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Here it is the schematic:
Each of those two buttons, when pressed, will make the Master send a different message via SPI to the Slave PIC. The Slave PIC will then show the message in the display.

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Hi everybody,

I was simulating something in Proteus and it worked perfectly. But when I was going to test it for real it didn't work very well: there is a 4MHz crystal in the OSC1 and OSC2 pins but ...

Thanks man, this has fixed the problem.

But I also tried something that worked: configuring the portb directions after the enable_interrupts.

I am having a problem with interrupts: when I enable INT_EXT, it imediatly goes to the interrupt routine, no matter what border it was configured. I am simulating this in proteus so there is no bounci ...

Hi dima, this code is actually using PIC's SPI hardware, isn't it?

In the "PIC16F88 SLAVE SPI DEVICE CODE" you used a variable called F88_CS, what variable is that? I understand it is the ...