wayne roberts / sx12xx_hal

Hardware Abstraction Layer, permitting any LoRa application to use any LoRa radio chip

Dependents:   alarm_slave alarm_master lora_p2p lorawan1v1 ... more

radio chip selection

Radio chip driver is not included, allowing choice of radio device.
If you're using SX1272 or SX1276, then import sx127x driver into your program.
if you're using SX1261 or SX1262, then import sx126x driver into your program.
if you're using SX1280, then import sx1280 driver into your program.
if you're using LR1110, then import LR1110 driver into your program.
If you're using NAmote72 or Murata discovery, then you must import only sx127x driver.
If you're using Type1SJ select target DISCO_L072CZ_LRWAN1 and import sx126x driver into your program.

Pin assigned to arduino LoRa radio shield form-factor

TARGET_DISCO_L072CZ_LRWAN1/radio_typeABZ.cpp@5:ab124d3842a8, 2018-11-25 (annotated)

Committer:
Wayne Roberts
Date:
Sun Nov 25 17:12:03 2018 -0800
Revision:
5:ab124d3842a8
Parent:
0:9c052ff8dd6a
Child:
18:78c5e644d37a
add PA disable option

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Wayne Roberts 0:9c052ff8dd6a 1 #include "radio.h"
Wayne Roberts 0:9c052ff8dd6a 2
Wayne Roberts 0:9c052ff8dd6a 3 #define SSA_BOARD 1
Wayne Roberts 0:9c052ff8dd6a 4
Wayne Roberts 5:ab124d3842a8 5 #include "SPIu.h"
Wayne Roberts 5:ab124d3842a8 6 SPIu spi(PA_7, PA_6, PB_3); // mosi, miso, sclk
Wayne Roberts 0:9c052ff8dd6a 7 // dio0, dio1, nss, spi, rst
Wayne Roberts 0:9c052ff8dd6a 8 SX127x Radio::radio(PB_4, PB_1, PA_15, spi, PC_0); // sx1276 arduino shield
Wayne Roberts 0:9c052ff8dd6a 9 SX127x_lora Radio::lora(radio);
Wayne Roberts 0:9c052ff8dd6a 10 SX127x_fsk Radio::fsk(radio);
Wayne Roberts 0:9c052ff8dd6a 11
Wayne Roberts 0:9c052ff8dd6a 12 InterruptIn Radio::dio0(PB_4);
Wayne Roberts 0:9c052ff8dd6a 13 InterruptIn Radio::dio1(PB_1);
Wayne Roberts 0:9c052ff8dd6a 14
Wayne Roberts 0:9c052ff8dd6a 15 #define CRF1 PA_1
Wayne Roberts 0:9c052ff8dd6a 16 #define CRF2 PC_2
Wayne Roberts 0:9c052ff8dd6a 17 #define CRF3 PC_1
Wayne Roberts 0:9c052ff8dd6a 18 DigitalOut Vctl1(CRF1);
Wayne Roberts 0:9c052ff8dd6a 19 DigitalOut Vctl2(CRF2);
Wayne Roberts 0:9c052ff8dd6a 20 DigitalOut Vctl3(CRF3);
Wayne Roberts 0:9c052ff8dd6a 21
Wayne Roberts 0:9c052ff8dd6a 22 void Radio::rfsw_callback()
Wayne Roberts 0:9c052ff8dd6a 23 {
Wayne Roberts 0:9c052ff8dd6a 24 if (radio.RegOpMode.bits.Mode == RF_OPMODE_TRANSMITTER) {
Wayne Roberts 0:9c052ff8dd6a 25 Vctl1 = 0;
Wayne Roberts 0:9c052ff8dd6a 26 if (radio.RegPaConfig.bits.PaSelect) {
Wayne Roberts 0:9c052ff8dd6a 27 Vctl2 = 0;
Wayne Roberts 0:9c052ff8dd6a 28 Vctl3 = 1;
Wayne Roberts 0:9c052ff8dd6a 29 } else {
Wayne Roberts 0:9c052ff8dd6a 30 Vctl2 = 1;
Wayne Roberts 0:9c052ff8dd6a 31 Vctl3 = 0;
Wayne Roberts 0:9c052ff8dd6a 32 }
Wayne Roberts 0:9c052ff8dd6a 33 } else {
Wayne Roberts 0:9c052ff8dd6a 34 if (radio.RegOpMode.bits.Mode == RF_OPMODE_RECEIVER || radio.RegOpMode.bits.Mode == RF_OPMODE_RECEIVER_SINGLE)
Wayne Roberts 0:9c052ff8dd6a 35 Vctl1 = 1;
Wayne Roberts 0:9c052ff8dd6a 36 else
Wayne Roberts 0:9c052ff8dd6a 37 Vctl1 = 0;
