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[SX127x] Added methods to manually set LoRa LDRO (#162)

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This commit is contained in:
jgromes 2020-07-08 18:52:34 +02:00
parent 96405b938d
commit 58194483b1
4 changed files with 128 additions and 35 deletions
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61
src/modules/SX127x/SX1272.cpp
View file

@ -106,15 +106,17 @@ int16_t SX1272::setBandwidth(float bw) {
if(state == ERR_NONE) {
SX127x::_bw = bw;
// calculate symbol length and set low data rate optimization, if needed
float symbolLength = (float)(uint32_t(1) << SX127x::_sf) / (float)SX127x::_bw;
RADIOLIB_DEBUG_PRINT("Symbol length: ");
RADIOLIB_DEBUG_PRINT(symbolLength);
RADIOLIB_DEBUG_PRINTLN(" ms");
if(symbolLength >= 16.0) {
state = _mod->SPIsetRegValue(SX127X_REG_MODEM_CONFIG_1, SX1272_LOW_DATA_RATE_OPT_ON, 0, 0);
} else {
state = _mod->SPIsetRegValue(SX127X_REG_MODEM_CONFIG_1, SX1272_LOW_DATA_RATE_OPT_OFF, 0, 0);
// calculate symbol length and set low data rate optimization, if auto-configuration is enabled
if(_ldroAuto) {
float symbolLength = (float)(uint32_t(1) << SX127x::_sf) / (float)SX127x::_bw;
RADIOLIB_DEBUG_PRINT("Symbol length: ");
RADIOLIB_DEBUG_PRINT(symbolLength);
RADIOLIB_DEBUG_PRINTLN(" ms");
if(symbolLength >= 16.0) {
state = _mod->SPIsetRegValue(SX127X_REG_MODEM_CONFIG_1, SX1272_LOW_DATA_RATE_OPT_ON, 0, 0);
} else {
state = _mod->SPIsetRegValue(SX127X_REG_MODEM_CONFIG_1, SX1272_LOW_DATA_RATE_OPT_OFF, 0, 0);
}
}
}
return(state);
@ -160,15 +162,17 @@ int16_t SX1272::setSpreadingFactor(uint8_t sf) {
if(state == ERR_NONE) {
SX127x::_sf = sf;
// calculate symbol length and set low data rate optimization, if needed
// calculate symbol length and set low data rate optimization, if auto-configuration is enabled
if(_ldroAuto) {
float symbolLength = (float)(uint32_t(1) << SX127x::_sf) / (float)SX127x::_bw;
RADIOLIB_DEBUG_PRINT("Symbol length: ");
RADIOLIB_DEBUG_PRINT(symbolLength);
RADIOLIB_DEBUG_PRINTLN(" ms");
if(symbolLength >= 16.0) {
state = _mod->SPIsetRegValue(SX127X_REG_MODEM_CONFIG_1, SX1272_LOW_DATA_RATE_OPT_ON, 0, 0);
} else {
state = _mod->SPIsetRegValue(SX127X_REG_MODEM_CONFIG_1, SX1272_LOW_DATA_RATE_OPT_OFF, 0, 0);
RADIOLIB_DEBUG_PRINT("Symbol length: ");
RADIOLIB_DEBUG_PRINT(symbolLength);
RADIOLIB_DEBUG_PRINTLN(" ms");
if(symbolLength >= 16.0) {
state = _mod->SPIsetRegValue(SX127X_REG_MODEM_CONFIG_1, SX1272_LOW_DATA_RATE_OPT_ON, 0, 0);
} else {
state = _mod->SPIsetRegValue(SX127X_REG_MODEM_CONFIG_1, SX1272_LOW_DATA_RATE_OPT_OFF, 0, 0);
}
}
}
return(state);
@ -372,6 +376,29 @@ int16_t SX1272::setCRC(bool enableCRC) {
}
}
int16_t SX1272::forceLDRO(bool enable) {
if(getActiveModem() != SX127X_LORA) {
return(ERR_WRONG_MODEM);
}
_ldroAuto = false;
if(enable) {
return(_mod->SPIsetRegValue(SX127X_REG_MODEM_CONFIG_1, SX1272_LOW_DATA_RATE_OPT_ON, 0, 0));
} else {
return(_mod->SPIsetRegValue(SX127X_REG_MODEM_CONFIG_1, SX1272_LOW_DATA_RATE_OPT_OFF, 0, 0));
}
}
int16_t SX1272::autoLDRO() {
if(getActiveModem() != SX127X_LORA) {
return(ERR_WRONG_MODEM);
}
_ldroAuto = true;
return(ERR_NONE);
}
int16_t SX1272::setBandwidthRaw(uint8_t newBandwidth) {
// set mode to standby
int16_t state = SX127x::standby();

20
src/modules/SX127x/SX1272.h
View file

@ -253,6 +253,24 @@ class SX1272: public SX127x {
*/
int16_t setCRC(bool enableCRC);
/*!
\brief Forces LoRa low data rate optimization. Only available in LoRa mode. After calling this method, LDRO will always be set to
the provided value, regardless of symbol length. To re-enable automatic LDRO configuration, call SX1278::autoLDRO()
\param enable Force LDRO to be always enabled (true) or disabled (false).
\returns \ref status_codes
*/
int16_t forceLDRO(bool enable);
/*!
\brief Re-enables automatic LDRO configuration. Only available in LoRa mode. After calling this method, LDRO will be enabled automatically
when symbol length exceeds 16 ms.
\returns \ref status_codes
*/
int16_t autoLDRO();
#ifndef RADIOLIB_GODMODE
protected:
#endif
@ -265,6 +283,8 @@ class SX1272: public SX127x {
#ifndef RADIOLIB_GODMODE
private:
#endif
bool _ldroAuto = true;
bool _ldroEnabled = false;
};

