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Test.cpp
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Test.cpp
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/*
This file is part of SX126x Linux driver.
Copyright (C) 2020, 2021 ReimuNotMoe
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "SX126x_Linux.hpp"
#include <ctime>
timespec timespec_sub(timespec bigger, timespec smaller) {
timespec ret;
ret.tv_sec = bigger.tv_sec - smaller.tv_sec;
ret.tv_nsec = bigger.tv_nsec - smaller.tv_nsec;
if (ret.tv_nsec < 0) {
ret.tv_sec--;
ret.tv_nsec += 1e9;
}
return ret;
}
int main(int argc, char **argv) {
if (argc < 8) {
printf("Usage: SX126x_Test <txpower> <freq in kHz> <bw 6..4> <cr 1..4> <sf 5..12> <lna_enable> <tx|rx>\n"
"e.g. SX126x_Test 22 433000 6 1 5 1 tx\n");
return 1;
}
int16_t rxen_pin = 20;
if (strtol(argv[6], nullptr, 10) == 0) {
rxen_pin = -1;
}
// Customize these pins by yourself
SX126x_Linux Radio("/dev/spidev0.0", 0,
{
19, 13, 23,
26, -1, -1,
21, rxen_pin
}
);
// Assume we're running on a high-end Raspberry Pi,
// so we set the SPI clock speed to the maximum value supported by the chip
Radio.SetSpiSpeed(8000000);
// WARNING: Change this to your chip type, or it will misconfigure RF PA
Radio.SetDeviceType(SX126x::SX1268);
Radio.Init();
puts("Init done");
// WARNING: Change this to reflect your configuration
// Or you may burn the chips
Radio.SetDio3AsTcxoCtrl(SX126x::TCXO_CTRL_1_8V, 32);
puts("SetDio3AsTcxoCtrl done");
SX126x::CalibrationParams_t calib_param;
calib_param.Value = 0x7f;
Radio.Calibrate(calib_param);
puts("Calibrate done");
Radio.SetStandby(SX126x::STDBY_XOSC);
puts("SetStandby done");
auto txpwr = strtol(argv[1], nullptr, 10);
Radio.SetTxParams(txpwr, SX126x::RADIO_RAMP_10_US);
puts("SetTxParams done");
Radio.SetBufferBaseAddresses(0x00, 0x00);
puts("SetBufferBaseAddresses done");
SX126x::ModulationParams_t ModulationParams2;
ModulationParams2.PacketType = SX126x::PACKET_TYPE_LORA;
ModulationParams2.Params.LoRa.CodingRate = static_cast<SX126x::RadioLoRaCodingRates_t>(strtol(argv[4], nullptr, 10));
ModulationParams2.Params.LoRa.Bandwidth = static_cast<SX126x::RadioLoRaBandwidths_t>(strtol(argv[3], nullptr, 10));
ModulationParams2.Params.LoRa.SpreadingFactor = static_cast<SX126x::RadioLoRaSpreadingFactors_t>(strtol(argv[5], nullptr, 10));
ModulationParams2.Params.LoRa.LowDatarateOptimize = 0;
SX126x::PacketParams_t PacketParams2;
PacketParams2.PacketType = SX126x::PACKET_TYPE_LORA;
auto &l = PacketParams2.Params.LoRa;
l.PayloadLength = 32;
l.HeaderType = SX126x::LORA_PACKET_VARIABLE_LENGTH;
l.PreambleLength = 24;
l.CrcMode = SX126x::LORA_CRC_ON;
l.InvertIQ = SX126x::LORA_IQ_NORMAL;
Radio.SetPacketType(SX126x::PACKET_TYPE_LORA);
puts("SetPacketType done");
Radio.SetModulationParams(ModulationParams2);
