#include "app/scanner.h"
#include "app/uart.h"
#include "ARMCM0.h"
#include "audio.h"
#include "board.h"
#include "bsp/dp32g030/gpio.h"
#include "driver/backlight.h"
#ifdef ENABLE_FMRADIO
#include "driver/bk1080.h"
#endif
#include "driver/bk4819.h"
#include "driver/gpio.h"
#include "driver/keyboard.h"
#include "driver/st7565.h"
#include "driver/system.h"
#include "am_fix.h"
#include "dtmf.h"
#include "external/printf/printf.h"
#include "frequencies.h"
#include "functions.h"
#include "helper/battery.h"
#include "misc.h"
#include "radio.h"
#include "settings.h"
#if defined(ENABLE_OVERLAY)
#include "sram-overlay.h"
#endif
#include "ui/battery.h"
#include "ui/inputbox.h"
#include "ui/main.h"
#include "ui/menu.h"
#include "ui/rssi.h"
#include "ui/status.h"
#include "ui/ui.h"
static void APP_ProcessKey(KEY_Code_t Key, bool bKeyPressed, bool bKeyHeld);
static void updateRSSI(const int vfo)
{
int16_t rssi = BK4819_GetRSSI();
#ifdef ENABLE_AM_FIX
// with compensation
if (gEeprom.VfoInfo[vfo].IsAM && gSetting_AM_fix)
rssi -= rssi_db_gain_diff[vfo] * 2;
#endif
gCurrentRSSI[vfo] = rssi;
UI_UpdateRSSI(rssi, vfo);
}
static void APP_CheckForIncoming(void)
{
if (!g_SquelchLost)
return;
// squelch is open
if (gScanState == SCAN_OFF)
{ // not RF scanning
if (gCssScanMode != CSS_SCAN_MODE_OFF && gRxReceptionMode == RX_MODE_NONE)
{ // CTCSS/DTS scanning
ScanPauseDelayIn_10ms = 100; // 1 second
gScheduleScanListen = false;
gRxReceptionMode = RX_MODE_DETECTED;
}
if (gEeprom.DUAL_WATCH == DUAL_WATCH_OFF)
{ // dual watch is disabled
#ifdef ENABLE_NOAA
if (gIsNoaaMode)
{
gNOAA_Countdown_10ms = 20; // 200ms
gScheduleNOAA = false;
}
#endif
FUNCTION_Select(FUNCTION_INCOMING);
return;
}
// dual watch is enabled and we're RX'ing a signal
if (gRxReceptionMode != RX_MODE_NONE)
{
FUNCTION_Select(FUNCTION_INCOMING);
return;
}
gDualWatchCountdown_10ms = dual_watch_count_after_rx_10ms;
gScheduleDualWatch = false;
// let the user see DW is not active
gDualWatchActive = false;
gUpdateStatus = true;
}
else
{
if (gRxReceptionMode != RX_MODE_NONE)
{
FUNCTION_Select(FUNCTION_INCOMING);
return;
}
ScanPauseDelayIn_10ms = 20; // 200ms
gScheduleScanListen = false;
}
gRxReceptionMode = RX_MODE_DETECTED;
FUNCTION_Select(FUNCTION_INCOMING);
}
static void APP_HandleIncoming(void)
{
bool bFlag;
if (!g_SquelchLost)
{ // squelch is closed
FUNCTION_Select(FUNCTION_FOREGROUND);
gUpdateDisplay = true;
return;
}
bFlag = (gScanState == SCAN_OFF && gCurrentCodeType == CODE_TYPE_OFF);
#ifdef ENABLE_NOAA
if (IS_NOAA_CHANNEL(gRxVfo->CHANNEL_SAVE) && gNOAACountdown_10ms > 0)
{
gNOAACountdown_10ms = 0;
bFlag = true;
}
#endif
if (g_CTCSS_Lost && gCurrentCodeType == CODE_TYPE_CONTINUOUS_TONE)
{
bFlag = true;
gFoundCTCSS = false;
}
if (g_CDCSS_Lost && gCDCSSCodeType == CDCSS_POSITIVE_CODE && (gCurrentCodeType == CODE_TYPE_DIGITAL || gCurrentCodeType == CODE_TYPE_REVERSE_DIGITAL))
{
gFoundCDCSS = false;
}
else
if (!bFlag)
