Roland Takacs
121 lines
3.1 KiB
Markdown
121 lines
3.1 KiB
Markdown
#### Preparation
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##### Accessories
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You need,
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* 3.3V power supply. You can use bread board power (+5V, +3.3V). I used LM317 like this;
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* Use [LM317](http://www.ti.com/lit/ds/symlink/lm317.pdf)
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* R1 = 330 Ohm, R2 = 545 Ohm (1K + 1.2K in parallel)
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* 5V 2A adaptor
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* USB to RS-232 Serial + RS-232 Serial to Digital or USB-to-RS232 TTL converter
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#### Tools
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The rest of this document will assume that you download all necessary tools into
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a common directory structure. For the sake of simplicity, `$HOME/Espressif` will
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be used as the root of this structure. Feel free to deviate from this but then
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adapt all the paths accordingly.
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```
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mkdir $HOME/Espressif
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```
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##### Toolchain
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Download the [toolchain](https://github.com/espressif/ESP8266_RTOS_SDK/tree/v3.0.1#get-toolchain)
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pre-built for your development platform to `$HOME/Espressif` and untar it. E.g.,
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on Linux/x86-64:
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```
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cd $HOME/Espressif
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tar xvfz xtensa-lx106-elf-linux64-1.22.0-88-gde0bdc1-4.8.5.tar.gz
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```
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##### Espressif SDK: use Espressif official
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```
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cd $HOME/Esprissif
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git clone https://github.com/espressif/ESP8266_RTOS_SDK.git -b v2.1.0
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```
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This version is tested and works properly.
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##### ESP image tool
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```
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cd $HOME/Espressif
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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
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sudo dpkg -i esptool_0.0.2-1_i386.deb
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```
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##### ESP upload tool
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```
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cd $HOME/Espressif
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git clone https://github.com/themadinventor/esptool
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```
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##### Set environment variables
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Set environment variables, might also go in your `.profile`:
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```
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export PATH=$HOME/Espressif/xtensa-lx106-elf/bin:$PATH
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export SDK_PATH=$HOME/Espressif/ESP8266_RTOS_SDK
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export ESPTOOL_PATH=$HOME/Espressif/esptool
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export BIN_PATH=(to output folder path)
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```
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#### Test writing with Blinky example
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##### Get the source
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found one example that works with SDK V1.2 (which is based on FreeRTOS, as of writing)
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* https://github.com/mattcallow/esp8266-sdk/tree/master/rtos_apps/01blinky
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##### Compile
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Read `2A-ESP8266__IOT_SDK_User_Manual_EN` document in
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[this](http://bbs.espressif.com/viewtopic.php?f=51&t=1024) link.
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It's configured 2048KB flash
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```
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BOOT=new APP=1 SPI_SPEED=80 SPI_MODE=QIO SPI_SIZE_MAP=5 make
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BOOT=new APP=2 SPI_SPEED=80 SPI_MODE=QIO SPI_SIZE_MAP=5 make
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```
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or old way... this works not sure this is ok.
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```
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make BOOT=new APP=0 SPI_SPEED=80 SPI_MODE=QIO SPI_SIZE_MAP=2
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```
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##### Flashing
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* power off ESP8266 board
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* connect GPIO0 to GND, connect GPIO2 to VCC
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* power on
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* write
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```
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sudo $HOME/Espressif/esptool/esptool.py \
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--port /dev/ttyUSB0 write_flash \
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0x00000 $SDK_PATH/bin/"boot_v1.7.bin" \
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0x01000 $BIN_PATH/upgrade/user1.2048.new.5.bin \
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0x101000 $BIN_PATH/upgrade/user2.2048.new.5.bin \
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0x3FE000 $SDK_PATH/bin/blank.bin \
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0x3FC000 $SDK_PATH/bin/esp_init_data_default.bin
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```
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_change `/dev/ttyUSB1` to whatever you have._
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or the old way...this works not sure this is ok.
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```
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cd $BIN_PATH
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sudo $HOME/Espressif/esptool/esptool.py \
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--port /dev/ttyUSB0 write_flash \
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0x00000 eagle.flash.bin 0x40000 eagle.irom0text.bin
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```
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* power off
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* disconnect GPIO0 so that it is floating
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* connect GPIO2 with serial of 470 Ohm + LED and to GND
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* power On
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