puts("SetModulationParams done");
Radio.SetPacketParams(PacketParams2);
puts("SetPacketParams done");
auto freq = strtol(argv[2], nullptr, 10);
Radio.SetRfFrequency(freq * 1000UL);
puts("SetRfFrequency done");
Radio.callbacks.txDone = []{
puts("Wow TX done");
};
size_t pkt_count = 0;
timespec tm_curpkt, tm_lastpkt;
clock_gettime(CLOCK_MONOTONIC, &tm_lastpkt);
Radio.callbacks.rxDone = [&] {
clock_gettime(CLOCK_MONOTONIC, &tm_curpkt);
timespec tm_diff = timespec_sub(tm_curpkt, tm_lastpkt);
tm_lastpkt = tm_curpkt;
puts("Wow RX done");
SX126x::PacketStatus_t ps;
Radio.GetPacketStatus(&ps);
uint8_t recv_buf[253];
uint8_t rsz;
Radio.GetPayload(recv_buf, &rsz, 253);
uint8_t err_count = 0;
for (size_t i=0; i<rsz; i++) {
uint8_t correct_value;
if (i % 2)
correct_value = 0x55;
else
correct_value = 0xaa;
if (recv_buf[i] != correct_value)
err_count++;
}
const char *color, *color2;
double timediff = (double)tm_diff.tv_sec + ((double)tm_diff.tv_nsec / 1e9);
double airtime = (double)Radio.GetTimeOnAir() / 1000 + 0.02;
double bounce_offset_ms = (timediff - airtime) * 1000;
if (timediff > (airtime + 0.008))
color = "\x1b[01;31m";
else
color = "\x1b[01;32m";
if (bounce_offset_ms > 3)
color2 = "\x1b[01;31m";
else
color2 = "\x1b[01;32m";
pkt_count++;
time_t tm = time(nullptr);
auto tmtm = localtime(&tm);
char timebuf[64];
strftime(timebuf, 63, "%Y-%m-%d %H:%M:%S", tmtm);
puts(timebuf);
printf("pkt count: %ld, %slast packet: %lfs/%lfs ago, %sbounce offset: %lfms\x1b[0m\n", pkt_count, color, timediff, airtime, color2, bounce_offset_ms);
double ber = (double)err_count/rsz*100;
if (ber == 0.0)
color = "\x1b[01;32m";
else if (ber <= 5.0)
color = "\x1b[01;33m";
else
color = "\x1b[01;31m";
printf("corrupted bytes: %u/%u, %sBER: %f%%\x1b[0m\n", err_count, rsz, color, ber);
auto snr = ps.Params.LoRa.SnrPkt;
if (snr >= 3)
color = "\x1b[01;32m";
else if (snr < 3 && snr >= -3)
color = "\x1b[01;33m";
else
color = "\x1b[01;31m";
printf("recvd %u bytes, RSCP: %d, RSSI: %d, %sSNR: %d\x1b[0m\n", rsz, ps.Params.LoRa.SignalRssiPkt, ps.Params.LoRa.RssiPkt, color, ps.Params.LoRa.SnrPkt);
};
auto IrqMask = SX126x::IRQ_RX_DONE | SX126x::IRQ_TX_DONE | SX126x::IRQ_RX_TX_TIMEOUT;
Radio.SetDioIrqParams(IrqMask, IrqMask, SX126x::IRQ_RADIO_NONE, SX126x::IRQ_RADIO_NONE);
puts("SetDioIrqParams done");
Radio.StartIrqHandler();
puts("StartIrqHandler done");
// Radio.SetTxInfinitePreamble();
//
// while (1) {
// sleep(1);
// }
auto pkt_ToA = Radio.GetTimeOnAir();
if (strcmp(argv[7], "tx") == 0) {
uint8_t buf[253];
for (size_t i=0; i<sizeof(buf); i++) {
if (i % 2)
buf[i] = 0x55;
else
buf[i] = 0xaa;
}
while (1) {
Radio.SendPayload((uint8_t *) buf, 32, 0);
puts("SendPayload done");
usleep((pkt_ToA + 20) * 1000);
}
} else {
Radio.SetRxBoosted(UINT32_MAX);
while (1) {
sleep(1);
}
}
}