/*
 This project 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.

 Multiprotocol 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 Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
 */

// Check selected board type
#ifndef XMEGA
#if not defined(ARDUINO_AVR_PRO) && not defined(ARDUINO_AVR_MINI)
	#error You must select the board type "Arduino Pro or Pro Mini" or "Arduino Mini"
#endif
#if F_CPU != 16000000L || not defined(__AVR_ATmega328P__)
	#error You must select the processor type "ATmega328(5V, 16MHz)"
#endif
#endif

//******************
// Protocols
//******************
enum PROTOCOLS
{
	MODE_SERIAL		= 0,	// Serial commands
	MODE_FLYSKY 	= 1,	// =>A7105
	MODE_HUBSAN		= 2,	// =>A7105
	MODE_FRSKY		= 3,	// =>CC2500
	MODE_HISKY		= 4,	// =>NRF24L01
	MODE_V2X2		= 5,	// =>NRF24L01
	MODE_DSM2		= 6,	// =>CYRF6936
	MODE_DEVO		= 7,	// =>CYRF6936
	MODE_YD717		= 8,	// =>NRF24L01
	MODE_KN			= 9,	// =>NRF24L01
	MODE_SYMAX		= 10,	// =>NRF24L01
	MODE_SLT		= 11,	// =>NRF24L01
	MODE_CX10		= 12,	// =>NRF24L01
	MODE_CG023		= 13,	// =>NRF24L01
	MODE_BAYANG		= 14,	// =>NRF24L01
	MODE_FRSKYX		= 15,	// =>CC2500
	MODE_ESKY		= 16,	// =>NRF24L01
	MODE_MT99XX		= 17,	// =>NRF24L01
	MODE_MJXQ		= 18,	// =>NRF24L01
	MODE_SHENQI		= 19,	// =>NRF24L01
	MODE_FY326		= 20,	// =>NRF24L01
	MODE_SFHSS		= 21,	// =>CC2500
	MODE_J6PRO		= 22,	// =>CYRF6936
	MODE_FQ777		= 23,	// =>NRF24L01
	MODE_ASSAN		= 24	// =>NRF24L01
};

enum Flysky
{
	Flysky	= 0,
	V9X9	= 1,
	V6X6	= 2,
	V912	= 3
};
enum Hisky
{
	Hisky	= 0,
	HK310	= 1
};
enum DSM2
{
	DSM2	= 0,
	DSMX	= 1
};
enum YD717
{       			
	YD717	= 0,
	SKYWLKR	= 1,
	SYMAX4	= 2,
	XINXUN	= 3,
	NIHUI	= 4
};
enum KN
{
	WLTOYS	= 0,
	FEILUN	= 1
};
enum SYMAX
{
	SYMAX	= 0,
	SYMAX5C	= 1
};
enum CX10
{
    CX10_GREEN	= 0,
    CX10_BLUE	= 1,	// also compatible with CX10-A, CX12
    DM007		= 2,
	Q282		= 3,
	JC3015_1	= 4,
	JC3015_2	= 5,
	MK33041		= 6,
	Q242		= 7
};
enum CG023
{
    CG023	= 0,
    YD829	= 1,
    H8_3D	= 2
};
enum MT99XX
{
	MT99	= 0,
	H7		= 1,
	YZ		= 2,
	LS		= 3
};
enum MJXQ
{
	WLH08	= 0,
	X600	= 1,
	X800	= 2,
	H26D	= 3,
	E010	= 4
};

enum FRSKYX
{
	CH_16	= 0,
	CH_8	= 1,
};

#define NONE 		0
#define P_HIGH		1
#define P_LOW		0
#define AUTOBIND	1
#define NO_AUTOBIND	0

struct PPM_Parameters
{
	uint8_t protocol : 5;
	uint8_t sub_proto : 3;
	uint8_t rx_num : 4;
	uint8_t power : 1;
	uint8_t autobind : 1;
	uint8_t option;
};

