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uv-k1-k5v3-firmware-custom/App/app/beam.c
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2026-05-06 00:03:26 +02:00

326 lines
9.4 KiB
C

/* Copyright 2026 Armel F4HWN
* https://github.com/armel
*
* 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.
*/
#ifdef ENABLE_FEAT_F4HWN_BEAM
#include <assert.h>
#include <string.h>
#include "app/aircopy.h"
#include "app/beam.h"
#include "audio.h"
#include "driver/bk4819.h"
#include "driver/crc.h"
#include "driver/st7565.h"
#include "frequencies.h"
#include "misc.h"
#include "radio.h"
#include "settings.h"
#include "ui/main.h"
#include "ui/ui.h"
#define BEAM_PACKET_MAGIC 0xBEA5u
#define BEAM_PACKET_VERSION 2u
// One byte per field instead of bit-packing — payload still fits in 64 bytes,
// and avoids costly shift/mask/store sequences on Cortex-M.
typedef struct {
uint16_t magic;
uint8_t version;
uint8_t _pad;
uint32_t rx_frequency;
uint32_t tx_offset_frequency;
uint8_t rx_code;
uint8_t tx_code;
uint8_t rx_codetype;
uint8_t tx_codetype;
uint8_t modulation;
uint8_t tx_offset_direction;
uint8_t tx_lock;
uint8_t busy_channel_lock;
uint8_t output_power;
uint8_t channel_bandwidth;
uint8_t frequency_reverse;
uint8_t dtmf_ptt_id_mode;
uint8_t dtmf_decoding_enable;
uint8_t step_setting;
uint8_t scrambling_type;
uint8_t band;
uint8_t scanlist;
uint8_t compander;
char name[16];
} BEAM_Payload_t;
static_assert(sizeof(BEAM_Payload_t) <= 64);
BEAM_Mode_t gBeamMode = BEAM_MODE_TX;
BEAM_Status_t gBeamStatus = BEAM_STATUS_READY;
uint16_t gBeamCopiedChannel = 0xFFFFu;
uint8_t gBeamRxWordCount;
bool gBeamActive;
static VFO_Info_t gBeamRadioVfo;
static void BEAM_SetRadioToBeamFrequency(void)
{
const uint16_t channel = FREQ_CHANNEL_FIRST + BAND6_400MHz;
RADIO_InitInfo(&gBeamRadioVfo, channel, DEFAULT_FREQ);
gBeamRadioVfo.CHANNEL_BANDWIDTH = BANDWIDTH_NARROW;
gBeamRadioVfo.OUTPUT_POWER = OUTPUT_POWER_LOW1;
RADIO_ConfigureSquelchAndOutputPower(&gBeamRadioVfo);
gRxVfo = &gBeamRadioVfo;
gTxVfo = &gBeamRadioVfo;
gCurrentVfo = gRxVfo;
RADIO_SetupRegisters(true);
BK4819_SetupAircopy();
BK4819_ResetFSK();
}
static void BEAM_SendPacket(void)
{
memset(g_FSK_Buffer, 0, sizeof(g_FSK_Buffer));
g_FSK_Buffer[0] = 0xABCDu;
BEAM_Payload_t * const payload = (BEAM_Payload_t *)&g_FSK_Buffer[2];
const VFO_Info_t *vfo = &gEeprom.VfoInfo[gEeprom.TX_VFO];
payload->magic = BEAM_PACKET_MAGIC;
payload->version = BEAM_PACKET_VERSION;
payload->rx_frequency = vfo->freq_config_RX.Frequency;
payload->tx_offset_frequency = vfo->TX_OFFSET_FREQUENCY;
payload->rx_code = vfo->freq_config_RX.Code;
payload->tx_code = vfo->freq_config_TX.Code;
payload->rx_codetype = vfo->freq_config_RX.CodeType;
payload->tx_codetype = vfo->freq_config_TX.CodeType;
