jerryscript/ESP-PREREQUISITES.md at 181570ff41dec2c090dbb19a5aaea0930f43f340

mirror of https://github.com/jerryscript-project/jerryscript.git synced 2025-12-15 16:29:21 +00:00

Akos Kiss 9ced3addaa Bump ESP8266 target to SDK v2.1.0 (#2697 )

Until now, the ESP8266 target used a non-tagged git hash revision
of the RTOS SDK (from Oct 2017). Moreover, the compiler was also a
custom-built gcc.

This commit sets the RTOS SDK version to v2.1.0, released Oct 2018,
which is the latest old-style SDK for ESP. The commit also changes
the used gcc to an Espressif-provided pre-built toolchain, which is
tagged for the (latest) v3.0.1 SDK release.

(The SDK bump is not to the latest SDK version because the new
v3.x line of the SDK is "ESP-IDF style", which is incompatible with
the current target code base. On the other hand, the toolchain
comes from the latest SDK release because the v2.x line had no
pre-built toolchain suggestions -- but it builds v2.x sources
correctly.)

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu

2019-01-15 08:35:39 +01:00

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Preparation

Accessories

You need,

3.3V power supply. You can use bread board power (+5V, +3.3V). I used LM317 like this;
- Use LM317
- R1 = 330 Ohm, R2 = 545 Ohm (1K + 1.2K in parallel)
- 5V 2A adaptor
USB to RS-232 Serial + RS-232 Serial to Digital or USB-to-RS232 TTL converter

Tools

The rest of this document will assume that you download all necessary tools into a common directory structure. For the sake of simplicity, $HOME/Espressif will be used as the root of this structure. Feel free to deviate from this but then adapt all the paths accordingly.

mkdir $HOME/Espressif

Toolchain

Download the toolchain pre-built for your development platform to $HOME/Espressif and untar it. E.g., on Linux/x86-64:

cd $HOME/Espressif
tar xvfz xtensa-lx106-elf-linux64-1.22.0-88-gde0bdc1-4.8.5.tar.gz

Espressif SDK: use Espressif official

cd $HOME/Esprissif
git clone https://github.com/espressif/ESP8266_RTOS_SDK.git -b v2.1.0

This version is tested and works properly.

ESP image tool

cd $HOME/Espressif
wget -O esptool_0.0.2-1_i386.deb https://github.com/esp8266/esp8266-wiki/raw/master/deb/esptool_0.0.2-1_i386.deb
sudo dpkg -i esptool_0.0.2-1_i386.deb

ESP upload tool

cd $HOME/Espressif
git clone https://github.com/themadinventor/esptool

Set environment variables

Set environment variables, might also go in your .profile:

export PATH=$HOME/Espressif/xtensa-lx106-elf/bin:$PATH
export SDK_PATH=$HOME/Espressif/ESP8266_RTOS_SDK
export ESPTOOL_PATH=$HOME/Espressif/esptool
export BIN_PATH=(to output folder path)

Test writing with Blinky example

Get the source

found one example that works with SDK V1.2 (which is based on FreeRTOS, as of writing)

https://github.com/mattcallow/esp8266-sdk/tree/master/rtos_apps/01blinky

Compile

Read 2A-ESP8266__IOT_SDK_User_Manual_EN document in this link.

It's configured 2048KB flash

BOOT=new APP=1 SPI_SPEED=80 SPI_MODE=QIO SPI_SIZE_MAP=5 make
BOOT=new APP=2 SPI_SPEED=80 SPI_MODE=QIO SPI_SIZE_MAP=5 make

or old way... this works not sure this is ok.

make BOOT=new APP=0 SPI_SPEED=80 SPI_MODE=QIO SPI_SIZE_MAP=2

Flashing

power off ESP8266 board
connect GPIO0 to GND, connect GPIO2 to VCC
power on
write

sudo $HOME/Espressif/esptool/esptool.py \
  --port /dev/ttyUSB0 write_flash \
  0x00000 $SDK_PATH/bin/"boot_v1.7.bin" \
  0x01000 $BIN_PATH/upgrade/user1.2048.new.5.bin \
  0x101000 $BIN_PATH/upgrade/user2.2048.new.5.bin \
  0x3FE000 $SDK_PATH/bin/blank.bin \
  0x3FC000 $SDK_PATH/bin/esp_init_data_default.bin

change /dev/ttyUSB1 to whatever you have.

or the old way...this works not sure this is ok.

cd $BIN_PATH
sudo $HOME/Espressif/esptool/esptool.py \
--port /dev/ttyUSB0 write_flash \
0x00000 eagle.flash.bin 0x40000 eagle.irom0text.bin

power off
disconnect GPIO0 so that it is floating
connect GPIO2 with serial of 470 Ohm + LED and to GND
power On

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