Joining 5 bit variables and splitting them into 8 bit ones later?

[CuriousOne]

Oh, and by the way, is there any possibility to increase SPI speed? I'm running 16F886 @ 8mhz, and update rate is clearly not good - forget about scrolling letters and other stuff like that.

[richard]

Oh, and by the way, is there any possibility to increase SPI speed? I'm running 16F886 @ 8mhz, and update rate is clearly not good - forget about scrolling letters and other stuff like that.

yes don't use shiftout, on a chip that has a mssp module it's an order of magnitude or two slower than spi
its like having a dog and barking yourself

Well, I already have buffer, but 32x1 pixels in size, because the data is sent to display line by line.

yet characters persist over 8 lines and you are ignoring that present data, furthermore there is no way to recover that data from the chip
you figure it out

[richard]

after some thought ,

Well, I already have buffer, but 32x1 pixels in size, because the data is sent to display line by line.
But the problem is different, I can't understand why this works only per 8 bit: SCREEN32[Y+8]=CHAR2.0(Y) - if I enter any other number instead of 8, which is not multiple of 8, say 5 or 17, everything becomes garbled, while it should not. So, maybe I'm writing in array incorrectly?

i assume SCREEN32 is your 32 bit array ,
SCREEN32[Y+8] is then a complete nonsense as the only valid locations are 0 to 3

similarly wtf is char2 ? if its a byte then
CHAR2.0(Y) a valid y value can only be 0 to 7

then we have this, wtf is char1 a byte a word an array ? , a pointless snippet

char1=char1 | char2>>5
char2=char2 <<3 | char3>>2
char2=char2 | char4>>7
char3=char4<<1char4=0

[CuriousOne]

Yes, SCREEN32 is 32 bit array.
And why locations only can be from 0 to 3 ?
There are 32 bits, or what you want to say, that is not possible to write into specific bit of bit array?

I'm reading a bit from variable and writing it into bit of an array, to later read bits as needed.

[richard]

thats what happens with snippets ,there is no context

SCREEN32 var bit[32] would have made it clear

I'm reading a bit from variable and writing it into bit of an array, to later read bits as needed.

good luck

[richard]

proof of concept
btw i like your font it looks better than my 6x5 one

sorry for shaky vid , was trying to use mouse while steering phone , failed both accounts

[CuriousOne]

Well, I'm designing fonts for last 30 years, so no surprise mine is better
proof of concept of what?
Any code was posted?