Update Compiling.md

Missing low batt telem

Lua_scripts/MultiChan.txt

@@ -229,6 +229,6 @@
 98,0,Kyosho3,ASF,0
 100,0,YuXiang,Std,0,Lock,Rate,Land,Manual,Flip,Mode,Pitch
 102,0,JIABAILE,Std,0,Speed,Light,Flash
-102,1,JIABAILE,Gyro,0,Speed,Light,Flash,Tr_ST
+102,1,JIABAILE,Gyro,0,Speed,Light,Flash,ST_Tr
 103,0,H36,Std,1,Flip,HLess,RTH
-104,0,KAMTOM_NRF24L01_INO,Std,1,
+104,0,KAMTOM,Std,0,ST_Tr,TH_Tr,TH_DR

Multiprotocol/Kamtom_nrf24l01.ino

@@ -0,0 +1,179 @@
+/*
+ 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/>.
+ */
+#if defined(KAMTOM_NRF24L01_INO)
+
+#include "iface_xn297.h"
+
+//#define FORCE_KAMTOM_ORIGINAL_ID
+
+#define KAMTOM_PAYLOAD_SIZE			16
+#define KAMTOM_RF_NUM_CHANNELS		4
+#define KAMTOM_BIND_COUNT			2000
+#define KAMTOM_WRITE_TIME			650
+#define KAMTOM_BIND_CHANNEL			0x28	//40
+#define KAMTOM_PACKET_PERIOD		3585
+
+
+enum {
+	KAMTOM_DATA,
+	KAMTOM_RX,
+};
+
+static void __attribute__((unused)) KAMTOM_send_packet()
+{
+	if(bind_counter)
+	{
+		bind_counter--;
+		if(!bind_counter)
+			BIND_DONE;
+	}
+
+	memset(packet, 0x00, 16);
+
+	if(IS_BIND_DONE)
+	{//Normal
+		XN297_Hopping(hopping_frequency_no);
+		hopping_frequency_no++;
+		hopping_frequency_no &= 3;
+
+		//RXID
+		packet[0] = rx_tx_addr[0];
+		packet[2] = rx_tx_addr[1];
+		//Next RF channel
+		packet[1] = hopping_frequency[hopping_frequency_no];
+		//Channels and trims
+		for(uint8_t i=0; i<6; i++)
+		{
+			packet[4+i] = convert_channel_s8b(CH_TAER[i]);
+			if(i>3) //ST_TR and TH_TR
+				packet[4+i] >>= 2;
+		}
+		//packet[11] = 0x00;	//??
+		//TH_DR
+		packet[12] = convert_channel_16b_limit(CH7,0x25,0x64);
+	}
+	else
+	{
+		packet[1] = KAMTOM_BIND_CHANNEL;
+		memcpy(&packet[4],hopping_frequency,4);
+		packet[12] = 0xA5;
+	}
+	packet[10] = 0x40;	//??
+	//Checksum
+	uint16_t sum = packet[1];
+	for(uint8_t i=4;i<13;i++)
+		 sum += packet[i];
+	packet[13] = sum;
+	packet[3] = (sum>>6) & 0xFC;
+	//TXID
+	packet[14] = rx_tx_addr[2];
+	packet[15] = rx_tx_addr[3];
+	// Send
+	XN297_SetPower();
+	XN297_SetTxRxMode(TX_EN);
+	XN297_WriteEnhancedPayload(packet, KAMTOM_PAYLOAD_SIZE,false);
+	#if 0
+	//def DEBUG_SERIAL
+		for(uint8_t i=0; i < KAMTOM_PAYLOAD_SIZE; i++)
+			debug("%02X ", packet[i]);
+		debugln();
+	#endif
+}
+
+static void __attribute__((unused)) KAMTOM_initialize_txid()
+{
+	calc_fh_channels(4);
+	#ifdef FORCE_KAMTOM_ORIGINAL_ID
+		rx_tx_addr[0] = 0xC7;
+		rx_tx_addr[1] = 0x78;
+		rx_tx_addr[2] = 0x2C;
+		rx_tx_addr[3] = 0x25;
+		hopping_frequency[0] = 59;
+		hopping_frequency[1] = 59;
+		hopping_frequency[2] = 71;
+		hopping_frequency[3] = 65;
+	#endif
+}
+
+static void __attribute__((unused)) KAMTOM_RF_init()
+{
+	XN297_Configure(XN297_CRCEN, XN297_SCRAMBLED, XN297_1M);
+	//Address
+	XN297_SetTXAddr((uint8_t*)"\xCC\xDD\xEE\xDD", 4);
+	XN297_SetRXAddr((uint8_t*)"\xCC\xDD\xEE\xDD", KAMTOM_PAYLOAD_SIZE);
+	XN297_RFChannel(KAMTOM_BIND_CHANNEL);
+}
+
+uint16_t KAMTOM_callback()
+{
+	static bool rx=false;
+	
+	switch(phase)
+	{
+		case KAMTOM_DATA:
+			rx = XN297_IsRX();
+			XN297_SetTxRxMode(TXRX_OFF);
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(KAMTOM_PACKET_PERIOD);
+			#endif
+			KAMTOM_send_packet();
+			if(rx)
+			{
+				uint8_t val=XN297_ReadEnhancedPayload(packet_in, KAMTOM_PAYLOAD_SIZE);
+				if(val==KAMTOM_PAYLOAD_SIZE)
+				{
+					BIND_DONE;
+					if(packet_in[0] == 0xA0 && packet_in[14] == rx_tx_addr[2] && packet_in[15] == rx_tx_addr[3])
+					{
+						rx_tx_addr[0] = packet_in[9];
+						rx_tx_addr[1] = packet_in[10];
+						//if(packet_in[1] == 0x03)		// low voltage
+					}
+					#if 0
+						for(uint8_t i=0; i < KAMTOM_PAYLOAD_SIZE; i++)
+							debug(" %02X", packet_in[i]);
+						debugln();
+					#endif
+				}
+			}
+			phase++;
+			return KAMTOM_WRITE_TIME;
+		default: //KAMTOM_RX
+			//{ // Wait for packet to be sent before switching to receive mode
+			//	uint16_t start=(uint16_t)micros();
+			//	while ((uint16_t)((uint16_t)micros()-(uint16_t)start) < 500)
+			//		if(XN297_IsPacketSent())
+			//			break;
+			//}
+			//Switch to RX
+			XN297_SetTxRxMode(TXRX_OFF);
+			XN297_SetTxRxMode(RX_EN);
+			phase = KAMTOM_DATA;
+			return KAMTOM_PACKET_PERIOD - KAMTOM_WRITE_TIME;
+	}
+	return 0;
+}
+
+void KAMTOM_init()
+{
+	KAMTOM_initialize_txid();
+	KAMTOM_RF_init();
+
+	bind_counter = KAMTOM_BIND_COUNT;
+	phase = KAMTOM_DATA;
+	hopping_frequency_no = 0;
+}
+
+#endif

