/* 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 <stdlib.h>  // abs()

#include "app/dtmf.h"
#include "bitmaps.h"
#include "board.h"
#include "dcs.h"
#include "driver/backlight.h"
#include "driver/bk4819.h"
#include "driver/eeprom.h"   // EEPROM_ReadBuffer()
#include "driver/st7565.h"
#include "external/printf/printf.h"
#include "frequencies.h"
#include "helper/battery.h"
#include "misc.h"
#include "settings.h"
#include "ui/helper.h"
#include "ui/inputbox.h"
#include "ui/menu.h"
#include "ui/ui.h"

// NOTE. this menu list is half way through a change, what might seem
// pointless at this time is for there for a reason.
//
const t_menu_item MenuList[] =
{
//   text,     voice ID,                               menu ID

	{"SQL",    VOICE_ID_SQUELCH,                       MENU_SQL        },
	{"STEP",   VOICE_ID_FREQUENCY_STEP,                MENU_STEP       },
	{"T-PWR",  VOICE_ID_POWER,                         MENU_TXP        }, // was "TXP"
	{"R-DCS",  VOICE_ID_DCS,                           MENU_R_DCS      }, // was "R_DCS"
	{"R-CTCS", VOICE_ID_CTCSS,                         MENU_R_CTCS     }, // was "R_CTCS"
	{"T-DCS",  VOICE_ID_DCS,                           MENU_T_DCS      }, // was "T_DCS"
	{"T-CTCS", VOICE_ID_CTCSS,                         MENU_T_CTCS     }, // was "T_CTCS"
	{"T-DIR",  VOICE_ID_TX_OFFSET_FREQUENCY_DIRECTION, MENU_SFT_D      }, // was "SFT_D"
	{"T-OFFS", VOICE_ID_TX_OFFSET_FREQUENCY,           MENU_OFFSET     }, // was "OFFSET"
	{"T-VFO",  VOICE_ID_INVALID,                       MENU_XB         }, // was "WX"
	{"T-TOUT", VOICE_ID_TRANSMIT_OVER_TIME,            MENU_TOT        }, // was "TOT"
	{"W/N",    VOICE_ID_CHANNEL_BANDWIDTH,             MENU_W_N        },
	{"SCRAM",  VOICE_ID_SCRAMBLER_ON,                  MENU_SCR        }, // was "SCR"
	{"BUSYCL", VOICE_ID_BUSY_LOCKOUT,                  MENU_BCL        }, // was "BCL"
	{"CH-SAV", VOICE_ID_MEMORY_CHANNEL,                MENU_MEM_CH     }, // was "MEM-CH"
	{"CH-DEL", VOICE_ID_DELETE_CHANNEL,                MENU_DEL_CH     }, // was "DEL-CH"
	{"CH-NAM", VOICE_ID_INVALID,                       MENU_MEM_NAME   },
	{"CH-DIS", VOICE_ID_INVALID,                       MENU_MDF        }, // was "MDF"
	{"BATSAV", VOICE_ID_SAVE_MODE,                     MENU_SAVE       }, // was "SAVE"
	{"VOX",    VOICE_ID_VOX,                           MENU_VOX        },
	{"BACKLT", VOICE_ID_INVALID,                       MENU_ABR        }, // was "ABR"
	{"DUALRX", VOICE_ID_DUAL_STANDBY,                  MENU_TDR        }, // was "TDR"
	{"BEEP",   VOICE_ID_BEEP_PROMPT,                   MENU_BEEP       },
#ifdef ENABLE_VOICE
	{"VOICE",  VOICE_ID_VOICE_PROMPT,                  MENU_VOICE      },
#endif
	{"SC-REV", VOICE_ID_INVALID,                       MENU_SC_REV     },
	{"KEYLOC", VOICE_ID_INVALID,                       MENU_AUTOLK     }, // was "AUTOLk"
	{"S-ADD1", VOICE_ID_INVALID,                       MENU_S_ADD1     },
	{"S-ADD2", VOICE_ID_INVALID,                       MENU_S_ADD2     },
	{"STE",    VOICE_ID_INVALID,                       MENU_STE        },
	{"RP-STE", VOICE_ID_INVALID,                       MENU_RP_STE     },
	{"MIC",    VOICE_ID_INVALID,                       MENU_MIC        },
#ifdef ENABLE_AUDIO_BAR
	{"MICBAR", VOICE_ID_INVALID,                       MENU_MIC_BAR    },
#endif
#ifdef ENABLE_COMPANDER
	{"COMPND", VOICE_ID_INVALID,                       MENU_COMPAND    },
#endif
	{"1-CALL", VOICE_ID_INVALID,                       MENU_1_CALL     },
	{"SLIST",  VOICE_ID_INVALID,                       MENU_S_LIST     },
	{"SLIST1", VOICE_ID_INVALID,                       MENU_SLIST1     },
	{"SLIST2", VOICE_ID_INVALID,                       MENU_SLIST2     },
#ifdef ENABLE_ALARM
	{"AL-MOD", VOICE_ID_INVALID,                       MENU_AL_MOD     },
#endif
	{"ANI-ID", VOICE_ID_ANI_CODE,                      MENU_ANI_ID     },
	{"UPCODE", VOICE_ID_INVALID,                       MENU_UPCODE     },
	{"DWCODE", VOICE_ID_INVALID,                       MENU_DWCODE     },
	{"D-ST",   VOICE_ID_INVALID,                       MENU_D_ST       },
    {"D-RSP",  VOICE_ID_INVALID,                       MENU_D_RSP      },
	{"D-HOLD", VOICE_ID_INVALID,                       MENU_D_HOLD     },
	{"D-PRE",  VOICE_ID_INVALID,                       MENU_D_PRE      },
	{"PTT-ID", VOICE_ID_INVALID,                       MENU_PTT_ID     },
	{"D-DCD",  VOICE_ID_INVALID,                       MENU_D_DCD      },
	{"D-LIST", VOICE_ID_INVALID,                       MENU_D_LIST     },
	{"D-LIVE", VOICE_ID_INVALID,                       MENU_D_LIVE_DEC }, // live DTMF decoder
	{"PONMSG", VOICE_ID_INVALID,                       MENU_PONMSG     },
	{"ROGER",  VOICE_ID_INVALID,                       MENU_ROGER      },
	{"BATVOL", VOICE_ID_INVALID,                       MENU_VOL        }, // was "VOL"
	{"BATTXT", VOICE_ID_INVALID,                       MENU_BAT_TXT    },
	{"MODE",   VOICE_ID_INVALID,                       MENU_AM         }, // was "AM"
#ifdef ENABLE_AM_FIX
	{"AM-FIX", VOICE_ID_INVALID,                       MENU_AM_FIX     },
#endif
#ifdef ENABLE_AM_FIX_TEST1
	{"AM-FT1", VOICE_ID_INVALID,                       MENU_AM_FIX_TEST1},
#endif
#ifdef ENABLE_NOAA
	{"NOAA-S", VOICE_ID_INVALID,                       MENU_NOAA_S     },
#endif
	{"RESET",  VOICE_ID_INITIALISATION,                MENU_RESET      }, // might be better to move this to the hidden menu items ?

