MicroPython
Basic Bluetooth usage #16580
Replies: 2 comments 3 replies
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the nrf port has a bluetooth implementation which differs from all other ports, therefore most examples for ble will not work. but there is a pr from @andrewleech bringing the standard bluetooth api to the nrf port. I used it in one of my projects and made good experiences. |
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Well, it feels a little like abusing the code, but based on the example code for: At the moment it feels like DIY 'Homer Simpson style' :) Code for sending: from ubluepy import Peripheral
from time import sleep_ms as sms
# Dummy packet / Data packet
dp = bytearray([2,1,6,3,3,170,254,23,
22,170,254,16,238,0])
p = Peripheral()
def send():
dp.extend(bytearray([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]))
dp.extend(bytearray(1))
while 1:
p.advertise(data=dp)
sms(250)
p.advertise_stop()
sms(1000)
send()Code for receiving: from ubluepy import Scanner
from time import ticks_ms as tms
from time import sleep_ms as sms
s = Scanner()
while 1:
scan_rslt = s.scan(1000)
for e in scan_rslt:
sd = e.getScanData()
if len(sd):
try:
ft, st, tt = sd[0], sd[1], sd[2]
if ( ft[0] == 1
and ft[1] == 'AD_TYPE_FLAGS'
and ft[2] == b'\x06'
and st[0] == 3
and st[1] == 'AD_TYPE_16BIT_SERVICE_UUID_COMPLETE'
and st[2] == b'\xaa\xfe'
and tt[0] == 22
and tt[1] == 'AD_TYPE_SERVICE_DATA'):
payload = tt[2][5:-1]
print(f'{tms()} {payload}')
except:
pass |
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I didn’t even try the low level API. Thank you for sharing. |
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This may not be exactly what you're looking for, but I saw "BLE" and "data in advertising packet" and I perked up. Recently, I got it in my head to send temperature/humidity readings in a BLE advertising packet. I'm using an ESP32 as the sender and Home Assistant as the receiver, but the idea is similar I think. I have the code on GitHub: https://github.com/DavesCodeMusings/BLESP32/ I found MicroPython's |
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Thanks, but like jkorte-dev posted above:
So that's not going to work :( In the meantime I found that this might not be my best option and abandoned the idea of using Bluetooth in the project |
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Hi all,
I would like to know if I could use Bluetooth for my project. Currently I have Xiao nRF52840 sense boards (I need the IMU on these) that are connected to LoRa RFM95 modules. I got everything working like it should.
However, I would like to try using Bluetooth on the nRF's. Bluetooth is totally new to me and I hope someone can tell me if what I'm thinking of is even possible using ubluepy.
The messages I send are byte arrays, max ~16 bytes long (see this topic: https://github.com/orgs/micropython/discussions/16533)
Now i found this page: https://pybricks.com/project/micropython-ble-communication/
They use advertisement packets to transfer data without the need to establish a connection.
Sorry if I sound like a total n00b here but if anyone could tell me if this is even possible with ubluepy, that would be a great help.
In the meantime I'll explore the examples (https://github.com/micropython/micropython/tree/master/ports/nrf/examples)
and read up on what Bluetooth is all about.
Thanks for reading!
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