Multiprotocol/Multi.txt

@@ -99,3 +99,4 @@
 100,YuXiang
 102,JIABAILE,STD,GYRO
 103,H36
+104,KAMTOM

Multiprotocol/Multi_Protos.ino

@@ -115,6 +115,7 @@ const char STR_KYOSHO3[]    ="Kyosho3";
 const char STR_YUXIANG[]    ="YuXiang";
 const char STR_UDIRC[]      ="UDIRC";
 const char STR_JIABAILE[]   ="JIABAILE";
+const char STR_KAMTOM[]     ="KAMTOM";
 
 const char STR_SUBTYPE_FLYSKY[] =     "\x04""Std\0""V9x9""V6x6""V912""CX20";
 const char STR_SUBTYPE_HUBSAN[] =     "\x04""H107""H301""H501";
@@ -391,6 +392,9 @@ const mm_protocol_definition multi_protocols[] = {
 	#if defined(JOYSWAY_A7105_INO)
 		{PROTO_JOYSWAY,    STR_JOYSWAY,   NO_SUBTYPE,            0, OPTION_NONE,    0, 0, SW_A7105,  JOYSWAY_init,    JOYSWAY_callback    },
 	#endif
+	#if defined(KAMTOM_NRF24L01_INO)
+		{PROTO_KAMTOM,     STR_KAMTOM,    NO_SUBTYPE,            0, OPTION_NONE,    0, 0, SW_NRF,    KAMTOM_init,     KAMTOM_callback     },
+	#endif
 	#if defined(KF606_CCNRF_INO)
 		{PROTO_KF606,      STR_KF606,     STR_SUBTYPE_KF606,     3, OPTION_RFTUNE,  0, 0, SW_NRF,    KF606_init,      KF606_callback      },
 	#endif