return;
DTMF_HandleRequest();
if (gScanState == SCAN_OFF && gCssScanMode == CSS_SCAN_MODE_OFF)
{ // not scanning
if (gRxVfo->DTMF_DECODING_ENABLE || gSetting_KILLED)
{ // DTMF is enabled
if (gDTMF_CallState == DTMF_CALL_STATE_NONE)
{
if (gRxReceptionMode == RX_MODE_DETECTED)
{
gDualWatchCountdown_10ms = dual_watch_count_after_1_10ms;
gScheduleDualWatch = false;
gRxReceptionMode = RX_MODE_LISTENING;
// let the user see DW is not active
gDualWatchActive = false;
gUpdateStatus = true;
return;
}
}
}
}
APP_StartListening(FUNCTION_RECEIVE, false);
}
static void APP_HandleReceive(void)
{
#define END_OF_RX_MODE_SKIP 0
#define END_OF_RX_MODE_END 1
#define END_OF_RX_MODE_TTE 2
uint8_t Mode = END_OF_RX_MODE_SKIP;
if (gFlagTailNoteEliminationComplete)
{
Mode = END_OF_RX_MODE_END;
goto Skip;
}
if (gScanState != SCAN_OFF && IS_FREQ_CHANNEL(gNextMrChannel))
{
if (g_SquelchLost)
return;
Mode = END_OF_RX_MODE_END;
goto Skip;
}
switch (gCurrentCodeType)
{
default:
case CODE_TYPE_OFF:
break;
case CODE_TYPE_CONTINUOUS_TONE:
if (gFoundCTCSS && gFoundCTCSSCountdown_10ms == 0)
{
gFoundCTCSS = false;
gFoundCDCSS = false;
Mode = END_OF_RX_MODE_END;
goto Skip;
}
break;
case CODE_TYPE_DIGITAL:
case CODE_TYPE_REVERSE_DIGITAL:
if (gFoundCDCSS && gFoundCDCSSCountdown_10ms == 0)
{
gFoundCTCSS = false;
gFoundCDCSS = false;
Mode = END_OF_RX_MODE_END;
goto Skip;
}
break;
}
if (g_SquelchLost)
{
#ifdef ENABLE_NOAA
if (!gEndOfRxDetectedMaybe && IS_NOT_NOAA_CHANNEL(gRxVfo->CHANNEL_SAVE))
#else
if (!gEndOfRxDetectedMaybe)
#endif
{
switch (gCurrentCodeType)
{
case CODE_TYPE_OFF:
if (gEeprom.SQUELCH_LEVEL)
{
if (g_CxCSS_TAIL_Found)
{
Mode = END_OF_RX_MODE_TTE;
g_CxCSS_TAIL_Found = false;
}
}
break;
case CODE_TYPE_CONTINUOUS_TONE:
if (g_CTCSS_Lost)
{
gFoundCTCSS = false;
}
else
if (!gFoundCTCSS)
{
gFoundCTCSS = true;
gFoundCTCSSCountdown_10ms = 100; // 1 sec
}
if (g_CxCSS_TAIL_Found)
{
Mode = END_OF_RX_MODE_TTE;
g_CxCSS_TAIL_Found = false;
}
break;
case CODE_TYPE_DIGITAL:
case CODE_TYPE_REVERSE_DIGITAL:
if (g_CDCSS_Lost && gCDCSSCodeType == CDCSS_POSITIVE_CODE)
{
gFoundCDCSS = false;
}
else
if (!gFoundCDCSS)
{
gFoundCDCSS = true;
gFoundCDCSSCountdown_10ms = 100; // 1 sec
}
if (g_CxCSS_TAIL_Found)
{
if (BK4819_GetCTCType() == 1)
Mode = END_OF_RX_MODE_TTE;
g_CxCSS_TAIL_Found = false;
}
break;
}
}
}
else
Mode = END_OF_RX_MODE_END;
if (!gEndOfRxDetectedMaybe &&
Mode == END_OF_RX_MODE_SKIP &&
gNextTimeslice40ms &&
gEeprom.TAIL_NOTE_ELIMINATION &&
(gCurrentCodeType == CODE_TYPE_DIGITAL || gCurrentCodeType == CODE_TYPE_REVERSE_DIGITAL) &&
BK4819_GetCTCType() == 1)
Mode = END_OF_RX_MODE_TTE;
else
gNextTimeslice40ms = false;
Skip:
switch (Mode)
{
case END_OF_RX_MODE_SKIP:
break;
case END_OF_RX_MODE_END:
RADIO_SetupRegisters(true);
#ifdef ENABLE_NOAA
if (IS_NOAA_CHANNEL(gRxVfo->CHANNEL_SAVE))
gNOAACountdown_10ms = 300; // 3 sec
#endif
gUpdateDisplay = true;
if (gScanState != SCAN_OFF)
{
switch (gEeprom.SCAN_RESUME_MODE)
