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Write LCD 16*2 4bit interface with Mplab and

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baby_1

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Hello
i wrote a function that send a byte to 4bits output high-nibble & low-nibble (micro PIC18f452).
i have some question about it

https://www.bipom.com/documents/appnotes/LCD%20Interfacing%20using%20HD44780%20Hitachi%20chipset%20compatible%20LCD.pdf

1-if we have a command (for example 128 decimal) i send it to my function the function should set
128=10000000(Binary)

for example High-nibble(1000)

D4=1
D5=0
D6=0
D7=0

or

D4=0
D5=0
D6=0
D7=1

2-in the pdf file that i attached
Write 0x03 to LCD and wait 5 msecs for the instruction to complete
Click to expand...

it is a nibble or byte(0x03)?
 

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