// Copyright (C) 2023, Mark Qvist

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

#include "ROM.h"

#ifndef CONFIG_H
	#define CONFIG_H

	#define MAJ_VERS  0x01
	#define MIN_VERS  0x3B

	#define PLATFORM_AVR   0x90
    #define PLATFORM_ESP32 0x80

	#define MCU_1284P 0x91
	#define MCU_2560  0x92
	#define MCU_ESP32 0x81

	#define BOARD_RNODE         0x31
	#define BOARD_HMBRW         0x32
	#define BOARD_TBEAM         0x33
	#define BOARD_HUZZAH32      0x34
	#define BOARD_GENERIC_ESP32 0x35
	#define BOARD_LORA32_V2_0   0x36
	#define BOARD_LORA32_V2_1   0x37
	#define BOARD_HELTEC32_V2   0x38
	#define BOARD_RNODE_NG_20   0x40
	#define BOARD_RNODE_NG_21   0x41

	#define MODE_HOST 0x11
	#define MODE_TNC  0x12

	#define CABLE_STATE_DISCONNECTED 0x00
	#define CABLE_STATE_CONNECTED    0x01
	uint8_t cable_state = CABLE_STATE_DISCONNECTED;
	
	#define BT_STATE_NA        0xff
	#define BT_STATE_OFF       0x00
	#define BT_STATE_ON        0x01
	#define BT_STATE_PAIRING   0x02
	#define BT_STATE_CONNECTED 0x03
	uint8_t bt_state = BT_STATE_NA;
	uint32_t bt_ssp_pin = 0;
	bool bt_ready = false;
	bool bt_enabled = false;
	bool bt_allow_pairing = false;

	#define M_FRQ_S 27388122
	#define M_FRQ_R 27388061
	bool console_active = false;
	bool sx1276_installed = false;

	#if defined(__AVR_ATmega1284P__)
	    #define PLATFORM PLATFORM_AVR
	    #define MCU_VARIANT MCU_1284P
	#elif defined(__AVR_ATmega2560__)
	    #define PLATFORM PLATFORM_AVR
	    #define MCU_VARIANT MCU_2560
	#elif defined(ESP32)
	    #define PLATFORM PLATFORM_ESP32
	    #define MCU_VARIANT MCU_ESP32
	#else
	    #error "The firmware cannot be compiled for the selected MCU variant"
	#endif

	#define MTU   	   508
	#define SINGLE_MTU 255
	#define HEADER_L   1
	#define MIN_L	   1

	#define CMD_L      64

	// MCU dependent configuration parameters

    #define HAS_DISPLAY false
    #define HAS_BLUETOOTH false
    #define HAS_PMU false
    #define HAS_NP false

	#if MCU_VARIANT == MCU_1284P
		const int pin_cs = 4;
		const int pin_reset = 3;
		const int pin_dio = 2;
		const int pin_led_rx = 12;
		const int pin_led_tx = 13;

		#define BOARD_MODEL BOARD_RNODE

		#define CONFIG_UART_BUFFER_SIZE 6144
		#define CONFIG_QUEUE_SIZE 6144
		#define CONFIG_QUEUE_MAX_LENGTH 200

		#define EEPROM_SIZE 4096
		#define EEPROM_OFFSET EEPROM_SIZE-EEPROM_RESERVED
	
	#elif MCU_VARIANT == MCU_2560
		const int pin_cs = 5;
		const int pin_reset = 4;
		const int pin_dio = 2;
		const int pin_led_rx = 12;
		const int pin_led_tx = 13;

		#define BOARD_MODEL BOARD_HMBRW

		#define CONFIG_UART_BUFFER_SIZE 768
		#define CONFIG_QUEUE_SIZE 5120
		#define CONFIG_QUEUE_MAX_LENGTH 24

		#define EEPROM_SIZE 4096
		#define EEPROM_OFFSET EEPROM_SIZE-EEPROM_RESERVED

	#elif MCU_VARIANT == MCU_ESP32

		// Board models for ESP32 based builds are
		// defined by the build target in the makefile.
		// If you are not using make to compile this
		// firmware, you can manually define model here.
		//
		// #define BOARD_MODEL BOARD_GENERIC_ESP32

