Well, I’ve always used Assembly code (and told this guys to xD) because it lets us have a total control on the peripherals in the PIC, and I personally don’t “trust” C compilers because I don’t know the code that’s being written in the PIC.

For example, enabling an Analog-to-Digital converter. If the register to enable it is in bank 0 and you know you are already in bank 0, you won’t modify STATUS register to switch to it. Maybe the function that enables it in a C compiler adds those 2 lines to switch registers. That’s an example of my distrust. I don’t know if those lines are really added as I have not compiled any C code into Assembly yet.

I may someday take a look at some C compilers, but I’ll stay in Assembly by now, it’s comfortable xD

Yeah well, using C could have made some parts easier… but isn’t assembly beautiful? I mean, it makes you feel so powerful and… you get this… minimalistic pleasure.. xDD

Every clock cycle matters, my friend.

I have tested the simulator and it is awesome!!

Besides it is also cool to write pic assembler but… Wouldn’t be better to use a pic c compiler? xD Nonetheless that is a good point for learning.

I am expecting your next post!! ;-)

I’m waiting your next post. ;-)

I’ll give you some information about BSF and BCF:

BSF f,b (Bit Set f, sets the bit ‘b’ in register ‘f’)
BCF f,b (Bit Clear f, clears the bit ‘b’ in register ‘f’)

The STATUS register has two bits (RP1, RP0) that select which bank we can access:
RP1-RP0->Bank
0 0 -> 0
0 1 -> 1
1 0 -> 2
1 1 -> 3

In that code example you pasted, each block of two lines is setting the bank to 0, then 1, then 2. Finally, it’s set back to bank 0.

Hope that makes it clearer. =)

What does exactly instructions BSF and BCF?
I see that it is for selecting banks, do not? but I haven’t found any logic in how you use them.

BCF STATUS,RP0
BCF STATUS,RP1
; first block
BSF STATUS,RP0
BCF STATUS,RP1
;second block
BSF STATUS,RP1
BCF STATUS,RP0
;third block
BCF STATUS,RP0
BCF STATUS,RP1

Regards.