New Redpine protocol

Protocol Redpine: 50
Sub protocol: Fast=0, Slow=1
Option=freq tunning

Multiprotocol/Multi.txt

@@ -47,4 +47,5 @@
 47,GD00X,GD_V1,GD_V2
 48,V761
 49,KF606
+50,REDPINE,FAST,SLOW
 63,XN_DUMP,250K,1M,2M

Multiprotocol/Multiprotocol.h

@@ -19,7 +19,7 @@
 #define VERSION_MAJOR		1
 #define VERSION_MINOR		2
 #define VERSION_REVISION	1
-#define VERSION_PATCH_LEVEL	61
+#define VERSION_PATCH_LEVEL	62
 
 //******************
 // Protocols
@@ -76,6 +76,7 @@ enum PROTOCOLS
 	PROTO_GD00X		= 47,	// =>NRF24L01
 	PROTO_V761		= 48,	// =>NRF24L01
 	PROTO_KF606		= 49,	// =>NRF24L01
+	PROTO_REDPINE	= 50,	// =>CC2500
 	PROTO_XN297DUMP	= 63,	// =>NRF24L01
 };
 
@@ -270,6 +271,11 @@ enum BUGSMINI
 	BUGSMINI= 0,
 	BUGS3H	= 1,
 };
+enum REDPINE
+{
+	RED_FAST= 0,
+	RED_SLOW= 1,
+};
 #define NONE 		0
 #define P_HIGH		1
 #define P_LOW		0
@@ -613,6 +619,7 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
 					GD00X		47
 					V761		48
 					KF606		49
+					REDPINE		50
    BindBit=>		0x80	1=Bind/0=No
    AutoBindBit=>	0x40	1=Yes /0=No
    RangeCheck=>		0x20	1=Yes /0=No
@@ -749,6 +756,9 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
 		sub_protocol==GD00X
 			GD_V1		0
 			GD_V2		1
+		sub_protocol==REDPINE
+			RED_FAST	0
+			RED_SLOW	1
 
    Power value => 0x80	0=High/1=Low
   Stream[3]   = option_protocol;

Multiprotocol/Multiprotocol.ino

@@ -113,7 +113,7 @@ uint8_t  len;
 uint8_t  armed, arm_flags, arm_channel_previous;
 
 #ifdef CC2500_INSTALLED
-	uint8_t calData[48];
+	uint8_t calData[50];
 #endif
 
 #ifdef CHECK_FOR_BOOTLOADER
@@ -442,6 +442,11 @@ void setup()
 				option			=	FORCE_CORONA_TUNING;		// Use config-defined tuning value for CORONA
 			else
 		#endif
+		#if defined(FORCE_REDPINE_TUNING) && defined(REDPINE_CC2500_INO)
+			if (protocol==PROTO_REDPINE)
+				option			=	FORCE_REDPINE_TUNING;		// Use config-defined tuning value for REDPINE
+			else
+		#endif
 		#if defined(FORCE_HITEC_TUNING) && defined(HITEC_CC2500_INO)
 			if (protocol==PROTO_HITEC)
 				option			=	FORCE_HITEC_TUNING;		// Use config-defined tuning value for HITEC
@@ -969,6 +974,14 @@ static void protocol_init()
 						remote_callback = ReadCORONA;
 						break;
 				#endif
+				#if defined(REDPINE_CC2500_INO)
+					case PROTO_REDPINE:
+						PE1_off;	//antenna RF2
+						PE2_on;
+						next_callback = initREDPINE();
+						remote_callback = ReadREDPINE;
+						break;
+				#endif
 				#if defined(HITEC_CC2500_INO)
 					case PROTO_HITEC:
 						PE1_off;	//antenna RF2
@@ -1321,6 +1334,11 @@ void update_serial_data()
 			option=FORCE_CORONA_TUNING;	// Use config-defined tuning value for CORONA
 		else
 	#endif
+	#if defined(FORCE_REDPINE_TUNING) && defined(REDPINE_CC2500_INO)
+		if (protocol==PROTO_REDPINE)
+			option=FORCE_REDPINE_TUNING;	// Use config-defined tuning value for REDPINE
+		else
+	#endif
 	#if defined(FORCE_HITEC_TUNING) && defined(HITEC_CC2500_INO)
 		if (protocol==PROTO_HITEC)
 			option=FORCE_HITEC_TUNING;	// Use config-defined tuning value for HITEC