	// hidden menu items from here on
	// enabled if pressing both the PTT and upper side button at power-on

	{"F-LOCK", VOICE_ID_INVALID,                       MENU_F_LOCK     },
	{"TX-200", VOICE_ID_INVALID,                       MENU_200TX      }, // was "200TX"
	{"TX-350", VOICE_ID_INVALID,                       MENU_350TX      }, // was "350TX"
	{"TX-500", VOICE_ID_INVALID,                       MENU_500TX      }, // was "500TX"
	{"350-EN", VOICE_ID_INVALID,                       MENU_350EN      }, // was "350EN"
	{"SCR-EN", VOICE_ID_INVALID,                       MENU_SCREN      }, // was "SCREN"

	{"TX-EN",  VOICE_ID_INVALID,                       MENU_TX_EN      }, // enable TX
	{"F-CALI", VOICE_ID_INVALID,                       MENU_F_CALI     }, // reference xtal calibration

	{"",       VOICE_ID_INVALID,                       0xff            }  // end of list - DO NOT delete or move this this
};

const char gSubMenu_TXP[3][5] =
{
	"LOW",
	"MID",
	"HIGH"
};

const char gSubMenu_SFT_D[3][4] =
{
	"OFF",
	"+",
	"-"
};

const char gSubMenu_W_N[2][7] =
{
	"WIDE",
	"NARROW"
};

const char gSubMenu_OFF_ON[2][4] =
{
	"OFF",
	"ON"
};

const char gSubMenu_SAVE[5][4] =
{
	"OFF",
	"1:1",
	"1:2",
	"1:3",
	"1:4"
};

const char gSubMenu_TOT[11][7] =
{
	"OFF",
	"30 sec",
	"1 min",
	"2 min",
	"3 min",
	"4 min",
	"5 min",
	"6 min",
	"7 min",
	"8 min",
	"9 min"
};

const char gSubMenu_CHAN[3][7] =
{
	"OFF",
	"CHAN A",
	"CHAN B"
};

const char gSubMenu_XB[3][7] =
{
	"SAME",
	"CHAN A",
	"CHAN B"
};