{
case SCAN_RESUME_TO:
break;
case SCAN_RESUME_CO:
ScanPauseDelayIn_10ms = 360;
gScheduleScanListen = false;
break;
case SCAN_RESUME_SE:
SCANNER_Stop();
break;
}
}
break;
case END_OF_RX_MODE_TTE:
if (gEeprom.TAIL_NOTE_ELIMINATION)
{
GPIO_ClearBit(&GPIOC->DATA, GPIOC_PIN_AUDIO_PATH);
gTailNoteEliminationCountdown_10ms = 20;
gFlagTailNoteEliminationComplete = false;
gEndOfRxDetectedMaybe = true;
gEnableSpeaker = false;
}
break;
}
}
static void APP_HandleFunction(void)
{
switch (gCurrentFunction)
{
case FUNCTION_FOREGROUND:
APP_CheckForIncoming();
break;
case FUNCTION_TRANSMIT:
break;
case FUNCTION_MONITOR:
break;
case FUNCTION_INCOMING:
APP_HandleIncoming();
break;
case FUNCTION_RECEIVE:
APP_HandleReceive();
break;
case FUNCTION_POWER_SAVE:
if (!gRxIdleMode)
APP_CheckForIncoming();
break;
case FUNCTION_BAND_SCOPE:
break;
}
}
void APP_StartListening(FUNCTION_Type_t Function, const bool reset_am_fix)
{
if (gSetting_KILLED)
return;
#ifdef ENABLE_FMRADIO
if (gFmRadioMode)
BK1080_Init(0, false);
#endif
#ifdef ENABLE_AM_FIX
if (gEeprom.VfoInfo[gEeprom.RX_CHANNEL].IsAM && reset_am_fix)
AM_fix_reset(gEeprom.RX_CHANNEL); // TODO: only reset it when moving channel/frequency
#endif
// clear the other vfo's rssi level (to hide the antenna symbol)
gVFO_RSSI_bar_level[gEeprom.RX_CHANNEL == 0] = 0;
GPIO_SetBit(&GPIOC->DATA, GPIOC_PIN_AUDIO_PATH);
gEnableSpeaker = true;
BACKLIGHT_TurnOn();
if (gScanState != SCAN_OFF)
{
switch (gEeprom.SCAN_RESUME_MODE)
{
case SCAN_RESUME_TO:
if (!gScanPauseMode)
{
ScanPauseDelayIn_10ms = 500;
gScheduleScanListen = false;
gScanPauseMode = true;
}
break;
case SCAN_RESUME_CO:
case SCAN_RESUME_SE:
ScanPauseDelayIn_10ms = 0;
gScheduleScanListen = false;
break;
}
bScanKeepFrequency = true;
}
#ifdef ENABLE_NOAA
if (IS_NOAA_CHANNEL(gRxVfo->CHANNEL_SAVE) && gIsNoaaMode)
{
gRxVfo->CHANNEL_SAVE = gNoaaChannel + NOAA_CHANNEL_FIRST;
gRxVfo->pRX->Frequency = NoaaFrequencyTable[gNoaaChannel];
gRxVfo->pTX->Frequency = NoaaFrequencyTable[gNoaaChannel];
gEeprom.ScreenChannel[gEeprom.RX_CHANNEL] = gRxVfo->CHANNEL_SAVE;
gNOAA_Countdown_10ms = 500; // 5 sec
gScheduleNOAA = false;
}
#endif
if (gCssScanMode != CSS_SCAN_MODE_OFF)
gCssScanMode = CSS_SCAN_MODE_FOUND;
if (gScanState == SCAN_OFF && gCssScanMode == CSS_SCAN_MODE_OFF && gEeprom.DUAL_WATCH != DUAL_WATCH_OFF)
{ // not scanning, dual watch is enabled
gDualWatchCountdown_10ms = dual_watch_count_after_2_10ms;
gScheduleDualWatch = false;
gRxVfoIsActive = true;
// let the user see DW is not active
gDualWatchActive = false;
gUpdateStatus = true;
}
// original setting
uint8_t lna_short = orig_lna_short;
uint8_t lna = orig_lna;
uint8_t mixer = orig_mixer;
uint8_t pga = orig_pga;
if (gRxVfo->IsAM)
{ // AM
#ifndef ENABLE_AM_FIX
const uint32_t rx_frequency = gRxVfo->pRX->Frequency;
// the RX gain abrutly reduces above this frequency
// I guess this is (one of) the freq the hardware switches the front ends over ?
