mirror of
https://github.com/pascallanger/DIY-Multiprotocol-TX-Module.git
synced 2025-02-04 18:48:11 +00:00
247 lines
7.3 KiB
C++
247 lines
7.3 KiB
C++
/*
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This project is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Multiprotocol is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Multiprotocol. If not, see <http://www.gnu.org/licenses/>.
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*/
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#if defined(HONTAI_NRF24L01_INO)
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#include "iface_nrf24l01.h"
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#define HONTAI_BIND_COUNT 80
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#define HONTAI_PACKET_PERIOD 13500
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#define HONTAI_INITIAL_WAIT 500
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#define HONTAI_BIND_HONTAI_PACKET_SIZE 10
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#define HONTAI_PACKET_SIZE 12
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#define HONTAI_RF_BIND_CHANNEL 0
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enum{
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HONTAI_FLAG_FLIP = 0x01,
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HONTAI_FLAG_PICTURE = 0x02,
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HONTAI_FLAG_VIDEO = 0x04,
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HONTAI_FLAG_HEADLESS = 0x08,
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HONTAI_FLAG_RTH = 0x10,
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HONTAI_FLAG_CALIBRATE = 0x20,
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};
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// proudly swiped from http://www.drdobbs.com/implementing-the-ccitt-cyclical-redundan/199904926
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#define HONTAI_POLY 0x8408
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static void __attribute__((unused)) crc16(uint8_t *data_p, uint8_t length)
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{
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uint16_t crc = 0xffff;
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length -= 2;
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do
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{
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for (uint8_t i = 0, data = (uint8_t)*data_p++;
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i < 8;
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i++, data >>= 1)
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{
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if ((crc & 0x01) ^ (data & 0x01))
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crc = (crc >> 1) ^ HONTAI_POLY;
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else
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crc >>= 1;
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}
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} while (--length);
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crc = ~crc;
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*data_p++ = crc & 0xff;
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*data_p = crc >> 8;
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}
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static void __attribute__((unused)) HONTAI_send_packet(uint8_t bind)
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{
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uint8_t packet_size;
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if (bind)
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{
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memcpy(packet, rx_tx_addr, 5);
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memset(&packet[5], 0, 3);
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packet_size=HONTAI_BIND_HONTAI_PACKET_SIZE;
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}
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else
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{
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if(sub_protocol == FORMAT_JJRCX1)
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packet[0] = GET_FLAG(Servo_AUX2, 0x02); // Arm
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else
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packet[0] = 0x0b;
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packet[1] = 0x00;
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packet[2] = 0x00;
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packet[3] = (convert_channel_8b_scale(THROTTLE, 0, 127) << 1) // Throttle
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| GET_FLAG(Servo_AUX3, 0x01); // Picture
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packet[4] = convert_channel_8b_scale(AILERON, 63, 0); // Aileron
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if(sub_protocol == FORMAT_HONTAI)
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{
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packet[4] |= GET_FLAG(Servo_AUX6, 0x80) // RTH
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| GET_FLAG(Servo_AUX5, 0x40); // Headless
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}
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else
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{
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packet[4] |= 0x80; // not sure what this bit does
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if (sub_protocol == FORMAT_X5C1)
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packet[4] |= GET_FLAG(Servo_AUX2, 0x40); // Lights (X5C1)
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}
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packet[5] = convert_channel_8b_scale(ELEVATOR, 0, 63) // Elevator
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| GET_FLAG(Servo_AUX7, 0x80) // Calibrate
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| GET_FLAG(Servo_AUX1, 0x40); // Flip
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packet[6] = convert_channel_8b_scale(RUDDER, 0, 63) // Rudder
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| GET_FLAG(Servo_AUX4, 0x80); // Video
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if(sub_protocol == FORMAT_X5C1)
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packet[7] = 0; // Aileron trim
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else
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packet[7] = convert_channel_8b_scale(AILERON, 0, 32)-16; // Aileron trim
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if(sub_protocol == FORMAT_HONTAI)
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packet[8] = convert_channel_8b_scale(RUDDER, 0, 32)-16; // Rudder trim
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else
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{
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packet[8] = 0xc0 // Always in expert mode
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| GET_FLAG(Servo_AUX6, 0x02) // RTH
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| GET_FLAG(Servo_AUX5, 0x01); // Headless
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}
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if (sub_protocol == FORMAT_X5C1)
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packet[9] = 0; // Elevator trim
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else
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packet[9] = convert_channel_8b_scale(ELEVATOR, 0, 32)-16; // Elevator trim
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packet_size=HONTAI_PACKET_SIZE;
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}
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crc16(packet, packet_size);
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// Power on, TX mode, 2byte CRC
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if(sub_protocol == FORMAT_JJRCX1)
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NRF24L01_SetTxRxMode(TX_EN);
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else
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XN297_Configure(BV(NRF24L01_00_EN_CRC) | BV(NRF24L01_00_CRCO) | BV(NRF24L01_00_PWR_UP));
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NRF24L01_WriteReg(NRF24L01_05_RF_CH, bind ? HONTAI_RF_BIND_CHANNEL : hopping_frequency[hopping_frequency_no++]);
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hopping_frequency_no %= 3;
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NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);
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NRF24L01_FlushTx();
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if(sub_protocol == FORMAT_JJRCX1)
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NRF24L01_WritePayload(packet, packet_size);
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else
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XN297_WritePayload(packet, packet_size);
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NRF24L01_SetPower();
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}
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static void __attribute__((unused)) HONTAI_init()
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{
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NRF24L01_Initialize();
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NRF24L01_SetTxRxMode(TX_EN);
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if(sub_protocol == FORMAT_JJRCX1)
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NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, (uint8_t*)"\xd2\xb5\x99\xb3\x4a", 5);
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else
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XN297_SetTXAddr((const uint8_t*)"\xd2\xb5\x99\xb3\x4a", 5);
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NRF24L01_FlushTx();
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NRF24L01_FlushRx();
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NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70); // Clear data ready, data sent, and retransmit
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NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00); // No Auto Acknowldgement on all data pipes
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NRF24L01_SetBitrate(NRF24L01_BR_1M); // 1Mbps
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NRF24L01_SetPower();
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NRF24L01_Activate(0x73); // Activate feature register
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if(sub_protocol == FORMAT_JJRCX1)
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{
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NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0xff); // JJRC uses dynamic payload length
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NRF24L01_WriteReg(NRF24L01_1C_DYNPD, 0x3f); // match other stock settings even though AA disabled...
