Tutorial (8): Creating arrays using lookup tables in PIC microcontrollers

A look-up table is a block of data that is held in the program memory and which can be accessed by the program and used within it.
The table is formed as a subroutine.
Every byte of data in the table is accompanied by a special instruction retlw.
As it implements the subroutine return, it picks up its operand and puts it into the W register.
We use something called ‘computed go to’ using the instruction addwf pcl.
The contents of the W register are added to pcl, which is the lower byte of the program counter.
Once a number has been added to the program counter, program execution jumps forward by whatever that number was

[psychechip]

Nice video. Here are some sugestions to make it even better:

- Present your slides in fullscreen (or use some video-editor to present them for you), so you don't waste time zooming in/out and searching for the right slide
- Prepare your code before your presentaiton, so you can speed it up
- Edit your video removing empty/silent spaces
- Talk louder

Thank you!

[ericjumpelfeaturingjohnnyj]

Excellent tutorial! I do think you might need to add a "goto $" after your "goto Loop" instruction. Otherwise, once the "btfss c1, 3" becomes TRUE, the processor will then try to execute code that is not meant to be executed without a call to it. "goto $" will loop to itself indefinitely after the set number of loops to "Loop".

[seanolsen]

you need to read how to format assembler code properly

[HerGuitarTutor]

Try not playing the piano while making the video, or maybe sing along? Otherwise, not a bad video.