提交 | 用户 | age
|
8b51c7
|
1 |
/*! |
Q |
2 |
* \file sx126x.c |
|
3 |
* |
|
4 |
* \brief SX126x driver implementation |
|
5 |
* |
|
6 |
* \copyright Revised BSD License, see section \ref LICENSE. |
|
7 |
* |
|
8 |
* \code |
|
9 |
* ______ _ |
|
10 |
* / _____) _ | | |
|
11 |
* ( (____ _____ ____ _| |_ _____ ____| |__ |
|
12 |
* \____ \| ___ | (_ _) ___ |/ ___) _ \ |
|
13 |
* _____) ) ____| | | || |_| ____( (___| | | | |
|
14 |
* (______/|_____)_|_|_| \__)_____)\____)_| |_| |
|
15 |
* (C)2013-2017 Semtech |
|
16 |
* |
|
17 |
* \endcode |
|
18 |
* |
|
19 |
* \author Miguel Luis ( Semtech ) |
|
20 |
* |
|
21 |
* \author Gregory Cristian ( Semtech ) |
|
22 |
*/ |
|
23 |
#include <math.h> |
|
24 |
#include <string.h> |
|
25 |
#include "sx126x.h" |
|
26 |
#include "sx126x-board.h" |
|
27 |
#include "delay.h" |
|
28 |
|
|
29 |
//#define USE_TCXO |
|
30 |
/*! |
|
31 |
* \brief Radio registers definition |
|
32 |
*/ |
|
33 |
typedef struct |
|
34 |
{ |
|
35 |
uint16_t Addr; //!< The address of the register |
|
36 |
uint8_t Value; //!< The value of the register |
|
37 |
}RadioRegisters_t; |
|
38 |
|
|
39 |
/*! |
|
40 |
* \brief Holds the internal operating mode of the radio |
|
41 |
*/ |
|
42 |
static RadioOperatingModes_t OperatingMode; |
|
43 |
|
|
44 |
/*! |
|
45 |
* \brief Stores the current packet type set in the radio |
|
46 |
*/ |
|
47 |
static RadioPacketTypes_t PacketType; |
|
48 |
|
|
49 |
/*! |
|
50 |
* \brief Stores the last frequency error measured on LoRa received packet |
|
51 |
*/ |
|
52 |
volatile uint32_t FrequencyError = 0; |
|
53 |
|
|
54 |
/*! |
|
55 |
* \brief Hold the status of the Image calibration |
|
56 |
*/ |
|
57 |
static bool ImageCalibrated = false; |
|
58 |
|
|
59 |
/* |
|
60 |
* SX126x DIO IRQ callback functions prototype |
|
61 |
*/ |
|
62 |
|
|
63 |
/*! |
|
64 |
* \brief DIO 0 IRQ callback |
|
65 |
*/ |
|
66 |
void SX126xOnDioIrq( void ); |
|
67 |
|
|
68 |
/*! |
|
69 |
* \brief DIO 0 IRQ callback |
|
70 |
*/ |
|
71 |
void SX126xSetPollingMode( void ); |
|
72 |
|
|
73 |
/*! |
|
74 |
* \brief DIO 0 IRQ callback |
|
75 |
*/ |
|
76 |
void SX126xSetInterruptMode( void ); |
|
77 |
|
|
78 |
/* |
|
79 |
* \brief Process the IRQ if handled by the driver |
|
80 |
*/ |
|
81 |
void SX126xProcessIrqs( void ); |
|
82 |
|
|
83 |
|
|
84 |
void SX126xInit( DioIrqHandler dioIrq ) |
|
85 |
{ |
|
86 |
SX126xReset( ); |
|
87 |
SX126xWakeup( ); |
|
88 |
SX126xSetStandby( STDBY_RC ); |
|
89 |
|
|
90 |
#ifdef USE_TCXO |
|
91 |
CalibrationParams_t calibParam; |
|
92 |
|
|
93 |
SX126xSetDio3AsTcxoCtrl( TCXO_CTRL_1_7V, RADIO_TCXO_SETUP_TIME << 6 ); // convert from ms to SX126x time base |
|
94 |
calibParam.Value = 0x7F; |
|
95 |
SX126xCalibrate( calibParam ); |
|
96 |
|
|
97 |
#endif |
|
98 |
|
|
99 |
SX126xSetDio2AsRfSwitchCtrl( true ); |
|
100 |
OperatingMode = MODE_STDBY_RC; |
|
101 |
} |
|
102 |
|
|
103 |
RadioOperatingModes_t SX126xGetOperatingMode( void ) |
|
104 |
{ |
|
105 |
return OperatingMode; |