//*******************
//***   Pinouts   ***
//*******************
#define LED_pin 13							//Promini original led on B5
#define PPM_pin 3							//PPM-D3
#ifdef XMEGA
	#define SDI_pin 6						//SDIO-D6
#else
	#define SDI_pin 5						//SDIO-D5
#endif
#define SCLK_pin	4						//SCK-D4
#define CS_pin		2						//CS-D2
#define SDO_pin		6						//D6
#define CC25_CSN_pin 7
#define NRF_CSN_pin  8
#define CYRF_CSN_pin 9
#define CTRL1 		1						//C1 (A1)
#define CTRL2 		2						//C2 (A2)
//
#ifdef XMEGA
	#define CTRL1_on
	#define CTRL1_off
	#define CTRL2_on
	#define CTRL2_off
#else
	#define CTRL1_on  PORTC |=  _BV(1)
	#define CTRL1_off PORTC &= ~_BV(1)
	#define CTRL2_on  PORTC |=  _BV(2)
	#define CTRL2_off PORTC &= ~_BV(2)
#endif
//
#ifdef XMEGA
	#define  CS_on PORTD.OUTSET = _BV(4)			//D4
	#define  CS_off PORTD.OUTCLR = _BV(4)		//D4
#else
	#define  CS_on PORTD |= _BV(2)			//D2
	#define  CS_off PORTD &= ~_BV(2)		//D2
#endif
//
#ifdef XMEGA
	#define  SCK_on PORTD.OUTSET = _BV(7)			//D7
	#define  SCK_off PORTD.OUTCLR = _BV(7)		//D7
#else
	#define  SCK_on PORTD |= _BV(4)			//D4
	#define  SCK_off PORTD &= ~_BV(4)		//D4
#endif
//
#ifdef XMEGA
	#define  SDI_on PORTD.OUTSET = _BV(5)			//D5
	#define  SDI_off PORTD.OUTCLR = _BV(5)		//D5
#else
	#define  SDI_on PORTD |= _BV(5)			//D5
	#define  SDI_off PORTD &= ~_BV(5)		//D5
#endif
//
#ifdef XMEGA
	#define  SDI_1 (PORTD.IN & (1<<SDI_pin)) == (1<<SDI_pin)	//D5
	#define  SDI_0 (PORTD.IN & (1<<SDI_pin)) == 0x00			//D5
#else
	#define  SDI_1 (PIND & (1<<SDI_pin)) == (1<<SDI_pin)	//D5
	#define  SDI_0 (PIND & (1<<SDI_pin)) == 0x00			//D5
#endif
//
#define SDI_SET_INPUT  DDRD &= ~_BV(5)		//D5
#define SDI_SET_OUTPUT DDRD |=  _BV(5)		//D5
//
#ifdef XMEGA
	#define CC25_CSN_on PORTD.OUTSET  = _BV(7)	//D7
	#define CC25_CSN_off PORTD.OUTCLR = _BV(7)	//D7
#else
	#define CC25_CSN_on PORTD  |=  _BV(7)		//D7
	#define CC25_CSN_off PORTD &= ~_BV(7)		//D7
#endif
//
#ifdef XMEGA
	#define NRF_CSN_on
	#define NRF_CSN_off
#else
	#define NRF_CSN_on PORTB  |=  _BV(0)		//D8
	#define NRF_CSN_off PORTB &= ~_BV(0)		//D8
#endif
//
#ifdef XMEGA
	#define CYRF_CSN_on PORTD.OUTSET  = _BV(4)
	#define CYRF_CSN_off PORTD.OUTCLR = _BV(4)
#else
	#define CYRF_CSN_on  PORTB |=  _BV(1)		//D9
	#define CYRF_CSN_off PORTB &= ~_BV(1)		//D9
	#define CYRF_RST_HI  PORTC |=  _BV(5)		//A5
	#define CYRF_RST_LO  PORTC &= ~_BV(5)		//A5
#endif
//  
#ifdef XMEGA
	#define  SDO_1 (PORTD.IN & (1<<SDO_pin)) == (1<<SDO_pin)	//D6
	#define  SDO_0 (PORTD.IN & (1<<SDO_pin)) == 0x00			//D6
#else
	#define  SDO_1 (PIND & (1<<SDO_pin)) == (1<<SDO_pin)		//D6
	#define  SDO_0 (PIND & (1<<SDO_pin)) == 0x00				//D6
#endif
//
//