Multiprotocol/Redpine_cc2500.ino

@@ -0,0 +1,242 @@
+/*
+ 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(REDPINE_CC2500_INO)
+
+#include "iface_cc2500.h"
+
+#define REDPINE_LOOPTIME_FAST 9		//9ms
+#define REDPINE_LOOPTIME_SLOW 22	//22ms
+
+#define REDPINE_BIND 1000
+#define REDPINE_PACKET_SIZE 11
+#define REDPINE_FEC false  // from cc2500 datasheet: The convolutional coder is a rate 1/2 code with a constraint length of m=4
+#define REDPINE_NUM_HOPS 50
+
+static void REDPINE_set_channel(uint8_t ch)
+{
+    CC2500_Strobe(CC2500_SIDLE);
+    CC2500_WriteReg(CC2500_25_FSCAL1, calData[ch]);
+    CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[ch]);
+}
+
+static void REDPINE_build_bind_packet()
+{
+    memset(&packet[0], 0, REDPINE_PACKET_SIZE);
+
+    packet[0] = REDPINE_PACKET_SIZE - 1;
+    packet[1] = 0x03;
+    packet[2] = 0x01;
+    packet[3] = rx_tx_addr[2];
+    packet[4] = rx_tx_addr[3];	// Use RX_Num
+    uint16_t idx = ((REDPINE_BIND - bind_counter) % 10) * 5;
+    packet[5] = idx;
+    packet[6] = hopping_frequency[idx++];
+    packet[7] = hopping_frequency[idx++];
+    packet[8] = hopping_frequency[idx++];
+    packet[9] = hopping_frequency[idx++];
+    packet[10] = hopping_frequency[idx++];
+    // packet[11] = 0x02;
+    // packet[12] = RXNUM;
+}
+
+static uint16_t Redpine_Scale(uint8_t chan)
+{
+    uint16_t chan_val=Channel_data[chan];	// -125%..+125% <=> 0..2047
+	if (chan_val > 2046)   chan_val = 2046;
+    else if (chan_val < 10) chan_val = 10;
+    return chan_val;
+}
+
+
+static void REDPINE_data_frame() {
+    uint16_t chan[4];
+
+    memset(&packet[0], 0, REDPINE_PACKET_SIZE);
+
+    packet[0] = REDPINE_PACKET_SIZE - 1;
+    packet[1] = rx_tx_addr[2];
+    packet[2] = rx_tx_addr[3];	// Use RX_Num
+
+    chan[0] = Redpine_Scale(0);
+    chan[1] = Redpine_Scale(1);
+    chan[2] = Redpine_Scale(2);
+    chan[3] = Redpine_Scale(3);
+
+    packet[3] = chan[0];
+    packet[4] = (((chan[0] >> 8) & 0x07) | (chan[1] << 4)) | GET_FLAG(CH5_SW, 0x08);
+    packet[5] = ((chan[1] >> 4) & 0x7F) | GET_FLAG(CH6_SW, 0x80);
+    packet[6] = chan[2];
+    packet[7] = (((chan[2] >> 8) & 0x07) | (chan[3] << 4))  | GET_FLAG(CH7_SW, 0x08);
+    packet[8] = ((chan[3] >> 4) & 0x7F) | GET_FLAG(CH8_SW, 0x80);
+    packet[9] = GET_FLAG(CH9_SW, 0x01)
+            | GET_FLAG(CH10_SW, 0x02)
+            | GET_FLAG(CH11_SW, 0x04)
+            | GET_FLAG(CH12_SW, 0x08)
+            | GET_FLAG(CH13_SW, 0x10)
+            | GET_FLAG(CH14_SW, 0x20)
+            | GET_FLAG(CH15_SW, 0x40)
+            | GET_FLAG(CH16_SW, 0x80);
+
+    if (sub_protocol==0)
+        packet[10] = REDPINE_LOOPTIME_FAST;
+    else
+        packet[10] = REDPINE_LOOPTIME_SLOW;
+}
+
+static uint16_t ReadREDPINE()
+{
+	if ( prev_option != option )
+	{ // Frequency adjust
+		CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
+		prev_option = option ;
+	}
+	if(IS_BIND_IN_PROGRESS)
+	{
+		if(bind_counter== REDPINE_BIND)
+			REDPINE_init(0);
+		if(state == REDPINE_BIND/2)
+			REDPINE_init(1);
+		REDPINE_set_channel(49);
+		CC2500_SetPower();
+		CC2500_Strobe(CC2500_SFRX);
+		REDPINE_build_bind_packet();
+		CC2500_Strobe(CC2500_SIDLE);
+		CC2500_WriteData(packet, REDPINE_PACKET_SIZE);
+		if(--bind_counter==0)
+		{
+			BIND_DONE;
+			REDPINE_init(sub_protocol);
+		}
+		return 9000;
+	}
+	else
+	{
+		CC2500_SetTxRxMode(TX_EN);
+		REDPINE_set_channel(hopping_frequency_no);
+		CC2500_SetPower();
+		CC2500_Strobe(CC2500_SFRX);
+		REDPINE_data_frame();
+		CC2500_Strobe(CC2500_SIDLE);
