Smart office station

1. Set up development environment

(1) Download the micropython from http://www.micropython.org/download/esp32spiram/ , the current version is v1.19.1 (2022-06-18)

(2) Install micropython on ESP32

esptool --chip esp32 --port /dev/ttyUSB0 erase_flash esptool --chip esp32 --port /dev/ttyUSB0 --baud 460800 write_flash -z 0x1000 esp32spiram-20220618-v1.19.1.bin

(3) Verify if Micropython is installed correctly.

Notice that the speed of rate should be 115200 instead of 9600 when you connect to port but see nothing.

(4) Set up coding environment:

Download the vscode Download the RT-Thread plugin: https://marketplace.visualstudio.com/items?itemName=RT-Thread.rt-thread-micropython#Introduction Use RT-Thread to connect to ESP32.

(5) Send the code from vscode in to ESP32

Normally, it is noe necessary to change boot.py If you have a new folder to send, create the folder on ESP32 first. E.g. You want to send src/image.png to ESP32. First run os.mkdir('src') on ESP32 to create the path. Then send the src to ESP32. Once the files under src is changed, sync the whole src to ESP32 instead of only send changed file.

(6) Check the config.json of projeck and follow or change the port number of it to connect the ESP32 with sensors.

2. Set up env and transport code into a batch of devices. (Only tested on linux)

Plug in all devices with USB Port run batch_setup.sh

Hardware requirement

• Windows/Linux/Macos
• ESP32
• Sensors:Dht22,OLED monitor

To Use it in WSL2

• Set up usb connection in WSL2
• sudo bash batch_setup.sh

3. Set up blink<1>

Clone and build the blink1-tool

git clone https://github.com/todbot/blink1-tool
cd blink1-tool
make

Install required libraries and rebuild

sudo apt-get install libusb-1.0-0-dev
make

Set up udev rules

wget https://github.com/todbot/blink1-tool/blob/main/51-blink1.rules
sudo udevadm control --reload
sudo udevadm trigger

Copy the tool and test the LED

cp blink1-tool/blink1-tool "$PATH:/home/..."
sudo blink1-tool --add_udev_rules
blink1-tool -m 100 --rgb=255,0,255

4. Flashing the Firmware Master and copy to new ESP32

(1) Flashing the ESP32 Firmware Master

Only need to be executed once. To read the flash from an ESP32 chip, you can use the following command:

sudo esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 115200 read_flash 0 ALL esp32_dump.bin

(2) Flashing the Firmware onto ESP32

Before flashing a new firmware onto the ESP32, you need to erase the current flash. After erasing, you can then write the new firmware:

sudo esptool.py --port /dev/ttyUSB0 erase_flash
sudo esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 115200 write_flash 0x00000 esp32_dump.bin

5. Set up PATH in shell files

Change to the appropriate PATH

(1) batch_setup.sh

Add the local bin directory to the PATH for this script

export PATH=$PATH:/home/ptw/.local/bin   

(2) batch_setup.sh

Define the location of the log file

LOG_FILE="/home/ptw/Schreibtisch/smart/smart_office_station/logfile.log"        

Run batch_setup.sh

sudo -u ptw bash -c "cd /home/ptw/Schreibtisch/smart/smart_office_station; bash batch_setup.sh"  # Optionally, redirect output to the log file: >> $LOG_FILE 2>&1

6. Run the Program

(1)Direct firmware flashing

bash usb_monitor.sh

(2)Flash the system and files

bash usb_monitor.sh --from file

7. Rules of usb light

-Copying: red

-Copy succeed: green

-Standby: white

Caution! Start the program before plugging in the ESP32 USB. Only insert when the light turns white.

Reference

http://www.micropython.org/download/esp32/ https://www.jianshu.com/p/9097920ea915