Line data Source code
1 : #include "SX1277.h"
2 : #if !RADIOLIB_EXCLUDE_SX127X
3 :
4 1 : SX1277::SX1277(Module* mod) : SX1278(mod) {
5 :
6 1 : }
7 :
8 0 : int16_t SX1277::begin(float freq, float bw, uint8_t sf, uint8_t cr, uint8_t syncWord, int8_t power, uint16_t preambleLength, uint8_t gain) {
9 : // execute common part
10 0 : const uint8_t versions[] = { RADIOLIB_SX1278_CHIP_VERSION, RADIOLIB_SX1278_CHIP_VERSION_ALT, RADIOLIB_SX1278_CHIP_VERSION_RFM9X };
11 0 : int16_t state = SX127x::begin(versions, 3, syncWord, preambleLength);
12 0 : RADIOLIB_ASSERT(state);
13 :
14 : // configure publicly accessible settings
15 0 : state = setBandwidth(bw);
16 0 : RADIOLIB_ASSERT(state);
17 :
18 0 : state = setFrequency(freq);
19 0 : RADIOLIB_ASSERT(state);
20 :
21 0 : state = setSpreadingFactor(sf);
22 0 : RADIOLIB_ASSERT(state);
23 :
24 0 : state = setCodingRate(cr);
25 0 : RADIOLIB_ASSERT(state);
26 :
27 0 : state = setOutputPower(power);
28 0 : RADIOLIB_ASSERT(state);
29 :
30 0 : state = setGain(gain);
31 0 : RADIOLIB_ASSERT(state);
32 :
33 : // set publicly accessible settings that are not a part of begin method
34 0 : state = setCRC(true);
35 0 : RADIOLIB_ASSERT(state);
36 :
37 0 : return(state);
38 : }
39 :
40 0 : int16_t SX1277::beginFSK(float freq, float br, float freqDev, float rxBw, int8_t power, uint16_t preambleLength, bool enableOOK) {
41 : // execute common part
42 0 : const uint8_t versions[] = { RADIOLIB_SX1278_CHIP_VERSION, RADIOLIB_SX1278_CHIP_VERSION_ALT, RADIOLIB_SX1278_CHIP_VERSION_RFM9X };
43 0 : int16_t state = SX127x::beginFSK(versions, 3, freqDev, rxBw, preambleLength, enableOOK);
44 0 : RADIOLIB_ASSERT(state);
45 :
46 : // configure settings not accessible by API
47 0 : state = configFSK();
48 0 : RADIOLIB_ASSERT(state);
49 :
50 : // configure publicly accessible settings
51 0 : state = setFrequency(freq);
52 0 : RADIOLIB_ASSERT(state);
53 :
54 0 : state = setBitRate(br);
55 0 : RADIOLIB_ASSERT(state);
56 :
57 0 : state = setOutputPower(power);
58 0 : RADIOLIB_ASSERT(state);
59 :
60 0 : if(enableOOK) {
61 0 : state = setDataShapingOOK(RADIOLIB_SHAPING_NONE);
62 0 : RADIOLIB_ASSERT(state);
63 : } else {
64 0 : state = setDataShaping(RADIOLIB_SHAPING_NONE);
65 0 : RADIOLIB_ASSERT(state);
66 : }
67 :
68 0 : return(state);
69 : }
70 :
71 1 : int16_t SX1277::setFrequency(float freq) {
72 1 : RADIOLIB_CHECK_RANGE(freq, 137.0f, 1020.0f, RADIOLIB_ERR_INVALID_FREQUENCY);
73 :
74 : // set frequency and if successful, save the new setting
75 0 : int16_t state = SX127x::setFrequencyRaw(freq);
76 0 : if(state == RADIOLIB_ERR_NONE) {
77 0 : SX127x::frequency = freq;
78 : }
79 0 : return(state);
80 : }
81 :
82 1 : int16_t SX1277::setSpreadingFactor(uint8_t sf) {
83 : uint8_t newSpreadingFactor;
84 :
85 : // check allowed spreading factor values
86 1 : switch(sf) {
87 0 : case 6:
88 0 : newSpreadingFactor = RADIOLIB_SX127X_SF_6;
89 0 : break;
90 0 : case 7:
91 0 : newSpreadingFactor = RADIOLIB_SX127X_SF_7;
92 0 : break;
93 0 : case 8:
94 0 : newSpreadingFactor = RADIOLIB_SX127X_SF_8;
95 0 : break;
96 0 : case 9:
97 0 : newSpreadingFactor = RADIOLIB_SX127X_SF_9;