|
106 |
} |
|
107 |
|
|
108 |
void SX126xCheckDeviceReady( void ) |
|
109 |
{ |
|
110 |
if( ( SX126xGetOperatingMode( ) == MODE_SLEEP ) || ( SX126xGetOperatingMode( ) == MODE_RX_DC ) ) |
|
111 |
{ |
|
112 |
SX126xWakeup( ); |
|
113 |
// Switch is turned off when device is in sleep mode and turned on is all other modes |
|
114 |
SX126xAntSwOn( ); |
|
115 |
} |
|
116 |
SX126xWaitOnBusy( ); |
|
117 |
} |
|
118 |
|
|
119 |
void SX126xSetPayload( uint8_t *payload, uint8_t size ) |
|
120 |
{ |
|
121 |
SX126xWriteBuffer( 0x00, payload, size ); |
|
122 |
} |
|
123 |
|
|
124 |
uint8_t SX126xGetPayload( uint8_t *buffer, uint8_t *size, uint8_t maxSize ) |
|
125 |
{ |
|
126 |
uint8_t offset = 0; |
|
127 |
|
|
128 |
SX126xGetRxBufferStatus( size, &offset ); |
|
129 |
if( *size > maxSize ) |
|
130 |
{ |
|
131 |
return 1; |
|
132 |
} |
|
133 |
SX126xReadBuffer( offset, buffer, *size ); |
|
134 |
return 0; |
|
135 |
} |
|
136 |
|
|
137 |
void SX126xSendPayload( uint8_t *payload, uint8_t size, uint32_t timeout ) |
|
138 |
{ |
|
139 |
SX126xSetPayload( payload, size ); |
|
140 |
SX126xSetTx( timeout ); |
|
141 |
} |
|
142 |
|
|
143 |
uint8_t SX126xSetSyncWord( uint8_t *syncWord ) |
|
144 |
{ |
|
145 |
SX126xWriteRegisters( REG_LR_SYNCWORDBASEADDRESS, syncWord, 8 ); |
|
146 |
return 0; |
|
147 |
} |
|
148 |
|
|
149 |
void SX126xSetCrcSeed( uint16_t seed ) |
|
150 |
{ |
|
151 |
uint8_t buf[2]; |
|
152 |
|
|
153 |
buf[0] = ( uint8_t )( ( seed >> 8 ) & 0xFF ); |
|
154 |
buf[1] = ( uint8_t )( seed & 0xFF ); |
|
155 |
|
|
156 |
switch( SX126xGetPacketType( ) ) |
|
157 |
{ |
|
158 |
case PACKET_TYPE_GFSK: |
|
159 |
SX126xWriteRegisters( REG_LR_CRCSEEDBASEADDR, buf, 2 ); |
|
160 |
break; |
|
161 |
|
|
162 |
default: |
|
163 |
break; |
|
164 |
} |
|
165 |
} |
|
166 |
|
|
167 |
void SX126xSetCrcPolynomial( uint16_t polynomial ) |
|
168 |
{ |
|
169 |
uint8_t buf[2]; |
|
170 |
|
|
171 |
buf[0] = ( uint8_t )( ( polynomial >> 8 ) & 0xFF ); |
|
172 |
buf[1] = ( uint8_t )( polynomial & 0xFF ); |
|
173 |
|
|
174 |
switch( SX126xGetPacketType( ) ) |
|
175 |
{ |
|
176 |
case PACKET_TYPE_GFSK: |
|
177 |
SX126xWriteRegisters( REG_LR_CRCPOLYBASEADDR, buf, 2 ); |
|
178 |
break; |
|
179 |
|
|
180 |
default: |
|
181 |
break; |
|
182 |
} |
|
183 |
} |
|
184 |
|
|
185 |
void SX126xSetWhiteningSeed( uint16_t seed ) |
|
186 |
{ |
|
187 |
uint8_t regValue = 0; |
|
188 |
|
|
189 |
switch( SX126xGetPacketType( ) ) |
|
190 |
{ |
|
191 |
case PACKET_TYPE_GFSK: |
|
192 |
regValue = SX126xReadRegister( REG_LR_WHITSEEDBASEADDR_MSB ) & 0xFE; |
|
193 |
regValue = ( ( seed >> 8 ) & 0x01 ) | regValue; |
|
194 |
SX126xWriteRegister( REG_LR_WHITSEEDBASEADDR_MSB, regValue ); // only 1 bit. |
|
195 |
SX126xWriteRegister( REG_LR_WHITSEEDBASEADDR_LSB, ( uint8_t )seed ); |
|
196 |
break; |
|
197 |
|
|
198 |
default: |
|
199 |
break; |
|
200 |
} |
|
201 |
} |
|
202 |
|
|
203 |
uint32_t SX126xGetRandom( void ) |
|
204 |
{ |
|
205 |
uint8_t buf[] = { 0, 0, 0, 0 }; |
|