+		hopping_frequency_no = (hopping_frequency_no + 1) % 49;
+		CC2500_WriteData(packet, REDPINE_PACKET_SIZE);
+		if (sub_protocol==0)
+			return REDPINE_LOOPTIME_FAST*100;
+		else
+			return REDPINE_LOOPTIME_SLOW*100;
+	}
+	return 1;
+}
+
+// register, fast 250k, slow
+static const uint8_t REDPINE_init_data[][3] = {
+    {CC2500_00_IOCFG2,    0x06, 0x06},
+    {CC2500_02_IOCFG0,    0x06, 0x06},
+    {CC2500_03_FIFOTHR,   0x07, 0x07},
+    {CC2500_07_PKTCTRL1,  0x04, 0x04},
+    {CC2500_08_PKTCTRL0,  0x05, 0x05},
+    {CC2500_09_ADDR,      0x00, 0x00},
+    {CC2500_0B_FSCTRL1,   0x0A, 0x0A},
+    {CC2500_0C_FSCTRL0,   0x00, 0x00},
+    {CC2500_0D_FREQ2,     0x5D, 0x5c},
+    {CC2500_0E_FREQ1,     0x93, 0x76},
+    {CC2500_0F_FREQ0,     0xB1, 0x27},
+    {CC2500_10_MDMCFG4,   0x2D, 0x7B},
+    {CC2500_11_MDMCFG3,   0x3B, 0x61},
+    {CC2500_12_MDMCFG2,   0x73, 0x13},
+    #ifdef REDPINE_FEC    
+        {CC2500_13_MDMCFG1,   0xA3, 0xA3},
+    #else
+        {CC2500_13_MDMCFG1,   0x23, 0x23},
+    #endif
+    {CC2500_14_MDMCFG0,   0x56, 0x7a},  // Chan space
+    {CC2500_15_DEVIATN,   0x00, 0x51},
+    {CC2500_17_MCSM1,     0x0c, 0x0c},
+    {CC2500_18_MCSM0,     0x08, 0x08}, //??? 0x18, 0x18},
+    {CC2500_19_FOCCFG,    0x1D, 0x16},
+    {CC2500_1A_BSCFG,     0x1C, 0x6c},
+    {CC2500_1B_AGCCTRL2,  0xC7, 0x43},
+    {CC2500_1C_AGCCTRL1,  0x00, 0x40},
+    {CC2500_1D_AGCCTRL0,  0xB0, 0x91},
+    {CC2500_21_FREND1,    0xB6, 0x56},
+    {CC2500_22_FREND0,    0x10, 0x10},
+    {CC2500_23_FSCAL3,    0xEA, 0xA9},
+    {CC2500_24_FSCAL2,    0x0A, 0x0A},
+    {CC2500_25_FSCAL1,    0x00, 0x00},
+    {CC2500_26_FSCAL0,    0x11, 0x11},
+    {CC2500_29_FSTEST,    0x59, 0x59},
+    {CC2500_2C_TEST2,     0x88, 0x88},
+    {CC2500_2D_TEST1,     0x31, 0x31},
+    {CC2500_2E_TEST0,     0x0B, 0x0B},
+    {CC2500_3E_PATABLE,   0xff, 0xff}
+};
+
+static void REDPINE_init(uint8_t format)
+{
+	CC2500_Reset();
+
+	CC2500_WriteReg(CC2500_06_PKTLEN, REDPINE_PACKET_SIZE);
+
+	for (uint8_t i=0; i < ((sizeof REDPINE_init_data) / (sizeof REDPINE_init_data[0])); i++)
+		CC2500_WriteReg(REDPINE_init_data[i][0], REDPINE_init_data[i][format+1]);
+
+	prev_option = option;
+	CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
+	CC2500_Strobe(CC2500_SIDLE);
+
+	// calibrate hop channels
+	for (uint8_t c = 0; c < REDPINE_NUM_HOPS; c++)
+	{
+		CC2500_Strobe(CC2500_SIDLE);
+		CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[c]);
+		CC2500_Strobe(CC2500_SCAL);
+		delayMicroseconds(900);
+		calData[c] = CC2500_ReadReg(CC2500_25_FSCAL1);
+	}
+}
+
+static uint16_t initREDPINE()
+{
+	hopping_frequency_no = 0;
+	// Used from kn_nrf24l01.c : kn_calculate_freqency_hopping_channels
+	uint32_t idx = 0;
+	uint32_t rnd = MProtocol_id;
+	#define REDPINE_MAX_RF_CHANNEL 255
+	hopping_frequency[idx++] = 1;
+	while (idx < REDPINE_NUM_HOPS-1)
+	{
+		uint32_t i;
+		rnd = rnd * 0x0019660D + 0x3C6EF35F;  // Randomization
+		// Drop least-significant byte for better randomization. Start from 1
+		uint8_t next_ch = (rnd >> 8) % REDPINE_MAX_RF_CHANNEL + 1;
+		// Check that it's not duplicate nor adjacent nor channel 0 or 1
+		for (i = 0; i < idx; i++)
+		{
+			uint8_t ch = hopping_frequency[i];
+			if ((ch <= next_ch + 1) && (ch >= next_ch - 1) && (ch > 1))
+				break;
+		}
+		if (i != idx)
+			continue;
+		hopping_frequency[idx++] = next_ch;
+	}
+	hopping_frequency[49] = 0;  // Last channel is the bind channel at hop 0
+
+	bind_counter=REDPINE_BIND;
+	REDPINE_init(sub_protocol);
+	CC2500_SetTxRxMode(TX_EN);  // enable PA
+	return 10000;
+}
+#endif