// LED
#ifdef XMEGA
	#define LED_ON  PORTD.OUTCLR		= _BV(1)
	#define LED_OFF PORTD.OUTSET		= _BV(1)
	#define LED_TOGGLE  PORTD.OUTTGL	= _BV(1)
	#define LED_SET_OUTPUT PORTD.DIRSET	= _BV(1)
	#define IS_LED_on		( (PORTD.OUT & _BV(1)) != 0x00 )
#else
	#define LED_ON			PORTB |= _BV(5)
	#define LED_OFF			PORTB &= ~_BV(5)
	#define LED_TOGGLE		PORTB ^= _BV(5)
	#define LED_SET_OUTPUT	DDRB |= _BV(5)
	#define IS_LED_on		( (PORTB & _BV(5)) != 0x00 )
#endif

//BIND
#ifdef XMEGA
	#define IS_BIND_BUTTON_on	( (PORTD.IN & _BV(2)) == 0x00 )
#else
	#define BIND_SET_INPUT		DDRB &= ~_BV(5)
	#define BIND_SET_PULLUP		PORTB |= _BV(5)
	#define IS_BIND_BUTTON_on	( (PINB & _BV(5)) == 0x00 )
	#define BIND_SET_OUTPUT		DDRB |= _BV(5)
#endif

// TX
#ifdef DEBUG_TX
	#define TX_ON  PORTD |= _BV(1)
	#define TX_OFF  PORTD &= ~_BV(1)
	#define TX_TOGGLE  PORTD ^= _BV(1)
	#define TX_SET_OUTPUT DDRD |= _BV(1)
#else
	#define TX_ON
	#define TX_OFF
	#define TX_TOGGLE
	#define TX_SET_OUTPUT
#endif

// Macros
#define NOP() __asm__ __volatile__("nop")
#define BV(bit) (1 << bit)

//Serial flags definition
#define RX_FLAG_on			protocol_flags |= _BV(0)
#define RX_FLAG_off			protocol_flags &= ~_BV(0)
#define IS_RX_FLAG_on		( ( protocol_flags & _BV(0) ) !=0 )
//
#define CHANGE_PROTOCOL_FLAG_on		protocol_flags |= _BV(1)
#define CHANGE_PROTOCOL_FLAG_off		protocol_flags &= ~_BV(1)
#define IS_CHANGE_PROTOCOL_FLAG_on	( ( protocol_flags & _BV(1) ) !=0 )
//
#define POWER_FLAG_on		protocol_flags |= _BV(2)
#define POWER_FLAG_off		protocol_flags &= ~_BV(2)
#define IS_POWER_FLAG_on	( ( protocol_flags & _BV(2) ) !=0 )
//
#define RANGE_FLAG_on		protocol_flags |= _BV(3)
#define RANGE_FLAG_off		protocol_flags &= ~_BV(3)
#define IS_RANGE_FLAG_on	( ( protocol_flags & _BV(3) ) !=0 )
//
#define AUTOBIND_FLAG_on	protocol_flags |= _BV(4)
#define AUTOBIND_FLAG_off	protocol_flags &= ~_BV(4)
#define IS_AUTOBIND_FLAG_on	( ( protocol_flags & _BV(4) ) !=0 )
//
#define BIND_BUTTON_FLAG_on		protocol_flags |= _BV(5)
#define BIND_BUTTON_FLAG_off	protocol_flags &= ~_BV(5)
#define IS_BIND_BUTTON_FLAG_on	( ( protocol_flags & _BV(5) ) !=0 )