206 |
|
|
207 |
// Set radio in continuous reception |
|
208 |
SX126xSetRx( 0 ); |
|
209 |
|
|
210 |
HAL_Delay_nMS( 1 ); |
|
211 |
|
|
212 |
SX126xReadRegisters( RANDOM_NUMBER_GENERATORBASEADDR, buf, 4 ); |
|
213 |
|
|
214 |
SX126xSetStandby( STDBY_RC ); |
|
215 |
|
|
216 |
return ( buf[0] << 24 ) | ( buf[1] << 16 ) | ( buf[2] << 8 ) | buf[3]; |
|
217 |
} |
|
218 |
|
|
219 |
void SX126xSetSleep( SleepParams_t sleepConfig ) |
|
220 |
{ |
|
221 |
SX126xAntSwOff( ); |
|
222 |
|
|
223 |
SX126xWriteCommand( RADIO_SET_SLEEP, &sleepConfig.Value, 1 ); |
|
224 |
OperatingMode = MODE_SLEEP; |
|
225 |
} |
|
226 |
|
|
227 |
void SX126xSetStandby( RadioStandbyModes_t standbyConfig ) |
|
228 |
{ |
|
229 |
SX126xWriteCommand( RADIO_SET_STANDBY, ( uint8_t* )&standbyConfig, 1 ); |
|
230 |
if( standbyConfig == STDBY_RC ) |
|
231 |
{ |
|
232 |
OperatingMode = MODE_STDBY_RC; |
|
233 |
} |
|
234 |
else |
|
235 |
{ |
|
236 |
OperatingMode = MODE_STDBY_XOSC; |
|
237 |
} |
|
238 |
} |
|
239 |
|
|
240 |
void SX126xSetFs( void ) |
|
241 |
{ |
|
242 |
SX126xWriteCommand( RADIO_SET_FS, 0, 0 ); |
|
243 |
OperatingMode = MODE_FS; |
|
244 |
} |
|
245 |
|
|
246 |
void SX126xSetTx( uint32_t timeout ) |
|
247 |
{ |
|
248 |
uint8_t buf[3]; |
|
249 |
|
|
250 |
OperatingMode = MODE_TX; |
|
251 |
|
|
252 |
buf[0] = ( uint8_t )( ( timeout >> 16 ) & 0xFF ); |
|
253 |
buf[1] = ( uint8_t )( ( timeout >> 8 ) & 0xFF ); |
|
254 |
buf[2] = ( uint8_t )( timeout & 0xFF ); |
|
255 |
SX126xWriteCommand( RADIO_SET_TX, buf, 3 ); |
|
256 |
} |
|
257 |
|
|
258 |
void SX126xSetRx( uint32_t timeout ) |
|
259 |
{ |
|
260 |
uint8_t buf[3]; |
|
261 |
|
|
262 |
OperatingMode = MODE_RX; |
|
263 |
|
|
264 |
buf[0] = ( uint8_t )( ( timeout >> 16 ) & 0xFF ); |
|
265 |
buf[1] = ( uint8_t )( ( timeout >> 8 ) & 0xFF ); |
|
266 |
buf[2] = ( uint8_t )( timeout & 0xFF ); |
|
267 |
SX126xWriteCommand( RADIO_SET_RX, buf, 3 ); |
|
268 |
} |
|
269 |
|
|
270 |
void SX126xSetRxBoosted( uint32_t timeout ) |
|
271 |
{ |
|
272 |
uint8_t buf[3]; |
|
273 |
|
|
274 |
OperatingMode = MODE_RX; |
|
275 |
|
|
276 |
SX126xWriteRegister( REG_RX_GAIN, 0x96 ); // max LNA gain, increase current by ~2mA for around ~3dB in sensivity |
|
277 |
|
|
278 |
buf[0] = ( uint8_t )( ( timeout >> 16 ) & 0xFF ); |
|
279 |
buf[1] = ( uint8_t )( ( timeout >> 8 ) & 0xFF ); |
|
280 |
buf[2] = ( uint8_t )( timeout & 0xFF ); |
|
281 |
SX126xWriteCommand( RADIO_SET_RX, buf, 3 ); |
|
282 |
} |
|
283 |
|
|
284 |
void SX126xSetRxDutyCycle( uint32_t rxTime, uint32_t sleepTime ) |
|
285 |
{ |
|
286 |
uint8_t buf[6]; |
|
287 |
|
|
288 |
buf[0] = ( uint8_t )( ( rxTime >> 16 ) & 0xFF ); |
|
289 |
buf[1] = ( uint8_t )( ( rxTime >> 8 ) & 0xFF ); |
|
290 |
buf[2] = ( uint8_t )( rxTime & 0xFF ); |
|
291 |
buf[3] = ( uint8_t )( ( sleepTime >> 16 ) & 0xFF ); |
|
292 |
buf[4] = ( uint8_t )( ( sleepTime >> 8 ) & 0xFF ); |
|
293 |
buf[5] = ( uint8_t )( sleepTime & 0xFF ); |
|
294 |
SX126xWriteCommand( RADIO_SET_RXDUTYCYCLE, buf, 6 ); |