Wayne Roberts 0:9c052ff8dd6a 38
Wayne Roberts 0:9c052ff8dd6a 39 Vctl2 = 0;
Wayne Roberts 0:9c052ff8dd6a 40 Vctl3 = 0;
Wayne Roberts 0:9c052ff8dd6a 41 }
Wayne Roberts 0:9c052ff8dd6a 42 }
Wayne Roberts 0:9c052ff8dd6a 43
Wayne Roberts 0:9c052ff8dd6a 44 void
Wayne Roberts 0:9c052ff8dd6a 45 Radio::set_tx_dbm(int8_t dbm)
Wayne Roberts 0:9c052ff8dd6a 46 {
Wayne Roberts 0:9c052ff8dd6a 47 RegPdsTrim1_t pds_trim;
Wayne Roberts 5:ab124d3842a8 48 unsigned v = radio.read_reg(REG_PATEST_SX1276);
Wayne Roberts 5:ab124d3842a8 49
Wayne Roberts 5:ab124d3842a8 50 if (dbm == PA_OFF_DBM) {
Wayne Roberts 5:ab124d3842a8 51 /* for bench testing: prevent overloading receiving station (very low TX power) */
Wayne Roberts 5:ab124d3842a8 52 v &= ~0x20; // turn off pu_regpa_n: disable PA
Wayne Roberts 5:ab124d3842a8 53 radio.write_reg(REG_PATEST_SX1276, v);
Wayne Roberts 5:ab124d3842a8 54 return;
Wayne Roberts 5:ab124d3842a8 55 } else if ((v & 0x20) == 0) {
Wayne Roberts 5:ab124d3842a8 56 v |= 0x20; // turn on pu_regpa_n: enable PA
Wayne Roberts 5:ab124d3842a8 57 radio.write_reg(REG_PATEST_SX1276, v);
Wayne Roberts 5:ab124d3842a8 58 }
Wayne Roberts 5:ab124d3842a8 59
Wayne Roberts 0:9c052ff8dd6a 60 pds_trim.octet = radio.read_reg(REG_PDSTRIM1_SX1276);
Wayne Roberts 0:9c052ff8dd6a 61
Wayne Roberts 0:9c052ff8dd6a 62 if (dbm > 13) {
Wayne Roberts 0:9c052ff8dd6a 63 radio.RegPaConfig.bits.PaSelect = 1;
Wayne Roberts 0:9c052ff8dd6a 64 if (dbm > 17) {
Wayne Roberts 0:9c052ff8dd6a 65 pds_trim.bits.prog_txdac = 7;
Wayne Roberts 0:9c052ff8dd6a 66 dbm -= 3;
Wayne Roberts 0:9c052ff8dd6a 67 ocp(150);
Wayne Roberts 0:9c052ff8dd6a 68 } else {
Wayne Roberts 0:9c052ff8dd6a 69 pds_trim.bits.prog_txdac = 4;
Wayne Roberts 0:9c052ff8dd6a 70 ocp(120);
Wayne Roberts 0:9c052ff8dd6a 71 }
Wayne Roberts 0:9c052ff8dd6a 72
Wayne Roberts 0:9c052ff8dd6a 73 radio.RegPaConfig.bits.OutputPower = dbm - 2;
Wayne Roberts 0:9c052ff8dd6a 74 } else {
Wayne Roberts 0:9c052ff8dd6a 75 pds_trim.bits.prog_txdac = 4;
Wayne Roberts 0:9c052ff8dd6a 76 radio.RegPaConfig.bits.PaSelect = 0;
Wayne Roberts 0:9c052ff8dd6a 77 radio.RegPaConfig.bits.OutputPower = dbm + 1;
Wayne Roberts 0:9c052ff8dd6a 78 ocp(80);
Wayne Roberts 0:9c052ff8dd6a 79 }
Wayne Roberts 0:9c052ff8dd6a 80
Wayne Roberts 0:9c052ff8dd6a 81 radio.write_reg(REG_PACONFIG, radio.RegPaConfig.octet);
Wayne Roberts 0:9c052ff8dd6a 82 radio.write_reg(REG_PDSTRIM1_SX1276, pds_trim.octet);
Wayne Roberts 0:9c052ff8dd6a 83 }
Wayne Roberts 0:9c052ff8dd6a 84
Wayne Roberts 0:9c052ff8dd6a 85 #ifdef SSA_BOARD
Wayne Roberts 0:9c052ff8dd6a 86 DigitalOut pa12(PA_12); // tcxo enable
Wayne Roberts 0:9c052ff8dd6a 87 DigitalOut pa11(PA_11); // sw9v enable -> sw3v3
Wayne Roberts 0:9c052ff8dd6a 88 #endif
Wayne Roberts 0:9c052ff8dd6a 89 void Radio::boardInit()
Wayne Roberts 0:9c052ff8dd6a 90 {
Wayne Roberts 0:9c052ff8dd6a 91 #ifdef SSA_BOARD
Wayne Roberts 0:9c052ff8dd6a 92 pa12 = 1; // tcxo
Wayne Roberts 0:9c052ff8dd6a 93 pa11 = 1; // sw9v -> sw3v3
Wayne Roberts 0:9c052ff8dd6a 94 #endif
Wayne Roberts 0:9c052ff8dd6a 95 }
Wayne Roberts 0:9c052ff8dd6a 96