mirror of
https://github.com/pascallanger/DIY-Multiprotocol-TX-Module.git
synced 2025-02-04 20:38:14 +00:00
261 lines
7.2 KiB
C++
261 lines
7.2 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(CC2500_INSTALLED) || defined(NRF24L01_INSTALLED)
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#include "iface_nrf250k.h"
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#include "iface_xn297.h"
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static void __attribute__((unused)) XN297L_Init()
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{
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//CC2500
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#if defined(CC2500_INSTALLED)
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debugln("Using CC2500");
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xn297_scramble_enabled=XN297_SCRAMBLED; //enabled by default
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rf_switch(SW_CC2500);
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CC2500_250K_Init();
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#elif defined(NRF24L01_INSTALLED)
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debugln("Using NRF");
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rf_switch(SW_NRF);
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NRF24L01_Initialize();
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NRF24L01_SetBitrate(NRF24L01_BR_250K); // 250Kbps
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#endif
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}
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static void __attribute__((unused)) XN297L_SetTXAddr(const uint8_t* addr, uint8_t len)
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{
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#if defined(CC2500_INSTALLED)
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if (len > 5) len = 5;
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if (len < 3) len = 3;
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xn297_addr_len = len;
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memcpy(xn297_tx_addr, addr, len);
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#elif defined(NRF24L01_INSTALLED)
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XN297_SetTXAddr(addr,len);
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#endif
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}
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static void __attribute__((unused)) XN297L_WritePayload(uint8_t* msg, uint8_t len)
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{
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#if defined(CC2500_INSTALLED)
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uint8_t buf[32];
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uint8_t last = 0;
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uint8_t i;
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// address
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for (i = 0; i < xn297_addr_len; ++i)
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{
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buf[last] = xn297_tx_addr[xn297_addr_len - i - 1];
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if(xn297_scramble_enabled)
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buf[last] ^= xn297_scramble[i];
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last++;
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}
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// payload
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for (i = 0; i < len; ++i) {
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// bit-reverse bytes in packet
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buf[last] = bit_reverse(msg[i]);
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if(xn297_scramble_enabled)
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buf[last] ^= xn297_scramble[xn297_addr_len+i];
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last++;
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}
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// crc
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crc = 0xb5d2;
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for (uint8_t i = 0; i < last; ++i)
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crc16_update( buf[i], 8);
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if(xn297_scramble_enabled)
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crc ^= pgm_read_word(&xn297_crc_xorout_scrambled[xn297_addr_len - 3 + len]);
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else
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crc ^= pgm_read_word(&xn297_crc_xorout[xn297_addr_len - 3 + len]);
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buf[last++] = crc >> 8;
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buf[last++] = crc & 0xff;
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// stop TX/RX
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CC2500_Strobe(CC2500_SIDLE);
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// flush tx FIFO
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CC2500_Strobe(CC2500_SFTX);
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// packet length
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CC2500_WriteReg(CC2500_3F_TXFIFO, last + 3);
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// xn297L preamble
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CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, (uint8_t*)"\x71\x0f\x55", 3);
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// xn297 packet
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CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, buf, last);
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// transmit
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CC2500_Strobe(CC2500_STX);
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#elif defined(NRF24L01_INSTALLED)
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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_07_STATUS, 0x70);
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NRF24L01_FlushTx();
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XN297_WritePayload(msg, len);
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#endif
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}
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static void __attribute__((unused)) XN297L_WriteEnhancedPayload(uint8_t* msg, uint8_t len, uint8_t noack)
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{
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#if defined(CC2500_INSTALLED)
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uint8_t buf[32];
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uint8_t scramble_index=0;
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uint8_t last = 0;
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static uint8_t pid=0;
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// address
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for (uint8_t i = 0; i < xn297_addr_len; ++i)
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{
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buf[last] = xn297_tx_addr[xn297_addr_len-i-1];
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if(xn297_scramble_enabled)
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buf[last] ^= xn297_scramble[scramble_index++];
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last++;
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}
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// pcf
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buf[last] = (len << 1) | (pid>>1);
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if(xn297_scramble_enabled)
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buf[last] ^= xn297_scramble[scramble_index++];
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last++;
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buf[last] = (pid << 7) | (noack << 6);
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// payload
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buf[last]|= bit_reverse(msg[0]) >> 2; // first 6 bit of payload
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if(xn297_scramble_enabled)
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buf[last] ^= xn297_scramble[scramble_index++];
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for (uint8_t i = 0; i < len-1; ++i)
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{
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last++;
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buf[last] = (bit_reverse(msg[i]) << 6) | (bit_reverse(msg[i+1]) >> 2);
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if(xn297_scramble_enabled)
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buf[last] ^= xn297_scramble[scramble_index++];