|
295 |
OperatingMode = MODE_RX_DC; |
|
296 |
} |
|
297 |
|
|
298 |
void SX126xSetCad( void ) |
|
299 |
{ |
|
300 |
SX126xWriteCommand( RADIO_SET_CAD, 0, 0 ); |
|
301 |
OperatingMode = MODE_CAD; |
|
302 |
} |
|
303 |
|
|
304 |
void SX126xSetTxContinuousWave( void ) |
|
305 |
{ |
|
306 |
SX126xWriteCommand( RADIO_SET_TXCONTINUOUSWAVE, 0, 0 ); |
|
307 |
} |
|
308 |
|
|
309 |
void SX126xSetTxInfinitePreamble( void ) |
|
310 |
{ |
|
311 |
SX126xWriteCommand( RADIO_SET_TXCONTINUOUSPREAMBLE, 0, 0 ); |
|
312 |
} |
|
313 |
|
|
314 |
void SX126xSetStopRxTimerOnPreambleDetect( bool enable ) |
|
315 |
{ |
|
316 |
SX126xWriteCommand( RADIO_SET_STOPRXTIMERONPREAMBLE, ( uint8_t* )&enable, 1 ); |
|
317 |
} |
|
318 |
|
|
319 |
void SX126xSetLoRaSymbNumTimeout( uint8_t SymbNum ) |
|
320 |
{ |
|
321 |
SX126xWriteCommand( RADIO_SET_LORASYMBTIMEOUT, &SymbNum, 1 ); |
|
322 |
} |
|
323 |
|
|
324 |
void SX126xSetRegulatorMode( RadioRegulatorMode_t mode ) |
|
325 |
{ |
|
326 |
SX126xWriteCommand( RADIO_SET_REGULATORMODE, ( uint8_t* )&mode, 1 ); |
|
327 |
} |
|
328 |
|
|
329 |
void SX126xCalibrate( CalibrationParams_t calibParam ) |
|
330 |
{ |
|
331 |
SX126xWriteCommand( RADIO_CALIBRATE, ( uint8_t* )&calibParam, 1 ); |
|
332 |
} |
|
333 |
|
|
334 |
void SX126xCalibrateImage( uint32_t freq ) |
|
335 |
{ |
|
336 |
uint8_t calFreq[2]; |
|
337 |
|
|
338 |
if( freq > 900000000 ) |
|
339 |
{ |
|
340 |
calFreq[0] = 0xE1; |
|
341 |
calFreq[1] = 0xE9; |
|
342 |
} |
|
343 |
else if( freq > 850000000 ) |
|
344 |
{ |
|
345 |
calFreq[0] = 0xD7; |
|
346 |
calFreq[1] = 0xD8; |
|
347 |
} |
|
348 |
else if( freq > 770000000 ) |
|
349 |
{ |
|
350 |
calFreq[0] = 0xC1; |
|
351 |
calFreq[1] = 0xC5; |
|
352 |
} |
|
353 |
else if( freq > 460000000 ) |
|
354 |
{ |
|
355 |
calFreq[0] = 0x75; |
|
356 |
calFreq[1] = 0x81; |
|
357 |
} |
|
358 |
else if( freq > 425000000 ) |
|
359 |
{ |
|
360 |
calFreq[0] = 0x6B; |
|
361 |
calFreq[1] = 0x6F; |
|
362 |
} |
|
363 |
SX126xWriteCommand( RADIO_CALIBRATEIMAGE, calFreq, 2 ); |
|
364 |
} |
|
365 |
|
|
366 |
void SX126xSetPaConfig( uint8_t paDutyCycle, uint8_t hpMax, uint8_t deviceSel, uint8_t paLut ) |
|
367 |
{ |
|
368 |
uint8_t buf[4]; |
|
369 |
|
|
370 |
buf[0] = paDutyCycle; |
|
371 |
buf[1] = hpMax; |
|
372 |
buf[2] = deviceSel; |
|
373 |
buf[3] = paLut; |
|
374 |
SX126xWriteCommand( RADIO_SET_PACONFIG, buf, 4 ); |
|
375 |
} |
|
376 |
|
|
377 |
void SX126xSetRxTxFallbackMode( uint8_t fallbackMode ) |
|
378 |
{ |
|
379 |
SX126xWriteCommand( RADIO_SET_TXFALLBACKMODE, &fallbackMode, 1 ); |
|
380 |
} |
|
381 |
|
|
382 |
void SX126xSetDioIrqParams( uint16_t irqMask, uint16_t dio1Mask, uint16_t dio2Mask, uint16_t dio3Mask ) |
|
383 |
{ |
|
384 |
uint8_t buf[8]; |
|
385 |
|
|
386 |
buf[0] = ( uint8_t )( ( irqMask >> 8 ) & 0x00FF ); |
|
387 |
buf[1] = ( uint8_t )( irqMask & 0x00FF ); |
|
388 |
buf[2] = ( uint8_t )( ( dio1Mask >> 8 ) & 0x00FF ); |
|
389 |
buf[3] = ( uint8_t )( dio1Mask & 0x00FF ); |
|
