Tost69
commented
4 years ago Hello v-c,
ESP32 v1 is a dual-core processor. There are functions that can only be executed on one of the cores (if I remember well, e.g. deepsleep / wakeup must use core 1 and not core 0). You cannot control this with SETUP() and LOOP(), because then always core 1 will be used.
You can check the core within LOOP() with:
Serial.print("Setup: Executing on core ");
Serial.println(xPortGetCoreID());To use core 0 explicitly, you have to use xTaskCreatePinnedToCore in SETUP():
-
define a global task handle:
TaskHandle_t handleAutoConnect; -
write your code which have to be pinned to a core (same as your coding in LOOP)
void taskAutoConnect(void *optionalArgs) { for (;;) { // some code, e.g. AutoConnect::begin delay(1000); } } -
start the task within SETUP():
// create task TaskAC: function = taskAutoConnect, handle = handleAutoConnect, core = 0, priority = 1, stack = 10000, parameters = NULL xTaskCreatePinnedToCore(taskAutoConnect, "TaskAutoConnect", 10000, NULL, 1, &handleAutoConnect, 0);
The function taskAutoConnect is bound to core = 0 and all subroutines called and all objects generated by this function now also are bound to this core. That means that you cannot have the AutoConnect portal on core 0 and a part of it (OTA update) running on core 1 (and I don't think it would be a good idea to implement task handling into this library).
(If you need the power of an ESP32 but don't need the two cores, the new ESP32 v2 may be more attractive to you :-))
Kind regards, Tom
v-c
Hieromon
OTA updates from a web browser fails when using the AutoConnect library on a ESP32CAM board. The only diagnostic available is this printed in the serial monitor:
abort() was called at PC 0x4013fb01 on core 1
I believe this is the same as reported here:
https://github.com/espressif/arduino-esp32/issues/3937
Is there a way to specify which core of the ESP32 to run the part of the code that does the OTA Update?