#ifdef ENABLE_VOICE
	const char gSubMenu_VOICE[3][4] =
	{
		"OFF",
		"CHI",
		"ENG"
	};
#endif

const char gSubMenu_SC_REV[3][3] =
{
	"TO",
	"CO",
	"SE"
};

const char gSubMenu_MDF[4][8] =
{
	"FREQ",
	"CHAN",
	"NAME",
	"NAM+FRE"
};

#ifdef ENABLE_ALARM
	const char gSubMenu_AL_MOD[2][5] =
	{
		"SITE",
		"TONE"
	};
#endif

const char gSubMenu_D_RSP[4][6] =
{
	"NULL",
	"RING",
	"REPLY",
	"BOTH"
};

const char gSubMenu_PTT_ID[4][5] =
{
	"OFF",
	"BOT",
	"EOT",
	"BOTH"
};

const char gSubMenu_PONMSG[4][5] =
{
	"FULL",
	"MSG",
	"VOL",
	"NONE"
};

const char gSubMenu_ROGER[3][6] =
{
	"OFF",
	"ROGER",
	"MDC"
};

const char gSubMenu_RESET[2][4] =
{
	"VFO",
	"ALL"
};

const char gSubMenu_F_LOCK[6][4] =
{
	"OFF",
	"FCC",
	"CE",
	"GB",
	"430",
	"438"
};

const char gSubMenu_BACKLIGHT[8][7] =
{
	"OFF",
	"5 sec",
	"10 sec",
	"20 sec",
	"1 min",
	"2 min",
	"4 min",
	"ON"
};

#ifdef ENABLE_COMPANDER
	const char gSubMenu_Compand[4][6] =
	{
		"OFF",
		"TX",
		"RX",
		"TX/RX"
	};
#endif

#ifdef ENABLE_AM_FIX_TEST1
	const char gSubMenu_AM_fix_test1[4][8] =
	{
		"LNA-S 0",
		"LNA-S 1",
		"LNA-S 2",
		"LNA-S 3"
	};
#endif

const char gSubMenu_BAT_TXT[3][8] =
{
	"NONE",
	"VOLTAGE",
	"PERCENT"
};

const char gSubMenu_SCRAMBLER[11][7] =
{
	"OFF",
	"2600Hz",
	"2700Hz",
	"2800Hz",
	"2900Hz",
	"3000Hz",
	"3100Hz",
	"3200Hz",
	"3300Hz",
	"3400Hz",
	"3500Hz"
};

bool    gIsInSubMenu;
uint8_t gMenuCursor;
int8_t  gMenuScrollDirection;
int32_t gSubMenuSelection;

// edit box
char    edit_original[17]; // a copy of the text before editing so that we can easily test for changes/difference
char    edit[17];
int     edit_index;

void UI_DisplayMenu(void)
{
	const unsigned int menu_list_width = 6; // max no. of characters on the menu list (left side)
	const unsigned int menu_item_x1    = (8 * menu_list_width) + 2;
	const unsigned int menu_item_x2    = LCD_WIDTH - 1;
	unsigned int       i;
	char               String[16];
	char               Contact[16];

	memset(gFrameBuffer, 0, sizeof(gFrameBuffer));

	for (i = 0; i < 3; i++)
		if (gMenuCursor > 0 || i > 0)
			if ((gMenuListCount - 1) != gMenuCursor || i != 2)
				UI_PrintString(MenuList[gMenuCursor + i - 1].name, 0, 0, i * 2, 8);

	// invert the menu list text pixels
	for (i = 0; i < (8 * menu_list_width); i++)
	{
		gFrameBuffer[2][i] ^= 0xFF;
		gFrameBuffer[3][i] ^= 0xFF;
	}

	// draw vertical separating dotted line
	for (i = 0; i < 7; i++)
		gFrameBuffer[i][(8 * menu_list_width) + 1] = 0xAA;