Multiprotocol/Validate.h

@@ -87,6 +87,11 @@
 		#error "The CORONA forced frequency tuning value is outside of the range -127..127."
 	#endif
 #endif
+#ifdef FORCE_REDPINE_TUNING
+	#if ( FORCE_REDPINE_TUNING < -127 ) || ( FORCE_REDPINE_TUNING > 127 )
+		#error "The REDPINE forced frequency tuning value is outside of the range -127..127."
+	#endif
+#endif
 #ifdef FORCE_HITEC_TUNING
 	#if ( FORCE_HITEC_TUNING < -127 ) || ( FORCE_HITEC_TUNING > 127 )
 		#error "The HITEC forced frequency tuning value is outside of the range -127..127."
@@ -154,6 +159,7 @@
 	#undef	FRSKYX_CC2500_INO
 	#undef	SFHSS_CC2500_INO
 	#undef	CORONA_CC2500_INO
+	#undef	REDPINE_CC2500_INO
 	#undef	HITEC_CC2500_INO
 	#undef	XN297L_CC2500_EMU
 #endif

Multiprotocol/_Config.h

@@ -87,8 +87,8 @@
 //#define ORANGE_TX_BLUE
 
 /** CC2500 Fine Frequency Tuning **/
-//For optimal performance the CC2500 RF module used by the FrSkyD, FrSkyV, FrSkyX, SFHSS, CORONA and Hitec protocols needs to be tuned for each protocol.
+//For optimal performance the CC2500 RF module used by the FrSkyD, FrSkyV, FrSkyX, SFHSS, CORONA, Redpine and Hitec protocols needs to be tuned for each protocol.
-//Initial tuning should be done via the radio menu with a genuine FrSky/Futaba/CORONA/Hitec receiver.  
+//Initial tuning should be done via the radio menu with a genuine FrSky/Futaba/CORONA/Hitec/Redpine receiver.  
 //Once a good tuning value is found it can be set here and will override the radio's 'option' setting for all existing and new models which use that protocol.
 //For more information: https://github.com/pascallanger/DIY-Multiprotocol-TX-Module/tree/master/docs/Frequency_Tuning.md
 //Uncomment the lines below (remove the "//") and set an appropriate value (replace the "0") to enable. Valid range is -127 to +127.
@@ -98,6 +98,7 @@
 //#define FORCE_SFHSS_TUNING	0
 //#define FORCE_CORONA_TUNING	0
 //#define FORCE_HITEC_TUNING	0
+//#define FORCE_REDPINE_TUNING	0
 
 /** A7105 Fine Frequency Tuning **/
 //This is required in rare cases where some A7105 modules and/or RXs have an inaccurate crystal oscillator.
@@ -164,6 +165,7 @@
 #define	J6PRO_CYRF6936_INO
 #define	WFLY_CYRF6936_INO
 #define	WK2x01_CYRF6936_INO
+
 //#define TRAXXAS_CYRF6936_INO
 
 //The protocols below need a CC2500 to be installed
@@ -173,6 +175,7 @@
 #define	FRSKYX_CC2500_INO
 #define	HITEC_CC2500_INO
 #define	SFHSS_CC2500_INO
+#define	REDPINE_CC2500_INO
 
 //The protocols below need a NRF24L01 to be installed
 #define	ASSAN_NRF24L01_INO
@@ -598,6 +601,9 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		CX35
 		CX10D
 		CX10WD
+	PROTO_REDPINE
+		RED_FAST
+		RED_SLOW
 	PROTO_SFHSS
 		NONE
 	PROTO_SHENQI