Raspberry Pi 4 (Debain10 | Buster) / Toolchain ESP32

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Raspberry Pi 4 (Debain10 | Buster) / Toolchain ESP32

Created: 03 August 2019 | Written by vincent | Print | Email | Hits: 6091

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Raspberry Pi 4 (Debain10 | Buster) / Toolchain ESP32

Basic Goal: have a Raspberry Pi 4, with Desktop, Arduino iDE (v 1.8.9) Installed then in the Arduino IDE go to Tools - Boards --> Board Manager then Search for ESP32 you will find [esp32 by Espressif Systems] install it.

		docs.espressif.com
	Setup Linux Toolchain from Scratch
Login as Pi	# sudo -i
Install Prerequisites	# apt install -y gcc git wget make libncurses-dev flex bison gperf python python-pip python-setuptools python-serial python-cryptography python-future python-pyparsing
Compile the Toolchain from Source	# apt install -y gawk gperf grep gettext libncurses-dev python python-dev automake bison flex texinfo help2man libtool libtool-bin
Create the working directory and go into it:	# mkdir -p ~/esp # cd ~/esp


gcc 8 will be installed but we need gcc 6 to compile
To check gcc version:	# gcc -v
To install gcc version 6:	# apt install -y g++-6 gcc-6
To switch between gcc6 and gcc8:	# update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 1 --slave /usr/bin/g++ g++ /usr/bin/g++-8 # update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 2 --slave /usr/bin/g++ g++ /usr/bin/g++-6 # update-alternatives --config gcc

Download crosstool-NG and build it:	# git clone https://github.com/espressif/crosstool-NG.git # cd crosstool-NG
Important Bash 5 have to been accepted	# vi configure.ac
around line 193 add \|5	\|$EGREP '^GNU bash, version (3\.[1-9]\|4\|5)')
save and Quit
	# ./bootstrap && ./configure --enable-local && make install

then Quit sudo with	# exit

Build the toolchain:	# ./ct-ng xtensa-esp32-elf
	# ./ct-ng build
	chmod -R u+w builds/xtensa-esp32-elf


	# cd /root
there should be a esp32 directory	# ls -alth
	# cp esp32 -r --parents /home/pi/.arduino15/packages/


	github \| espressif/arduino-esp32 \| Installation instructions for Debian / Ubuntu OS

first know wehre your /Arduino/hardware is	# find / -xdev -name hardware



	cd ~/Arduino/hardware mkdir -p espressif && \ cd espressif && \ git clone https://github.com/espressif/arduino-esp32.git esp32 && \ cd esp32 && \ git submodule update --init --recursive && \ cd tools && \ python3 get.py
		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.