	// draw the menu index number/count
	sprintf(String, "%2u.%u", 1 + gMenuCursor, gMenuListCount);
	UI_PrintStringSmall(String, 8, 0, 6);

	// draw the little marker
	if (gIsInSubMenu)
		memmove(gFrameBuffer[0] + (8 * menu_list_width) + 1, BITMAP_CurrentIndicator, sizeof(BITMAP_CurrentIndicator));

	memset(String, 0, sizeof(String));

	bool already_printed = false;

	switch (gMenuCursor)
	{
		case MENU_SQL:
			sprintf(String, "%d", gSubMenuSelection);
			break;

		case MENU_MIC:
			{	// display the mic gain in actual dB rather than just an index number
				const uint8_t mic = gMicGain_dB2[gSubMenuSelection];
				sprintf(String, "+%u.%01udB", mic / 2, mic % 2);
			}
			break;

		#ifdef ENABLE_AUDIO_BAR
			case MENU_MIC_BAR:
				strcpy(String, gSubMenu_OFF_ON[gSubMenuSelection]);
				break;
		#endif

		case MENU_STEP:
			sprintf(String, "%d.%02uKHz", StepFrequencyTable[gSubMenuSelection] / 100, abs(StepFrequencyTable[gSubMenuSelection]) % 100);
			break;

		case MENU_TXP:
			strcpy(String, gSubMenu_TXP[gSubMenuSelection]);
			break;

		case MENU_R_DCS:
		case MENU_T_DCS:
			if (gSubMenuSelection == 0)
				strcpy(String, "OFF");
			else
			if (gSubMenuSelection < 105)
				sprintf(String, "D%03oN", DCS_Options[gSubMenuSelection -   1]);
			else
				sprintf(String, "D%03oI", DCS_Options[gSubMenuSelection - 105]);
			break;

		case MENU_R_CTCS:
		case MENU_T_CTCS:
			if (gSubMenuSelection == 0)
				strcpy(String, "OFF");
			else
				sprintf(String, "%u.%uHz", CTCSS_Options[gSubMenuSelection - 1] / 10, CTCSS_Options[gSubMenuSelection - 1] % 10);
			break;

		case MENU_SFT_D:
			strcpy(String, gSubMenu_SFT_D[gSubMenuSelection]);
			break;

		case MENU_OFFSET:
			if (!gIsInSubMenu || gInputBoxIndex == 0)
			{
				sprintf(String, "%d.%05u", gSubMenuSelection / 100000, abs(gSubMenuSelection) % 100000);
				UI_PrintString(String, menu_item_x1, menu_item_x2, 1, 8);
			}
			else
			{
				for (i = 0; i < 3; i++)
					String[i    ] = (gInputBox[i] == 10) ? '-' : gInputBox[i] + '0';
				String[3] = '.';
				for (i = 3; i < 6; i++)
					String[i + 1] = (gInputBox[i] == 10) ? '-' : gInputBox[i] + '0';
				String[ 7] = '-';
				String[ 8] = '-';
				String[ 9] = 0;
				String[10] = 0;
				String[11] = 0;
				UI_PrintString(String, menu_item_x1, menu_item_x2, 1, 8);
			}

			UI_PrintString("MHz",  menu_item_x1, menu_item_x2, 3, 8);

			already_printed = true;
			break;

		case MENU_W_N:
			strcpy(String, gSubMenu_W_N[gSubMenuSelection]);
			break;

		case MENU_SCR:
			strcpy(String, gSubMenu_SCRAMBLER[gSubMenuSelection]);
			break;

		case MENU_VOX:
			if (gSubMenuSelection == 0)
				strcpy(String, "OFF");
			else
				sprintf(String, "%d", gSubMenuSelection);
			break;

		case MENU_ABR:
			strcpy(String, gSubMenu_BACKLIGHT[gSubMenuSelection]);
			break;

		case MENU_AM:
			strcpy(String, (gSubMenuSelection == 0) ? "FM" : "AM");
			break;

		#ifdef ENABLE_AM_FIX_TEST1
			case MENU_AM_FIX_TEST1:
				strcpy(String, gSubMenu_AM_fix_test1[gSubMenuSelection]);
				break;
		#endif

		case MENU_AUTOLK:
			strcpy(String, (gSubMenuSelection == 0) ? "OFF" : "AUTO");
			break;

