kevinkm / upydevice

Python library to interface with MicroPython devices through Wifi (Websockets/WebREPL) , BLE or Serial connection (USB)

uPydevice

Python library to interface with MicroPython devices through REPL:

• Websockets/WebREPL (WiFi)
• BleREPL (Bluetooth Low Energy)
• Serial REPL (USB)

Install

pip install upydevice or pip install --upgrade upydevice

Example usage:

ANY DEVICE: Device

This will return a Device based on address (first argument) type.

e.g.

>>> from upydevice import Device
>>> esp32_ws = Device('192.168.1.56', 'mypass', init=True, autodetect=True)
>>> esp32_ws
WebSocketDevice @ ws://192.168.1.53:8266, Type: esp32, Class: WebSocketDevice
Firmware: MicroPython v1.16 on 2021-06-19; ESP32 module with ESP32
(MAC: 30:ae:a4:23:35:64, RSSI: -43 dBm)
>>> esp32_sr = Device('/dev/tty.SLAB_USBtoUART', init=True)
>>> esp32_sr
SerialDevice @ /dev/tty.SLAB_USBtoUART, Type: esp32, Class: SerialDevice
Firmware: MicroPython v1.16 on 2021-06-19; ESP32 module with ESP32
CP2104 USB to UART Bridge Controller, Manufacturer: Silicon Labs
(MAC: 30:ae:a4:23:35:64)
>>> esp32_ble = Device('F53EDB2E-25A2-45A7-95A5-4D775DFE51D2', init=True)
>>> esp32_ble
BleDevice @ F53EDB2E-25A2-45A7-95A5-4D775DFE51D2, Type: esp32 , Class: BleDevice
Firmware: MicroPython v1.16 on 2021-06-19; ESP32 module with ESP32
(MAC: 30:ae:a4:23:35:64, Local Name: esp_ble, RSSI: -70 dBm)

WIRELESS DEVICE (WebREPL Protocol): WebSocketDevice

This requires WebREPL to be enabled in the device.

>>> from upydevice import WebSocketDevice
>>> esp32 = WebSocketDevice('192.168.1.56', 'mypass', init=True, autodetect=True)
>>> esp32.wr_cmd('led.on()')
>>> esp32.wr_cmd("uos.listdir()")
['boot.py', 'webrepl_cfg.py', 'main.py'] # this output is stored in [upydevice].output

>>> esp32.output
['boot.py', 'webrepl_cfg.py', 'main.py']
>>>> esp32.wr_cmd('x = [1,2,3];my_var = len(x);print(my_var)')
3
# Soft Reset:
>>> esp32.reset()
    Rebooting device...
    Done!

BLE DEVICE (BleREPL Protocol): BleDevice

This requires BleREPL to be enabled in the device. (This is still experimental and performance may be platform and device dependent)

>>> from upydevice import BleDevice
>>> esp32 = BleDevice("9998175F-9A91-4CA2-B5EA-482AFC3453B9", init=True)
Device with address 9998175F-9A91-4CA2-B5EA-482AFC3453B9 was not found
Trying again...
Device with address 9998175F-9A91-4CA2-B5EA-482AFC3453B9 was not found
Trying again...
Connected to: 9998175F-9A91-4CA2-B5EA-482AFC3453B9
>>> esp32.wr_cmd('led.on()')
>>> esp32.wr_cmd("uos.listdir()")
['boot.py', 'webrepl_cfg.py', 'main.py', 'lib'] # this output is stored in [upydevice].output

>>> esp32.output
['boot.py', 'webrepl_cfg.py', 'main.py', 'lib']
>>> esp32.wr_cmd('x = [1,2,3];my_var = len(x);print(my_var)')
3

# Soft Reset:
>>> esp32.reset()
    Rebooting device...
    Done!

SERIAL DEVICE (USB) : SerialDevice

Works for any serial device (esp, pyboard, circuitplayground...)

from upydevice import SerialDevice
>>> esp32 = SerialDevice('/dev/tty.SLAB_USBtoUART', autodetect=True) # baudrate default is 115200
>>> esp32.wr_cmd('led.on()')
>>> esp32.wr_cmd("uos.listdir()")
['boot.py', 'webrepl_cfg.py', 'main.py'] # this output is stored in [upydevice].output

>>> esp32.output
['boot.py', 'webrepl_cfg.py', 'main.py']
>>>> esp32.wr_cmd('x = [1,2,3];my_var = len(x);print(my_var)')
3
# Soft Reset:
>>> esp32.reset()
    Rebooting device...
    Done!

Testing devices with Pytest:

Under test directory there are example tests to run with devices. This allows to test MicroPython code in devices interactively, e.g. button press, screen swipes, sensor calibration, actuators, servo/stepper/dc motors ... e.g.

