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LCD shield P8 "SPI commands"?

Posted: Fri Dec 21, 2018 5:54 pm
by kwiley
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.

Re: LCD shield P8 "SPI commands"?

Posted: Sat Dec 22, 2018 6:42 pm
by iabdalkader
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.