		#ifdef ENABLE_COMPANDER
			case MENU_COMPAND:
				strcpy(String, gSubMenu_Compand[gSubMenuSelection]);
				break;
		#endif

		#ifdef ENABLE_AM_FIX
			case MENU_AM_FIX:
		#endif
		case MENU_BCL:
		case MENU_BEEP:
		case MENU_S_ADD1:
		case MENU_S_ADD2:
		case MENU_STE:
		case MENU_D_ST:
		case MENU_D_DCD:
		case MENU_D_LIVE_DEC:
		#ifdef ENABLE_NOAA
			case MENU_NOAA_S:
		#endif
		case MENU_350TX:
		case MENU_200TX:
		case MENU_500TX:
		case MENU_350EN:
		case MENU_SCREN:
		case MENU_TX_EN:
			strcpy(String, gSubMenu_OFF_ON[gSubMenuSelection]);
			break;

		case MENU_MEM_CH:
		case MENU_1_CALL:
		case MENU_DEL_CH:
		{
			const bool valid = RADIO_CheckValidChannel(gSubMenuSelection, false, 0);

			UI_GenerateChannelStringEx(String, valid, gSubMenuSelection);
			UI_PrintString(String, menu_item_x1, menu_item_x2, 0, 8);

			if (valid && !gAskForConfirmation)
			{	// show the frequency so that the user knows the channels frequency
				const uint32_t frequency = BOARD_fetchChannelFrequency(gSubMenuSelection);
				sprintf(String, "%u.%05u", frequency / 100000, frequency % 100000);
				UI_PrintString(String, menu_item_x1, menu_item_x2, 4, 8);
//				UI_PrintStringSmall(String, menu_item_x1, menu_item_x2, 5);
			}

			already_printed = true;
			break;
		}

		case MENU_MEM_NAME:
		{
			const bool valid = RADIO_CheckValidChannel(gSubMenuSelection, false, 0);

			UI_GenerateChannelStringEx(String, valid, gSubMenuSelection);
			UI_PrintString(String, menu_item_x1, menu_item_x2, 0, 8);

			if (valid)
			{
				const uint32_t frequency = BOARD_fetchChannelFrequency(gSubMenuSelection);

				if (!gIsInSubMenu || edit_index < 0)
				{	// show the channel name
					BOARD_fetchChannelName(String, gSubMenuSelection);
					if (String[0] == 0)
						strcpy(String, "--");
					UI_PrintString(String, menu_item_x1, menu_item_x2, 2, 8);
				}
				else
				{	// show the channel name being edited
					UI_PrintString(edit, menu_item_x1, 0, 2, 8);
					if (edit_index < 10)
						UI_PrintString(     "^", menu_item_x1 + (8 * edit_index), 0, 4, 8);  // show the cursor
//						UI_PrintStringSmall("^", menu_item_x1 + (8 * edit_index), 0, 4);
				}

				if (!gAskForConfirmation)
				{	// show the frequency so that the user knows the channels frequency
					sprintf(String, "%u.%05u", frequency / 100000, frequency % 100000);
					if (!gIsInSubMenu || edit_index < 0)
						UI_PrintString(String, menu_item_x1, menu_item_x2, 4, 8);
					else
						UI_PrintString(String, menu_item_x1, menu_item_x2, 5, 8);
//						UI_PrintStringSmall(String, menu_item_x1, menu_item_x2, 5);
				}
			}

			already_printed = true;
			break;
		}

		case MENU_SAVE:
			strcpy(String, gSubMenu_SAVE[gSubMenuSelection]);
			break;

		case MENU_TDR:
			strcpy(String, gSubMenu_CHAN[gSubMenuSelection]);
			break;

		case MENU_XB:
			strcpy(String, gSubMenu_XB[gSubMenuSelection]);
			break;

		case MENU_TOT:
			strcpy(String, gSubMenu_TOT[gSubMenuSelection]);
			break;

		#ifdef ENABLE_VOICE
			case MENU_VOICE:
				strcpy(String, gSubMenu_VOICE[gSubMenuSelection]);
				break;
		#endif

		case MENU_SC_REV:
			strcpy(String, gSubMenu_SC_REV[gSubMenuSelection]);
			break;

		case MENU_MDF:
			strcpy(String, gSubMenu_MDF[gSubMenuSelection]);
			break;

		case MENU_RP_STE:
			if (gSubMenuSelection == 0)
				strcpy(String, "OFF");
			else
				sprintf(String, "%d*100ms", gSubMenuSelection);
			break;

		case MENU_S_LIST:
			sprintf(String, "LIST%u", gSubMenuSelection);
			break;