$ pytest test_esp_serial.py -s

Made with upydevice:

• upydev
• Jupyter_upydevice_kernel

More advanced examples:

Phantom module

This module has some python 'phantom' classes to make easier the interaction with the same classes in the upydevice.

Available classes:

• MicroPython classes:
  • MACHINE (just unique_id() method)
  • Pin
  • I2C
  • UOS
  • pyb_LED
  • pyb_Timer
  • pyb_Servo
  • machine_Timer
  • WLAN
  • AP
• Sensor classes:
  • LSM9DS1
  • BME280
  • ADS1115
• Custom classes:
  • IRQ_MG (This needs IRQ_util.py in the micropython device)
  • STREAMER (to use as a super class, and this needs STREAMER_util.py in the micropython device)
  • IMU_STREAMER (This needs IMU_util.py in the micropython device)
  • BME_STREAMER (This needs BME_util.py in the micropython device)
  • ADS_STREAMER (This needs ADS_util.py in the micropython device)

Examples:

UOS

from upydevice import WebSocketDevice
from upydevice.phantom import UOS
esp32 = WebSocketDevice('192.168.1.73', 'mypass')
uos = UOS(esp32)
uos.listdir('/')
 ['boot.py', 'webrepl_cfg.py', 'main.py']
uos.uname()
 (sysname='esp32', nodename='esp32', release='1.11.0', version='v1.11-530-g25946d1ef on 2019-10-29', machine='ESP32 module with ESP32')

Upydevice_utils

These are some useful modules to put in the micropython device:

• IRQ_util.py : A module to test/setup hardware interrupts easily
• STREAMER_util.py: A module with U_STREAMER 'super' class to make streaming sensor data in real time easily.
• IMU_util.py: A module with U_IMU_IRQ and U_IMU_STREAMER example classes.
• BME_util.py: A module with U_BME_IRQ and U_BME_STREAMER example classes.
• ADS_util.py: A module with U_ADS_IRQ and U_ADS_STREAMER example classes.

Example: phantom IMU_STREAMER + U_IMU_STREAMER classes

In MicroPython

from IMU_util import i2c, U_IMU_STREAMER
from lsm9ds1 import LSM9DS1
imu_st = U_IMU_STREAMER(LSM9DS1, i2c)

Now the device is ready to be controlled from Python3

In Python3

from upydevice import WebSocketDevice
esp32 = WebSocketDevice('192.168.1.73', 'mypass')
from upydevice.phantom import IMU_STREAMER
imu_st = IMU_STREAMER(esp32, name='imu_st', init_soc=True)
	192.168.1.43  # (This prints host ip)

# SIMPLE SAMPLE (this uses upydevice.cmd)
imu_st.read_data()
	array('f', [-0.4462279975414276, -0.12023930251598358, -0.9497069716453552])
imu_st.setup_mode('gyro')
imu_st.read_data()
	array('f', [-0.007476807106286287, 0.9719849824905396, -0.0971985012292862])
imu_st.setup_mode('mag')
imu_st.read_data()
	array('f', [0.4848633110523224, 0.1734618991613388, 0.2396239936351776])
imu_st.setup_mode('acc')
imu_st.read_data()
	array('f', [-0.4470824897289276, -0.12023930251598358, -0.9493408203125])

# SOCKETS
imu_st.start_server()
	Server listening...
	Connection received from: 192.168.1.73:50185
imu_st.shot_read(imu_st.data_print, timeout=1)
	X: -0.44537353515625, Y: -0.12030029296875, Z: -0.94879150390625 (g=-9.8m/s^2)

# CONTINUOUS STREAMING THROUGH SOCKETS + TEST

imu_st.continuous_stream(imu_st.data_print_static, timeout=10, static=True, test=True)
	Streaming IMU ACCELEROMETER: X, Y, Z (g=-9.8m/s^2),fq=100.0Hz


       X              Y              Z
^C  -0.4431        -0.1184        -0.9482

	Flushed!
	Done!

imu_st.get_stream_test()
  STREAM TEST RESULTS ARE:
  TEST DURATION : 11.31895899772644 (s)
  DATA PACKETS : 1077 packets
  SAMPLES PER PACKET : 1
  VARIABLES PER SAMPLE : 3; ['X', 'Y', 'Z']
  SIZE OF PACKETS: 12 bytes
  Period: 10 ms ; Fs:100.0 Hz, Data send rate: 95 packets/s of 1 samples
  DATA TRANSFER RATE (kBps): 1.11328125 kB/s
  DATA TRANSFER RATE (Mbps): 0.00890625 Mbps

imu_st.stop_server()

Examples (scripts, GUI ...)