if (rx_frequency <= 22640000)
{ // decrease front end gain - AM demodulator saturates at a slightly higher signal level
lna_short = 3; // 3 original
lna = 2; // 2 original
mixer = 3; // 3 original
pga = 3; // 6 original, 3 reduced
}
else
{ // increase the front end to compensate the reduced gain, but more gain decreases dynamic range :(
lna_short = 3; // 3 original
lna = 4; // 2 original, 4 increased
mixer = 3; // 3 original
pga = 7; // 6 original, 7 increased
}
#endif
// what do these 4 other gain settings do ???
//BK4819_WriteRegister(BK4819_REG_12, 0x037B); // 000000 11 011 11 011
//BK4819_WriteRegister(BK4819_REG_11, 0x027B); // 000000 10 011 11 011
//BK4819_WriteRegister(BK4819_REG_10, 0x007A); // 000000 00 011 11 010
//BK4819_WriteRegister(BK4819_REG_14, 0x0019); // 000000 00 000 11 001
gNeverUsed = 0;
}
// apply the front end gain settings
BK4819_WriteRegister(BK4819_REG_13, ((uint16_t)lna_short << 8) | ((uint16_t)lna << 5) | ((uint16_t)mixer << 3) | ((uint16_t)pga << 0));
// AF gain - original
BK4819_WriteRegister(BK4819_REG_48,
(11u << 12) | // ??? .. 0 to 15, doesn't seem to make any difference
( 0u << 10) | // AF Rx Gain-1
(gEeprom.VOLUME_GAIN << 4) | // AF Rx Gain-2
(gEeprom.DAC_GAIN << 0)); // AF DAC Gain (after Gain-1 and Gain-2)
#ifdef ENABLE_VOICE
if (gVoiceWriteIndex == 0)
#endif
BK4819_SetAF(gRxVfo->IsAM ? BK4819_AF_AM : BK4819_AF_OPEN);
FUNCTION_Select(Function);
#ifdef ENABLE_FMRADIO
if (Function == FUNCTION_MONITOR || gFmRadioMode)
#else
if (Function == FUNCTION_MONITOR)
#endif
{ // squelch is disabled
GUI_SelectNextDisplay(DISPLAY_MAIN);
return;
}
gUpdateDisplay = true;
}
void APP_SetFrequencyByStep(VFO_Info_t *pInfo, int8_t Step)
{
uint32_t Frequency = pInfo->ConfigRX.Frequency + (Step * pInfo->StepFrequency);
if (pInfo->StepFrequency == 833)
{
const uint32_t Lower = LowerLimitFrequencyBandTable[pInfo->Band];
const uint32_t Delta = Frequency - Lower;
uint32_t Base = (Delta / 2500) * 2500;
const uint32_t Index = ((Delta - Base) % 2500) / 833;
if (Index == 2)
Base++;
Frequency = Lower + Base + (Index * 833);
}
if (Frequency > UpperLimitFrequencyBandTable[pInfo->Band])
Frequency = LowerLimitFrequencyBandTable[pInfo->Band];
else
if (Frequency < LowerLimitFrequencyBandTable[pInfo->Band])
Frequency = FREQUENCY_FloorToStep(UpperLimitFrequencyBandTable[pInfo->Band], pInfo->StepFrequency, LowerLimitFrequencyBandTable[pInfo->Band]);
pInfo->ConfigRX.Frequency = Frequency;
}
static void FREQ_NextChannel(void)
{
APP_SetFrequencyByStep(gRxVfo, gScanState);
RADIO_ApplyOffset(gRxVfo);
