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128 lines
4.0 KiB
C++
128 lines
4.0 KiB
C++
#include "SX1276Better.h"
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SX1276Better::SX1276Better(Module* mod) : SX1278(mod) {
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pubmod = mod;
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}
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int16_t SX1276Better::begin(float freq, float bw, uint8_t sf, uint8_t cr, uint8_t syncWord, int8_t power, uint16_t preambleLength, uint8_t gain) {
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// execute common part
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int16_t state = SX127x::begin(SX1278_CHIP_VERSION, syncWord, preambleLength);
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RADIOLIB_ASSERT(state);
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// configure publicly accessible settings
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state = setBandwidth(bw);
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RADIOLIB_ASSERT(state);
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state = setFrequency(freq);
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RADIOLIB_ASSERT(state);
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state = setSpreadingFactor(sf);
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RADIOLIB_ASSERT(state);
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state = setCodingRate(cr);
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RADIOLIB_ASSERT(state);
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state = setOutputPower(power);
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RADIOLIB_ASSERT(state);
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state = setGain(gain);
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RADIOLIB_ASSERT(state);
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return(state);
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}
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int16_t SX1276Better::beginFSK(float freq, float br, float freqDev, float rxBw, int8_t power, uint16_t preambleLength, bool enableOOK) {
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// execute common part
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int16_t state = SX127x::beginFSK(SX1278_CHIP_VERSION, br, freqDev, rxBw, preambleLength, enableOOK);
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RADIOLIB_ASSERT(state);
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// configure publicly accessible settings
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state = setFrequency(freq);
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RADIOLIB_ASSERT(state);
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state = setOutputPower(power);
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RADIOLIB_ASSERT(state);
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state = setDataShaping(RADIOLIB_SHAPING_NONE);
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RADIOLIB_ASSERT(state);
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return(state);
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}
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int16_t SX1276Better::setFrequency(float freq) {
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RADIOLIB_CHECK_RANGE(freq, 137.0, 1020.0, ERR_INVALID_FREQUENCY);
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// SX1276/77/78 Errata fixes
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if(getActiveModem() == SX127X_LORA) {
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// sensitivity optimization for 500kHz bandwidth
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// see SX1276/77/78 Errata, section 2.1 for details
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if(abs(_bw - 500.0) <= 0.001) {
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if((freq >= 862.0) && (freq <= 1020.0)) {
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_mod->SPIwriteRegister(0x36, 0x02);
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_mod->SPIwriteRegister(0x3a, 0x64);
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} else if((freq >= 410.0) && (freq <= 525.0)) {
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_mod->SPIwriteRegister(0x36, 0x02);
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_mod->SPIwriteRegister(0x3a, 0x7F);
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}
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}
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// mitigation of receiver spurious response
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// see SX1276/77/78 Errata, section 2.3 for details
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if(abs(_bw - 7.8) <= 0.001) {
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_mod->SPIsetRegValue(0x31, 0b0000000, 7, 7);
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_mod->SPIsetRegValue(0x2F, 0x48);
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_mod->SPIsetRegValue(0x30, 0x00);
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freq += 7.8;
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} else if(abs(_bw - 10.4) <= 0.001) {
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_mod->SPIsetRegValue(0x31, 0b0000000, 7, 7);
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_mod->SPIsetRegValue(0x2F, 0x44);
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_mod->SPIsetRegValue(0x30, 0x00);
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freq += 10.4;
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} else if(abs(_bw - 15.6) <= 0.001) {
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_mod->SPIsetRegValue(0x31, 0b0000000, 7, 7);
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_mod->SPIsetRegValue(0x2F, 0x44);
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_mod->SPIsetRegValue(0x30, 0x00);
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freq += 15.6;
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} else if(abs(_bw - 20.8) <= 0.001) {
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_mod->SPIsetRegValue(0x31, 0b0000000, 7, 7);
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_mod->SPIsetRegValue(0x2F, 0x44);
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_mod->SPIsetRegValue(0x30, 0x00);
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freq += 20.8;
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} else if(abs(_bw - 31.25) <= 0.001) {
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_mod->SPIsetRegValue(0x31, 0b0000000, 7, 7);
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_mod->SPIsetRegValue(0x2F, 0x44);
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_mod->SPIsetRegValue(0x30, 0x00);
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freq += 31.25;
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} else if(abs(_bw - 41.7) <= 0.001) {
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_mod->SPIsetRegValue(0x31, 0b0000000, 7, 7);
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_mod->SPIsetRegValue(0x2F, 0x44);
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_mod->SPIsetRegValue(0x30, 0x00);
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freq += 41.7;
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} else if(abs(_bw - 62.5) <= 0.001) {
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_mod->SPIsetRegValue(0x31, 0b0000000, 7, 7);
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_mod->SPIsetRegValue(0x2F, 0x40);
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_mod->SPIsetRegValue(0x30, 0x00);
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} else if(abs(_bw - 125.0) <= 0.001) {
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_mod->SPIsetRegValue(0x31, 0b0000000, 7, 7);
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_mod->SPIsetRegValue(0x2F, 0x40);
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_mod->SPIsetRegValue(0x30, 0x00);
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} else if(abs(_bw - 250.0) <= 0.001) {
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_mod->SPIsetRegValue(0x31, 0b0000000, 7, 7);
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_mod->SPIsetRegValue(0x2F, 0x40);
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_mod->SPIsetRegValue(0x30, 0x00);
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} else if(abs(_bw - 500.0) <= 0.001) {
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_mod->SPIsetRegValue(0x31, 0b1000000, 7, 7);
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}
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}
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// set frequency and if successful, save the new setting
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int16_t state = SX127x::setFrequencyRaw(freq);
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if(state == ERR_NONE) {
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SX127x::_freq = freq;
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}
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return(state);
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}
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int16_t SX1276Better::setModeP(uint8_t mode) {
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return(_mod->SPIsetRegValue(SX127X_REG_OP_MODE, mode, 2, 0, 5));
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} |