LCD shield P8 "SPI commands"?

Discussion related to "under the hood" OpenMV topics.
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kwiley
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Joined: Fri Dec 21, 2018 5:22 pm

LCD shield P8 "SPI commands"?

Postby kwiley » Fri Dec 21, 2018 5:54 pm

How is the use of P8 different from P0 with the LCD shield? It is documented as "SPI commands". What sort of commands are issued via P8 as opposed to simply being sent as SPI data over P0 (MOSI)?

Thanks.
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iabdalkader
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Joined: Sun May 24, 2015 3:53 pm

Re: LCD shield P8 "SPI commands"?

Postby iabdalkader » Sat Dec 22, 2018 6:42 pm

kwiley wrote:
Fri Dec 21, 2018 5:54 pm
How is the use of P8 different from P0 with the LCD shield? It is documented as "SPI commands". What sort of commands are issued via P8 as opposed to simply being sent as SPI data over P0 (MOSI)?

Thanks.
It should be "command", this pin is low for command and high for data. It's just how the LCD driver chip works.

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