390 |
buf[4] = ( uint8_t )( ( dio2Mask >> 8 ) & 0x00FF ); |
|
391 |
buf[5] = ( uint8_t )( dio2Mask & 0x00FF ); |
|
392 |
buf[6] = ( uint8_t )( ( dio3Mask >> 8 ) & 0x00FF ); |
|
393 |
buf[7] = ( uint8_t )( dio3Mask & 0x00FF ); |
|
394 |
SX126xWriteCommand( RADIO_CFG_DIOIRQ, buf, 8 ); |
|
395 |
} |
|
396 |
|
|
397 |
uint16_t SX126xGetIrqStatus( void ) |
|
398 |
{ |
|
399 |
uint8_t irqStatus[2]; |
|
400 |
|
|
401 |
SX126xReadCommand( RADIO_GET_IRQSTATUS, irqStatus, 2 ); |
|
402 |
return ( irqStatus[0] << 8 ) | irqStatus[1]; |
|
403 |
} |
|
404 |
|
|
405 |
void SX126xSetDio2AsRfSwitchCtrl( uint8_t enable ) |
|
406 |
{ |
|
407 |
SX126xWriteCommand( RADIO_SET_RFSWITCHMODE, &enable, 1 ); |
|
408 |
} |
|
409 |
|
|
410 |
void SX126xSetDio3AsTcxoCtrl( RadioTcxoCtrlVoltage_t tcxoVoltage, uint32_t timeout ) |
|
411 |
{ |
|
412 |
uint8_t buf[4]; |
|
413 |
|
|
414 |
buf[0] = tcxoVoltage & 0x07; |
|
415 |
buf[1] = ( uint8_t )( ( timeout >> 16 ) & 0xFF ); |
|
416 |
buf[2] = ( uint8_t )( ( timeout >> 8 ) & 0xFF ); |
|
417 |
buf[3] = ( uint8_t )( timeout & 0xFF ); |
|
418 |
|
|
419 |
SX126xWriteCommand( RADIO_SET_TCXOMODE, buf, 4 ); |
|
420 |
} |
|
421 |
|
|
422 |
void SX126xSetRfFrequency( uint32_t frequency ) |
|
423 |
{ |
|
424 |
uint8_t buf[4]; |
|
425 |
uint32_t freq = 0; |
|
426 |
|
|
427 |
if( ImageCalibrated == false ) |
|
428 |
{ |
|
429 |
SX126xCalibrateImage( frequency ); |
|
430 |
ImageCalibrated = true; |
|
431 |
} |
|
432 |
|
|
433 |
freq = ( uint32_t )( ( double )frequency / ( double )FREQ_STEP ); |
|
434 |
buf[0] = ( uint8_t )( ( freq >> 24 ) & 0xFF ); |
|
435 |
buf[1] = ( uint8_t )( ( freq >> 16 ) & 0xFF ); |
|
436 |
buf[2] = ( uint8_t )( ( freq >> 8 ) & 0xFF ); |
|
437 |
buf[3] = ( uint8_t )( freq & 0xFF ); |
|
438 |
SX126xWriteCommand( RADIO_SET_RFFREQUENCY, buf, 4 ); |
|
439 |
} |
|
440 |
|
|
441 |
void SX126xSetPacketType( RadioPacketTypes_t packetType ) |
|
442 |
{ |
|
443 |
// Save packet type internally to avoid questioning the radio |
|
444 |
PacketType = packetType; |
|
445 |
SX126xWriteCommand( RADIO_SET_PACKETTYPE, ( uint8_t* )&packetType, 1 ); |
|
446 |
} |
|
447 |
|
|
448 |
RadioPacketTypes_t SX126xGetPacketType( void ) |
|
449 |
{ |
|
450 |
return PacketType; |
|
451 |
} |
|
452 |
|
|
453 |
void SX126xSetTxParams( int8_t power, RadioRampTimes_t rampTime ) |
|
454 |
{ |
|
455 |
uint8_t buf[2]; |
|
456 |
|
|
457 |
if( SX126xGetPaSelect( 0 ) == SX1261 ) |
|
458 |
{ |
|
459 |
if( power == 15 ) |
|
460 |
{ |
|
461 |
SX126xSetPaConfig( 0x06, 0x00, 0x01, 0x01 ); |
|
462 |
} |
|
463 |
else |
|
464 |
{ |
|
465 |
SX126xSetPaConfig( 0x04, 0x00, 0x01, 0x01 ); |
|
466 |
} |
|
467 |
if( power >= 14 ) |
|
468 |
{ |
|
469 |
power = 14; |
|
470 |
} |
|
471 |
else if( power < -3 ) |
|
472 |
{ |
|
473 |
power = -3; |
|
474 |
} |
|
475 |
SX126xWriteRegister( REG_OCP, 0x18 ); // current max is 80 mA for the whole device |
|
476 |
} |
|
477 |
else // sx1262 |
|
478 |
{ |
|
479 |
SX126xSetPaConfig( 0x04, 0x07, 0x00, 0x01 ); |