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NRF24L01_WriteReg(NRF24L01_1D_FEATURE, 0x07);
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}
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else
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{
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NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0x00); // no retransmits
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NRF24L01_WriteReg(NRF24L01_1C_DYNPD, 0x00); // Disable dynamic payload length on all pipes
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NRF24L01_WriteReg(NRF24L01_1D_FEATURE, 0x00);
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}
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NRF24L01_Activate(0x73); // Deactivate feature register
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}
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const uint8_t PROGMEM hopping_frequency_nonels[][3] = {
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{0x05, 0x19, 0x28}, // Hontai
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{0x0a, 0x1e, 0x2d}}; // JJRC X1
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const uint8_t PROGMEM addr_vals[4][16] = {
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{0x24, 0x26, 0x2a, 0x2c, 0x32, 0x34, 0x36, 0x4a, 0x4c, 0x4e, 0x54, 0x56, 0x5a, 0x64, 0x66, 0x6a},
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{0x92, 0x94, 0x96, 0x9a, 0xa4, 0xa6, 0xac, 0xb2, 0xb4, 0xb6, 0xca, 0xcc, 0xd2, 0xd4, 0xd6, 0xda},
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{0x93, 0x95, 0x99, 0x9b, 0xa5, 0xa9, 0xab, 0xad, 0xb3, 0xb5, 0xc9, 0xcb, 0xcd, 0xd3, 0xd5, 0xd9},
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{0x25, 0x29, 0x2b, 0x2d, 0x33, 0x35, 0x49, 0x4b, 0x4d, 0x59, 0x5b, 0x65, 0x69, 0x6b, 0x6d, 0x6e}};
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static void __attribute__((unused)) HONTAI_init2()
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{
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uint8_t data_tx_addr[5];
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//TX address
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data_tx_addr[0] = pgm_read_byte_near( &addr_vals[0][ rx_tx_addr[3] & 0x0f]);
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data_tx_addr[1] = pgm_read_byte_near( &addr_vals[1][(rx_tx_addr[3] >> 4) & 0x0f]);
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data_tx_addr[2] = pgm_read_byte_near( &addr_vals[2][ rx_tx_addr[4] & 0x0f]);
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data_tx_addr[3] = pgm_read_byte_near( &addr_vals[3][(rx_tx_addr[4] >> 4) & 0x0f]);
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data_tx_addr[4] = 0x24;
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if(sub_protocol == FORMAT_JJRCX1)
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NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, data_tx_addr, sizeof(data_tx_addr));
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else
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XN297_SetTXAddr(data_tx_addr, sizeof(data_tx_addr));
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//Hopping frequency table
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for(uint8_t i=0;i<3;i++)
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hopping_frequency[i]=pgm_read_byte_near( &hopping_frequency_nonels[sub_protocol == FORMAT_JJRCX1?1:0][i] );
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hopping_frequency_no=0;
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}
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static void __attribute__((unused)) HONTAI_initialize_txid()
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{
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rx_tx_addr[4] = rx_tx_addr[2];
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if(sub_protocol == FORMAT_HONTAI)
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{
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rx_tx_addr[0] = 0x4c; // first three bytes some kind of model id? - set same as stock tx
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rx_tx_addr[1] = 0x4b;
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rx_tx_addr[2] = 0x3a;
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}
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else
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{
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rx_tx_addr[0] = 0x4b; // JJRC X1
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rx_tx_addr[1] = 0x59;
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rx_tx_addr[2] = 0x3a;
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}
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}
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uint16_t HONTAI_callback()
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{
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if(bind_counter!=0)
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{
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HONTAI_send_packet(1);
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bind_counter--;
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if (bind_counter == 0)
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{
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HONTAI_init2();
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BIND_DONE;
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}
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}
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else
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HONTAI_send_packet(0);
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return HONTAI_PACKET_PERIOD;
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}
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uint16_t initHONTAI()
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{
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bind_counter = HONTAI_BIND_COUNT;
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HONTAI_initialize_txid();
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HONTAI_init();
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return HONTAI_INITIAL_WAIT;
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}
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#endif
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