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[SX126x] Added automatic block calibration

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This commit is contained in:
jgromes 2019-05-21 13:41:13 +02:00
parent 943f591e92
commit 6a4634fbb2
2 changed files with 23 additions and 52 deletions
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71
src/modules/SX126x.cpp
View file

@ -27,7 +27,7 @@ int16_t SX126x::begin(float bw, uint8_t sf, uint8_t cr, uint16_t syncWord, uint1
}
// configure settings not accessible by API
state = config();
state = config(SX126X_PACKET_TYPE_LORA);
if(state != ERR_NONE) {
return(state);
}
@ -80,7 +80,7 @@ int16_t SX126x::beginFSK(float br, float freqDev, float rxBw, uint16_t preambleL
}
// configure settings not accessible by API
state = configFSK();
state = config(SX126X_PACKET_TYPE_GFSK);
if(state != ERR_NONE) {
return(state);
}
@ -1069,7 +1069,7 @@ int16_t SX126x::setFrequencyRaw(float freq, bool calibrate) {
return(ERR_NONE);
}
int16_t SX126x::config() {
int16_t SX126x::config(uint8_t modem) {
// set DIO2 as IRQ
uint8_t* data = new uint8_t[1];
data[0] = SX126X_DIO2_AS_IRQ;
@ -1091,8 +1091,8 @@ int16_t SX126x::config() {
return(state);
}
// set LoRa mode
data[0] = SX126X_PACKET_TYPE_LORA;
// set modem
data[0] = modem;
state = SPIwriteCommand(SX126X_CMD_SET_PACKET_TYPE, data, 1);
if(state != ERR_NONE) {
return(state);
@ -1123,57 +1123,28 @@ int16_t SX126x::config() {
// clear IRQ
state = clearIrqStatus();
state |= setDioIrqParams(SX126X_IRQ_NONE, SX126X_IRQ_NONE);
if(state != ERR_NONE) {
return(state);
}
// calibrate all blocks
delete[] data;
data = new uint8_t[1];
data[0] = SX126X_CALIBRATE_ALL;
state = SPIwriteCommand(SX126X_CMD_CALIBRATE, data, 1);
if(state != ERR_NONE) {
return(state);
}
// wait for calibration completion
delayMicroseconds(1);
while(digitalRead(_mod->getRx()));
delete[] data;
return(ERR_NONE);
}
int16_t SX126x::configFSK() {
// set DIO2 as IRQ
uint8_t* data = new uint8_t[1];
data[0] = SX126X_DIO2_AS_IRQ;
int16_t state = SPIwriteCommand(SX126X_CMD_SET_DIO2_AS_RF_SWITCH_CTRL, data, 1);
if(state != ERR_NONE) {
return(state);
}
// set regulator mode
data[0] = SX126X_REGULATOR_DC_DC;
state = SPIwriteCommand(SX126X_CMD_SET_REGULATOR_MODE, data, 1);
if(state != ERR_NONE) {
return(state);
}
// reset buffer base address
state = setBufferBaseAddress();
if(state != ERR_NONE) {
return(state);
}
// set FSK mode
data[0] = SX126X_PACKET_TYPE_GFSK;
state = SPIwriteCommand(SX126X_CMD_SET_PACKET_TYPE, data, 1);
if(state != ERR_NONE) {
return(state);
}
// set Rx/Tx fallback mode to STDBY_RC
data[0] = SX126X_RX_TX_FALLBACK_MODE_STDBY_RC;
state = SPIwriteCommand(SX126X_CMD_SET_RX_TX_FALLBACK_MODE, data, 1);
if(state != ERR_NONE) {
return(state);
}
// clear IRQ
state = clearIrqStatus();
state |= setDioIrqParams(SX126X_IRQ_NONE, SX126X_IRQ_NONE);
delete[] data;
return(state);
}
int16_t SX126x::SPIwriteCommand(uint8_t cmd, uint8_t* data, uint8_t numBytes, bool waitForBusy) {
return(SX126x::SPItransfer(cmd, true, data, NULL, numBytes, waitForBusy));
}

4
src/modules/SX126x.h
View file

@ -134,6 +134,7 @@
#define SX126X_CALIBRATE_RC13M_ON 0b00000010 // 1 1 enabled
#define SX126X_CALIBRATE_RC64K_OFF 0b00000000 // 0 0 64 kHz RC osc. calibration: disabled
#define SX126X_CALIBRATE_RC64K_ON 0b00000001 // 0 0 enabled
#define SX126X_CALIBRATE_ALL 0b01111111 // 6 0 calibrate all blocks
//SX126X_CMD_CALIBRATE_IMAGE
#define SX126X_CAL_IMG_430_MHZ_1 0x6B
@ -408,8 +409,7 @@ class SX126x: public PhysicalLayer {
float _dataRate;
int16_t config();
int16_t configFSK();
int16_t config(uint8_t modem);
// common low-level SPI interface
int16_t SPIwriteCommand(uint8_t cmd, uint8_t* data, uint8_t numBytes, bool waitForBusy = true);