98 0 : break;
99 1 : default:
100 1 : return(RADIOLIB_ERR_INVALID_SPREADING_FACTOR);
101 : }
102 :
103 : // set spreading factor and if successful, save the new setting
104 0 : int16_t state = SX1278::setSpreadingFactorRaw(newSpreadingFactor);
105 0 : if(state == RADIOLIB_ERR_NONE) {
106 0 : SX127x::spreadingFactor = sf;
107 : }
108 :
109 0 : return(state);
110 : }
111 :
112 1 : int16_t SX1277::setDataRate(DataRate_t dr, ModemType_t modem) {
113 : // get the current modem
114 : ModemType_t currentModem;
115 1 : int16_t state = this->getModem(¤tModem);
116 1 : RADIOLIB_ASSERT(state);
117 :
118 : // switch over if the requested modem is different
119 1 : if(modem != RADIOLIB_MODEM_NONE && modem != currentModem) {
120 0 : state = this->standby();
121 0 : RADIOLIB_ASSERT(state);
122 0 : state = this->setModem(modem);
123 0 : RADIOLIB_ASSERT(state);
124 : }
125 :
126 1 : if(modem == RADIOLIB_MODEM_NONE) {
127 1 : modem = currentModem;
128 : }
129 :
130 : // select interpretation based on modem
131 1 : if(modem == RADIOLIB_MODEM_FSK) {
132 : // set the bit rate
133 0 : state = this->setBitRate(dr.fsk.bitRate);
134 0 : RADIOLIB_ASSERT(state);
135 :
136 : // set the frequency deviation
137 0 : state = this->setFrequencyDeviation(dr.fsk.freqDev);
138 :
139 1 : } else if(modem == RADIOLIB_MODEM_LORA) {
140 : // set the spreading factor
141 1 : state = this->setSpreadingFactor(dr.lora.spreadingFactor);
142 1 : RADIOLIB_ASSERT(state);
143 :
144 : // set the bandwidth
145 0 : state = this->setBandwidth(dr.lora.bandwidth);
146 : }
147 :
148 0 : return(state);
149 : }
150 :
151 1 : int16_t SX1277::checkDataRate(DataRate_t dr, ModemType_t modem) {
152 1 : int16_t state = RADIOLIB_ERR_UNKNOWN;
153 :
154 : // retrieve modem if not supplied
155 1 : if(modem == RADIOLIB_MODEM_NONE) {
156 1 : state = this->getModem(&modem);
157 1 : RADIOLIB_ASSERT(state);
158 : }
159 :
160 : // select interpretation based on modem
161 1 : if(modem == RADIOLIB_MODEM_FSK) {
162 0 : RADIOLIB_CHECK_RANGE(dr.fsk.bitRate, 0.5f, 300.0f, RADIOLIB_ERR_INVALID_BIT_RATE);
163 0 : if(!((dr.fsk.freqDev + dr.fsk.bitRate/2.0f <= 250.0f) && (dr.fsk.freqDev <= 200.0f))) {
164 0 : return(RADIOLIB_ERR_INVALID_FREQUENCY_DEVIATION);
165 : }
166 0 : return(RADIOLIB_ERR_NONE);
167 :
168 1 : } else if(modem == RADIOLIB_MODEM_LORA) {
169 1 : RADIOLIB_CHECK_RANGE(dr.lora.spreadingFactor, 6, 9, RADIOLIB_ERR_INVALID_SPREADING_FACTOR);
170 0 : RADIOLIB_CHECK_RANGE(dr.lora.bandwidth, 0.0f, 510.0f, RADIOLIB_ERR_INVALID_BANDWIDTH);
171 0 : RADIOLIB_CHECK_RANGE(dr.lora.codingRate, 4, 8, RADIOLIB_ERR_INVALID_CODING_RATE);
172 0 : return(RADIOLIB_ERR_NONE);
173 :
174 : }
175 :
176 0 : return(state);
177 : }
178 :
179 1 : int16_t SX1277::setModem(ModemType_t modem) {
180 1 : switch(modem) {
181 0 : case(ModemType_t::RADIOLIB_MODEM_LORA): {
182 0 : return(this->begin());
183 : } break;
184 0 : case(ModemType_t::RADIOLIB_MODEM_FSK): {
185 0 : return(this->beginFSK());
186 : } break;
187 1 : default:
188 1 : return(RADIOLIB_ERR_WRONG_MODEM);
189 : }
190 : }
191 :
192 : #endif
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