74 lines
3.3 KiB
C++
74 lines
3.3 KiB
C++
// lora_tx.cpp — LR1121 transmit test
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// Usage: sudo ./lora_tx [-v] [--433|--868|--24|freq_hz] [--lp|--hp] [--dbm=N]
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// [--busy-gpio=N] [--reset-gpio=N] [--dio9-gpio=N]
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// -v verbose step labels (shows exactly where init hangs)
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// --433 433.05 MHz (default)
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// --868 868 MHz
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// --24 2403 MHz
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// freq_hz any raw frequency in Hz
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//
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// Requires SPI: sudo raspi-config → Interfaces → SPI → Yes → reboot
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <thread>
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#include <chrono>
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#include "lr1121_malnus.hpp"
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int main(int argc, char **argv)
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{
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lr1121::Config cfg;
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cfg.verbose = false;
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cfg.pa_sel = 0x00; // LP default: avoids LBD on weak VBAT rails
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cfg.tx_dbm = 10;
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cfg.sf = 0x07; // SF7
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cfg.bw = 0x04; // 125 kHz
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cfg.cr = 0x01; // CR 4/5
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for (int i = 1; i < argc; ++i) {
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if (std::strcmp(argv[i], "-v") == 0) cfg.verbose = true;
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else if (std::strcmp(argv[i], "--433") == 0) cfg.freq_hz = lr1121::FREQ_433;
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else if (std::strcmp(argv[i], "--868") == 0) cfg.freq_hz = lr1121::FREQ_868;
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else if (std::strcmp(argv[i], "--24") == 0 ||
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std::strcmp(argv[i], "--2g4") == 0) cfg.freq_hz = lr1121::FREQ_2400;
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else if (std::strcmp(argv[i], "--hp") == 0) cfg.pa_sel = 0x01;
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else if (std::strcmp(argv[i], "--lp") == 0) cfg.pa_sel = 0x00;
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else if (std::strncmp(argv[i], "--dbm=", 6) == 0) cfg.tx_dbm = (int8_t)std::atoi(argv[i] + 6);
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else if (std::strncmp(argv[i], "--busy-gpio=", 12) == 0) cfg.busy_gpio = (unsigned)std::strtoul(argv[i] + 12, nullptr, 10);
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else if (std::strncmp(argv[i], "--reset-gpio=", 13) == 0) cfg.reset_gpio = (unsigned)std::strtoul(argv[i] + 13, nullptr, 10);
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else if (std::strncmp(argv[i], "--dio9-gpio=", 12) == 0) cfg.dio9_gpio = (unsigned)std::strtoul(argv[i] + 12, nullptr, 10);
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else cfg.freq_hz = (uint32_t)std::strtoul(argv[i], nullptr, 10);
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}
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std::printf("lora_tx: %u Hz SF%u BW=0x%02X PA=%s PWR=%d dBm gpio(busy=%u reset=%u dio9=%u)%s\n",
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cfg.freq_hz, cfg.sf, cfg.bw,
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cfg.pa_sel ? "HP" : "LP", (int)cfg.tx_dbm,
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cfg.busy_gpio, cfg.reset_gpio, cfg.dio9_gpio,
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cfg.verbose ? " [verbose]" : "");
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lr1121::Radio radio;
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if (!radio.begin(cfg)) {
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std::fprintf(stderr, "ERROR: radio init failed\n"
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" Check: SPI enabled? wiring? DIO5/DIO6 connected?\n"
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" If fw looks like bootloader: sudo ./lora_rx --reset\n"
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" Run with -v for step-by-step output\n");
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return 1;
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}
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auto ver = radio.getVersion();
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if (ver.fw_hi < 0x02)
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std::fprintf(stderr, "hint: fw=0x%02X%02X — try: sudo ./lora_rx --reset\n",
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ver.fw_hi, ver.fw_lo);
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std::printf("Radio OK — sending every second\n");
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for (int n = 0; ; ++n) {
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char msg[32];
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int len = std::snprintf(msg, sizeof(msg), "hello %d", n);
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bool ok = radio.send((const uint8_t *)msg, (uint8_t)len);
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std::printf("[%4d] tx '%s' → %s\n", n, msg, ok ? "OK" : "TIMEOUT");
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std::this_thread::sleep_for(std::chrono::seconds(1));
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}
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radio.end();
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return 0;
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}
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