//PPM RX OK
#define PPM_FLAG_off			protocol_flags &= ~_BV(6)
#define PPM_FLAG_on			protocol_flags |= _BV(6)
#define IS_PPM_FLAG_on		( ( protocol_flags & _BV(6) ) !=0 )

//Bind flag for blinking
#define BIND_IN_PROGRESS	protocol_flags &= ~_BV(7)
#define BIND_DONE			protocol_flags |= _BV(7)
#define IS_BIND_DONE_on		( ( protocol_flags & _BV(7) ) !=0 )

#define BAD_PROTO_off		protocol_flags2 &= ~_BV(0)
#define BAD_PROTO_on		protocol_flags2 |= _BV(0)
#define IS_BAD_PROTO_on		( ( protocol_flags2 & _BV(0) ) !=0 )

#define RX_DONOTUPDTAE_off	protocol_flags2 &= ~_BV(1)
#define RX_DONOTUPDTAE_on	protocol_flags2 |= _BV(1)
#define IS_RX_DONOTUPDTAE_on	( ( protocol_flags2 & _BV(1) ) !=0 )

#define RX_MISSED_BUFF_off	protocol_flags2 &= ~_BV(2)
#define RX_MISSED_BUFF_on	protocol_flags2 |= _BV(2)
#define IS_RX_MISSED_BUFF_on	( ( protocol_flags2 & _BV(2) ) !=0 )

#define TX_MAIN_PAUSE_off		protocol_flags2 &= ~_BV(3)
#define TX_MAIN_PAUSE_on			protocol_flags2 |= _BV(3)
#define IS_TX_MAIN_PAUSE_on		( ( protocol_flags2 & _BV(3) ) !=0 )

#define TX_RX_PAUSE_off		protocol_flags2 &= ~_BV(4)
#define TX_RX_PAUSE_on			protocol_flags2 |= _BV(4)
#define IS_TX_RX_PAUSE_on		( ( protocol_flags2 & _BV(4) ) !=0 )

#define IS_TX_PAUSE_on		( ( protocol_flags2 & (_BV(4)|_BV(3)) ) !=0 )

#define BLINK_BIND_TIME	100
#define BLINK_SERIAL_TIME	500
#define BLINK_BAD_PROTO_TIME_LOW	1000
#define BLINK_BAD_PROTO_TIME_HIGH	50

//AUX flags definition
#define Servo_AUX1	Servo_AUX & _BV(0)
#define Servo_AUX2	Servo_AUX & _BV(1)
#define Servo_AUX3	Servo_AUX & _BV(2)
#define Servo_AUX4	Servo_AUX & _BV(3)
#define Servo_AUX5	Servo_AUX & _BV(4)
#define Servo_AUX6	Servo_AUX & _BV(5)
#define Servo_AUX7	Servo_AUX & _BV(6)
#define Servo_AUX8	Servo_AUX & _BV(7)

#define GET_FLAG(ch, mask) ( ch ? mask : 0)

//************************
//***  Power settings  ***
//************************
enum {
	TXPOWER_100uW,
	TXPOWER_300uW,
	TXPOWER_1mW,
	TXPOWER_3mW,
	TXPOWER_10mW,
	TXPOWER_30mW,
	TXPOWER_100mW,
	TXPOWER_150mW
};

