Have the same problem and it is solved indeed by uing an ESP8266 Arduino version prior to 3.0.0. Thanks for the tip! But that is a temp solution only. Anyone an idea when a new version of MySensors will be there?

Well, problem solved. I removed the ESP8266 harware libs and reinstalled them now using the Boards Manager. Then it works fine. But a manual download of the ESP8266 hardware lib causes all these comilation errors.

Thanks.

I found out that the same errors occur if i load mySensor library 2.1 or 2.0. It is not related to 2.2 version of mySensor.
So what goes wrong? For this matter, I downloaded the ESP8266 hardware library again, and ran
python get.py

So the ESP8266 harware lib is the newest. And then still it generates all those error, again and again.

I certainly did.
When i compile the following Sketch, I do get the first compile error mentioned above:

#define ESP8266

#define MY_BAUD_RATE 9600
#define MY_GATEWAY_ESP8266
#define MY_ESP8266_SSID "xxx"
#define MY_ESP8266_PASSWORD "xxx"
#define MY_PORT 5003      
#define MY_GATEWAY_MAX_CLIENTS 2

#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#include <MySensors.h>

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

What is wrong with this sketch (besides that it does nothing)?

Hi all,

I must be crazy, but I have a strange but big problem with version 2.2 of mySensor. I use it on esp8266 (Wemos), and with a previous version my program compiled without a problem. I upgraded to mySensor 2.2 and 2 problem arised. First my compilation first resulted in:

In file included from D:\users\DirkJan\Arduino\libraries\MySensors/MySensors.h:405:0,

                 from D:\users\DirkJan\Arduino\Projecten\Project_WCsniffer\IoT21_WCsniffer010\IoT21_WCsniffer010.ino:31:

D:\users\DirkJan\Arduino\libraries\MySensors/hal/architecture/ESP8266/MyMainESP8266.cpp:57:53: error: declaration of C function 'void ets_update_cpu_frequency(int)' conflicts with

 extern "C" void ets_update_cpu_frequency(int freqmhz);

                                                     ^

In file included from D:\users\DirkJan\Arduino\hardware\espressif\esp8266\cores\esp8266/pgmspace.h:10:0,

                 from D:\users\DirkJan\Arduino\hardware\espressif\esp8266\cores\esp8266/Arduino.h:255,

                 from sketch\IoT21_WCsniffer010.ino.cpp:1:

D:\users\DirkJan\Arduino\hardware\espressif\esp8266/tools/sdk/include/ets_sys.h:218:6: error: previous declaration 'void ets_update_cpu_frequency(uint32_t)' here

 void ets_update_cpu_frequency(uint32_t ticks_per_us);

      ^

exit status 1
Fout bij het compileren voor board WeMos D1 R2 & mini

So I changed file MyMainESP8266.cpp and replace int for uint32_t. When I then compile the Sketch, it comes with the following load of errors:

Archiving built core (caching) in: C:\Users\DirkJan\AppData\Local\Temp\arduino_cache_514641\core\core_espressif_esp8266_d1_mini_CpuFrequency_160,VTable_flash,FlashSize_4M1M,LwIPVariant_v2mss536,Debug_Disabled,DebugLevel_None____,FlashErase_none,UploadSpeed_256000_8c8da037c528d73cc750ee74e4676a97.a
C:\Users\DirkJan\AppData\Local\Temp\arduino_build_931425/arduino.ar(core_esp8266_main.cpp.o): In function `esp_yield':

D:\users\DirkJan\Arduino\hardware\espressif\esp8266\cores\esp8266/core_esp8266_main.cpp:87: multiple definition of `esp_yield'

sketch\IoT21_WCsniffer010.ino.cpp.o:D:\users\DirkJan\Arduino\libraries\MySensors/hal/architecture/ESP8266/MyMainESP8266.cpp:81: first defined here

C:\Users\DirkJan\AppData\Local\Temp\arduino_build_931425/arduino.ar(core_esp8266_main.cpp.o): In function `esp_schedule':