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}
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last++;
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buf[last] = bit_reverse(msg[len-1]) << 6; // last 2 bit of payload
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if(xn297_scramble_enabled)
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buf[last] ^= xn297_scramble[scramble_index++] & 0xc0;
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// crc
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//if (xn297_crc)
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{
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crc = 0xb5d2;
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for (uint8_t i = 0; i < last; ++i)
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crc16_update( buf[i], 8);
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crc16_update( buf[last] & 0xc0, 2);
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if (xn297_scramble_enabled)
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crc ^= pgm_read_word(&xn297_crc_xorout_scrambled_enhanced[xn297_addr_len-3+len]);
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//else
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// crc ^= pgm_read_word(&xn297_crc_xorout_enhanced[xn297_addr_len - 3 + len]);
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buf[last++] |= (crc >> 8) >> 2;
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buf[last++] = ((crc >> 8) << 6) | ((crc & 0xff) >> 2);
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buf[last++] = (crc & 0xff) << 6;
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}
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pid++;
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pid &= 3;
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// stop TX/RX
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CC2500_Strobe(CC2500_SIDLE);
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// flush tx FIFO
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CC2500_Strobe(CC2500_SFTX);
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// packet length
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CC2500_WriteReg(CC2500_3F_TXFIFO, last + 3);
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// xn297L preamble
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CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, (uint8_t*)"\x71\x0F\x55", 3);
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// xn297 packet
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CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, buf, last);
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// transmit
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CC2500_Strobe(CC2500_STX);
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#elif defined(NRF24L01_INSTALLED)
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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_07_STATUS, 0x70);
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NRF24L01_FlushTx();
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XN297_WriteEnhancedPayload(msg, len, noack);
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#endif
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}
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static void __attribute__((unused)) XN297L_HoppingCalib(uint8_t num_freq)
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{ //calibrate hopping frequencies
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#if defined(CC2500_INSTALLED)
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CC2500_250K_HoppingCalib(num_freq);
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#elif defined(NRF24L01_INSTALLED)
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(void)num_freq;
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#endif
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}
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static void __attribute__((unused)) XN297L_Hopping(uint8_t index)
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{
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#if defined(CC2500_INSTALLED)
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CC2500_250K_Hopping(index);
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#elif defined(NRF24L01_INSTALLED)
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NRF24L01_WriteReg(NRF24L01_05_RF_CH, hopping_frequency[index]);
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#endif
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}
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static void __attribute__((unused)) XN297L_RFChannel(uint8_t number)
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{ //change channel
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#if defined(CC2500_INSTALLED)
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CC2500_250K_RFChannel(number);
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#elif defined(NRF24L01_INSTALLED)
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NRF24L01_WriteReg(NRF24L01_05_RF_CH, number);
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#endif
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}
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static void __attribute__((unused)) XN297L_SetPower()
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{
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#if defined(CC2500_INSTALLED)
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CC2500_SetPower();
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#elif defined(NRF24L01_INSTALLED)
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NRF24L01_SetPower();
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#endif
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}
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static void __attribute__((unused)) XN297L_SetFreqOffset()
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{ // Frequency offset
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#if defined(CC2500_INSTALLED)
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CC2500_SetFreqOffset();
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#endif
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}
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static void __attribute__((unused)) NRF250K_SetTXAddr(uint8_t* addr, uint8_t len)
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{
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if (len > 5) len = 5;
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if (len < 3) len = 3;
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#if defined(CC2500_INSTALLED)
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CC2500_250K_NRF_SetTXAddr(addr, len);
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#elif defined(NRF24L01_INSTALLED)
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NRF24L01_WriteReg(NRF24L01_03_SETUP_AW, len-2);
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NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, addr, len);
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#endif
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}
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static void __attribute__((unused)) NRF250K_WritePayload(uint8_t* msg, uint8_t len)
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{
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#if defined(CC2500_INSTALLED)
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CC2500_250K_NRF_WritePayload(msg, len);
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#elif defined(NRF24L01_INSTALLED)
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NRF24L01_FlushTx();
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NRF24L01_WriteReg(NRF24L01_07_STATUS, _BV(NRF24L01_07_TX_DS) | _BV(NRF24L01_07_RX_DR) | _BV(NRF24L01_07_MAX_RT));
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NRF24L01_WritePayload(msg, len);
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#endif
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}
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static boolean __attribute__((unused)) NRF250K_IsPacketSent()
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{
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#if defined(CC2500_INSTALLED)
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return true; // don't know on the CC2500 how to detect if the packet has been transmitted...
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#elif defined(NRF24L01_INSTALLED)
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return NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_TX_DS);
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#endif
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}
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#endif
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