Search found 10 matches

by uCTRL
Thu Feb 07, 2019 8:37 am
Forum: The MicroPython pyboard
Topic: Pyboard D reviews
Replies: 8
Views: 933

Re: Pyboard D reviews

Where is the official presentation and documentation for Pyboard D?
by uCTRL
Thu Jan 03, 2019 12:08 pm
Forum: General Discussion and Questions
Topic: Pyboard D - demo
Replies: 3
Views: 477

Re: Pyboard D - demo

What is the cost and market for pyboard D?

Is small linux SOC (plenty available, pi zero, onion omega, linkit smart, plenty of pi clones) running at >500Mhz speed and able to run full Python 2 and 3 at very low cost ($5 to <$15) an alternative?
by uCTRL
Fri Dec 21, 2018 9:59 am
Forum: Programs, Libraries and Tools
Topic: Pycopy, "Advanced MicroPython fork" by pfalcon
Replies: 10
Views: 718

Re: Pycopy, "Advanced MicroPython fork" by pfalcon

Micropython sounded promising at one stage.
Now with so many "fragmented" (no pun intended) ports, it looks more like a train-wreck.

At least pfalcon has admitted some sad truths about state of micropython affairs, while Damian has been doing ?????
by uCTRL
Tue Dec 11, 2018 3:23 am
Forum: ESP32 boards
Topic: ESP32 and LoRa
Replies: 65
Views: 11351

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: 141

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: 241

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: 241

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: 580

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: 211

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: 323

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.
:?