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[SX127x] Implemented RF switch control

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This commit is contained in:
jgromes 2020-06-18 16:36:11 +02:00
parent 5a3d7a7173
commit 4ad82f1572
3 changed files with 33 additions and 0 deletions
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10
examples/SX127x/SX127x_Transmit/SX127x_Transmit.ino
View file

@ -49,6 +49,16 @@ void setup() {
Serial.println(state);
while (true);
}
// some modules have an external RF switch
// controlled via two pins (RX enable, TX enable)
// to enable automatic control of the switch,
// call the following method
// RX enable: 4
// TX enable: 5
/*
lora.setRfSwitchPins(4, 5);
*/
}
void loop() {

13
src/modules/SX127x/SX127x.cpp
View file

@ -368,6 +368,9 @@ int16_t SX127x::startReceive(uint8_t len, uint8_t mode) {
}
}
// set RF switch (if present)
_mod->setRfSwitchState(false);
// set mode to receive
return(setMode(mode));
}
@ -421,6 +424,9 @@ int16_t SX127x::startTransmit(uint8_t* data, size_t len, uint8_t addr) {
// write packet to FIFO
_mod->SPIwriteRegisterBurst(SX127X_REG_FIFO, data, len);
// set RF switch (if present)
_mod->setRfSwitchState(true);
// start transmission
state |= setMode(SX127X_TX);
RADIOLIB_ASSERT(state);
@ -451,6 +457,9 @@ int16_t SX127x::startTransmit(uint8_t* data, size_t len, uint8_t addr) {
// write packet to FIFO
_mod->SPIwriteRegisterBurst(SX127X_REG_FIFO, data, len);
// set RF switch (if present)
_mod->setRfSwitchState(true);
// start transmission
state |= setMode(SX127X_TX);
RADIOLIB_ASSERT(state);
@ -934,6 +943,10 @@ uint8_t SX127x::getModemStatus() {
return(_mod->SPIreadRegister(SX127X_REG_MODEM_STAT));
}
void SX127x::setRfSwitchPins(RADIOLIB_PIN_TYPE rxEn, RADIOLIB_PIN_TYPE txEn) {
_mod->setRfSwitchPins(rxEn, txEn);
}
int8_t SX127x::getTempRaw() {
int8_t temp = 0;
uint8_t previousOpMode;

10
src/modules/SX127x/SX127x.h
View file

@ -921,6 +921,16 @@ class SX127x: public PhysicalLayer {
*/
int8_t getTempRaw();
/*!
\brief Some modules contain external RF switch controlled by two pins. This function gives RadioLib control over those two pins to automatically switch Rx and Tx state.
When using automatic RF switch control, DO NOT change the pin mode of rxEn or txEn from Arduino sketch!
\param rxEn RX enable pin.
\param txEn TX enable pin.
*/
void setRfSwitchPins(RADIOLIB_PIN_TYPE rxEn, RADIOLIB_PIN_TYPE txEn);
#ifdef RADIOLIB_DEBUG
void regDump();
#endif