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SPI baudrate #24

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peterhinch opened this issue Dec 16, 2020 · 1 comment
Closed

SPI baudrate #24

peterhinch opened this issue Dec 16, 2020 · 1 comment

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@peterhinch
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In your instructions page your code sets the baudrate to 24MHz. Yet your ILI9341 datasheet P231 section 19.3.4 specifies a minimum clock cycle time of 100ns for write cycles.

I have written a driver to enable my MicroPython nano-gui to work with your ILI9341 displays. I am reluctant to recommend an overclock without some justification. I have a high regard for your company's engineering skills and am sure you wouldn't risk a support nightmare so please could you explain the justification as 10MHz really is rather slow.

FWIW my board works fine at 40MHz...
@ladyada
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ladyada commented Dec 16, 2020

if you are unsure, make the default freq 10mhz and folks could try running it faster. its your code 😁

@ladyada ladyada closed this as completed Dec 16, 2020
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@ladyada @peterhinch