Hi, is there a way to get bluetooth to work using MicroPython with VSCode. I use the “Inkplate 6 COLOR” and couldn’t find a module available.
Thanks
Hi @sagaterial3
For Bluetooth you would use the regular python bluetooth library, it’s not Inkplate specific. Below is a simple example showing that.
"""Basic BLE example for Inkplate 6COLOR.
Advertises as "Inkplate6COLOR" and exposes one write-only GATT
characteristic. Whatever text a BLE central (e.g. nRF Connect app)
writes to it gets shown on the e-paper screen.
"""
import time
import bluetooth
from micropython import const
from inkplate6_color import Inkplate
_IRQ_CENTRAL_CONNECT = const(1)
_IRQ_CENTRAL_DISCONNECT = const(2)
_IRQ_GATTS_WRITE = const(3)
_TEXT_CHAR = (
bluetooth.UUID("00002a56-0000-1000-8000-00805f9b34fb"),
bluetooth.FLAG_WRITE,
)
_TEXT_SERVICE = (
bluetooth.UUID("0000181a-0000-1000-8000-00805f9b34fb"),
(_TEXT_CHAR,),
)
DEVICE_NAME = "Inkplate6COLOR"
def advertising_payload(name):
payload = bytearray((2, 0x01, 0x06)) # flags: general discoverable, no BR/EDR
name_bytes = name.encode()
payload += bytearray((len(name_bytes) + 1, 0x09)) + name_bytes
return payload
class InkplateBLE:
def __init__(self, inkplate):
self.inkplate = inkplate
self.ble = bluetooth.BLE()
self.ble.active(True)
self.ble.irq(self._irq)
((self._text_handle,),) = self.ble.gatts_register_services((_TEXT_SERVICE,))
self._show_status("Advertising as " + DEVICE_NAME)
self._advertise()
def _irq(self, event, data):
if event == _IRQ_CENTRAL_CONNECT:
self._show_status("BLE central connected")
elif event == _IRQ_CENTRAL_DISCONNECT:
self._show_status("Disconnected, re-advertising")
self._advertise()
elif event == _IRQ_GATTS_WRITE:
_, value_handle = data
if value_handle == self._text_handle:
raw = self.ble.gatts_read(self._text_handle)
try:
text = raw.decode()
except UnicodeError:
text = repr(raw)
self._show_status(text)
def _advertise(self):
self.ble.gap_advertise(100_000, adv_data=advertising_payload(DEVICE_NAME))
def _show_status(self, text):
self.inkplate.clear_display()
self.inkplate.set_text_size(2)
self.inkplate.print_text(20, 180, text)
self.inkplate.display()
inkplate = Inkplate()
inkplate.begin()
ble = InkplateBLE(inkplate)
# IRQ callbacks fire from the BLE stack in the background; keep the script alive.
while True:
time.sleep(1)
I was then able to connect to it using the nRF Connect app:
