Summary

Example project demonstrating how to use Xiao Sense ESP32 sense device to capture connect to wifi, BLE, capture photos, and send REST requests.

Sample Programs

Save photo

from cam import CameraBoard

cam = CameraBoard(os)
image_data = cam.take_photo()
cam.save_photo("my_image_2", image_data)

Connect wifi

from comms import Comms

comms = Comms()
comms.create_wifi_connection('wifi_credentials.json')

Example BLE App

Note: Requires modification of wait_for_connection, wait_for_str_write, and sensor_task if seeking custom solution.

See BLE Web App for web app source code.

from comms import Comms
import uasyncio as asyncio
from random import randint

# Get sensor readings
def get_random_value():
    return randint(0,10)

# Create Comms Object
comms = Comms()

# Create BLE Object and register ble service
comms.create_ble_connection('19b10000-e8f2-537e-4f6c-d104768a1214', "ESP32")
#comms.create_wifi_connection('wifi_credentials.json')

# Create Sensor characteristic
comms.ble.register_characteristic('sensor', '19b10001-e8f2-537e-4f6c-d104768a1214', read=True, notify=True)
comms.ble.register_characteristic('wifi', '19b10003-e8f2-537e-4f6c-d104768a1214', read=True, write=True, notify=True, capture=True)

# Register service(s)
comms.ble.register_services()

async def main():
    t1 = asyncio.create_task(comms.ble.sensor_task('sensor', get_random_value))
    t2 = asyncio.create_task(comms.ble.wait_for_connection()) #wait_for_int_write
    t3 = asyncio.create_task(comms.ble.wait_for_str_write('wifi'))
    await asyncio.gather(t1, t2)
asyncio.run(main())

How to install required libraries via mpremote

# list connected devices
python -m mpremote connect list

# Connect device
python -m mpremote connect COM10

# Install library
python -m mpremote mip install aioble
python -m mpremote mip install asyncio