D:\users\DirkJan\Arduino\hardware\espressif\esp8266\cores\esp8266/core_esp8266_main.cpp:94: multiple definition of `esp_schedule'

sketch\IoT21_WCsniffer010.ino.cpp.o:D:\users\DirkJan\Arduino\libraries\MySensors/hal/architecture/ESP8266/MyMainESP8266.cpp:89: first defined here

C:\Users\DirkJan\AppData\Local\Temp\arduino_build_931425/arduino.ar(core_esp8266_main.cpp.o): In function `init_done()':

D:\users\DirkJan\Arduino\hardware\espressif\esp8266\cores\esp8266/core_esp8266_main.cpp:144: multiple definition of `init_done()'

sketch\IoT21_WCsniffer010.ino.cpp.o:D:\users\DirkJan\Arduino\libraries\MySensors/hal/architecture/ESP8266/MyMainESP8266.cpp:151: first defined here

C:\Users\DirkJan\AppData\Local\Temp\arduino_build_931425/arduino.ar(core_esp8266_main.cpp.o): In function `__yield':

D:\users\DirkJan\Arduino\hardware\espressif\esp8266\cores\esp8266/core_esp8266_main.cpp:98: multiple definition of `__yield'

sketch\IoT21_WCsniffer010.ino.cpp.o:D:\users\DirkJan\Arduino\libraries\MySensors/hal/architecture/ESP8266/MyMainESP8266.cpp:94: first defined here

C:\Users\DirkJan\AppData\Local\Temp\arduino_build_931425/arduino.ar(core_esp8266_main.cpp.o): In function `optimistic_yield':

D:\users\DirkJan\Arduino\hardware\espressif\esp8266\cores\esp8266/core_esp8266_main.cpp:109: multiple definition of `optimistic_yield'

sketch\IoT21_WCsniffer010.ino.cpp.o:D:\users\DirkJan\Arduino\libraries\MySensors/hal/architecture/ESP8266/MyMainESP8266.cpp:105: first defined here

C:\Users\DirkJan\AppData\Local\Temp\arduino_build_931425/arduino.ar(core_esp8266_main.cpp.o):(.bss.resetInfo+0x0): multiple definition of `resetInfo'

sketch\IoT21_WCsniffer010.ino.cpp.o:D:\users\DirkJan\Arduino\Projecten\Project_WCsniffer\IoT21_WCsniffer010/DJ_Tools.ino:63: first defined here

C:\Users\DirkJan\AppData\Local\Temp\arduino_build_931425/arduino.ar(core_esp8266_main.cpp.o): In function `user_init':

D:\users\DirkJan\Arduino\hardware\espressif\esp8266\cores\esp8266/core_esp8266_main.cpp:168: multiple definition of `user_init'

sketch\IoT21_WCsniffer010.ino.cpp.o:D:\users\DirkJan\Arduino\libraries\MySensors/hal/architecture/ESP8266/MyMainESP8266.cpp:160: first defined here

C:\Users\DirkJan\AppData\Local\Temp\arduino_build_931425/arduino.ar(core_esp8266_main.cpp.o):(.bss.core_release+0x0): multiple definition of `core_release'

sketch\IoT21_WCsniffer010.ino.cpp.o:D:\users\DirkJan\Arduino\Projecten\Project_WCsniffer\IoT21_WCsniffer010/DJ_Tools.ino:63: first defined here

C:\Users\DirkJan\AppData\Local\Temp\arduino_build_931425/arduino.ar(core_esp8266_main.cpp.o):(.ver_number+0x0): multiple definition of `core_version'

sketch\IoT21_WCsniffer010.ino.cpp.o:(.ver_number+0x0): first defined here

What do i do wrong???

Thanks for any help,
Dirk Jan

Thanks! That is what I was looking for!

Hi, I start using MySensor. I red that MySensor also stores data in EEPROM, to have it available after the device has rebooted (like the state of a relais). What address locations does it need/use? This is relevant, because I use EEPROM in my Sketch as well.

Regards, DJ