// A7105 power
//	Power amp is ~+16dBm so:
enum A7105_POWER
{
	A7105_POWER_0 = 0x00<<3 | 0x00,	// TXPOWER_100uW  = -23dBm == PAC=0 TBG=0
	A7105_POWER_1 = 0x00<<3 | 0x01,	// TXPOWER_300uW  = -20dBm == PAC=0 TBG=1
	A7105_POWER_2 = 0x00<<3 | 0x02,	// TXPOWER_1mW    = -16dBm == PAC=0 TBG=2
	A7105_POWER_3 = 0x00<<3 | 0x04,	// TXPOWER_3mW    = -11dBm == PAC=0 TBG=4
	A7105_POWER_4 = 0x01<<3 | 0x05,	// TXPOWER_10mW   =  -6dBm == PAC=1 TBG=5
	A7105_POWER_5 = 0x02<<3 | 0x07,	// TXPOWER_30mW   =   0dBm == PAC=2 TBG=7
	A7105_POWER_6 = 0x03<<3 | 0x07,	// TXPOWER_100mW  =   1dBm == PAC=3 TBG=7
	A7105_POWER_7 = 0x03<<3 | 0x07	// TXPOWER_150mW  =   1dBm == PAC=3 TBG=7
};
#define A7105_HIGH_POWER	A7105_POWER_7
#define	A7105_LOW_POWER		A7105_POWER_3
#define	A7105_RANGE_POWER	A7105_POWER_0
#define	A7105_BIND_POWER	A7105_POWER_0

// NRF Power
// Power setting is 0..3 for nRF24L01
// Claimed power amp for nRF24L01 from eBay is 20dBm. 
enum NRF_POWER
{						//      Raw            w 20dBm PA
	NRF_POWER_0 = 0x00,	// 0 : -18dBm  (16uW)   2dBm (1.6mW)
	NRF_POWER_1 = 0x01,	// 1 : -12dBm  (60uW)   8dBm   (6mW)
	NRF_POWER_2 = 0x02,	// 2 :  -6dBm (250uW)  14dBm  (25mW)
	NRF_POWER_3 = 0x03	// 3 :   0dBm   (1mW)  20dBm (100mW)
};
#define NRF_HIGH_POWER		NRF_POWER_2
#define	NRF_LOW_POWER		NRF_POWER_1
#define	NRF_RANGE_POWER		NRF_POWER_0
#define	NRF_BIND_POWER		NRF_POWER_0

// CC2500 power output from the chip itself
// The numbers do not take into account any outside amplifier
enum CC2500_POWER
{
	CC2500_POWER_0  = 0x00,	// –55dbm or less
	CC2500_POWER_1  = 0x50,	// -30dbm
	CC2500_POWER_2  = 0x44, // –28dbm
	CC2500_POWER_3  = 0xC0, // –26dbm
	CC2500_POWER_4  = 0x84, // –24dbm
	CC2500_POWER_5  = 0x81, // –22dbm
	CC2500_POWER_6  = 0x46, // –20dbm
	CC2500_POWER_7  = 0x93, // –18dbm
	CC2500_POWER_8  = 0x55, // –16dbm
	CC2500_POWER_9  = 0x8D, // –14dbm
	CC2500_POWER_10 = 0xC6,	// -12dbm
	CC2500_POWER_11 = 0x97,	// -10dbm
	CC2500_POWER_12 = 0x6E,	//  -8dbm
	CC2500_POWER_13 = 0x7F,	//  -6dbm
	CC2500_POWER_14 = 0xA9,	//  -4dbm
	CC2500_POWER_15 = 0xBB,	//  -2dbm
	CC2500_POWER_16 = 0xFE,	//   0dbm
	CC2500_POWER_17 = 0xFF	//  +1dbm
};
#define CC2500_HIGH_POWER	CC2500_POWER_16
#define CC2500_LOW_POWER	CC2500_POWER_13
#define CC2500_RANGE_POWER	CC2500_POWER_1
#define CC2500_BIND_POWER	CC2500_POWER_1

