ESP8266 Community Forum

Hi there! Is there any way to avoid looping function in the ESP8266 integrated?
I mean to do it in the same way that it is possible to achieve it in most of Atmel MCU, taking advantage of the speed processor.
This would be the example code and here is a link to a post on this topic on the AVR Freaks site.
http://www.avrfreaks.net/forum/attiny85 ... stead-4mhz
I hope something like this is possible.
Thanks in advance.



ERROR MESSAGE:
Archiving built core (caching) in: C:\Users\Nazim\AppData\Local\Temp\arduino_cache_248748\core\core_esp8266_esp8266_nodemcuv[code]2_CpuFrequency_80,UploadSpeed_115200,FlashSize_4M3M_08186d0190bdc8e1d53eb1574336cbab.a
C:\Users\Nazim\AppData\Local\Temp\arduino_build_799418/arduino.ar(core_esp8266_main.cpp.o):(.text._ZL12loop_wrapperv+0x4): undefined reference to `loop'

C:\Users\Nazim\AppData\Local\Temp\arduino_build_799418/arduino.ar(core_esp8266_main.cpp.o): In function `loop_wrapper':

C:\Users\Nazim\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.3.0\cores\esp8266/core_esp8266_main.cpp:110: undefined reference to `loop'

collect2.exe: error: ld returned 1 exit status

exit status 1
Error compiling for board NodeMCU 1.0 (ESP-12E Module).

Simply use an empty loop() :

martinayotte wrote:Simply use an empty loop() :

Code: Select allvoid loop() {}


Have you seen my post at AVR Freaks?

Yes ! ... but I must admit that I didn't took time to read the whole thing.
I've understood that you wish to have the tightest loop to get high speed GPIO toggling.
But what else I've missed ?
The fact that you still have an empty loop() to satisfy the linker doesn't prevent you to do the while() in setup().

EDIT : (almost forgot) But beware that WiFi won't be able to run if you stuck in a while() and you will need to disable the watchdog.