Several parameters can be updated in ./apps_configuration.h header file:
| Constant | Comments | Possible Values | Default values |
|---|---|---|---|
PACKET_TYPE |
Packet type, will be LoRa or GFSK | Any value from the enum sx126x_pkt_type_t |
SX126X_PKT_TYPE_LORA |
RF_FREQ_IN_HZ |
Frequency on which packets will be sent or received | Depends on shield capabilities | 490000000 |
TX_OUTPUT_POWER_DBM |
Power level of packets sent | [-17,22] | 14 |
FALLBACK_MODE |
Fallback mode setting | Any value from the enum sx126x_fallback_modes_t |
SX126X_FALLBACK_STDBY_RC |
ENABLE_RX_BOOST_MODE |
RX boost mode setting | true/false | false |
PAYLOAD_LENGTH |
Packet payload length of both LoRa and GFSK modem | [0-255] | 7 |
LORA_BANDWIDTH |
Bandwidth of LoRa packets | Any value from the enum sx126x_lora_bw_t |
SX126X_LORA_BW_125 |
LORA_SPREADING_FACTOR |
Spreading factor of LoRa packets | Any value from the enum sx126x_lora_sf_t |
SX126X_LORA_SF7 |
LORA_CODING_RATE |
Code rate of LoRa packets | Any value from the enum sx126x_lora_cr_t |
SX126X_LORA_CR_4_5 |
LORA_PREAMBLE_LENGTH |
Preamble length in LoRa packets | [10-65535] | 8 |
LORA_PKT_LEN_MODE |
Header type, explicit (default) or implict header | Any value from the enum sx126x_lora_pkt_len_modes_t |
SX126X_LORA_PKT_EXPLICIT |
LORA_IQ |
I and Q inverted or not | true/false | false |
LORA_CRC |
CRC on or off | true/false | false |
LORA_SYNCWORD |
Syncword used of LoRa packets in Hz | LORA_SYNCWORD_PRIVATE_NTW or LORA_SYNCWORD_PUBLIC_NTW |
LORA_SYNCWORD_PRIVATE_NTW |
FSK_FDEV |
Frequency deviation for GFSK modulation in bps | 25e3 | |
FSK_BITRATE |
BitRate for GFSK packets | 50e3 | |
FSK_BANDWIDTH |
Bandwidth for GFSK packets | Any value from the enum sx126x_gfsk_bw_t |
SX126X_GFSK_BW_117300 |
FSK_PULSE_SHAPE |
Defines the filtering applied to GFSK packets | Any value from the enum sx126x_gfsk_pulse_shape_t |
SX126X_GFSK_PULSE_SHAPE_OFF |
FSK_PREAMBLE_LENGTH |
Length of preamble in GFSK packets in bits | [0x0001-0xFFFF] | 32 |
FSK_PREAMBLE_DETECTOR |
Length of preamble detector of GFSK packets | Any value from the enum sx126x_gfsk_preamble_detector_t |
SX126X_GFSK_PREAMBLE_DETECTOR_MIN_16BITS |
FSK_SYNCWORD_LENGTH |
Syncword length for GFSK packets in bits | [0-64] | 40 |
FSK_ADDRESS_FILTERING |
Option for address filtering | Any value from the enum sx126x_gfsk_address_filtering_t |
SX126X_GFSK_ADDRESS_FILTERING_DISABLE |
FSK_HEADER_TYPE |
GFSK packet type, fixed payload length or variable | Any value from the enum sx126x_gfsk_pkt_len_modes_t |
SX126X_GFSK_PKT_VAR_LEN |
FSK_CRC_TYPE |
Option for GFSK packet CRC | Any value from the enum sx126x_gfsk_crc_types_t |
SX126X_GFSK_CRC_1_BYTE_INV |
FSK_DC_FREE |
Option to enable whitening on GFSK packets | Any value from the enum sx126x_gfsk_dc_free_t |
SX126X_GFSK_DC_FREE_OFF |
gfsk_sync_word |
Syncword for GFSK packets | Any 8 bytes table | {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF} |
FSK_WHITENING_SEED |
Whitening seed for GFSK packets, needs FSK_DC_FREE enabled to be effective |
Any uint16_t |
0x0123 |
FSK_CRC_SEED |
CRC seed for GFSK packets, needs FSK_CRC_TYPE to be different from SX126X_GFSK_CRC_OFF |
Any uint32_t |
0x01234567 |
FSK_CRC_POLYNOMIAL |
CRC polynomial for GFSK packets, needs FSK_CRC_TYPE to be different from SX126X_GFSK_CRC_OFF |
Any uint32_t |
0x01234567 |
FSK_NODE_ADDRESS |
Node address for GFSK packets filtering, needs FSK_ADDRESS_FILTERING to set to corresponding mode |
Any uint8_t |
0x05 |
FSK_BROADCAST_ADDRESS |
Broadcast address for GFSK packets filtering, , needs FSK_ADDRESS_FILTERING to set to corresponding mode |
Any uint8_t |
0xAB |
When compiling with arm-none-eabi-gcc toolchain, all these constant are configurable through command line with the EXTRAFLAGS. See main README.
| Constant | Comments | Possible Values | Default |
|---|---|---|---|
CUSTOM_XTAL_TRIM |
Enable the custom crystal foot trimming capacitor value | (yes / no) | no |