forks/RadioLibSmol
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Merge pull request #261 from marcinczeczko/sx1278_invertiq

Browse source 
[SX1278] Added method to control InvertIQ
This commit is contained in:
Jan Gromeš 2021-03-03 15:18:23 +01:00 • committed by GitHub
commit 72b6d83f98
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 41 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
keywords.txt
View file

@ -131,6 +131,7 @@ setRfSwitchPins KEYWORD2
forceLDRO KEYWORD2
autoLDRO KEYWORD2
getChipVersion KEYWORD2
invertIQ KEYWORD2
# RF69-specific
setAESKey KEYWORD2

20
src/modules/SX127x/SX127x.cpp
View file

@ -1190,4 +1190,24 @@ void SX127x::clearFIFO(size_t count) {
}
}
int16_t SX127x::invertIQ(bool invertIQ) {
// check active modem
if(getActiveModem() != SX127X_LORA) {
return(ERR_WRONG_MODEM);
}
int16_t state;
if(invertIQ) {
state = _mod->SPIsetRegValue(SX127X_REG_INVERT_IQ, SX127X_INVERT_IQ_RXPATH_ON, 6, 6);
state |= _mod->SPIsetRegValue(SX127X_REG_INVERT_IQ, SX127X_INVERT_IQ_TXPATH_ON, 0, 0);
state |= _mod->SPIsetRegValue(SX127X_REG_INVERT_IQ2, SX127X_IQ2_ENABLE);
} else {
state = _mod->SPIsetRegValue(SX127X_REG_INVERT_IQ, SX127X_INVERT_IQ_RXPATH_OFF, 6, 6);
state |= _mod->SPIsetRegValue(SX127X_REG_INVERT_IQ, SX127X_INVERT_IQ_TXPATH_OFF, 0, 0);
state |= _mod->SPIsetRegValue(SX127X_REG_INVERT_IQ2, SX127X_IQ2_DISABLE);
}
return(state);
}
#endif

20
src/modules/SX127x/SX127x.h
View file

@ -59,6 +59,7 @@
#define SX127X_REG_INVERT_IQ 0x33
#define SX127X_REG_DETECTION_THRESHOLD 0x37
#define SX127X_REG_SYNC_WORD 0x39
#define SX127X_REG_INVERT_IQ2 0x3B
#define SX127X_REG_DIO_MAPPING_1 0x40
#define SX127X_REG_DIO_MAPPING_2 0x41
#define SX127X_REG_VERSION 0x42
@ -122,6 +123,12 @@
#define SX127X_DETECT_OPTIMIZE_SF_6 0b00000101 // 2 0 SF6 detection optimization
#define SX127X_DETECT_OPTIMIZE_SF_7_12 0b00000011 // 2 0 SF7 to SF12 detection optimization
// SX127X_REG_INVERT_IQ
#define SX127X_INVERT_IQ_RXPATH_ON 0b01000000 // 6 6 I and Q signals are inverted
#define SX127X_INVERT_IQ_RXPATH_OFF 0b00000000 // 6 6 normal mode
#define SX127X_INVERT_IQ_TXPATH_ON 0b00000001 // 0 0 I and Q signals are inverted
#define SX127X_INVERT_IQ_TXPATH_OFF 0b00000000 // 0 0 normal mode
// SX127X_REG_DETECTION_THRESHOLD
#define SX127X_DETECTION_THRESHOLD_SF_6 0b00001100 // 7 0 SF6 detection threshold
#define SX127X_DETECTION_THRESHOLD_SF_7_12 0b00001010 // 7 0 SF7 to SF12 detection threshold
@ -172,6 +179,10 @@
#define SX127X_SYNC_WORD 0x12 // 7 0 default LoRa sync word
#define SX127X_SYNC_WORD_LORAWAN 0x34 // 7 0 sync word reserved for LoRaWAN networks
// SX127X_REG_INVERT_IQ2
#define SX127X_IQ2_ENABLE 0x19 // 7 0 enable optimize for inverted IQ
#define SX127X_IQ2_DISABLE 0x1D // 7 0 reset optimize for inverted IQ
// SX127x series common FSK registers
// NOTE: FSK register names that are conflicting with LoRa registers are marked with "_FSK" suffix
#define SX127X_REG_BITRATE_MSB 0x02
@ -945,6 +956,15 @@ class SX127x: public PhysicalLayer {
*/
int16_t getChipVersion();
/*!
\brief Enables/disables Invert the LoRa I and Q signals.
\param invertIQ Enable (true) or disable (false) LoRa I and Q signals.
\returns \ref status_codes
*/
int16_t invertIQ(bool invertIQ);
#ifndef RADIOLIB_GODMODE
protected:
#endif