Flash diymore ESP32 LoRa with Espruino and show some text on its display

diymore_esp32_lora_espruino_setup.md

Things that are specific for the diymore ESP32 LoRa in combination with Espruino

• You need to use this as a Generic ESP32 Device
• You need to flash the device with a bootloader, partitions and the firmware
• The baud is 115200

How to

1. Find out your port

ls /dev/tty.*  

2. Erase previous flash

esptool.py --port "YOUR_PORT" erase_flash

3. Download required bins

Download the latest esp32 tgz espruino_XXX_esp32.tgz from http://www.espruino.com/binaries/travis/master/

4. Flash device

esptool.py --chip esp32 --port "YOUR_PORT" --baud 115200 --after hard_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader.bin 0x8000 partitions_espruino.bin 0x10000 espruino_esp32.bin

5. Set up the Espruino IDE

• Open https://www.espruino.com/ide/
• In Settings > Communications set the Baud Rate to 115200

5. Display some text on the device's screen

function start(){
 // write some text
 g.drawString("Hello World!",2,2);
 // write to the screen
 g.flip();
}


I2C1.setup({ scl: D15, sda: D4 });
var g = require("SSD1306").connect(I2C1, start, { rst: D16 });