|
480 |
if( power > 22 ) |
|
481 |
{ |
|
482 |
power = 22; |
|
483 |
} |
|
484 |
else if( power < -3 ) |
|
485 |
{ |
|
486 |
power = -3; |
|
487 |
} |
|
488 |
SX126xWriteRegister( REG_OCP, 0x38 ); // current max 160mA for the whole device |
|
489 |
} |
|
490 |
buf[0] = power; |
|
491 |
buf[1] = ( uint8_t )rampTime; |
|
492 |
SX126xWriteCommand( RADIO_SET_TXPARAMS, buf, 2 ); |
|
493 |
} |
|
494 |
|
|
495 |
void SX126xSetModulationParams( ModulationParams_t *modulationParams ) |
|
496 |
{ |
|
497 |
uint8_t n; |
|
498 |
uint32_t tempVal = 0; |
|
499 |
uint8_t buf[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
|
500 |
|
|
501 |
// Check if required configuration corresponds to the stored packet type |
|
502 |
// If not, silently update radio packet type |
|
503 |
if( PacketType != modulationParams->PacketType ) |
|
504 |
{ |
|
505 |
SX126xSetPacketType( modulationParams->PacketType ); |
|
506 |
} |
|
507 |
|
|
508 |
switch( modulationParams->PacketType ) |
|
509 |
{ |
|
510 |
case PACKET_TYPE_GFSK: |
|
511 |
n = 8; |
|
512 |
tempVal = ( uint32_t )( 32 * ( ( double )XTAL_FREQ / ( double )modulationParams->Params.Gfsk.BitRate ) ); |
|
513 |
buf[0] = ( tempVal >> 16 ) & 0xFF; |
|
514 |
buf[1] = ( tempVal >> 8 ) & 0xFF; |
|
515 |
buf[2] = tempVal & 0xFF; |
|
516 |
buf[3] = modulationParams->Params.Gfsk.ModulationShaping; |
|
517 |
buf[4] = modulationParams->Params.Gfsk.Bandwidth; |
|
518 |
tempVal = ( uint32_t )( ( double )modulationParams->Params.Gfsk.Fdev / ( double )FREQ_STEP ); |
|
519 |
buf[5] = ( tempVal >> 16 ) & 0xFF; |
|
520 |
buf[6] = ( tempVal >> 8 ) & 0xFF; |
|
521 |
buf[7] = ( tempVal& 0xFF ); |
|
522 |
SX126xWriteCommand( RADIO_SET_MODULATIONPARAMS, buf, n ); |
|
523 |
break; |
|
524 |
case PACKET_TYPE_LORA: |
|
525 |
n = 4; |
|
526 |
buf[0] = modulationParams->Params.LoRa.SpreadingFactor; |
|
527 |
buf[1] = modulationParams->Params.LoRa.Bandwidth; |
|
528 |
buf[2] = modulationParams->Params.LoRa.CodingRate; |
|
529 |
buf[3] = modulationParams->Params.LoRa.LowDatarateOptimize; |
|
530 |
|
|
531 |
SX126xWriteCommand( RADIO_SET_MODULATIONPARAMS, buf, n ); |
|
532 |
|
|
533 |
break; |
|
534 |
default: |
|
535 |
case PACKET_TYPE_NONE: |
|
536 |
return; |
|
537 |
} |
|
538 |
} |
|
539 |
|
|
540 |
void SX126xSetPacketParams( PacketParams_t *packetParams ) |
|
541 |
{ |
|
542 |
uint8_t n; |
|
543 |
uint8_t crcVal = 0; |
|
544 |
uint8_t buf[9] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
|
545 |
|
|
546 |
// Check if required configuration corresponds to the stored packet type |
|
547 |
// If not, silently update radio packet type |
|
548 |
if( PacketType != packetParams->PacketType ) |
|
549 |
{ |
|
550 |
SX126xSetPacketType( packetParams->PacketType ); |
|
551 |
} |
|
552 |
|
|
553 |
switch( packetParams->PacketType ) |
|
554 |
{ |
|
555 |
case PACKET_TYPE_GFSK: |
|
556 |
if( packetParams->Params.Gfsk.CrcLength == RADIO_CRC_2_BYTES_IBM ) |
|
557 |
{ |
|
558 |
