I’m writing because I have a problem with Arduino OPTA and Blynk. If I insert the BlynkSimpleWifi.h library and the Blynk.config in my sketch everything is fine; as soon as I try to insert Blynk.run and compile the sketch I get this error which reports: "C:\Users\Facility\AppData\Local\Temp\arduino\sketches\BE48FF858D50271795B7F35445286FB0/…..\cores\arduino_mbed_opta_opta_split_100_0,target_core_cm7, security_none_41bcd6cecbbb7a037f4552f498a6888f\core.a(wiring_analog.cpp.o): In function analogWrite': C:\Users\Facility\AppData\Local\Arduino15\packages\arduino\hardware\mbed_opta\4.0.10\cores\arduino/wiring_analog.cpp:74: undefined reference to g_AAnalogOutPinDescription’
collect2.exe: error: ld returned 1 exit status
exit status 1
Compilation error: exit status 1
I attach skecht
#include "secret.h"
#include <WiFi.h> ///per WIFI
#include <BlynkSimpleWifi.h> ///per blynk
void setup() {
Blynk.config(BLYNK_AUTH_TOKEN);
BlynkTimer timer;
if (WiFi.status() != WL_CONNECTED) {
Serial.println("Connessione WiFi persa. Tentativo di ristabilire la connessione...");
WiFi.begin(ssid, pass);
Serial.println("Connessione alla rete WiFi in corso...");
}
else{
Serial.println();
Serial.println("- NETWORK INFORMATION");
Serial.print("- Connesso alla rete ");
// Display network IP
IPAddress ip = WiFi.localIP();
Serial.print("- IP address: ");
Serial.println(ip);
// Display network RSSI
long rssi = WiFi.RSSI();
Serial.print("- Signal strength (RSSI): ");
Serial.println(rssi);
}
}
void loop() {
if (WiFi.status() == WL_CONNECTED) {
Blynk.run();
timer.run();
}
}
I hope that someone can solve this problem. In this moment I’m using Arduino iot Cloud. I have done montlhy subscription. I wouldn’t transfer all application on Arduino Cloud. I can’t have two difference applications. How did you solve your issue? Thanks for sharing.
i had the same problem with an Arduino OPTA. I looked inside the file “wiring_analog.cpp”, in the given path, from the error message and searched
for the undefined reference “g_AAnalogOutPinDescription”.
The Variable is declared in “Arduino.h” file and there is a comment which navigates me to OPTA/variant.cpp. I am not a C++ programmer so i don’t
understand every line of this code but in the variant.cpp is no Pins-Table for g_AAnalogOutPinDescription only a g_AAnalogPinDescription without the word “Out”.
So i decided to comment out the declaration and the reference to this Variable as shown below. After that my code is compiled sucessfully and works.