kopia lustrzana https://github.com/jgromes/RadioLib
79 wiersze
2.2 KiB
C++
79 wiersze
2.2 KiB
C++
/*
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RadioLib STM32WLx Channel Activity Detection Example
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This example uses STM32WLx to scan the current LoRa
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channel and detect ongoing LoRa transmissions.
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Unlike SX127x CAD, SX126x/STM32WLx can detect any part
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of LoRa transmission, not just the preamble.
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For default module settings, see the wiki page
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https://github.com/jgromes/RadioLib/wiki/Default-configuration#sx126x---lora-modem
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For full API reference, see the GitHub Pages
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https://jgromes.github.io/RadioLib/
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*/
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// include the library
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#include <RadioLib.h>
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// no need to configure pins, signals are routed to the radio internally
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STM32WLx radio = new STM32WLx_Module();
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// set RF switch configuration for Nucleo WL55JC1
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// NOTE: other boards may be different!
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// Some boards may not have either LP or HP.
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// For those, do not set the LP/HP entry in the table.
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static const uint32_t rfswitch_pins[] =
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{PC3, PC4, PC5};
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static const Module::RfSwitchMode_t rfswitch_table[] = {
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{STM32WLx::MODE_IDLE, {LOW, LOW, LOW}},
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{STM32WLx::MODE_RX, {HIGH, HIGH, LOW}},
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{STM32WLx::MODE_TX_LP, {HIGH, HIGH, HIGH}},
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{STM32WLx::MODE_TX_HP, {HIGH, LOW, HIGH}},
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END_OF_MODE_TABLE,
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};
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void setup() {
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Serial.begin(9600);
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// set RF switch control configuration
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// this has to be done prior to calling begin()
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radio.setRfSwitchTable(rfswitch_pins, rfswitch_table);
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// initialize STM32WLx with default settings, except frequency
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Serial.print(F("[STM32WLx] Initializing ... "));
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int state = radio.begin(868.0);
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if (state == RADIOLIB_ERR_NONE) {
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Serial.println(F("success!"));
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} else {
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Serial.print(F("failed, code "));
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Serial.println(state);
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while (true);
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}
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}
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void loop() {
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Serial.print(F("[STM32WLx] Scanning channel for LoRa transmission ... "));
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// start scanning current channel
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int state = radio.scanChannel();
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if (state == RADIOLIB_LORA_DETECTED) {
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// LoRa preamble was detected
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Serial.println(F("detected!"));
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} else if (state == RADIOLIB_CHANNEL_FREE) {
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// no preamble was detected, channel is free
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Serial.println(F("channel is free!"));
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} else {
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// some other error occurred
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Serial.print(F("failed, code "));
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Serial.println(state);
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}
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// wait 100 ms before new scan
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delay(100);
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}
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