SX126xSetCrcSeed( CRC_IBM_SEED ); |
|
559 |
SX126xSetCrcPolynomial( CRC_POLYNOMIAL_IBM ); |
|
560 |
crcVal = RADIO_CRC_2_BYTES; |
|
561 |
} |
|
562 |
else if( packetParams->Params.Gfsk.CrcLength == RADIO_CRC_2_BYTES_CCIT ) |
|
563 |
{ |
|
564 |
SX126xSetCrcSeed( CRC_CCITT_SEED ); |
|
565 |
SX126xSetCrcPolynomial( CRC_POLYNOMIAL_CCITT ); |
|
566 |
crcVal = RADIO_CRC_2_BYTES_INV; |
|
567 |
} |
|
568 |
else |
|
569 |
{ |
|
570 |
crcVal = packetParams->Params.Gfsk.CrcLength; |
|
571 |
} |
|
572 |
n = 9; |
|
573 |
buf[0] = ( packetParams->Params.Gfsk.PreambleLength >> 8 ) & 0xFF; |
|
574 |
buf[1] = packetParams->Params.Gfsk.PreambleLength; |
|
575 |
buf[2] = packetParams->Params.Gfsk.PreambleMinDetect; |
|
576 |
buf[3] = ( packetParams->Params.Gfsk.SyncWordLength /*<< 3*/ ); // convert from byte to bit |
|
577 |
buf[4] = packetParams->Params.Gfsk.AddrComp; |
|
578 |
buf[5] = packetParams->Params.Gfsk.HeaderType; |
|
579 |
buf[6] = packetParams->Params.Gfsk.PayloadLength; |
|
580 |
buf[7] = crcVal; |
|
581 |
buf[8] = packetParams->Params.Gfsk.DcFree; |
|
582 |
break; |
|
583 |
case PACKET_TYPE_LORA: |
|
584 |
n = 6; |
|
585 |
buf[0] = ( packetParams->Params.LoRa.PreambleLength >> 8 ) & 0xFF; |
|
586 |
buf[1] = packetParams->Params.LoRa.PreambleLength; |
|
587 |
buf[2] = packetParams->Params.LoRa.HeaderType; |
|
588 |
buf[3] = packetParams->Params.LoRa.PayloadLength; |
|
589 |
buf[4] = packetParams->Params.LoRa.CrcMode; |
|
590 |
buf[5] = packetParams->Params.LoRa.InvertIQ; |
|
591 |
break; |
|
592 |
default: |
|
593 |
case PACKET_TYPE_NONE: |
|
594 |
return; |
|
595 |
} |
|
596 |
SX126xWriteCommand( RADIO_SET_PACKETPARAMS, buf, n ); |
|
597 |
} |
|
598 |
|
|
599 |
void SX126xSetCadParams( RadioLoRaCadSymbols_t cadSymbolNum, uint8_t cadDetPeak, uint8_t cadDetMin, RadioCadExitModes_t cadExitMode, uint32_t cadTimeout ) |
|
600 |
{ |
|
601 |
uint8_t buf[7]; |
|
602 |
|
|
603 |
buf[0] = ( uint8_t )cadSymbolNum; |
|
604 |
buf[1] = cadDetPeak; |
|
605 |
buf[2] = cadDetMin; |
|
606 |
buf[3] = ( uint8_t )cadExitMode; |
|
607 |
buf[4] = ( uint8_t )( ( cadTimeout >> 16 ) & 0xFF ); |
|
608 |
buf[5] = ( uint8_t )( ( cadTimeout >> 8 ) & 0xFF ); |
|
609 |
buf[6] = ( uint8_t )( cadTimeout & 0xFF ); |
|
610 |
SX126xWriteCommand( RADIO_SET_CADPARAMS, buf, 5 ); |
|
611 |
OperatingMode = MODE_CAD; |
|
612 |
} |
|
613 |
|
|
614 |
void SX126xSetBufferBaseAddress( uint8_t txBaseAddress, uint8_t rxBaseAddress ) |
|
615 |
{ |
|
616 |
uint8_t buf[2]; |
|
617 |
|
|
618 |
buf[0] = txBaseAddress; |
|
619 |
buf[1] = rxBaseAddress; |
|
620 |
SX126xWriteCommand( RADIO_SET_BUFFERBASEADDRESS, buf, 2 ); |
|
621 |
} |
|
622 |
|
|
623 |
RadioStatus_t SX126xGetStatus( void ) |
|
624 |
{ |
|
625 |
uint8_t stat = 0; |
|
626 |
RadioStatus_t status; |
|
627 |
|
|
628 |
SX126xReadCommand( RADIO_GET_STATUS, ( uint8_t * )&stat, 1 ); |
|
629 |
status.Value = stat; |
|
630 |
return status; |
|
631 |
} |
|
632 |
|
|
633 |
int8_t SX126xGetRssiInst( void ) |
|
634 |
{ |