Multiprotocol/Multiprotocol.h

@@ -19,7 +19,7 @@
 #define VERSION_MAJOR		1
 #define VERSION_MINOR		3
 #define VERSION_REVISION	4
-#define VERSION_PATCH_LEVEL	33
+#define VERSION_PATCH_LEVEL	34
 
 #define MODE_SERIAL 0
 
@@ -131,6 +131,7 @@ enum PROTOCOLS
 	PROTO_UDIRC		= 101,	// =>CC2500 & NRF24L01
 	PROTO_JIABAILE	= 102,	// =>NRF24L01
 	PROTO_H36		= 103,	// =>NRF24L01
+	PROTO_KAMTOM	= 104,	// =>NRF24L01
 	
 	PROTO_NANORF	= 126,	// =>NRF24L01
 	PROTO_TEST		= 127,	// =>CC2500

Multiprotocol/SGF22_nrf24l01.ino

@@ -169,7 +169,7 @@ uint16_t SGF22_callback()
 	}
 	else
 	{//send 3 times in total the same packet
-		NRF24L01_Strobe(REUSE_TX_PL);
+		XN297_ReSendPayload();
 		phase++;
 		if(phase > 2)
 		{

Multiprotocol/UDIRC_ccnrf.ino

@@ -12,6 +12,8 @@ Multiprotocol is distributed in the hope that it will be useful,
  You should have received a copy of the GNU General Public License
  along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
  */
+//Models: UDIRC UD160x(PRO), Pinecone Models SG-160x, Eachine EAT15
+
 #if defined(UDIRC_CCNRF_INO)
 
 #include "iface_xn297.h"
@@ -20,12 +22,15 @@ Multiprotocol is distributed in the hope that it will be useful,
 
 #define UDIRC_PAYLOAD_SIZE			15
 #define UDIRC_RF_NUM_CHANNELS		4
-#define UDIRC_PACKET_PERIOD			8000
+#define UDIRC_PACKET_PERIOD			21000
 #define UDIRC_BIND_COUNT			2000
+#define UDIRC_P1_P2_TIME			5000
 #define UDIRC_WRITE_TIME			1500
 
 enum {
-	UDIRC_DATA=0,
+	UDIRC_DATA1=0,
+	UDIRC_DATA2,
+	UDIRC_DATA3,
 	UDIRC_RX,
 };
 
