Kongduino
commented
2 years ago Hi,
First I took the liberty to clean up your code to make it more legible. Note that it's better to read the full packet first, and then deal with its contents. You want to flush the buffer anyway.
#include <SPI.h>
#include <LoRa.h>
//====== Defining Pins =============
#define RF_RST 22
#define RF_CS 15
#define RF_SCK 18
#define RF_MOSI 23
#define RF_MISO 19
#define RF_IRQ 11
//==================================
SPIClass hspi = NULL;
byte localAddress = 0x00;
void setup() {
Serial.begin(115200);
Serial.println("Starting...");
//========================== Initalizing Radio SPI ==================================
hspi = SPIClass(HSPI);
LoRa.setSPI(hspi);
LoRa.setPins(RF_CS, RF_RST, RF_IRQ);// set CS, reset, IRQ pin
if (!LoRa.begin(868E6)) Serial.println("LoRa init failed. Check your connections.");
//============================== MY ADDRESS =========================================
localAddress = 0x02;
//===================================================================================
LoRa.setTxPower(5);
Serial.println("LoRa init succeeded.");
LoRa.onReceive(onPackageReceive);
LoRa.receive();
//===================================================================================
}
void loop() {
delay(100);
}
void onPackageReceive(int packetSize) {
if (packetSize) {
Serial.println("Received packet");
char buff[16];
memset(buff, 0, 16);
int ix = 0;
while (LoRa.available()) {
char c = (char)LoRa.read();
buff[ix++] = c;
}
byte to = buff[0];
if (to == localAddress || to == 0xff) {
byte type = buff[1];
byte from = buff[2];
Serial.println("============== Package Received ==============");
Serial.print(" To: "); Serial.println(to, HEX);
Serial.print(" From: "); Serial.println(from, HEX);
Serial.print(" Type: "); Serial.println(type, HEX);
Serial.print(" RSSI: "); Serial.println(LoRa.packetRssi());
Serial.println("=============================================");
if (type == 0x02) {
sendPackage(from, 0x03);
Serial.println("Sent!");
}
}
}
}
void sendPackage(byte destination, byte type) {
LoRa.beginPacket();
LoRa.write(destination);
LoRa.write(type);
LoRa.write(localAddress);
LoRa.endPacket();
LoRa.receive();
Serial.println("=============# Package Sent #=============");
Serial.print(" To: "); Serial.println(destination, HEX);
Serial.print(" From: "); Serial.println(localAddress, HEX);
Serial.print(" Package Type: "); Serial.println(type, HEX);
Serial.println("==========================================");
}Now the error points to Serial.println("Sent!");, which is weird at best... "Sent!" does indeed get printed, as we can see in the Serial Monitor output...
0x400d20a9: Print::println(char const*) at C:\Users\Pepe\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32\Print.cpp line 196
0x400d20a9: Print::println(char const*) at C:\Users\Pepe\AppData\Local\Arduino15\packages\esp32\hardware\esp32\1.0.6\cores\esp32\Print.cpp line 196
0x400d0ead: onPackageReceive(int) at D:\Users\pepe\Desktop\arduino\sketch_nov06a/sketch_nov06a.ino line 70So the crash happens on line 196 of Print.cpp:
193 size_t Print::println(const char c[])
194 {
195 size_t n = print(c);
196 n += println(); // <-------- Say whu'?
197 return n;
198 }There's nothing there that warrants throwing a fit. What happens if you remove altogether Serial.println("Sent!");, or move it to the sendPackage() routine? Does it still break?
PepeProf
Hello,
Currently I am having problems sending back a package from the receive function called by onReceive(). Everything is working correctly, all the pins are connected correctly and sending/receiving is working just fine.
First I send a package to the ESP32 with type 0x02 and the ESP answers back with package type 0x03. And in my case the package is sent back (type 0x03), but the ESP32 crashes, after it tries to leave the onPackageReceive() function.
Problematic ESP code:
Serial monitor:
Decoded backtrace:
I would really appreciate if someone could help me.