Is a real-time operating systems for the Internet of Things (IoT) that was introduced in early 2016,. It runs on a from different architecture (x86, Arm, RISC-V, etc.), and Linaro even launched 96boards IoT compliant hardware like board that are designed to run Zephyr Project.

More recently, Linaro CEO revealed are shipping with Zephyr Project OS, so I thought it might be a good time to give it a try. Target Board – Wemos Lolin32 I only had, and some ESP32 boards, so I went with the latter since it comes with WiFi. But instead of re-using some of my existing boards, I asked Banggood whether they could send Wemos Lolin32, which they did. They sell it for, but any other ESP32 board should do. Click to Enlarge The board comes with two headers that you can solder if you wish.

I did it with the pins facing upwards, but if you want to insert the board into a breadboard, they should obviously face downwards instead. Click to Enlarge In the steps below, we’ll mostly use the micro USB port, the reset button, and on-board user LED connected to GPIO 5. I’ll follow the website for Linux, and try a few samples. I’ll do so in Ubuntu 16.04, but they should be easy enough to adapt to Windows or Mac OS, as both OS are also supported. Install ESP32 Toolchain and SDK First let’s install xtensa-esp32 toolchain and dependencies in Ubuntu 16.04 64-bit.

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Sudo apt install -no-install-recommends git cmake ninja-build gperf ccache doxygen dfu-util device-tree-compiler python3-ply python3-pip python3-setuptools python3-wheel xz-utils file make gcc-multilib autoconf automake libtool cd /zephyr pip3 install -user -r scripts/requirements.txt. Ninja flash 1/57 Generating alwaysrebuild Building for board esp32 2/2 Flashing esp32 Using runner: esp32 Converting ELF to BIN esptool.py v2.3.1 Flashing ESP32 on /dev/ttyUSB0 (921600bps) esptool.py v2.3.1 Connecting. Chip is ESP32D0WDQ6 (revision 1) Features: WiFi, BT, Dual Core Uploading stub. Running stub. Stub running. Changing baud rate to 921600 Changed. Configuring flash size.

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Auto-detected Flash size: 4MB Flash params set to 0x0220 Wrote 16384 bytes at 0x00001000 in 0.2 seconds (601.2 kbit/s). Hash of data verified. Hard resetting via RTS pin. Ets Jun 8 2016 00:22:57 rst:0x1 (POWERONRESET),boot:0x13 (SPIFASTFLASHBOOT) flash read err, 1000 etsmain.c 371 ets Jun 8 2016 00:22:57 rst:0x10 (RTCWDTRTCRESET),boot:0x13 (SPIFASTFLASHBOOT) configsip: 0, SPIWP:0xee clkdrv:0x00,qdrv:0x00,ddrv:0x00,cs0drv:0x00,hddrv:0x00,wpdrv:0x00 mode:DIO, clock div:2 load:0x3ffb0000,len:96 load:0x3ffb0060,len:360 load:0x3ffb01c8,len:1864 load:0x40080000,len:1024 load:0x40080400,len:96 load:0x40080460,len:9548 load:0x400c0000,len:0 entry 0x40080694. Booting Zephyr OS v1.12.0-rc2-68-g158ea97.

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Hello World!