@@ -50,6 +55,7 @@ static void __attribute__((unused)) UDIRC_send_packet()
 		}
 		else
 		{//Switch to normal
+			rf_ch_num = 1;
 			BIND_DONE;
 			XN297_SetTXAddr(rx_tx_addr, 5);
 			XN297_SetRXAddr(rx_tx_addr, UDIRC_PAYLOAD_SIZE);
@@ -58,21 +64,20 @@ static void __attribute__((unused)) UDIRC_send_packet()
 	if(!bind_counter)
 	{//Normal
 		packet[0] = 0x08;
-		packet[1] = convert_channel_16b_limit(AILERON,0,200);	//ST
-		packet[2] = convert_channel_16b_limit(THROTTLE,0,200);	//TH
-		packet[3] = convert_channel_16b_limit(ELEVATOR,0,200);	//CH4
-		packet[4] = convert_channel_16b_limit(RUDDER,0,200);	//CH3
+		//Channels SG-16xx: ST/TH/CH4 /CH3  /UNK/UNK/UNK/UNK/GYRO/ST_TRIM/ST_DR
+		//Channels EAT15  : ST/TH/RATE/LIGHT/UNK/UNK/UNK/UNK/GYRO/ST_TRIM/ST_DR
+		for(uint8_t i=0; i<12; i++)
+			packet[i+1] = convert_channel_16b_limit(i,0,200);
+		//Just for now let's set the additional channels to 0
+		packet[5] = packet[6] = packet[7] = packet[8] = 0;
 	}
-	//packet[5/6..8] = 00 unknown
-	packet[9] = convert_channel_16b_limit(CH5,0,200);			//ESP
-	packet[10] = convert_channel_16b_limit(CH6,0,200);			//ST_TRIM
-	packet[11] = convert_channel_16b_limit(CH7,0,200);			//ST_DR
-	packet[12] = GET_FLAG(CH8_SW,  0x40)						//TH.REV
-				|GET_FLAG(CH9_SW,  0x80);						//ST.REV
-	//packet[13] = 00 unknown
+	packet[12] = GET_FLAG(CH12_SW,  0x40)						//TH.REV
+				|GET_FLAG(CH13_SW,  0x80);						//ST.REV
+	//packet[13] = 00; //Unknown, future flags?
 	for(uint8_t i=0;i<UDIRC_PAYLOAD_SIZE-1;i++)
 		packet[14] += packet[i];
 	// Send
+	XN297_SetFreqOffset();
 	XN297_SetPower();
 	XN297_SetTxRxMode(TX_EN);
 	XN297_WriteEnhancedPayload(packet, UDIRC_PAYLOAD_SIZE,false);
@@ -86,11 +91,22 @@ static void __attribute__((unused)) UDIRC_send_packet()
 static void __attribute__((unused)) UDIRC_initialize_txid()
 {
 	#ifdef FORCE_UDIRC_ORIGINAL_ID
+		if(RX_num)
+		{
 			rx_tx_addr[0] = 0xD0;
 			rx_tx_addr[1] = 0x06;
 			rx_tx_addr[2] = 0x00;
 			rx_tx_addr[3] = 0x00;
 			rx_tx_addr[4] = 0x81;
+		}
+		else
+		{
+			rx_tx_addr[0] = 0xF6;
+			rx_tx_addr[1] = 0x96;
+			rx_tx_addr[2] = 0x01;
+			rx_tx_addr[3] = 0x00;
+			rx_tx_addr[4] = 0x81;
+		}
 		hopping_frequency[0] = 45;
 		hopping_frequency[1] = 59;
 		hopping_frequency[2] = 52;
@@ -112,7 +128,7 @@ uint16_t UDIRC_callback()
 	bool rx;
 	switch(phase)
 	{
-		case UDIRC_DATA:
+		case UDIRC_DATA1:
 			rx = XN297_IsRX();
 			XN297_SetTxRxMode(TXRX_OFF);
 			#ifdef MULTI_SYNC
@@ -122,26 +138,25 @@ uint16_t UDIRC_callback()
 			if(rx)
 			{
 				uint8_t val=XN297_ReadEnhancedPayload(packet_in, UDIRC_PAYLOAD_SIZE);
-				debug("RX %d",val);
-				if(val==0)
+				debug("RX(%d):",val);
+				if(val != 255)
 				{
 					rf_ch_num = 1;
 					if(bind_counter)
 						bind_counter=1;
-				}
-				else
-				{
 					#ifdef DEBUG_SERIAL
 						for(uint8_t i=0; i < UDIRC_PAYLOAD_SIZE; i++)
 							debug(" %02X", packet_in[i]);
-						debugln();
 					#endif
 				}
-				//else
-				//	debug(" NOK");
 				debugln("");
 			}
 			phase++;
+			return UDIRC_P1_P2_TIME;
+		case UDIRC_DATA2:
+			//Resend packet
+			XN297_ReSendPayload();
+			phase++;
 			return UDIRC_WRITE_TIME;
 		default: //UDIRC_RX
 			//Wait for the packet transmission to finish
@@ -149,8 +164,8 @@ uint16_t UDIRC_callback()
 			//Switch to RX
 			XN297_SetTxRxMode(TXRX_OFF);
 			XN297_SetTxRxMode(RX_EN);
-			phase = UDIRC_DATA;
-			return UDIRC_PACKET_PERIOD - UDIRC_WRITE_TIME;
+			phase = UDIRC_DATA1;
+			return UDIRC_PACKET_PERIOD - UDIRC_P1_P2_TIME - UDIRC_WRITE_TIME;
 	}
 	return 0;
 }
@@ -161,7 +176,7 @@ void UDIRC_init()
 	UDIRC_RF_init();
 