payload->modulation = vfo->Modulation;
payload->tx_offset_direction = vfo->TX_OFFSET_FREQUENCY_DIRECTION;
payload->tx_lock = vfo->TX_LOCK;
payload->busy_channel_lock = vfo->BUSY_CHANNEL_LOCK;
payload->output_power = vfo->OUTPUT_POWER;
payload->channel_bandwidth = vfo->CHANNEL_BANDWIDTH;
payload->frequency_reverse = vfo->FrequencyReverse;
payload->dtmf_ptt_id_mode = vfo->DTMF_PTT_ID_TX_MODE;
#ifdef ENABLE_DTMF_CALLING
payload->dtmf_decoding_enable = vfo->DTMF_DECODING_ENABLE;
#endif
payload->step_setting = vfo->STEP_SETTING;
payload->scrambling_type = vfo->SCRAMBLING_TYPE;
payload->band = vfo->Band;
payload->scanlist = vfo->SCANLIST_PARTICIPATION;
payload->compander = vfo->Compander;
if (IS_MR_CHANNEL(vfo->CHANNEL_SAVE)) {
SETTINGS_FetchChannelName(payload->name, vfo->CHANNEL_SAVE);
} else {
memcpy(payload->name, vfo->Name, sizeof(vfo->Name));
}
g_FSK_Buffer[34] = CRC_Calculate(&g_FSK_Buffer[1], 2 + 64);
g_FSK_Buffer[35] = 0xDCBAu;
AIRCOPY_Obfuscate(32);
// Show "SENDING" before the blocking FSK transmission so the user gets
// immediate visual feedback instead of a frozen "BEAM TX" screen.
gBeamStatus = BEAM_STATUS_TX_WAIT;
UI_DisplayMain();
ST7565_BlitFullScreen();
RADIO_SetTxParameters();
BK4819_SendFSKData(g_FSK_Buffer);
BK4819_SetupPowerAmplifier(0, 0);
BK4819_ToggleGpioOut(BK4819_GPIO1_PIN29_PA_ENABLE, false);
RADIO_SelectVfos();
RADIO_SetupRegisters(true);
gBeamStatus = BEAM_STATUS_TX_DONE;
gBeepToPlay = BEEP_880HZ_60MS_TRIPLE_BEEP;
gUpdateDisplay = true;
}
static void BEAM_SavePayloadToFirstFreeChannel(const BEAM_Payload_t *payload)
{
uint16_t channel = 0xFFFFu;
for (uint16_t c = MR_CHANNEL_FIRST; IS_MR_CHANNEL(c); c++) {
if (!RADIO_CheckValidChannel(c, false, 0)) {
channel = c;
break;
}
}
if (channel == 0xFFFFu) {
gBeamStatus = BEAM_STATUS_RX_FULL;
gUpdateDisplay = true;
return;
}
VFO_Info_t vfo;
RADIO_InitInfo(&vfo, channel, payload->rx_frequency);
// CRC + magic + version already validate the payload — no need to clamp fields.
vfo.TX_OFFSET_FREQUENCY = payload->tx_offset_frequency;
vfo.freq_config_RX.Code = payload->rx_code;
vfo.freq_config_TX.Code = payload->tx_code;
vfo.freq_config_RX.CodeType = payload->rx_codetype;
vfo.freq_config_TX.CodeType = payload->tx_codetype;
vfo.TX_OFFSET_FREQUENCY_DIRECTION = payload->tx_offset_direction;
vfo.Modulation = payload->modulation;
vfo.TX_LOCK = payload->tx_lock;
vfo.BUSY_CHANNEL_LOCK = payload->busy_channel_lock;
vfo.OUTPUT_POWER = payload->output_power;
vfo.CHANNEL_BANDWIDTH = payload->channel_bandwidth;
vfo.FrequencyReverse = payload->frequency_reverse;
vfo.DTMF_PTT_ID_TX_MODE = payload->dtmf_ptt_id_mode;
#ifdef ENABLE_DTMF_CALLING
vfo.DTMF_DECODING_ENABLE = payload->dtmf_decoding_enable;
#endif
vfo.STEP_SETTING = payload->step_setting;
vfo.StepFrequency = gStepFrequencyTable[vfo.STEP_SETTING];
