89 lines
1.9 KiB
C++
89 lines
1.9 KiB
C++
#include "SX1273.h"
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SX1273::SX1273(Module* mod) : SX1272(mod) {
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}
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int16_t SX1273::begin(float freq, float bw, uint8_t sf, uint8_t cr, uint8_t syncWord, int8_t power, uint8_t currentLimit, uint16_t preambleLength, uint8_t gain) {
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// execute common part
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int16_t state = SX127x::begin(SX1272_CHIP_VERSION, syncWord, currentLimit, preambleLength);
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if(state != ERR_NONE) {
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return(state);
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}
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// configure settings not accessible by API
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state = config();
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if(state != ERR_NONE) {
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return(state);
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}
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// mitigation of receiver spurious response
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// see SX1272/73 Errata, section 2.2 for details
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state = _mod->SPIsetRegValue(0x31, 0b10000000, 7, 7);
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if(state != ERR_NONE) {
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return(state);
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}
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// configure publicly accessible settings
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state = setFrequency(freq);
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if(state != ERR_NONE) {
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return(state);
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}
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state = setBandwidth(bw);
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if(state != ERR_NONE) {
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return(state);
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}
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state = setSpreadingFactor(sf);
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if(state != ERR_NONE) {
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return(state);
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}
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state = setCodingRate(cr);
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if(state != ERR_NONE) {
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return(state);
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}
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state = setOutputPower(power);
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if(state != ERR_NONE) {
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return(state);
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}
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state = setGain(gain);
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if(state != ERR_NONE) {
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return(state);
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}
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return(state);
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}
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int16_t SX1273::setSpreadingFactor(uint8_t sf) {
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uint8_t newSpreadingFactor;
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// check allowed spreading factor values
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switch(sf) {
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case 6:
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newSpreadingFactor = SX127X_SF_6;
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break;
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case 7:
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newSpreadingFactor = SX127X_SF_7;
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break;
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case 8:
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newSpreadingFactor = SX127X_SF_8;
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break;
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case 9:
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newSpreadingFactor = SX127X_SF_9;
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break;
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default:
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return(ERR_INVALID_SPREADING_FACTOR);
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}
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// set spreading factor and if successful, save the new setting
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int16_t state = setSpreadingFactorRaw(newSpreadingFactor);
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if(state == ERR_NONE) {
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SX127x::_sf = sf;
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}
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return(state);
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}
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