 	bind_counter = IS_BIND_IN_PROGRESS ? UDIRC_BIND_COUNT : 1;
-	phase = UDIRC_DATA;
+	phase = UDIRC_DATA1;
 	hopping_frequency_no = 0;
 	rf_ch_num = 0;
 }

Multiprotocol/Validate.h

@@ -326,6 +326,7 @@
 	#undef	HONTAI_NRF24L01_INO
 	#undef	JIABAILE_NRF24L01_INO
 	#undef	JJRC345_NRF24L01_INO
+	#undef	KAMTOM_NRF24L01_INO
 	#undef	KN_NRF24L01_INO
 	#undef	KYOSHO2_NRF24L01_INO
 	#undef	LOLI_NRF24L01_INO
@@ -393,6 +394,7 @@
 	#undef	SHENQI_NRF24L01_INO
 	#undef	JIABAILE_NRF24L01_INO
 	#undef	UDIRC_CCNRF_INO
+	#undef	KAMTOM_NRF24L01_INO
 #endif
 
 #ifdef MULTI_SURFACE

Multiprotocol/XN297_EMU.ino

@@ -207,6 +207,27 @@ static void __attribute__((unused)) XN297_SetTxRxMode(enum TXRX_State mode)
 	#endif
 }
 
+#ifdef CC2500_INSTALLED
+uint8_t XN297_Buffer[32];
+uint8_t XN297_Buffer_Len = 0;
+
+static void __attribute__((unused)) XN297_SendCC2500Payload()
+{
+	// stop TX/RX
+	CC2500_Strobe(CC2500_SIDLE);
+	// flush tx FIFO
+	CC2500_Strobe(CC2500_SFTX);
+	// packet length
+	CC2500_WriteReg(CC2500_06_PKTLEN, XN297_Buffer_Len + 4);  // Packet len, fix packet len
+	// xn297L preamble
+	CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, (uint8_t*)"\x0C\x71\x0F\x55", 4);
+	// xn297 packet
+	CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, XN297_Buffer, XN297_Buffer_Len);
+	// transmit
+	CC2500_Strobe(CC2500_STX);
+}
+#endif
+
 static void __attribute__((unused)) XN297_SendPayload(uint8_t* msg, uint8_t len)
 {
 	#ifdef NRF24L01_INSTALLED
@@ -220,22 +241,25 @@ static void __attribute__((unused)) XN297_SendPayload(uint8_t* msg, uint8_t len)
 	#ifdef CC2500_INSTALLED
 		if(xn297_rf == XN297_CC2500)
 		{
-			// stop TX/RX
-			CC2500_Strobe(CC2500_SIDLE);
-			// flush tx FIFO
-			CC2500_Strobe(CC2500_SFTX);
-			// packet length
-			CC2500_WriteReg(CC2500_06_PKTLEN, len + 4);  // Packet len, fix packet len
-			// xn297L preamble
-			CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, (uint8_t*)"\x0C\x71\x0F\x55", 4);
-			// xn297 packet
-			CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, msg, len);
-			// transmit
-			CC2500_Strobe(CC2500_STX);
+			memcpy(XN297_Buffer, msg, len);
+			XN297_Buffer_Len = len;
+			XN297_SendCC2500Payload();
 		}
 	#endif
 }
 
