Search found 55 matches

by fstengel
Wed Mar 20, 2019 4:57 pm
Forum: ESP32 boards
Topic: How to read from a i2c sensor and print on a i2c display when both use different init pins
Replies: 14
Views: 8787

Re: How to read from a i2c sensor and print on a i2c display when both use different init pins

What addresses do you see? The bno055 chip should answer 0x28 or 0x29, and the SSD1306 0x3c or 0x3d
by fstengel
Mon Mar 18, 2019 3:22 pm
Forum: General Discussion and Questions
Topic: How to get CPU load approximate value on Micropython ?
Replies: 3
Views: 2626

Re: How to get CPU load approximate value on Micropython ?

Excluding the UNIX port, I am not quite sure that one can get such a figure. In many cases micropython is running on bare metal without any os, so the "load" would be 100%...
by fstengel
Fri Mar 15, 2019 12:24 pm
Forum: General Discussion and Questions
Topic: Simple web interface for my ESP?
Replies: 1
Views: 2611

Re: Simple web interface for my ESP?

You could use picoweb to implement a very simple web server on your microcontroller.
by fstengel
Tue Mar 12, 2019 3:36 pm
Forum: General Discussion and Questions
Topic: Can I run specify .py file on board via REPL prompt after boot done ?
Replies: 3
Views: 2489

Re: Can I run specify .py file on board via REPL prompt after boot done ?

water wrote:
Tue Mar 12, 2019 3:20 pm
Can I run specify .py file (e.g aaa.py store on Micropython board , not boot.py or main.py .) via REPL prompt after boot done?

Code: Select all

import aaa
shoud do the trick. note: no .py extension, just the file (module) name...
by fstengel
Tue Mar 12, 2019 8:34 am
Forum: General Discussion and Questions
Topic: Something like Threading/Queue in MicroPython?
Replies: 8
Views: 10871

Re: Something like Threading/Queue in MicroPython?

Not as such. However there are alternatives on the ESP32: uasyncio , but that might cause you to completely rewrite your scripts use lightweight threads with the _thread module. It is documented for the lobo port . However, I cannot find documentation for the mainline (apart form the fact that it is...
by fstengel
Mon Mar 11, 2019 10:47 am
Forum: ESP32 boards
Topic: SoftwareSerial or SoftUART for ESP32 [Solved using Machine.UART]
Replies: 9
Views: 18153

Re: SoftwareSerial or SoftUART for ESP32

A question: why do you need a SoftUART class? The esp32 already has 3 UARTS. Usually one (id 0) is used for micropytohn's REPL. The other two can be used and freely assigned to pins that are not in use...
by fstengel
Sun Mar 10, 2019 8:53 am
Forum: General Discussion and Questions
Topic: esp8266 not booting
Replies: 18
Views: 9844

Re: esp8266 not booting

If I understand well: Small text file : OK Large file(s) : not OK I gather you are using a wemos mini with 4M flash, so space should not be a problem. Try this: Create a text (no funny characters, plain ascii 32->126) file of about 25-50k ( this lorem ipsum generator could do the trick) Send it, and...
by fstengel
Sat Mar 09, 2019 4:42 pm
Forum: General Discussion and Questions
Topic: code works on desktop python v3.7.0 but not on micropython v1.9.4
Replies: 4
Views: 2565

Re: code works on desktop python v3.7.0 but not on micropython v1.9.4

It is documented there. I gather it is one of the compromises one has to live with when using micropython.
by fstengel
Sat Mar 09, 2019 3:27 pm
Forum: General Discussion and Questions
Topic: esp8266 not booting
Replies: 18
Views: 9844

Re: esp8266 not booting

Just to be on the safe side, try uploading files to your esp8266 using one of:
by fstengel
Sat Mar 09, 2019 3:18 pm
Forum: General Discussion and Questions
Topic: code works on desktop python v3.7.0 but not on micropython v1.9.4
Replies: 4
Views: 2565

Re: code works on desktop python v3.7.0 but not on micropython v1.9.4

The problem lies with eval: it only works in the global scope. Due to micropython's implementation, the only names it can see are the global ones. See post 4 in this thread