Search on the net for example with lookup table, it is quicker than doing loop calculations.
crc8 is not very big.
Search found 47 matches
- Tue Feb 09, 2021 10:34 am
- Forum: Programs, Libraries and Tools
- Topic: Fast crc8
- Replies: 49
- Views: 29684
- Sat Jan 30, 2021 11:16 pm
- Forum: Programs, Libraries and Tools
- Topic: Pure Micropython LoRa library
- Replies: 4
- Views: 6682
Re: Pure Micropython LoRa library
Thanks for posting. I would like to see an option for users to set up Lora parameters individually , BW, SF and CR. class ModemConfig(): Bw125Cr45Sf128 = (0x72, 0x74, 0x04) Bw500Cr45Sf128 = (0x92, 0x74, 0x04) Bw31_25Cr48Sf512 = (0x48, 0x94, 0x04) Bw125Cr48Sf4096 = (0x78, 0xc4, 0x0c) To save me looki...
- Wed Dec 16, 2020 10:29 pm
- Forum: ESP32 boards
- Topic: ESP-Now support for ESP32 (and ESP8266)
- Replies: 368
- Views: 1513273
Re: ESP-Now support for ESP32 (and ESP8266)
Glenn, thank you and well done for implementing ESP-NOW. Have been waiting for this for a long time, could be a game changer for me in using ESP's with micropython. Sorry haven't had a chance to look at all of the documentation or play with it yet, but is it possible to assign arbitrary Mac address ...
- Mon Nov 30, 2020 9:26 pm
- Forum: ESP32 boards
- Topic: Best driver for ili9341 display
- Replies: 40
- Views: 26223
Re: Best driver for ili9341 display
I am currently actively considering supporting the ili9341 I hope you do, its a very popular and reasonably good value TFT display. I have and still am using them a lot in the arduino world, with SPI interface. AFAIK the most popular touch controller is resistive XPT2046 with SPI interface. There s...
- Thu Nov 19, 2020 8:06 pm
- Forum: ESP32 boards
- Topic: Official touch display with ESP32.
- Replies: 4
- Views: 4287
Re: Official touch display with ESP32.
low cost way to build projects Its not a low cost display at £28.80 each in micropython store. I understand that Damian needs to make money somewhere, but ... For majority of hobbyists ILI9341 or similar TFT derivatives from Aliexpress is the way to go. Would also be good to have full numeric keypa...
- Sat Sep 05, 2020 5:51 am
- Forum: Programs, Libraries and Tools
- Topic: Beta of Thonny 3.3 with several MP-related improvements
- Replies: 2
- Views: 2559
Re: Beta of Thonny 3.3 with several MP-related improvements
Thanks for an update.
Have been using Thonny with uPython boards for a fairly long time without major issues.
Very easy and quick productivity on Windows environment.
Windows 10 antivirus complained as unsafe when downloading exe, had to create an exception, have reported it as safe.
Have been using Thonny with uPython boards for a fairly long time without major issues.
Very easy and quick productivity on Windows environment.
Windows 10 antivirus complained as unsafe when downloading exe, had to create an exception, have reported it as safe.
- Sat Aug 08, 2020 12:11 am
- Forum: Programs, Libraries and Tools
- Topic: ds18x20 driver, updated with alarm/resolution support
- Replies: 1
- Views: 2460
Re: ds18x20 driver, updated with alarm/resolution support
read_temp for ds18b20 returns only integer value?
- Tue May 26, 2020 10:23 am
- Forum: Programs, Libraries and Tools
- Topic: MQBoard - Micro-Framework for MicroPython Boards Managed via MQTT
- Replies: 10
- Views: 8690
Re: MQBoard - Micro-Framework for MicroPython Boards Managed via MQTT
Impressive development with emphases on reliable remote access. Well done and keep up a good work. I have been avoiding MQTT due to network reliability risk of having to relay on single WiFi AP and single non redundant broker. I guess it should be possible to implement MQTT network with a backup WiF...
- Tue Feb 25, 2020 4:52 am
- Forum: Hardware Projects
- Topic: pyBoard compatible E-Bike Computer - The pyEC
- Replies: 14
- Views: 15777
- Tue Jan 21, 2020 10:06 pm
- Forum: General Discussion and Questions
- Topic: uart.read() error with PYBD-SF6W
- Replies: 6
- Views: 4278
Re: uart.read() error with PYBD-SF6W
Also, the PYBD is quite a bit faster than the pyboard 1.1, so if you call uart.read before the data has actually arrived back from the servo, then you'll get None, because the data just isn't there yet. Is it really that hard for developers to implement a callback functionality for UART, both Rx an...