Compiling core at 80Mhz

[dvizma]

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Hardware:

Board: ESP32 Dev Module
Core Installation/update date: 11/jul/2017
IDE name: Arduino IDE
Flash Frequency: 40Mhz
Upload Speed: 115200

Description:

Hi,

I have been using Arduino IDE for ESP32. As per my search, ESP32 core for Arduino has been compiled with 240 Mhz clock. I have never used IDF before. Can someone tell the basics steps how to compile a new arduino core for esp32 with 80Mhz clock.

Thanks

[JacoFourie]

You just set it in the options of the board in the IDE.

[dvizma]

Isn't that option for flash frequency?
As per discussions in this issue thread #487 . I need to recompile the core at 80Mhz. Wanna know how. Thanks.
#487

[lbernstone]

1. Install arduino-esp32 as per instructions (https://.com/espressif/arduino-esp32)
2. Install esp-idf as per instructions (https://.com/espressif/esp-idf)
3. Get esp-idf in line with arduino-esp32. Looks through the commit log for the latest IDF update (I search for IDF). Use git log to get the full uuid for that commit and then git checkout that version.
4. Follow the instructions to install arduino as an esp-idf component (https://.com/espressif/arduino-esp32/blob/master/docs/esp-idf_component.md). You can use any project. I use the blink example.
5. Copy the sdkconfig from arduino-esp32/tools/sdk/sdkconfig into your project.
6. Run make menuconfig and set the cpu speed (or whatever change you want). Save that sdkconfig.
7. Make the project
8. Copy build/esp32/libesp32.a into arduino-esp32/tools/sdk/lib/ .
9. Profit??

[Aalz]

When I copied the file and tried to load the sketch through the Arduino Ide, an error was displayed:

D:/ESPRESSIF/esp-idf/components/esp32/panic.c:648: undefined reference to `xPortInterruptedFromISRContext'

collect2.exe: error: ld returned 1 exit status

exit status 1

[Aalz]

How to compare esp-idf versions?

[Buffalchill]

hello Ilberstone

when I do....

7. Make the project

then i get this error:
$ make
CXX build/arduino/libraries/BLE/src//BLEServer.o
C:/msys32/home/esp/hello_world/components/arduino/libraries/BLE/src/BLEServer.cpp:21:22: fatal error: gatt_api.h: No such file or directory
compilation terminated.
make[1]: *** [/home/esp/esp-idf/make/component_wrapper.mk:286: libraries/BLE/src//BLEServer.o] Fehler 1
make: *** [c:/msys32/home/esp/esp-idf/make/project.mk:467: component-arduino-build] Fehler 2

[lbernstone]

Return to step 3 and try again. You must do a git checkout <version> in esp-idf to match the <version> that arduino-esp32 was compiled at. That currently is git checkout f586f5e690e687f8db219a8b509bbf483fc416d6

[Buffalchill]

ok thanks! but i didnt unterstand it completely.
how do i know which arduino core version is currently installed ?

did i unterstand it right that git checkout <version>

will change the IDF to the newer or older commit (version) ?

[lbernstone]

larryb@larryb-EZpad:~/arduino-1.8.5/hardware/espressif/esp32$ git log | grep -i idf | head -1
    Update IDF to f586f5e (#1296)
larryb@larryb-EZpad:~/arduino-1.8.5/hardware/espressif/esp32$ cd ~/esp32/esp-idf/
larryb@larryb-EZpad:~/esp32/esp-idf$ git log | grep f586f5e
commit f586f5e690e687f8db219a8b509bbf483fc416d6
larryb@larryb-EZpad:~/esp32/esp-idf$ git checkout f586f5e690e687f8db219a8b509bbf483fc416d6
M	components/bt/lib
M	components/esp32/lib
HEAD is now at f586f5e6 Merge branch 'feature/get-started-20180130' into 'master'

[Buffalchill]

thank you man! <3

[PhilColbert]

Hi, this seems to take the menuconfig back to the previous menu system without all the new bluetooth error and memory system... any ideas how to keep the new menus , while using ESPIDF as a component or can we not do that just yet?