		#if BOARD_MODEL == BOARD_GENERIC_ESP32
			const int pin_cs = 4;
			const int pin_reset = 36;
			const int pin_dio = 39;
			const int pin_led_rx = 14;
			const int pin_led_tx = 32;
            #define HAS_BLUETOOTH true
            #define HAS_CONSOLE true
		#elif BOARD_MODEL == BOARD_TBEAM
			const int pin_cs = 18;
			const int pin_reset = 23;
			const int pin_dio = 26;
			const int pin_led_rx = 2;
			const int pin_led_tx = 4;
            #define HAS_DISPLAY true
            #define HAS_PMU true
            #define HAS_BLUETOOTH true
            #define HAS_CONSOLE true
            #define HAS_SD false
		#elif BOARD_MODEL == BOARD_HUZZAH32
			const int pin_cs = 4;
			const int pin_reset = 36;
			const int pin_dio = 39;
			const int pin_led_rx = 14;
			const int pin_led_tx = 32;
			#define HAS_BLUETOOTH true
            #define HAS_CONSOLE true
		#elif BOARD_MODEL == BOARD_LORA32_V2_0
			const int pin_cs = 18;
			const int pin_reset = 12;
			const int pin_dio = 26;
			#if defined(EXTERNAL_LEDS)
				const int pin_led_rx = 2;
				const int pin_led_tx = 0;
			#else
				const int pin_led_rx = 22;
				const int pin_led_tx = 22;
			#endif
            #define HAS_DISPLAY true
            #define HAS_BLUETOOTH true
            #define HAS_CONSOLE true
		#elif BOARD_MODEL == BOARD_LORA32_V2_1
			const int pin_cs = 18;
			const int pin_reset = 23;
			const int pin_dio = 26;
			#if defined(EXTERNAL_LEDS)
				const int pin_led_rx = 15;
				const int pin_led_tx = 4;
			#else
				const int pin_led_rx = 25;
				const int pin_led_tx = 25;
			#endif
            #define HAS_DISPLAY true
            #define HAS_BLUETOOTH true
            #define HAS_PMU true
            #define HAS_CONSOLE true
		#elif BOARD_MODEL == BOARD_HELTEC32_V2
			const int pin_cs = 18;
			const int pin_reset = 23;
			const int pin_dio = 26;
			#if defined(EXTERNAL_LEDS)
				const int pin_led_rx = 36;
				const int pin_led_tx = 37;
			#else
				const int pin_led_rx = 25;
				const int pin_led_tx = 25;
			#endif
            #define HAS_DISPLAY true
			#define HAS_BLUETOOTH true
            #define HAS_CONSOLE true
		#elif BOARD_MODEL == BOARD_RNODE_NG_20
            #define HAS_DISPLAY true
            #define HAS_BLUETOOTH true
			#define HAS_NP true
            #define HAS_CONSOLE true
			const int pin_cs = 18;
			const int pin_reset = 12;
			const int pin_dio = 26;
			const int pin_np = 4;
			#if HAS_NP == false
				#if defined(EXTERNAL_LEDS)
					const int pin_led_rx = 2;
					const int pin_led_tx = 0;
				#else
					const int pin_led_rx = 22;
					const int pin_led_tx = 22;
				#endif
			#endif
		#elif BOARD_MODEL == BOARD_RNODE_NG_21
            #define HAS_DISPLAY true
            #define HAS_BLUETOOTH true
			#define HAS_CONSOLE true
            #define HAS_PMU true
			#define HAS_NP true
			#define HAS_SD false
			const int pin_cs = 18;
			const int pin_reset = 23;
			const int pin_dio = 26;
			const int pin_np = 12;
			const int pin_dac = 25;
			const int pin_adc = 34;
			const int SD_MISO = 2;
			const int SD_MOSI = 15;
			const int SD_CLK = 14;
			const int SD_CS = 13;
			#if HAS_NP == false
				#if defined(EXTERNAL_LEDS)
					const int pin_led_rx = 12;
					const int pin_led_tx = 4;
				#else
					const int pin_led_rx = 25;
					const int pin_led_tx = 25;
				#endif
			#endif
		#else
			#error An unsupported board was selected. Cannot compile RNode firmware.
		#endif

        bool mw_radio_online = false;

