/* 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 <stdbool.h>
#include <string.h>
#include "ARMCM0.h"

#include "app.h"
#include "audio.h"
#include "battery.h"
#include "bsp/dp32g030/gpio.h"
#include "bsp/dp32g030/portcon.h"
#include "bsp/dp32g030/syscon.h"
#include "board.h"
#include "driver/backlight.h"
#include "driver/bk1080.h"
#include "driver/bk4819.h"
#include "driver/crc.h"
#include "driver/eeprom.h"
#include "driver/flash.h"
#include "driver/gpio.h"
#include "driver/keyboard.h"
#include "driver/st7565.h"
#include "driver/system.h"
#include "driver/systick.h"
#include "driver/uart.h"
#include "dtmf.h"
#include "external/printf/printf.h"
#include "functions.h"
#include "gui.h"
#include "helper.h"
#include "misc.h"
#include "radio.h"
#include "settings.h"

//#define USE_REAL_MAIN

static const char Version[] = "UV-K5 Firmware, v0.01 Open Edition\r\n";

#if !defined(USE_REAL_MAIN)
static void FLASHLIGHT_Init(void)
{
	PORTCON_PORTC_IE = PORTCON_PORTC_IE_C5_BITS_ENABLE;
	PORTCON_PORTC_PU = PORTCON_PORTC_PU_C5_BITS_ENABLE;
	GPIOC->DIR |= GPIO_DIR_3_BITS_OUTPUT;

	GPIO_SetBit(&GPIOC->DATA, 10);
	GPIO_SetBit(&GPIOC->DATA, 11);
	GPIO_SetBit(&GPIOC->DATA, 12);
	GPIO_SetBit(&GPIOC->DATA, 13);
}

static void FLASHLIGHT_TurnOff(void)
{
	GPIO_ClearBit(&GPIOC->DATA, GPIOC_PIN_FLASHLIGHT);
}

static void FLASHLIGHT_TurnOn(void)
{
	GPIO_SetBit(&GPIOC->DATA, GPIOC_PIN_FLASHLIGHT);
}
#endif

void _putchar(char c)
{
	UART_Send((uint8_t *)&c, 1);
}

void Main(void)
{
	uint8_t i;

	// Enable clock gating of blocks we need.
	SYSCON_DEV_CLK_GATE = 0
		| SYSCON_DEV_CLK_GATE_GPIOA_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_GPIOB_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_GPIOC_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_UART1_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_SPI0_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_SARADC_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_CRC_BITS_ENABLE
		| SYSCON_DEV_CLK_GATE_AES_BITS_ENABLE
		;

	SYSTICK_Init();
	BOARD_Init();

	UART_Init();
	UART_Send(Version, sizeof(Version));

	// Not implementing authentic device checks

	memset(&gEeprom, 0, sizeof(gEeprom));
	memset(gDTMF_String, '-', sizeof(gDTMF_String));
	gDTMF_String[14] = 0;

	BK4819_Init();
	BOARD_ADC_GetBatteryInfo(&gBatteryCurrentVoltage, &gBatteryCurrent);
	BOARD_EEPROM_Init();
	BOARD_EEPROM_LoadMoreSettings();

	RADIO_ConfigureChannel(0, 2);
	RADIO_ConfigureChannel(1, 2);
	RADIO_ConfigureTX();
	RADIO_SetupRegisters(true);

	for (i = 0; i < 4; i++) {
		BOARD_ADC_GetBatteryInfo(&gBatteryVoltages[i], &gBatteryCurrent);
	}

	BATTERY_GetReadings(false);
	if (!gChargingWithTypeC && !gBatteryDisplayLevel) {
		FUNCTION_Select(FUNCTION_POWER_SAVE);
		GPIO_ClearBit(&GPIOB->DATA, GPIOB_PIN_BACKLIGHT);
		g_2000037E = 1;
	} else {
		uint8_t KeyType;
		uint8_t Channel;

		GUI_Welcome();
		BACKLIGHT_TurnOn();
		SYSTEM_DelayMs(1000);
		gMenuListCount = 51;

		HELPER_GetKey();
		KeyType = HELPER_GetKey();
		if (gEeprom.POWER_ON_PASSWORD < 1000000) {
			g_2000036E = 1;
			GUI_PasswordScreen();
			g_2000036E = 0;
		}

		HELPER_CheckBootKey(KeyType);

		GPIO_ClearBit(&GPIOA->DATA, 12);
		g_2000036F = 1;
		AUDIO_SetVoiceID(0, VOICE_ID_WELCOME);
		Channel = gEeprom.VfoChannel[gEeprom.TX_CHANNEL] + 1;
		if (Channel < 201) {
			AUDIO_SetVoiceID(1, VOICE_ID_CHANNEL_MODE);
			AUDIO_SetDigitVoice(2, Channel);
		} else if ((Channel - 201) < 7) {
			AUDIO_SetVoiceID(1, VOICE_ID_FREQUENCY_MODE);
		}
		AUDIO_PlaySingleVoice(0);
		RADIO_ConfigureNOAA();
	}

#if defined(USE_REAL_MAIN)
	while (1) {
		APP_Update();
		if (gNextTimeslice) {
			APP_TimeSlice10ms();
			gNextTimeslice = false;
		}
		if (gNextTimeslice500ms) {
			APP_TimeSlice500ms();
			gNextTimeslice500ms = false;
		}
	}
#else

	// Below this line is development/test area not conforming to the original firmware

	// Show some signs of life
	FLASHLIGHT_Init();

	bool Open = false;
	uint8_t Flag = false;
	while (1) {
		uint16_t RSSI = BK4819_GetRSSI();
		if (RSSI >= 0x100) {
			if (!Open) {
				BK4819_WriteRegister(BK4819_REG_48, 0
						| (gEeprom.VOLUME_GAIN << 4)
						| gEeprom.DAC_GAIN
						);
				BK4819_SetAF(BK4819_AF_OPEN);
				Open = true;
			}
		} else {
			Open = false;
			BK4819_SetAF(BK4819_AF_MUTE);
		}
		SYSTEM_DelayMs(200);
		if (Flag) {
			FLASHLIGHT_TurnOn();
		} else {
			FLASHLIGHT_TurnOff();
		}
		Flag = !Flag;
	}
#endif
}