RADIO_ConfigureSquelchAndOutputPower(gRxVfo);
RADIO_SetupRegisters(true);
gUpdateDisplay = true;
ScanPauseDelayIn_10ms = 10;
bScanKeepFrequency = false;
}
static void MR_NextChannel(void)
{
uint8_t Ch;
uint8_t Ch1 = gEeprom.SCANLIST_PRIORITY_CH1[gEeprom.SCAN_LIST_DEFAULT];
uint8_t Ch2 = gEeprom.SCANLIST_PRIORITY_CH2[gEeprom.SCAN_LIST_DEFAULT];
uint8_t PreviousCh = gNextMrChannel;
bool bEnabled = gEeprom.SCAN_LIST_ENABLED[gEeprom.SCAN_LIST_DEFAULT];
if (bEnabled)
{
if (gCurrentScanList == 0)
{
gPreviousMrChannel = gNextMrChannel;
if (RADIO_CheckValidChannel(Ch1, false, 0))
gNextMrChannel = Ch1;
else
gCurrentScanList = 1;
}
if (gCurrentScanList == 1)
{
if (RADIO_CheckValidChannel(Ch2, false, 0))
gNextMrChannel = Ch2;
else
gCurrentScanList = 2;
}
if (gCurrentScanList == 2)
gNextMrChannel = gPreviousMrChannel;
else
goto Skip;
}
Ch = RADIO_FindNextChannel(gNextMrChannel + gScanState, gScanState, true, gEeprom.SCAN_LIST_DEFAULT);
if (Ch == 0xFF)
return;
gNextMrChannel = Ch;
Skip:
if (PreviousCh != gNextMrChannel)
{
gEeprom.MrChannel[gEeprom.RX_CHANNEL] = gNextMrChannel;
gEeprom.ScreenChannel[gEeprom.RX_CHANNEL] = gNextMrChannel;
RADIO_ConfigureChannel(gEeprom.RX_CHANNEL, 2);
RADIO_SetupRegisters(true);
gUpdateDisplay = true;
}
ScanPauseDelayIn_10ms = 20;
bScanKeepFrequency = false;
if (bEnabled)
if (++gCurrentScanList >= 2)
gCurrentScanList = 0;
}
#ifdef ENABLE_NOAA
static void NOAA_IncreaseChannel(void)
{
if (++gNoaaChannel > 9)
gNoaaChannel = 0;
}
#endif
static void DUALWATCH_Alternate(void)
{
#ifdef ENABLE_NOAA
if (gIsNoaaMode)
{
if (IS_NOT_NOAA_CHANNEL(gEeprom.ScreenChannel[0]) || IS_NOT_NOAA_CHANNEL(gEeprom.ScreenChannel[1]))
gEeprom.RX_CHANNEL = (gEeprom.RX_CHANNEL + 1) & 1;
else
gEeprom.RX_CHANNEL = 0;
gRxVfo = &gEeprom.VfoInfo[gEeprom.RX_CHANNEL];
if (gEeprom.VfoInfo[0].CHANNEL_SAVE >= NOAA_CHANNEL_FIRST)
NOAA_IncreaseChannel();
}
else
#endif
{ // toggle between VFO's
gEeprom.RX_CHANNEL = (gEeprom.RX_CHANNEL + 1) & 1;
gRxVfo = &gEeprom.VfoInfo[gEeprom.RX_CHANNEL];
if (!gDualWatchActive)
{ // let the user see DW is active
gDualWatchActive = true;
gUpdateStatus = true;
}
}
RADIO_SetupRegisters(false);
#ifdef ENABLE_NOAA
gDualWatchCountdown_10ms = gIsNoaaMode ? dual_watch_count_noaa_10ms : dual_watch_count_toggle_10ms;
#else
gDualWatchCountdown_10ms = dual_watch_count_toggle_10ms;
#endif
}
void APP_CheckRadioInterrupts(void)
{
if (gScreenToDisplay == DISPLAY_SCANNER)
return;
while (BK4819_ReadRegister(BK4819_REG_0C) & 1u)
{ // BK chip interrupt request
uint16_t interrupt_status_bits;
// reset the interrupt ?