+static void __attribute__((unused)) XN297_ReSendPayload()
+{
+	#ifdef NRF24L01_INSTALLED
+		if(xn297_rf == XN297_NRF)
+			NRF24L01_Strobe(NRF24L01_E3_REUSE_TX_PL);
+	#endif
+	#ifdef CC2500_INSTALLED
+		if(xn297_rf == XN297_CC2500)
+			XN297_SendCC2500Payload();
+	#endif
+}
+
 static void __attribute__((unused)) XN297_WritePayload(uint8_t* msg, uint8_t len)
 {
 	uint8_t buf[32];
@@ -329,9 +353,9 @@ static void __attribute__((unused)) XN297_WriteEnhancedPayload(uint8_t* msg, uin
 
 		last++;
 		buf[last] = bit_reverse(msg[len-1]) << 6; // last 2 bit of payload
+	}
 	if(xn297_scramble_enabled)
 		buf[last] ^= xn297_scramble[scramble_index++] & 0xc0;
-	}
 
 	// crc
 	if (xn297_crc)
@@ -351,8 +375,7 @@ static void __attribute__((unused)) XN297_WriteEnhancedPayload(uint8_t* msg, uin
 		buf[last++] = (crc & 0xff) << 6;
 	}
 	pid++;
-	if(pid>3)
-		pid=0;
+	pid &= 0x03;
 
 	// send packet
 	XN297_SendPayload(buf, last);

Multiprotocol/_Config.h

@@ -246,6 +246,7 @@
 #define	HONTAI_NRF24L01_INO
 #define JIABAILE_NRF24L01_INO
 #define	JJRC345_NRF24L01_INO
+#define	KAMTOM_NRF24L01_INO
 #define	KN_NRF24L01_INO
 #define	KYOSHO2_NRF24L01_INO
 #define	LOLI_NRF24L01_INO
@@ -745,6 +746,8 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		SKYTMBLR
 	PROTO_JOYSWAY
 		NONE
+	PROTO_KAMTOM
+		NONE
 	PROTO_KF606
 		KF606_KF606
 		KF606_MIG320

Multiprotocol/iface_xn297.h

@@ -28,6 +28,7 @@ static void __attribute__((unused)) XN297_SetTXAddr(const uint8_t*, uint8_t);
 static void __attribute__((unused)) XN297_SetRXAddr(const uint8_t*, uint8_t);
 static void __attribute__((unused)) XN297_SetTxRxMode(enum TXRX_State);
 static void __attribute__((unused)) XN297_SendPayload(uint8_t*, uint8_t);
+static void __attribute__((unused)) XN297_ReSendPayload();
 static void __attribute__((unused)) XN297_WritePayload(uint8_t*, uint8_t);
 static void __attribute__((unused)) XN297_WriteEnhancedPayload(uint8_t*, uint8_t, uint8_t);
 static bool __attribute__((unused)) XN297_IsRX();

Protocols_Details.md

@@ -1981,6 +1981,15 @@ Model: DF-Models SkyTumbler
 
 RTH not supported
 
+## KAMTOM - *104*
+Models: KAMTOM KM24xx (KM32xx?), Pinecone SG-24xx
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7
+---|---|---|---|---|---|---
+ST|TH|UNK1|UNK2|ST_TR|TH_TR|TH_DR
+
+Low batt telemetry is not yet added.
+
 ## KYOSHO2 - *93*
 Model: TX KT-17, Minium Edge 540, Minium Citabria
 

docs/Compiling.md

@@ -108,7 +108,7 @@ The images below indicate the pin layout and the location of the ground pin on t
 |:---:|:---:|:---:|
 <img src="images/V2b_ISP.jpeg" width="189" height="200" /> | <img src="images/MPTM_PCB_2.3d_ISP.png" width="486" height="201" /> | <img src="images/ProMini_ISP.png" width="195" height="200" /> |
 
-You are now ready to plug in the USB programmer to the computer.  If you are looking for a good working USBasp Windows driver, [use this one](http://www.protostack.com/download/USBasp-win-driver-x86-x64-v3.0.7.zip).
+You are now ready to plug in the USB programmer to the computer.  If you are looking for a good working USBasp Windows driver, [use this one](https://protostack.com.au/download/USBasp-win-driver-x86-x64-v3.0.7.zip).
 
 ### Burn bootloader and set fuses
 The bootloader only needs to be burned once, unless you decide to switch from one option to the other (or it is accidentally erased).  If you have already burned the bootloader / set the fuses you can skip this step.