ping.c - master - rgd045/sx1278-LoRa-RaspberryPi

ping.c
72 строки2 KB
Folkert van Heusden
memleak fix
23 авг 2022, 19:46
23 авг 2022, 19:46a2e94fe
#include "LoRa.h"

void tx_f(txData *tx){
    LoRa_ctl *modem = (LoRa_ctl *)(tx->userPtr);
    printf("tx done;\t");
    printf("sent string: \"%s\"\n\n", tx->buf);//Data we've sent
    
    LoRa_receive(modem);
}

void * rx_f(void *p){
    rxData *rx = (rxData *)p;
    LoRa_ctl *modem = (LoRa_ctl *)(rx->userPtr);
    LoRa_stop_receive(modem);//manually stoping RxCont mode
    printf("rx done;\t");
    printf("CRC error: %d;\t", rx->CRC);
    printf("Data size: %d;\t", rx->size);
    printf("received string: \"%s\";\t", rx->buf);//Data we've received
    printf("RSSI: %d;\t", rx->RSSI);
    printf("SNR: %f\n", rx->SNR);
    
    LoRa_sleep(modem);
    free(p);

    return NULL;
}

int main(){

    char txbuf[255];
    LoRa_ctl modem;

    //See for typedefs, enumerations and there values in LoRa.h header file
    modem.spiCS = 0;//Raspberry SPI CE pin number
    modem.tx.callback = tx_f;
    modem.tx.data.buf = txbuf;
    modem.rx.callback = rx_f;
    modem.rx.data.userPtr = (void *)(&modem);//To handle with chip from rx callback
    modem.tx.data.userPtr = (void *)(&modem);//To handle with chip from tx callback
    memcpy(modem.tx.data.buf, "Ping", 5);//copy data we'll sent to buffer
    modem.tx.data.size = 5;//Payload len
    modem.eth.preambleLen=6;
    modem.eth.bw = BW62_5;//Bandwidth 62.5KHz
    modem.eth.sf = SF12;//Spreading Factor 12
    modem.eth.ecr = CR8;//Error coding rate CR4/8
    modem.eth.CRC = 1;//Turn on CRC checking
    modem.eth.freq = 434800000;// 434.8MHz
    modem.eth.resetGpioN = 4;//GPIO4 on lora RESET pin
    modem.eth.dio0GpioN = 17;//GPIO17 on lora DIO0 pin to control Rxdone and Txdone interrupts
    modem.eth.outPower = OP20;//Output power
    modem.eth.powerOutPin = PA_BOOST;//Power Amplifire pin
    modem.eth.AGC = 1;//Auto Gain Control
    modem.eth.OCP = 240;// 45 to 240 mA. 0 to turn off protection
    modem.eth.implicitHeader = 0;//Explicit header mode
    modem.eth.syncWord = 0x12;
    //For detail information about SF, Error Coding Rate, Explicit header, Bandwidth, AGC, Over current protection and other features refer to sx127x datasheet https://www.semtech.com/uploads/documents/DS_SX1276-7-8-9_W_APP_V5.pdf

    LoRa_begin(&modem);
    LoRa_send(&modem);
    
    printf("Time on air data - Tsym: %f;\t", modem.tx.data.Tsym);
    printf("Tpkt: %f;\t", modem.tx.data.Tpkt);
    printf("payloadSymbNb: %u\n", modem.tx.data.payloadSymbNb);
    
    while(LoRa_get_op_mode(&modem) != SLEEP_MODE){
        sleep(1);
    }

    printf("end\n");

    LoRa_end(&modem);
}