// CYRF power
enum CYRF_POWER
{
	CYRF_POWER_0 = 0x00,	// -35dbm
	CYRF_POWER_1 = 0x01,	// -30dbm
	CYRF_POWER_2 = 0x02,	// -24dbm
	CYRF_POWER_3 = 0x03,	// -18dbm
	CYRF_POWER_4 = 0x04,	// -13dbm
	CYRF_POWER_5 = 0x05,	//  -5dbm
	CYRF_POWER_6 = 0x06,	//   0dbm
	CYRF_POWER_7 = 0x07		//  +4dbm
};
#define CYRF_HIGH_POWER		CYRF_POWER_7
#define	CYRF_LOW_POWER		CYRF_POWER_3
#define	CYRF_RANGE_POWER	CYRF_POWER_1	// 1/30 of the full power distance
#define	CYRF_BIND_POWER		CYRF_POWER_1

enum TXRX_State {
	TXRX_OFF,
	TX_EN,
	RX_EN
};

// Packet ack status values
enum {
	PKT_PENDING = 0,
	PKT_ACKED,
	PKT_TIMEOUT
};

// baudrate defines for serial
#define SPEED_100K	0
#define SPEED_9600	1

//****************************************
//*** MULTI protocol serial definition ***
//****************************************
/*
**************************
16 channels serial protocol
**************************
Serial: 100000 Baud 8e2      _ xxxx xxxx p --
  Total of 26 bytes
  Stream[0]   = 0x55
   header
  Stream[1]   = sub_protocol|BindBit|RangeCheckBit|AutoBindBit;
   sub_protocol is 0..31 (bits 0..4)
   =>	Reserved	0
					Flysky		1
					Hubsan		2
					Frsky		3
					Hisky		4
					V2x2		5
					DSM2		6
					Devo		7
					YD717		8
					KN			9
					SymaX		10
					SLT			11
					CX10		12
					CG023		13
					Bayang		14
					FrskyX		15
					ESky		16
					MT99XX		17
					MJXQ		18
					SHENQI		19
					FY326		20
					SFHSS		21
					J6PRO		22
					FQ777		23
					ASSAN		24
   BindBit=>		0x80	1=Bind/0=No
   AutoBindBit=>	0x40	1=Yes /0=No
   RangeCheck=>		0x20	1=Yes /0=No
  Stream[2]   = RxNum | Power | Type;
   RxNum value is 0..15 (bits 0..3)
   Type is 0..7 <<4     (bit 4..6)
		sub_protocol==Flysky
			Flysky	0
			V9x9	1
			V6x6	2
			V912	3
		sub_protocol==Hisky
			Hisky	0
			HK310	1
		sub_protocol==DSM2
			DSM2	0
			DSMX	1
		sub_protocol==YD717
			YD717	0
			SKYWLKR	1
			SYMAX4	2
			XINXUN	3
			NIHUI	4
		sub_protocol==KN
			WLTOYS	0
			FEILUN	1
		sub_protocol==SYMAX
			SYMAX	0
			SYMAX5C	1
		sub_protocol==CX10
			CX10_GREEN	0
			CX10_BLUE	1	// also compatible with CX10-A, CX12
			DM007		2
			Q282		3
			JC3015_1	4
			JC3015_2	5
			MK33041		6
			Q242		7
		sub_protocol==CG023
			CG023		0
			YD829		1
			H8_3D		2
		sub_protocol==MT99XX
			MT99		0
			H7			1
			YZ			2
			LS			3
		sub_protocol==MJXQ
			WLH08		0
			X600		1
			X800		2
			H26D		3
			E010		4
		sub_protocol==FRSKYX
			CH_16		0
			CH_8		1
   Power value => 0x80	0=High/1=Low
  Stream[3]   = option_protocol;
   option_protocol value is -127..127
  Stream[4] to [25] = Channels
   16 Channels on 11 bits (0..2047)
	0		-125%
    204		-100%
	1024	   0%
	1843	+100%
	2047	+125%
   Channels bits are concatenated to fit in 22 bytes like in SBUS protocol
*/