jerryscript/targets/esp8266

About

Files in this folder (embedding/esp8266) are copied from examples/project_template of esp_iot_rtos_sdk and modified for JerryScript. You can view online from this page.

How to build JerryScript for ESP8266

1. SDK

Follow this page to setup build environment

2. Patch ESP-SDK for JerryScript

Follow this page to patch for JerryScript building. Below is a summary after SDK patch is applied.

3. Building JerryScript

cd ~/harmony/jerryscript
# clean build
make -f ./targets/esp8266/Makefile.esp8266 clean
# or just normal build
make -f ./targets/esp8266/Makefile.esp8266

Output files should be placed at $BIN_PATH

4. Flashing for ESP8266 ESP-01 board (WiFi Module)

Steps are for ESP8266 ESP-01(WiFi) board. Others may vary. Refer http://www.esp8266.com/wiki/doku.php?id=esp8266-module-family page.

4.1 GPIO0 and GPIO2

Before flashing you need to follow the steps.

1. Power off ESP8266
2. Connect GPIO0 to GND and GPIO2 to VCC
3. Power on ESP8266
4. Flash

4.2 Flashing

make -f ./targets/esp8266/Makefile.esp8266 flash

Default USB device is /dev/ttyUSB0. If you have different one, give with USBDEVICE, like;

USBDEVICE=/dev/ttyUSB1 make -f ./targets/esp8266/Makefile.esp8266 flash

5. Running

1. Power off
2. Disonnect(float) both GPIO0 and GPIO2
3. Power on

Sample program here works with LED and a SW with below connection.

• Connect GPIO2 to a LED > 4K resistor > GND
• Connect GPIO0 between VCC > 4K resistor and GND

If GPIO0 is High then LED is turned on longer. If L vice versa.