|
635 |
uint8_t buf[1]; |
|
636 |
int8_t rssi = 0; |
|
637 |
|
|
638 |
SX126xReadCommand( RADIO_GET_RSSIINST, buf, 1 ); |
|
639 |
rssi = -buf[0] >> 1; |
|
640 |
return rssi; |
|
641 |
} |
|
642 |
|
|
643 |
void SX126xGetRxBufferStatus( uint8_t *payloadLength, uint8_t *rxStartBufferPointer ) |
|
644 |
{ |
|
645 |
uint8_t status[2]; |
|
646 |
|
|
647 |
SX126xReadCommand( RADIO_GET_RXBUFFERSTATUS, status, 2 ); |
|
648 |
|
|
649 |
// In case of LORA fixed header, the payloadLength is obtained by reading |
|
650 |
// the register REG_LR_PAYLOADLENGTH |
|
651 |
if( ( SX126xGetPacketType( ) == PACKET_TYPE_LORA ) && ( SX126xReadRegister( REG_LR_PACKETPARAMS ) >> 7 == 1 ) ) |
|
652 |
{ |
|
653 |
*payloadLength = SX126xReadRegister( REG_LR_PAYLOADLENGTH ); |
|
654 |
} |
|
655 |
else |
|
656 |
{ |
|
657 |
*payloadLength = status[0]; |
|
658 |
} |
|
659 |
*rxStartBufferPointer = status[1]; |
|
660 |
} |
|
661 |
|
|
662 |
void SX126xGetPacketStatus( PacketStatus_t *pktStatus ) |
|
663 |
{ |
|
664 |
uint8_t status[3]; |
|
665 |
|
|
666 |
SX126xReadCommand( RADIO_GET_PACKETSTATUS, status, 3 ); |
|
667 |
|
|
668 |
pktStatus->packetType = SX126xGetPacketType( ); |
|
669 |
switch( pktStatus->packetType ) |
|
670 |
{ |
|
671 |
case PACKET_TYPE_GFSK: |
|
672 |
pktStatus->Params.Gfsk.RxStatus = status[0]; |
|
673 |
pktStatus->Params.Gfsk.RssiSync = -status[1] >> 1; |
|
674 |
pktStatus->Params.Gfsk.RssiAvg = -status[2] >> 1; |
|
675 |
pktStatus->Params.Gfsk.FreqError = 0; |
|
676 |
break; |
|
677 |
|
|
678 |
case PACKET_TYPE_LORA: |
|
679 |
pktStatus->Params.LoRa.RssiPkt = -status[0] >> 1; |
|
680 |
( status[1] < 128 ) ? ( pktStatus->Params.LoRa.SnrPkt = status[1] >> 2 ) : ( pktStatus->Params.LoRa.SnrPkt = ( ( status[1] - 256 ) >> 2 ) ); |
|
681 |
pktStatus->Params.LoRa.SignalRssiPkt = -status[2] >> 1; |
|
682 |
pktStatus->Params.LoRa.FreqError = FrequencyError; |
|
683 |
break; |
|
684 |
|
|
685 |
default: |
|
686 |
case PACKET_TYPE_NONE: |
|
687 |
// In that specific case, we set everything in the pktStatus to zeros |
|
688 |
// and reset the packet type accordingly |
|
689 |
memset( pktStatus, 0, sizeof( PacketStatus_t ) ); |
|
690 |
pktStatus->packetType = PACKET_TYPE_NONE; |
|
691 |
break; |
|
692 |
} |
|
693 |
} |
|
694 |
|
|
695 |
RadioError_t SX126xGetDeviceErrors( void ) |
|
696 |
{ |
|
697 |
RadioError_t error; |
|
698 |
|
|
699 |
SX126xReadCommand( RADIO_GET_ERROR, ( uint8_t * )&error, 2 ); |
|
700 |
return error; |
|
701 |
} |
|
702 |
|
|
703 |
void SX126xClearDeviceErrors( void ) |
|
704 |
{ |
|
705 |
uint8_t buf[2] = { 0x00, 0x00 }; |
|
706 |
SX126xWriteCommand( RADIO_CLR_ERROR, buf, 2 ); |
|
707 |
} |
|
708 |
|
|
709 |
void SX126xClearIrqStatus( uint16_t irq ) |
|
710 |
{ |
|
711 |
uint8_t buf[2]; |
|
712 |
|
|
713 |
buf[0] = ( uint8_t )( ( ( uint16_t )irq >> 8 ) & 0x00FF ); |
|
714 |
buf[1] = ( uint8_t )( ( uint16_t )irq & 0x00FF ); |
|
715 |
SX126xWriteCommand( RADIO_CLR_IRQSTATUS, buf, 2 ); |
|
716 |
} |