Search found 47 matches

by uCTRL
Tue Dec 11, 2018 3:23 am
Forum: ESP32 boards
Topic: ESP32 and LoRa
Replies: 70
Views: 100293

Re: ESP32 and LoRa

After all, WiPy's are not that expensive and of sound quality.
https://pycom.io/webshop/

You must have shares in Pycom or get paid a commission.
by uCTRL
Sat Nov 24, 2018 7:34 am
Forum: General Discussion and Questions
Topic: RS-485 flow control for Modbus RTU
Replies: 1
Views: 4354

RS-485 flow control for Modbus RTU

Had a look at couple of other topics that have touched on the subject but there appears to be no solution to micropython implementation. Modbus RTU with RS-485 interface is a half duplex serial uart based protocol and is widely used in the industrial remote control and sensing applications. Importan...
by uCTRL
Fri Nov 09, 2018 9:39 am
Forum: ESP32 boards
Topic: Non blocking console/keyboard input
Replies: 3
Views: 4284

Re: Non blocking console/keyboard input

Thanks Peter

I would also like to know if there is a simpler system call to access existing OS keyboard scan.
by uCTRL
Fri Nov 09, 2018 7:46 am
Forum: ESP32 boards
Topic: Non blocking console/keyboard input
Replies: 3
Views: 4284

Non blocking console/keyboard input

For ESP32 Uart console/keyboard input.

Basically, need advice for non-blocking keyboard input from Uart console port, as scanned 1 character at the time.
input() and sys.stdin are blocking.

Thanks
by uCTRL
Sun Oct 21, 2018 2:59 am
Forum: ESP32 boards
Topic: Is _thread supported on ESP32 with SPIRam?
Replies: 8
Views: 8032

Re: Is _thread supported on ESP32 with SPIRam?

BUMP!

Any feedback from developers of this port?
by uCTRL
Sun Oct 21, 2018 2:51 am
Forum: Other Boards
Topic: [nRF52] sleep time passing too quickly
Replies: 1
Views: 1836

Re: [nRF52] sleep time passing too quickly

Is your main CPU oscillator configured correctly?
Check to see at frequency CPU is running, machine.freq().
by uCTRL
Mon Oct 15, 2018 10:10 pm
Forum: Drivers for External Components
Topic: Bidirectional communication using I2C
Replies: 5
Views: 4355

Re: Bidirectional communication using I2C

Why not SPI, it already has bidirectional data path?
One extra wiring line can make SPI asynchronous.
As I understand, the whole point of I2C was to use minimal wiring configuration (2 wires)?
As you point out, pyboard has terrible I2C and Uart interrupt and callback implementation.
:?