		#ifdef ENABLE_ALARM
			case MENU_AL_MOD:
				sprintf(String, gSubMenu_AL_MOD[gSubMenuSelection]);
				break;
		#endif

		case MENU_ANI_ID:
			strcpy(String, gEeprom.ANI_DTMF_ID);
			break;

		case MENU_UPCODE:
			strcpy(String, gEeprom.DTMF_UP_CODE);
			break;

		case MENU_DWCODE:
			strcpy(String, gEeprom.DTMF_DOWN_CODE);
			break;

		case MENU_D_RSP:
			strcpy(String, gSubMenu_D_RSP[gSubMenuSelection]);
			break;

		case MENU_D_HOLD:
			sprintf(String, "%ds", gSubMenuSelection);
			break;

		case MENU_D_PRE:
			sprintf(String, "%d*10ms", gSubMenuSelection);
			break;

		case MENU_PTT_ID:
			strcpy(String, gSubMenu_PTT_ID[gSubMenuSelection]);
			break;

		case MENU_BAT_TXT:
			strcpy(String, gSubMenu_BAT_TXT[gSubMenuSelection]);
			break;

		case MENU_D_LIST:
			gIsDtmfContactValid = DTMF_GetContact((int)gSubMenuSelection - 1, Contact);
			if (!gIsDtmfContactValid)
				strcpy(String, "NULL");
			else
				memmove(String, Contact, 8);
			break;

		case MENU_PONMSG:
			strcpy(String, gSubMenu_PONMSG[gSubMenuSelection]);
			break;

		case MENU_ROGER:
			strcpy(String, gSubMenu_ROGER[gSubMenuSelection]);
			break;

		case MENU_VOL:
			// 1st text line
			sprintf(String, "%u.%02uV", gBatteryVoltageAverage / 100, gBatteryVoltageAverage % 100);
			UI_PrintString(String, menu_item_x1, menu_item_x2, 1, 8);

			{	// 2nd text line .. percentage
				UI_PrintString(String, menu_item_x1, menu_item_x2, 1, 8);
				const uint16_t volts   = (gBatteryVoltageAverage < gMin_bat_v) ? gMin_bat_v : gBatteryVoltageAverage;
				const uint16_t percent = (100 * (volts - gMin_bat_v)) / (gMax_bat_v - gMin_bat_v);
				sprintf(String, "%u%%", percent);
				UI_PrintString(String, menu_item_x1, menu_item_x2, 3, 8);
				#if 0
					sprintf(String, "Curr %u", gBatteryCurrent);  // needs scaling into mA
					UI_PrintString(String, menu_item_x1, menu_item_x2, 5, 8);
				#endif
			}

			already_printed = true;
			break;

		case MENU_RESET:
			strcpy(String, gSubMenu_RESET[gSubMenuSelection]);
			break;

		case MENU_F_LOCK:
			strcpy(String, gSubMenu_F_LOCK[gSubMenuSelection]);
			break;

		case MENU_F_CALI:
			{
				const uint32_t value = 22656 + gSubMenuSelection;
				//gEeprom.BK4819_XTAL_FREQ_LOW = gSubMenuSelection;  // already set when the user was adjusting the value
				BK4819_WriteRegister(BK4819_REG_3B, value);

				sprintf(String, "%d", gSubMenuSelection);
				UI_PrintString(String, menu_item_x1, menu_item_x2, 0, 8);

				const uint32_t xtal_Hz = (0x4f0000u + value) * 5;
				sprintf(String, "%u.%06u", xtal_Hz / 1000000, xtal_Hz % 1000000);
				UI_PrintString(String, menu_item_x1, menu_item_x2, 2, 8);

				UI_PrintString("MHz",  menu_item_x1, menu_item_x2, 4, 8);

				already_printed = true;
			}
			break;
	}

	if (!already_printed)
		UI_PrintString(String, menu_item_x1, menu_item_x2, 2, 8);

	if (gMenuCursor == MENU_SLIST1 || gMenuCursor == MENU_SLIST2)
	{
		i = (gMenuCursor == MENU_SLIST1) ? 0 : 1;