		#define CONFIG_UART_BUFFER_SIZE 6144
		#define CONFIG_QUEUE_SIZE 6144
		#define CONFIG_QUEUE_MAX_LENGTH 200

		#define EEPROM_SIZE 1024
		#define EEPROM_OFFSET EEPROM_SIZE-EEPROM_RESERVED

		#define GPS_BAUD_RATE 9600
		#define PIN_GPS_TX 12
		#define PIN_GPS_RX 34
	#endif

	#if BOARD_MODEL == BOARD_TBEAM
		#define I2C_SDA 21
		#define I2C_SCL 22
		#define PMU_IRQ 35
	#endif

	#define eeprom_addr(a) (a+EEPROM_OFFSET)

	// MCU independent configuration parameters
	const long serial_baudrate  = 115200;
	const int lora_rx_turnaround_ms = 50;

	// SX1276 RSSI offset to get dBm value from
	// packet RSSI register
	const int  rssi_offset = 157;

	// Default LoRa settings
	int  lora_sf   	   = 0;
	int  lora_cr       = 5;
	int  lora_txp      = 0xFF;
	uint32_t lora_bw   = 0;
	uint32_t lora_freq = 0;

	// Operational variables
	bool radio_locked  = true;
	bool radio_online  = false;
    bool community_fw  = true;
	bool hw_ready      = false;
    bool radio_error   = false;
    bool disp_ready    = false;
    bool pmu_ready     = false;
	bool promisc       = false;
	bool implicit      = false;
	uint8_t implicit_l = 0;

	uint8_t op_mode   = MODE_HOST;
	uint8_t model     = 0x00;
	uint8_t hwrev     = 0x00;

    int     current_rssi    = -292;
	int		last_rssi		= -292;
	uint8_t last_rssi_raw   = 0x00;
	uint8_t last_snr_raw	= 0x80;
	uint8_t seq				= 0xFF;
	uint16_t read_len		= 0;

	// Incoming packet buffer
	uint8_t pbuf[MTU];

	// KISS command buffer
	uint8_t cmdbuf[CMD_L];

	// LoRa transmit buffer
	uint8_t tbuf[MTU];

	uint32_t stat_rx		= 0;
	uint32_t stat_tx		= 0;

	bool stat_signal_detected = false;
	bool stat_signal_synced   = false;
	bool stat_rx_ongoing      = false;
	bool dcd				  = false;
	bool dcd_led              = false;
	bool dcd_waiting          = false;
	uint16_t dcd_count        = 0;
	uint16_t dcd_threshold    = 15;

	uint32_t status_interval_ms = 3;
	uint32_t last_status_update = 0;

	// Status flags
	const uint8_t SIG_DETECT = 0x01;
	const uint8_t SIG_SYNCED = 0x02;
	const uint8_t RX_ONGOING = 0x04;

    // Power management
    #define BATTERY_STATE_DISCHARGING 0x01
    #define BATTERY_STATE_CHARGING 0x02
    #define BATTERY_STATE_CHARGED 0x03
    bool battery_installed = false;
    bool battery_indeterminate = false;
    bool external_power = false;
    bool battery_ready = false;
    float battery_voltage = 0.0;
    float battery_percent = 0.0;
    uint8_t battery_state = 0x00;
    uint8_t display_intensity = 0xFF;
    bool device_init_done = false;
    bool eeprom_ok = false;
    bool firmware_update_mode = false;

	// Boot flags
	#define START_FROM_BOOTLOADER 0x01
	#define START_FROM_POWERON 0x02
	#define START_FROM_BROWNOUT 0x03
	#define START_FROM_JTAG 0x04

#endif
