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Firmware for PyBoard D
Posted: Wed Sep 11, 2019 9:46 pm
by neoxharsh
Hello,
I am not able to find the firmware for the PyBoard D on the download page. Can anyone help me with it?
And does the LCD Skin connected to PyBoard D have faster refresh rate?
Cheers
Re: Firmware for PyBoard D
Posted: Thu Sep 12, 2019 7:52 am
by pythoncoder
Something has gone wrong with the download page, I have raised an issue so hopefully it will be fixed soon.
As for the LCD skin subjectively it's similar to the Pyboard 1.x. In practice the refresh rate tends to depend on how you're using it.
Re: Firmware for PyBoard D
Posted: Fri Sep 13, 2019 12:40 am
by neoxharsh
Thanks, I see now the firmware page is updated.
As for the lcd, I wanted to know is refreshing the entire screen fast? can we see the refresh happening?
Re: Firmware for PyBoard D
Posted: Fri Sep 13, 2019 6:16 am
by pythoncoder
The official test running on a Pyboard 1.1 reports 28fps drawing some fairly complex graphics. Actual rates are likely to depend on exactly what you're drawing.
Re: Firmware for PyBoard D
Posted: Fri Sep 13, 2019 10:35 am
by chuckbook
Re: LCD160CR_1.1 screen update
Theoretical limit for full screen updates using SPI fast protocol is 97 Hz.
This requires a 32 MHz SPI clock.
Smaller rectangular areas can be processed even faster.
However, this technique requires a full frame buffer in host MCU RAM.
(Original LCD160CR has a max. SPI clock of 13.5 MHz.)