rpi (raspbian stretch) install doesn't seem to install toolchain

[CosmicBandito69]

Hardware:

Board: DOIT ESP32 DEV KIT V1
Core Installation/update date: 29/Oct/2017
IDE name: Arduino IDE
Flash Frequency: ?40Mhz?
Upload Speed: ?115200?

Description:

On a raspberry pi 3, installed arduino IDE, then followed instructions to install esp32 arduino core, which appeared to work. However, the xtensa gcc binaries did not get installed to the proper location (if at all). boards show up in the board manager, but attempts to compile sketches fail because the binaries can't be found, because they aren't there. Everything works fine for esp8266, so arduino is set up correctly.

There is no xtensa-esp32-elf directory in home/pi/Arduino/hardware/espressif/esp32/tools

get.py does not appear to be working correctly. I tried the unicode fix, but it still didn't work, and it wouldn't download the binaries.

Sketch:

//Change the code below by your sketch
uint64_t chipid;  

void setup() {
	Serial.begin(115200);
}

void loop() {
	chipid=ESP.getEfuseMac();//The chip ID is essentially its MAC address(length: 6 bytes).
	Serial.printf("ESP32 Chip ID = %04X",(uint16_t)(chipid>>32));//print High 2 bytes
	Serial.printf("%08X\n",(uint32_t)chipid);//print Low 4bytes.

	delay(3000);

}

Debug Messages:

Error:
fork/exec /home/pi/Arduino/hardware/espressif/esp32/tools/xtensa-esp32-elf/bin/xtensa-esp32-elf-g++: no such file or directory
Error compiling for board DOIT ESP32 DEVKIT V1.

[me-no-dev]

we do not have the toolchain for RPI yet :) maybe you can build crosstool-ng yourself?

[CosmicBandito69]

Gosh, it's so much easier when someone else does it :) . Thank you for the response. I'll give it a go. I heard it takes 2.5 hours after starting. It's that starting part (setting it up to compile) that's going to take me a while.

[CosmicBandito69]

update: After following instructions available online here... At 85 minutes... Still going. Follow instructions to disable parallel processing before "./ct-ng build build.1" Will update.

[CosmicBandito69]

Oh no, am I building it twice? It says it finished at 241min (!!!!) (running off usb stick) and seems to now be duplicating the same steps. Crap. I didn't want the build.1 argument, did I? How stupid. I don't see any binaries anywhere. Sigh. When it is built, what am I supposed to copy over to the esp32/tools directory? It looks like I'm 20 min into another 241min build. :( Cannot find the binaries.

[CosmicBandito69]

Success! Well another 238 minutes later I changed the permissions, as per instructions, and then copied the xtensa-esp32-elf directory (located in builds directory) over to /home/pi/Arduino/hardware/espressif/esp32/tools/ using copy and paste in the file browsers. And... The sketch compiled. Thank you. If you change the .config file to restrict parallel processing, I don't think you need the second argument "build.1", so "./ct-ng build" would take half as long.

[me-no-dev]

Hey :) glad you succeeded :) BTW want to share that toolchain?

[CosmicBandito69]

How can I share it? The zip file is 77.5 mb (just the xtensa-esp32-elf directory). I seem to have a limit of 10mb on attachments at this comment section. Apparently I have a 25mb email attachment restriction. I guess I don't know how. Which directories do you need specifically under xtensa-esp32-elf?

[me-no-dev]

maybe something like google drive?

[CosmicBandito69]

here should link you to my google drive with toolchain in 7z and zip form. unzip them in the tools directory. You should only need one or the other, whether you have 7zip or not. 7z brought the size down to 14mb.

[CosmicBandito69]

Well, my usb stick crashed, so I set everything up on a sd card install, like I was installing the esp32 arduino core on a normal linux system, and used the 7z (or zip) file from link (also above and below). The rpi binaries don't download when you run get.py, so instead of running get.py to download them, use link, download and unzip either the .7z or the .zip file into the /home/pi/Arduino/hardware/espressif/esp32/tools directory. It makes a directory, "xtensa-esp32-elf" Sketches compile now. Warning: sketch compile can take a very, very long time on rpi.

Today, I also rebuilt the toolchain again (In case someone wanted to do it themselves). I wanted to see if it would work without changing the .config file to turn off parallel builds, but it indeed crashed with a segmentation fault. Changing the one line in the .config file allowed it to finish. Also, you don't need the build.1 argument. just put "./ct-ng build"

[Jcspoza]

Thanks @CosmicBandito69 for the effort . It works on my RPI 3B pretty well (after a 1st try with a hook!!). Speed in compilation is acceptable, tested with short examples like ChipID or WIFIscan on a DOIT ESP32 DEV KIT V1.

[CosmicBandito69]

I’m glad it helped. Too bad it doesn’t just compile, and they could auto generate binaries that are up to date. I hope you are not using the binaries I shared. They are old, and likely have bugs. Try to compile newer binaries. I have the same pi and esp32. It takes hours to compile (10?) the arduino binaries. Cheers, — CosmicBandito69

…

On Dec 28, 2018, at 5:52 PM, Jose Carlos Santamaria Poza ***@***.***> wrote: Thanks @CosmicBandito69 for the effort . It works on my RPI 3B pretty well (after a 1st try with a hook!!). Speed in compilation is acceptable, tested with short examples like ChipID or WIFIscan on a DOIT ESP32 DEV KIT V1 You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.