BK4819_WriteRegister(BK4819_REG_02, 0);
// fetch the interrupt status bits
interrupt_status_bits = BK4819_ReadRegister(BK4819_REG_02);
// 0 = no phase shift
// 1 = 120deg phase shift
// 2 = 180deg phase shift
// 3 = 240deg phase shift
// const uint8_t ctcss_shift = BK4819_GetCTCShift();
// if (ctcss_shift > 0)
// g_CTCSS_Lost = true;
if (interrupt_status_bits & BK4819_REG_02_DTMF_5TONE_FOUND)
{ // save the new DTMF RX'ed character
// fetch the RX'ed char
const char c = DTMF_GetCharacter(BK4819_GetDTMF_5TONE_Code());
if (c != 0xff)
{
gDTMF_RequestPending = true;
gDTMF_RecvTimeout = DTMF_RX_timeout_500ms;
// shift the RX buffer down one - if need be
if (gDTMF_WriteIndex >= sizeof(gDTMF_Received))
memmove(gDTMF_Received, &gDTMF_Received[1], gDTMF_WriteIndex-- - 1);
gDTMF_Received[gDTMF_WriteIndex++] = c;
if (gCurrentFunction == FUNCTION_RECEIVE)
{
{ // live DTMF decoder
gDTMF_RecvTimeoutSaved = DTMF_RX_timeout_saved_500ms;
size_t len = strlen(gDTMF_ReceivedSaved);
// shift the RX buffer down one - if need be
if (len >= (sizeof(gDTMF_ReceivedSaved) - 1))
memmove(gDTMF_ReceivedSaved, &gDTMF_ReceivedSaved[1], len--);
gDTMF_ReceivedSaved[len++] = c;
gDTMF_ReceivedSaved[len] = '\0';
gUpdateDisplay = true;
}
DTMF_HandleRequest();
}
}
}
if (interrupt_status_bits & BK4819_REG_02_CxCSS_TAIL)
g_CxCSS_TAIL_Found = true;
if (interrupt_status_bits & BK4819_REG_02_CDCSS_LOST)
{
g_CDCSS_Lost = true;
gCDCSSCodeType = BK4819_GetCDCSSCodeType();
}
if (interrupt_status_bits & BK4819_REG_02_CDCSS_FOUND)
g_CDCSS_Lost = false;
if (interrupt_status_bits & BK4819_REG_02_CTCSS_LOST)
g_CTCSS_Lost = true;
if (interrupt_status_bits & BK4819_REG_02_CTCSS_FOUND)
g_CTCSS_Lost = false;
if (interrupt_status_bits & BK4819_REG_02_VOX_LOST)
{
g_VOX_Lost = true;
gVoxPauseCountdown = 10;
if (gEeprom.VOX_SWITCH)
{
if (gCurrentFunction == FUNCTION_POWER_SAVE && !gRxIdleMode)
{
gPowerSave_10ms = power_save2_10ms;
gPowerSaveCountdownExpired = 0;
}
if (gEeprom.DUAL_WATCH != DUAL_WATCH_OFF && (gScheduleDualWatch || gDualWatchCountdown_10ms < dual_watch_count_after_vox_10ms))
{
gDualWatchCountdown_10ms = dual_watch_count_after_vox_10ms;
gScheduleDualWatch = false;
// let the user see DW is not active
gDualWatchActive = false;
gUpdateStatus = true;
}
}
}
if (interrupt_status_bits & BK4819_REG_02_VOX_FOUND)
{
g_VOX_Lost = false;
gVoxPauseCountdown = 0;
}
if (interrupt_status_bits & BK4819_REG_02_SQUELCH_LOST)
{
g_SquelchLost = true;
BK4819_ToggleGpioOut(BK4819_GPIO0_PIN28_GREEN, true);
}
if (interrupt_status_bits & BK4819_REG_02_SQUELCH_FOUND)
{
g_SquelchLost = false;
BK4819_ToggleGpioOut(BK4819_GPIO0_PIN28_GREEN, false);
}
#ifdef ENABLE_AIRCOPY
if (interrupt_status_bits & BK4819_REG_02_FSK_FIFO_ALMOST_FULL &&
gScreenToDisplay == DISPLAY_AIRCOPY &&
gAircopyState == AIRCOPY_TRANSFER &&
gAirCopyIsSendMode == 0)
{
unsigned int i;
for (i = 0; i < 4; i++)
g_FSK_Buffer[gFSKWriteIndex++] = BK4819_ReadRegister(BK4819_REG_5F);
AIRCOPY_StorePacket();
}
#endif
}
}
void APP_EndTransmission(void)
{ // back to RX mode
RADIO_SendEndOfTransmission();