62
src/modules/SX127x/SX1278.cpp
View file

@ -178,15 +178,17 @@ int16_t SX1278::setBandwidth(float bw) {
if(state == ERR_NONE) {
SX127x::_bw = bw;
// calculate symbol length and set low data rate optimization, if needed
float symbolLength = (float)(uint32_t(1) << SX127x::_sf) / (float)SX127x::_bw;
RADIOLIB_DEBUG_PRINT("Symbol length: ");
RADIOLIB_DEBUG_PRINT(symbolLength);
RADIOLIB_DEBUG_PRINTLN(" ms");
if(symbolLength >= 16.0) {
state = _mod->SPIsetRegValue(SX1278_REG_MODEM_CONFIG_3, SX1278_LOW_DATA_RATE_OPT_ON, 3, 3);
} else {
state = _mod->SPIsetRegValue(SX1278_REG_MODEM_CONFIG_3, SX1278_LOW_DATA_RATE_OPT_OFF, 3, 3);
// calculate symbol length and set low data rate optimization, if auto-configuration is enabled
if(_ldroAuto) {
float symbolLength = (float)(uint32_t(1) << SX127x::_sf) / (float)SX127x::_bw;
RADIOLIB_DEBUG_PRINT("Symbol length: ");
RADIOLIB_DEBUG_PRINT(symbolLength);
RADIOLIB_DEBUG_PRINTLN(" ms");
if(symbolLength >= 16.0) {
state = _mod->SPIsetRegValue(SX1278_REG_MODEM_CONFIG_3, SX1278_LOW_DATA_RATE_OPT_ON, 3, 3);
} else {
state = _mod->SPIsetRegValue(SX1278_REG_MODEM_CONFIG_3, SX1278_LOW_DATA_RATE_OPT_OFF, 3, 3);
}
}
}
return(state);
@ -232,15 +234,17 @@ int16_t SX1278::setSpreadingFactor(uint8_t sf) {
if(state == ERR_NONE) {
SX127x::_sf = sf;
// calculate symbol length and set low data rate optimization, if needed
float symbolLength = (float)(uint32_t(1) << SX127x::_sf) / (float)SX127x::_bw;
RADIOLIB_DEBUG_PRINT("Symbol length: ");
RADIOLIB_DEBUG_PRINT(symbolLength);
RADIOLIB_DEBUG_PRINTLN(" ms");
if(symbolLength >= 16.0) {
state = _mod->SPIsetRegValue(SX1278_REG_MODEM_CONFIG_3, SX1278_LOW_DATA_RATE_OPT_ON, 3, 3);
} else {
state = _mod->SPIsetRegValue(SX1278_REG_MODEM_CONFIG_3, SX1278_LOW_DATA_RATE_OPT_OFF, 3, 3);
// calculate symbol length and set low data rate optimization, if auto-configuration is enabled
if(_ldroAuto) {
float symbolLength = (float)(uint32_t(1) << SX127x::_sf) / (float)SX127x::_bw;
RADIOLIB_DEBUG_PRINT("Symbol length: ");
RADIOLIB_DEBUG_PRINT(symbolLength);
RADIOLIB_DEBUG_PRINTLN(" ms");
if(symbolLength >= 16.0) {
state = _mod->SPIsetRegValue(SX1278_REG_MODEM_CONFIG_3, SX1278_LOW_DATA_RATE_OPT_ON, 3, 3);
} else {
state = _mod->SPIsetRegValue(SX1278_REG_MODEM_CONFIG_3, SX1278_LOW_DATA_RATE_OPT_OFF, 3, 3);
}
}
}
return(state);
@ -450,6 +454,28 @@ int16_t SX1278::setCRC(bool enableCRC) {
}
}
int16_t SX1278::forceLDRO(bool enable) {
if(getActiveModem() != SX127X_LORA) {
return(ERR_WRONG_MODEM);
}
_ldroAuto = false;
if(enable) {
return(_mod->SPIsetRegValue(SX1278_REG_MODEM_CONFIG_3, SX1278_LOW_DATA_RATE_OPT_ON, 3, 3));
} else {
return(_mod->SPIsetRegValue(SX1278_REG_MODEM_CONFIG_3, SX1278_LOW_DATA_RATE_OPT_OFF, 3, 3));
}
}
int16_t SX1278::autoLDRO() {
if(getActiveModem() != SX127X_LORA) {
return(ERR_WRONG_MODEM);
}
_ldroAuto = true;
return(ERR_NONE);
}
int16_t SX1278::setBandwidthRaw(uint8_t newBandwidth) {
// set mode to standby
int16_t state = SX127x::standby();

20
src/modules/SX127x/SX1278.h
View file

@ -261,6 +261,24 @@ class SX1278: public SX127x {
*/
int16_t setCRC(bool enableCRC);
/*!
\brief Forces LoRa low data rate optimization. Only available in LoRa mode. After calling this method, LDRO will always be set to
the provided value, regardless of symbol length. To re-enable automatic LDRO configuration, call SX1278::autoLDRO()
\param enable Force LDRO to be always enabled (true) or disabled (false).
\returns \ref status_codes
*/
int16_t forceLDRO(bool enable);
/*!
\brief Re-enables automatic LDRO configuration. Only available in LoRa mode. After calling this method, LDRO will be enabled automatically
when symbol length exceeds 16 ms.
\returns \ref status_codes
*/
int16_t autoLDRO();
#ifndef RADIOLIB_GODMODE
protected:
#endif
@ -273,6 +291,8 @@ class SX1278: public SX127x {
#ifndef RADIOLIB_GODMODE
private:
#endif
bool _ldroAuto = true;
bool _ldroEnabled = false;
};