vfo.SCRAMBLING_TYPE = payload->scrambling_type;
vfo.Band = payload->band;
vfo.SCANLIST_PARTICIPATION = payload->scanlist;
vfo.Compander = payload->compander;
memcpy(vfo.Name, payload->name, sizeof(vfo.Name));
vfo.Name[sizeof(vfo.Name) - 1] = '\0';
RADIO_ApplyOffset(&vfo);
RADIO_ConfigureSquelchAndOutputPower(&vfo);
SETTINGS_SaveChannel(channel, gEeprom.TX_VFO, &vfo, 3);
SETTINGS_SaveChannelName(channel, vfo.Name);
gBeamCopiedChannel = channel;
gBeamStatus = BEAM_STATUS_RX_SAVED;
gUpdateDisplay = true;
BACKLIGHT_TurnOn();
return;
}
static void BEAM_KeyMenu(void)
{
BEAM_SetRadioToBeamFrequency();
if (gBeamMode == BEAM_MODE_TX) {
BEAM_SendPacket();
} else {
gBeamStatus = BEAM_STATUS_RX_WAIT;
gBeamCopiedChannel = 0xFFFFu;
gBeamRxWordCount = 0;
gFSKWriteIndex = 0;
BK4819_PrepareFSKReceive();
}
}
static void BEAM_KeyExit(void)
{
BK4819_ResetFSK();
if (gBeamMode == BEAM_MODE_RX && gBeamCopiedChannel != 0xFFFFu) {
gEeprom.MrChannel[gEeprom.TX_VFO] = gBeamCopiedChannel;
gEeprom.ScreenChannel[gEeprom.TX_VFO] = gBeamCopiedChannel;
RADIO_ConfigureChannel(gEeprom.TX_VFO, VFO_CONFIGURE_RELOAD);
}
RADIO_SelectVfos();
RADIO_SetupRegisters(true);
GUI_SelectNextDisplay(DISPLAY_MAIN);
gBeamActive = false;
}
void ACTION_Beam(void)
{
gBeamMode = BEAM_MODE_TX;
gBeamStatus = BEAM_STATUS_READY;
gBeamCopiedChannel = 0xFFFFu;
gBeamRxWordCount = 0;
gBeamActive = true;
GUI_SelectNextDisplay(DISPLAY_MAIN);
}
void BEAM_ProcessKeys(KEY_Code_t Key, bool bKeyPressed, bool bKeyHeld)
{
if (bKeyHeld || !bKeyPressed)
return;
if (Key != KEY_PTT)
gBeepToPlay = BEEP_1KHZ_60MS_OPTIONAL;
switch (Key) {
case KEY_UP:
case KEY_DOWN:
gBeamMode ^= 1; // (gBeamMode == BEAM_MODE_TX) ? BEAM_MODE_RX : BEAM_MODE_TX
gBeamStatus = BEAM_STATUS_READY;
gBeamRxWordCount = 0;
break;
case KEY_MENU:
BEAM_KeyMenu();
break;
case KEY_EXIT:
BEAM_KeyExit();
return;
case KEY_PTT:
break;
default:
gBeepToPlay = BEEP_500HZ_60MS_DOUBLE_BEEP_OPTIONAL;
break;
}
gUpdateDisplay = true;
}
void BEAM_StorePacket(void)
{
if (gFSKWriteIndex < 36)
return;
gBeamRxWordCount = gFSKWriteIndex;
gFSKWriteIndex = 0;
const uint16_t Status = BK4819_ReadRegister(BK4819_REG_0B);
BK4819_PrepareFSKReceive();
if ((Status & 0x0010U) != 0 || g_FSK_Buffer[0] != 0xABCDu || g_FSK_Buffer[35] != 0xDCBAu)
goto error;
AIRCOPY_Obfuscate(32);
if (g_FSK_Buffer[34] != CRC_Calculate(&g_FSK_Buffer[1], 2 + 64))
goto error;
BEAM_Payload_t * const payload = (BEAM_Payload_t *)&g_FSK_Buffer[2];
if (payload->magic != BEAM_PACKET_MAGIC || payload->version != BEAM_PACKET_VERSION)
goto error;
BEAM_SavePayloadToFirstFreeChannel(payload);
BK4819_ResetFSK();
return;
error:
gBeamStatus = BEAM_STATUS_ERROR;
gBeamRxWordCount = 0;
gUpdateDisplay = true;
BACKLIGHT_TurnOn();
}
#endif // ENABLE_FEAT_F4HWN_BEAM