Search found 158 matches
- Wed Jun 29, 2022 11:49 pm
- Forum: ESP32 boards
- Topic: Convert Time Epoch in Date ,OpenWeather
- Replies: 2
- Views: 1793
Re: Convert Time Epoch in Date ,OpenWeather
upython uses a different start time to the usual unix epoch used by python, subtract 946684800 before converting to human readable.
- Tue Jun 28, 2022 11:23 pm
- Forum: General Discussion and Questions
- Topic: bits to bytes
- Replies: 58
- Views: 23800
Re: bits to bytes
I sympathise. Some days it just feels like there are too many layers of abstraction between me & the ESP32. In my salad days I'd stick a CRO probe on the modulation pin of a radio transmitter to check the data, now days I'm reduced to checking the duration of a raw lora burst in effort to verify how...
- Tue Jun 28, 2022 6:26 am
- Forum: General Discussion and Questions
- Topic: How to check if file exists?
- Replies: 5
- Views: 12284
Re: How to check if file exists?
If you're a simple soul like me & chuck most everything in the root directory.....
import os
if 'my_file' in os.listdir(): print('found it')
import os
if 'my_file' in os.listdir(): print('found it')
- Tue Jun 28, 2022 6:00 am
- Forum: General Discussion and Questions
- Topic: bits to bytes
- Replies: 58
- Views: 23800
Re: bits to bytes
thnx. When I google 'escape' I got a lot of stuff about 'escape characters' but I don't think that's what you're referring too? Can you explain 'escape' in this context?
- Mon Jun 27, 2022 3:10 am
- Forum: General Discussion and Questions
- Topic: bits to bytes
- Replies: 58
- Views: 23800
Re: bits to bytes
My head says you're right jimmo & it will be fine over lora but heart is saying 'you can't trust it, use chr/ord (where wysiwyg) instead'
- Mon Jun 27, 2022 1:12 am
- Forum: General Discussion and Questions
- Topic: config wifi channel in STA mode
- Replies: 13
- Views: 3571
Re: config wifi channel in STA mode
Possible thread drift here Dave, but the LTE modem in the pycom gpy was a bugger for waking up thinking it was connected (when it wasn't because there was no attachment). Interested to read your post about esp32 wifi doing likewise. Is there some timeout in a router we could adjust to keep a wifi co...
- Sun Jun 26, 2022 11:22 pm
- Forum: General Discussion and Questions
- Topic: bits to bytes
- Replies: 58
- Views: 23800
Re: bits to bytes
So no easy way to get b'40 80' ? Seems to me python is being as slippery with octal/hex here as it sometimes is with types?
- Sun Jun 26, 2022 2:17 am
- Forum: General Discussion and Questions
- Topic: config wifi channel in STA mode
- Replies: 13
- Views: 3571
Re: config wifi channel in STA mode
I assume you're running something like.... if not sta.isconnected(): print('connecting to '+AP, end=' '); sta.connect(AP, pwd) for i in range(10): if sta.isconnected(): ESP32 generally get a connect within a couple of seconds from wakeup (with RSSIs around -80dbm, I haven't locked the router to a pa...
- Sun Jun 26, 2022 1:27 am
- Forum: General Discussion and Questions
- Topic: bits to bytes
- Replies: 58
- Views: 23800
Re: bits to bytes
Your 1 liner looked super elegant Christian so I ran it forwards & backwards to see if performed as well as as it looks >>> bits=[0,0,0,1,0,0,0,0,1,0,0,0] >>> struct.pack('<H', sum(b*(1<<(i^7)) for i, b in enumerate(bits))) b'\x10\x80' >>> struct.pack('<H', sum(b*(1<<(i)) for i, b in enumerate(bits)...
- Fri Jun 24, 2022 9:51 pm
- Forum: Raspberry Pi microcontroller boards
- Topic: Change the main program runtime
- Replies: 7
- Views: 2790
Re: Change the main program runtime
you could put something like
into main.py?
Code: Select all
import 'my_other_prog'
into main.py?