112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
/*
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RadioLib STM32WLx Transmit Example
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This example transmits packets using STM32WL MCU with integrated
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(SX126x) LoRa radio.
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Each packet contains up to 256 bytes of data, in the form of:
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- Arduino String
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- null-terminated char array (C-string)
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- arbitrary binary data (byte array)
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This example assumes Nucleo WL55JC1 is used. For other Nucleo boards
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or standalone STM32WL, some configuration such as TCXO voltage and
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RF switch control may have to be adjusted.
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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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static const uint8_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 STM32WL with default settings, except frequency
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Serial.print(F("[STM32WL] 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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// set appropriate TCXO voltage for Nucleo WL55JC1
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state = radio.setTCXO(1.7);
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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("[STM32WL] Transmitting packet ... "));
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// you can transmit C-string or Arduino string up to
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// 256 characters long
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// NOTE: transmit() is a blocking method!
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// See example STM32WLx_Transmit_Interrupt for details
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// on non-blocking transmission method.
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int state = radio.transmit("Hello World!");
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// you can also transmit byte array up to 256 bytes long
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/*
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byte byteArr[] = {0x01, 0x23, 0x45, 0x56, 0x78, 0xAB, 0xCD, 0xEF};
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int state = radio.transmit(byteArr, 8);
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*/
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if (state == RADIOLIB_ERR_NONE) {
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// the packet was successfully transmitted
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Serial.println(F("success!"));
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// print measured data rate
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Serial.print(F("[STM32WL] Datarate:\t"));
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Serial.print(radio.getDataRate());
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Serial.println(F(" bps"));
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} else if (state == RADIOLIB_ERR_PACKET_TOO_LONG) {
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// the supplied packet was longer than 256 bytes
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Serial.println(F("too long!"));
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} else if (state == RADIOLIB_ERR_TX_TIMEOUT) {
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// timeout occured while transmitting packet
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Serial.println(F("timeout!"));
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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 for a second before transmitting again
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delay(1000);
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}
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