//		if (gSubMenuSelection == 0xFF)
		if (gSubMenuSelection < 0)
			strcpy(String, "NULL");
		else
			UI_GenerateChannelStringEx(String, true, gSubMenuSelection);

//		if (gSubMenuSelection == 0xFF || !gEeprom.SCAN_LIST_ENABLED[i])
		if (gSubMenuSelection < 0 || !gEeprom.SCAN_LIST_ENABLED[i])
		{
			// channel number
			UI_PrintString(String, menu_item_x1, menu_item_x2, 0, 8);

			// channel name
			BOARD_fetchChannelName(String, gSubMenuSelection);
			if (String[0] == 0)
				strcpy(String, "--");
			UI_PrintString(String, menu_item_x1, menu_item_x2, 2, 8);
		}
		else
		{
			// channel number
			UI_PrintString(String, menu_item_x1, menu_item_x2, 0, 8);

			// channel name
			BOARD_fetchChannelName(String, gSubMenuSelection);
			if (String[0] == 0)
				strcpy(String, "--");
			UI_PrintStringSmall(String, menu_item_x1, menu_item_x2, 2);

			if (IS_MR_CHANNEL(gEeprom.SCANLIST_PRIORITY_CH1[i]))
			{
				sprintf(String, "PRI1:%u", gEeprom.SCANLIST_PRIORITY_CH1[i] + 1);
				UI_PrintString(String, menu_item_x1, menu_item_x2, 3, 8);
			}

			if (IS_MR_CHANNEL(gEeprom.SCANLIST_PRIORITY_CH2[i]))
			{
				sprintf(String, "PRI2:%u", gEeprom.SCANLIST_PRIORITY_CH2[i] + 1);
				UI_PrintString(String, menu_item_x1, menu_item_x2, 5, 8);
			}
		}
	}

	if (gMenuCursor == MENU_MEM_CH   ||
	    gMenuCursor == MENU_DEL_CH   ||
	    gMenuCursor == MENU_1_CALL)
	{	// display the channel name
		char s[11];
		BOARD_fetchChannelName(s, gSubMenuSelection);
		if (s[0] == 0)
			strcpy(s, "--");
		UI_PrintString(s, menu_item_x1, menu_item_x2, 2, 8);
	}

	if ((gMenuCursor == MENU_R_CTCS || gMenuCursor == MENU_R_DCS) && gCssScanMode != CSS_SCAN_MODE_OFF)
		UI_PrintString("SCAN", menu_item_x1, menu_item_x2, 4, 8);

	if (gMenuCursor == MENU_UPCODE)
		if (strlen(gEeprom.DTMF_UP_CODE) > 8)
			UI_PrintString(gEeprom.DTMF_UP_CODE + 8, menu_item_x1, menu_item_x2, 4, 8);

	if (gMenuCursor == MENU_DWCODE)
		if (strlen(gEeprom.DTMF_DOWN_CODE) > 8)
			UI_PrintString(gEeprom.DTMF_DOWN_CODE + 8, menu_item_x1, menu_item_x2, 4, 8);

	if (gMenuCursor == MENU_D_LIST && gIsDtmfContactValid)
	{
		Contact[11] = 0;
		memmove(&gDTMF_ID, Contact + 8, 4);
		sprintf(String, "ID:%s", Contact + 8);
		UI_PrintString(String, menu_item_x1, menu_item_x2, 4, 8);
	}

	if (gMenuCursor == MENU_R_CTCS ||
	    gMenuCursor == MENU_T_CTCS ||
	    gMenuCursor == MENU_R_DCS  ||
	    gMenuCursor == MENU_T_DCS  ||
	    gMenuCursor == MENU_D_LIST)
	{
		unsigned int Offset;
		NUMBER_ToDigits(gSubMenuSelection, String);
		Offset = (gMenuCursor == MENU_D_LIST) ? 2 : 3;
		UI_DisplaySmallDigits(Offset, String + (8 - Offset), 105, 0, false);
	}

	if ((gMenuCursor == MENU_RESET    ||
	     gMenuCursor == MENU_MEM_CH   ||
	     gMenuCursor == MENU_MEM_NAME ||
	     gMenuCursor == MENU_DEL_CH) && gAskForConfirmation)
	{	// display confirmation
		strcpy(String, (gAskForConfirmation == 1) ? "SURE?" : "WAIT!");
		UI_PrintString(String, menu_item_x1, menu_item_x2, 5, 8);
	}

	ST7565_BlitFullScreen();
}