if (gCurrentVfo->pTX->CodeType != CODE_TYPE_OFF)
{ // CTCSS/DCS is enabled
//if (gEeprom.TAIL_NOTE_ELIMINATION && gEeprom.REPEATER_TAIL_TONE_ELIMINATION > 0)
if (gEeprom.TAIL_NOTE_ELIMINATION)
{ // send the CTCSS/DCS tail tone - allows the receivers to mute the usual FM squelch tail/crash
RADIO_EnableCxCSS();
}
#if 0
else
{ // TX a short blank carrier
// this gives the receivers time to mute RX audio before we drop carrier
BK4819_ExitSubAu();
SYSTEM_DelayMs(200);
}
#endif
}
RADIO_SetupRegisters(false);
}
static void APP_HandleVox(void)
{
if (!gSetting_KILLED)
{
if (gVoxResumeCountdown == 0)
{
if (gVoxPauseCountdown)
return;
}
else
{
g_VOX_Lost = false;
gVoxPauseCountdown = 0;
}
if (gCurrentFunction != FUNCTION_RECEIVE &&
gCurrentFunction != FUNCTION_MONITOR &&
gScanState == SCAN_OFF &&
gCssScanMode == CSS_SCAN_MODE_OFF
#ifdef ENABLE_FMRADIO
&& !gFmRadioMode
#endif
)
{
if (gVOX_NoiseDetected)
{
if (g_VOX_Lost)
gVoxStopCountdown_10ms = 100; // 1 sec
else
if (gVoxStopCountdown_10ms == 0)
gVOX_NoiseDetected = false;
if (gCurrentFunction == FUNCTION_TRANSMIT && !gPttIsPressed && !gVOX_NoiseDetected)
{
if (gFlagEndTransmission)
{
FUNCTION_Select(FUNCTION_FOREGROUND);
}
else
{
APP_EndTransmission();
if (gEeprom.REPEATER_TAIL_TONE_ELIMINATION == 0)
FUNCTION_Select(FUNCTION_FOREGROUND);
else
gRTTECountdown = gEeprom.REPEATER_TAIL_TONE_ELIMINATION * 10;
}
gUpdateDisplay = true;
gFlagEndTransmission = false;
return;
}
}
else
if (g_VOX_Lost)
{
gVOX_NoiseDetected = true;
if (gCurrentFunction == FUNCTION_POWER_SAVE)
FUNCTION_Select(FUNCTION_FOREGROUND);
if (gCurrentFunction != FUNCTION_TRANSMIT)
{
gDTMF_ReplyState = DTMF_REPLY_NONE;
RADIO_PrepareTX();
gUpdateDisplay = true;
}
}
}
}
}
void APP_Update(void)
{
#ifdef ENABLE_VOICE
if (gFlagPlayQueuedVoice)
{
AUDIO_PlayQueuedVoice();
gFlagPlayQueuedVoice = false;
}
#endif
if (gCurrentFunction == FUNCTION_TRANSMIT && gTxTimeoutReached)
{ // transmitting, but just timed out
gTxTimeoutReached = false;
gFlagEndTransmission = true;
APP_EndTransmission();
AUDIO_PlayBeep(BEEP_500HZ_60MS_DOUBLE_BEEP);
RADIO_SetVfoState(VFO_STATE_TIMEOUT);
GUI_DisplayScreen();
}
if (gReducedService)
return;
if (gCurrentFunction != FUNCTION_TRANSMIT)
APP_HandleFunction();
#ifdef ENABLE_FMRADIO
if (gFmRadioCountdown_500ms > 0)
return;
#endif
#ifdef ENABLE_VOICE
if (gScreenToDisplay != DISPLAY_SCANNER && gScanState != SCAN_OFF && gScheduleScanListen && !gPttIsPressed && gVoiceWriteIndex == 0)
#else
if (gScreenToDisplay != DISPLAY_SCANNER && gScanState != SCAN_OFF && gScheduleScanListen && !gPttIsPressed)
#endif
{
if (IS_FREQ_CHANNEL(gNextMrChannel))
{
if (gCurrentFunction == FUNCTION_INCOMING)
APP_StartListening(FUNCTION_RECEIVE, true);
else
FREQ_NextChannel();
}
else
{
if (gCurrentCodeType == CODE_TYPE_OFF && gCurrentFunction == FUNCTION_INCOMING)
APP_StartListening(FUNCTION_RECEIVE, true);
else
MR_NextChannel();
}
gScanPauseMode = false;
gRxReceptionMode = RX_MODE_NONE;
gScheduleScanListen = false;
}
#ifdef ENABLE_VOICE
if (gCssScanMode == CSS_SCAN_MODE_SCANNING && gScheduleScanListen && gVoiceWriteIndex == 0)
#else