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

Committer:
Wayne Roberts
Date:
2021-02-05
Revision:
21:96db08266089
Parent:
18:78c5e644d37a

File content as of revision 21:96db08266089:

#include "radio.h"
#ifdef SX127x_H

#define SSA_BOARD   1

#include "SPIu.h"
SPIu spi(PA_7, PA_6, PB_3); // mosi, miso, sclk
//                  dio0, dio1,  nss,  spi,  rst
SX127x Radio::radio(PB_4, PB_1, PA_15, spi, PC_0); // sx1276 arduino shield
SX127x_lora Radio::lora(radio);
SX127x_fsk Radio::fsk(radio);

InterruptIn Radio::dio0(PB_4);
InterruptIn Radio::dio1(PB_1);

#define CRF1    PA_1
#define CRF2    PC_2
#define CRF3    PC_1
DigitalOut Vctl1(CRF1);
DigitalOut Vctl2(CRF2);
DigitalOut Vctl3(CRF3);

void Radio::rfsw_callback()
{
    if (radio.RegOpMode.bits.Mode == RF_OPMODE_TRANSMITTER) {
        Vctl1 = 0;        
        if (radio.RegPaConfig.bits.PaSelect) {
            Vctl2 = 0;
            Vctl3 = 1;                        
        } else {
            Vctl2 = 1;
            Vctl3 = 0;            
        }
    } else {
        if (radio.RegOpMode.bits.Mode == RF_OPMODE_RECEIVER || radio.RegOpMode.bits.Mode == RF_OPMODE_RECEIVER_SINGLE)
            Vctl1 = 1;
        else
            Vctl1 = 0;
        
        Vctl2 = 0;
        Vctl3 = 0;        
    }
}

void
Radio::set_tx_dbm(int8_t dbm)
{
    RegPdsTrim1_t pds_trim;
    unsigned v = radio.read_reg(REG_PATEST_SX1276);

    if (dbm == PA_OFF_DBM) {
        /* for bench testing: prevent overloading receiving station (very low TX power) */
        v &= ~0x20; // turn off pu_regpa_n: disable PA
        radio.write_reg(REG_PATEST_SX1276, v);
        return;
    } else if ((v & 0x20) == 0) {
        v |= 0x20; // turn on pu_regpa_n: enable PA
        radio.write_reg(REG_PATEST_SX1276, v);
    }

    pds_trim.octet = radio.read_reg(REG_PDSTRIM1_SX1276);

    if (dbm > 13) {
        radio.RegPaConfig.bits.PaSelect = 1;
        if (dbm > 17) {
            pds_trim.bits.prog_txdac = 7;
            dbm -= 3;
            ocp(150);
        } else {
            pds_trim.bits.prog_txdac = 4;
            ocp(120);
        }

        radio.RegPaConfig.bits.OutputPower = dbm - 2;
    } else {
        pds_trim.bits.prog_txdac = 4;
        radio.RegPaConfig.bits.PaSelect = 0;
        radio.RegPaConfig.bits.OutputPower = dbm + 1;
        ocp(80);
    }

    radio.write_reg(REG_PACONFIG, radio.RegPaConfig.octet);
    radio.write_reg(REG_PDSTRIM1_SX1276, pds_trim.octet);
}

#ifdef SSA_BOARD
DigitalOut pa12(PA_12); // tcxo enable
DigitalOut pa11(PA_11); // sw9v enable -> sw3v3
#endif
void Radio::boardInit()
{
#ifdef SSA_BOARD
    pa12 = 1; // tcxo
    pa11 = 1; // sw9v -> sw3v3
#endif    
}

#endif /* ..SX127x_H */