Search found 653 matches

by OutoftheBOTS_
Mon Dec 11, 2017 7:42 pm
Forum: General Discussion and Questions
Topic: SPI start stop latency
Replies: 7
Views: 1506

Re: SPI start stop latency

I seem to get more like 22kb free but I am also using webrepl

Thanks for that I haven't yet played with frozen byte codes or read the docs about it but it is on my list.

I will google frozen byte code and learn how to use it. I amuse that I will need a Linux machine for compiling.
by OutoftheBOTS_
Sun Dec 10, 2017 8:38 am
Forum: General Discussion and Questions
Topic: SPI start stop latency
Replies: 7
Views: 1506

Re: SPI start stop latency

Thanks for your response. Yes there is definitely the law of demising returns. I certainly find that chunks as big as 1kb are far far far faster than doing 1kb as 1000 bytes. Once I get too much above 1kb you notice it is slightly faster but not heaps (diminishing returns). The Python language provi...
by OutoftheBOTS_
Wed Dec 06, 2017 9:20 pm
Forum: General Discussion and Questions
Topic: SPI start stop latency
Replies: 7
Views: 1506

Re: SPI start stop latency

Thanks for your response. Micro-Python hspi.write(data) can only take byte array as a parameter, is it needed that Micro-Python converts all the values it needs from Python types to C types? This leads on to 2 more questions. Q1. Python is a higher level language with more checks than C. Is it possi...
by OutoftheBOTS_
Wed Dec 06, 2017 2:32 pm
Forum: Drivers for External Components
Topic: ILI9340/ILI9341 TFT Display
Replies: 35
Views: 15468

Re: ILI9340/ILI9341 TFT Display

I have added the scale-able text placer and remover to the master branch. You can choose the foreground and background colour of the text as well as the scale size. There is also a text remover so when you place text ontop of a back ground image you can remove the text and restore the backgound imag...
by OutoftheBOTS_
Wed Dec 06, 2017 1:58 pm
Forum: Drivers for External Components
Topic: mpy-IMU / fusion with FXAS/FXOS chips
Replies: 11
Views: 2342

Re: mpy-IMU / fusion with FXAS/FXOS chips

This is what I have seen guys mounting them on poles sticking up from their robot to minimize the problem.
by OutoftheBOTS_
Wed Dec 06, 2017 10:25 am
Forum: Drivers for External Components
Topic: ILI9340/ILI9341 TFT Display
Replies: 35
Views: 15468

Re: ILI9340/ILI9341 TFT Display

I have added the basic scale-able text putter to a branch of the github. Same as the image putter it is juts at beginning stage and still has lots of development still to do.

scale-able text putter here https://github.com/OutOfTheBots/ili9341 ... /README.md
by OutoftheBOTS_
Wed Dec 06, 2017 8:14 am
Forum: Drivers for External Components
Topic: ILI9340/ILI9341 TFT Display
Replies: 35
Views: 15468

Re: ILI9340/ILI9341 TFT Display

After finally getting my computer working again I did a bit more work on the scale-able text putter. I now have a full character set of 94 symbols from ASCII table 32 to 126 see the demo https://youtu.be/FBLlRWRZsyc Today when I made by own font on my windows PC to save on the ESP board I saved it t...
by OutoftheBOTS_
Wed Dec 06, 2017 12:31 am
Forum: General Discussion and Questions
Topic: SPI start stop latency
Replies: 7
Views: 1506

SPI start stop latency

I search and couldn't find anything on this topic. I am writing a library for a SPI screen and this involves busing larger amounts of data via SPI to the screen. I have noticed if I have a large amount of data and I send it in 1 large chunck it goes very fast but if I send the same amount of data in...
by OutoftheBOTS_
Tue Dec 05, 2017 11:50 am
Forum: Drivers for External Components
Topic: ILI9340/ILI9341 TFT Display
Replies: 35
Views: 15468

Re: ILI9340/ILI9341 TFT Display

I also got my scalable text working much better today. Loads much faster with using less resources :)
see https://youtu.be/5fmE3UUa7vQ
by OutoftheBOTS_
Tue Dec 05, 2017 11:35 am
Forum: Drivers for External Components
Topic: ILI9340/ILI9341 TFT Display
Replies: 35
Views: 15468

Re: ILI9340/ILI9341 TFT Display

I have tidy up my ili9341 image loader and uploaded to github to share. see https://github.com/OutOfTheBots/ili9341-tft/tree/master

I welcome feedback and bugs reports for the purpose of improvement :)