Device name and serial number example
This documents Python example code for obtaining the friendly name of a BBC micro:bit through the micro:bit Python Editor.
This code displays the device name and (optionally) the device serial number so the micro:bit can be properly labeled. This is the micro:bit Python version of the micro:bit MakeCode block:
Code
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
# Imports go at the top
from microbit import *
import machine
import struct
# https://arc.net/l/quote/vbhsxtkp How to find the name of your micro:bit
def microbit_friendly_name():
length = 5
letters = 5
codebook = [
['z', 'v', 'g', 'p', 't'],
['u', 'o', 'i', 'e', 'a'],
['z', 'v', 'g', 'p', 't'],
['u', 'o', 'i', 'e', 'a'],
['z', 'v', 'g', 'p', 't']
]
name = []
# Derive our name from the nrf51822's unique ID
_, n = struct.unpack("II", machine.unique_id())
ld = 1
d = letters
for i in range(0, length):
h = (n % d) // ld
n -= h
d *= letters
ld *= letters
name.insert(0, codebook[i][h])
return "".join(name)
# https://arc.net/l/quote/ygrtbswg How to find the micro:bit serial number
def get_serial_number(type=hex):
NRF_FICR_BASE = 0x10000000
DEVICEID_INDEX = 25
return type(machine.mem32[NRF_FICR_BASE + (DEVICEID_INDEX*4)] & 0xFFFFFFFF)
# Code in a 'while True:' loop repeats forever
while True:
display.scroll(microbit_friendly_name().upper())
sleep(500)
# display.scroll(get_serial_number()[2:])
# sleep(500)
1234567890123456789012345678901234567890123456789012345678901234567890
Links
| Link | Description |
|---|---|
| https://arc.net/l/quote/vbhsxtkp | How to find the name of your micro:bit |
| https://arc.net/l/quote/ygrtbswg | How to find the micro:bit serial number |
| https://makecode.microbit.org/99369-62072-41802-44928 | MakeCode device-name project |
| https://tech.microbit.org/hardware/edgeconnector/ | micro:bit pinouts |
| https://docs.python.org/3.4/ | Python 3.4 documentation |
#microbit #embedded #Python