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Add method to support SX128x Manual Gain Mode.

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This commit is contained in:
Robert 2022-02-23 23:58:56 -05:00
parent 89de031e18
commit da0cd455c9
2 changed files with 42 additions and 0 deletions
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33
src/modules/SX128x/SX128x.cpp
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@ -1035,6 +1035,39 @@ int16_t SX128x::setHighSensitivityMode(bool hsm) {
return(0); return(0);
} }
int16_t SX128x::setGainControl(uint8_t gain) {
// update registers
uint8_t ManualGainSetting = 0;
int16_t state = readRegister(RADIOLIB_SX128X_REG_MANUAL_GAIN_CONTROL_ENABLE_2, &ManualGainSetting, 1);
RADIOLIB_ASSERT(state);
uint8_t LNAGainValue = 0;
state = readRegister(RADIOLIB_SX128X_REG_MANUAL_GAIN_SETTING, &LNAGainValue, 1);
RADIOLIB_ASSERT(state);
uint8_t LNAGainControl = 0;
state = readRegister(RADIOLIB_SX128X_REG_MANUAL_GAIN_CONTROL_ENABLE_1, &LNAGainControl, 1);
RADIOLIB_ASSERT(state);
if (gain > 0 && gain < 14) {
// Set manual gain
ManualGainSetting &= ~0x01; // Set bit 0 to 0 (Enable Manual Gain Control)
LNAGainValue &= 0xF0; // Bits 0, 1, 2 and 3 to 0
LNAGainValue |= gain; // Set bits 0, 1, 2 and 3 to Manual Gain Setting (1-13)
LNAGainControl |= 0x80; // Set bit 7 to 1 (Enable Manual Gain Control)
} else {
// Set automatic gain if 0 or out of range
ManualGainSetting |= 0x01; // Set bit 0 to 1 (Enable Automatic Gain Control)
LNAGainValue &= 0xF0; // Bits 0, 1, 2 and 3 to 0
LNAGainValue |= 0x0A; // Set bits 0, 1, 2 and 3 to Manual Gain Setting (1-13)
LNAGainControl = 0x4D; // Set bit 7 to 0 (Enable Automatic Gain Control)
}
state = writeRegister(RADIOLIB_SX128X_REG_MANUAL_GAIN_CONTROL_ENABLE_2, &ManualGainSetting, 1);
RADIOLIB_ASSERT(state);
state = writeRegister(RADIOLIB_SX128X_REG_MANUAL_GAIN_SETTING, &LNAGainValue, 1);
RADIOLIB_ASSERT(state);
state = writeRegister(RADIOLIB_SX128X_REG_MANUAL_GAIN_CONTROL_ENABLE_1, &LNAGainControl, 1);
RADIOLIB_ASSERT(state);
return(0);
}
float SX128x::getRSSI() { float SX128x::getRSSI() {
// get packet status // get packet status
uint8_t packetStatus[5]; uint8_t packetStatus[5];

9
src/modules/SX128x/SX128x.h
View file

@ -722,6 +722,15 @@ class SX128x: public PhysicalLayer {
*/ */
int16_t setHighSensitivityMode(bool hsm = false); int16_t setHighSensitivityMode(bool hsm = false);
/*!
\brief Enables or disables receiver manual gain control.
\param Gain 0 automatic gain; 1 minimum gain to 13 maximum gain.
\returns \ref status_codes
*/
int16_t setGainControl(uint8_t gain = 0);
/*! /*!
\brief Gets RSSI (Recorded Signal Strength Indicator) of the last received packet. \brief Gets RSSI (Recorded Signal Strength Indicator) of the last received packet.