ESP32-GATEWAY software development

This repo contains ESP-IDF examples for Olimex ESP32-GATEWAY.

Since there are major hardware changes between revision C and D, there are two folders with examples! The clock source for the Ethernet is different!

If you own newer board, revision D or newer then get the IDF exmaples from folder "Newest-hardware-revisions"

If you have board revision B or C then get the demos from folder "Hardware-revisions-B-or-C"

If you are looking for Arduino demos just install the official ESP32 json, our board is supported in the official branches.

Install ESP-IDF

To run the examples in this directory or your own you'll need to get SDK from Espressif called ESP-IDF. We recommend reading their setup guide.

When IDF_PATH is in your PATH you're ready to continue with example running.

Run examples

To run our example all you need to do is:

• Run menuconfig

    make menuconfig

* Configure serial flasher

ESP32-GATEWAY has built-in serial flasher to help users upload their projects.
Connect the board to PC via USB-micro cable. New serial device should
apear, for example **/dev/ttyUSB0**. Then in the menuconfig configure
flasher as follows:

```
Serial flasher config  --->
        (/dev/ttyUSB0) Default serial port
        Default baud rate (115200 baud) --->
        [*] Use compressed upload
        Flash SPI mode (DIO)  --->
        Flash SPI speed (40 MHz) --->
        Flash size (4 MB) --->
        [*] Detect flash size when flashing bootloader
        Before flashing (Reset to bootloader)  --->
        After flashing (Reset after flashing)  --->
        'make monitor' baud rate (115200 bps)  --->
```

* Configure example

Some examples have their own configuration menu. If it's present
you can modify the options:

```
Example Configuration  --->
        Select board relay to use in the example (Relay 1)  --->
```

Exit and save configuration.

• Compile example To compile example run:

make

• Uploading example As we previously mention uploading application is done automatically. If serial flasher is configured do:

make flash

You'll see something like this:

esptool.py v2.0-beta3
Flashing binaries to serial port /dev/ttyUSB0 (app at offset 0x10000)...
esptool.py v2.0-beta3
Connecting........__
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Flash params set to 0x0220
Compressed 15808 bytes to 9219...
Wrote 15808 bytes (9219 compressed) at 0x00001000 in 0.8 seconds (effective 154.5 kbit/s)...
Hash of data verified.
Compressed 356080 bytes to 168292...
Wrote 356080 bytes (168292 compressed) at 0x00010000 in 14.9 seconds (effective 191.3 kbit/s)...
Hash of data verified.
Compressed 3072 bytes to 82...
Wrote 3072 bytes (82 compressed) at 0x00008000 in 0.0 seconds (effective 1905.4 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting...

Optionally you can open serial monitor by typing:

make monitor