#garfield Logs

May 13 2021

12:37 PM rue_shop1: the stm32 isn't fast enough for the simple lcd
12:44 PM rue_shop1: not for bit-banging
03:34 PM polprog: maybe spi
03:35 PM polprog: oh wait, its paralell
03:35 PM rue_shop1: yea
03:35 PM rue_shop1: need to do 4 bits at a time
03:35 PM polprog: does the display need to be actively clocked?
03:35 PM rue_shop1: yes
03:35 PM polprog: no memory onboard?
03:35 PM rue_shop1: my signals have the phases all wrong
03:35 PM rue_shop1: yes, it latches 1 line
03:36 PM polprog: sounds like fpga time
03:38 PM rue_shop1: I'v done another one with the same signalling on the fpga
03:38 PM rue_shop1: but no ram
03:38 PM rue_shop1: just patterns
03:50 PM polprog: the spartans we have have some ram
04:14 PM rue_shop1: hahah
04:14 PM rue_shop1: after hours of adjusting code
04:14 PM rue_shop1: I had the contrast control voltage wrong
05:20 PM polprog: heh
05:21 PM polprog: i just finished rendering both soundblaster videos
05:26 PM rue_shop1: I liked the pre-covid world, where we didn't HAVE to render our videos
05:28 PM polprog: you just had your friends in your house?
05:28 PM polprog: or just uploaded the raw clips
05:28 PM polprog: ive shot this in a 1 month span, it's totally not in order
05:29 PM polprog: the date on the schematic is 1 jan 2021
05:29 PM polprog: we have may
05:29 PM polprog: talk about lack of time :b
05:35 PM rue_shop1: ?
05:35 PM rue_shop1: raw clips
05:36 PM rue_shop1: covid ruined everything, we have to render our videos now :)
05:49 PM rue_mohr: cant scubadive without a mask...
05:51 PM polprog: :p
05:52 PM polprog: how come can you see anything in that editor of yours
05:52 PM polprog: blue on black is like wtf
05:52 PM polprog: no contrast at all
05:52 PM polprog: blue is the color your eyes are least sensitive to
05:52 PM rue_mohr: its nice
05:52 PM rue_mohr: I like it
05:52 PM rue_mohr: doesn't glare
05:54 PM rue_mohr: so this screen is 480x120
05:54 PM rue_mohr: er
05:54 PM rue_mohr: so this screen is 480x128
05:55 PM rue_mohr: its interesting how the same method used for an fpga makes a cpu crawl
06:03 PM rue_mohr: start to see how video ends up needing to be buffered
06:03 PM rue_mohr: if you wanted to reduce this screeen to a single channel, you would need to buffer 4 pixels at a time min.
06:04 PM rue_mohr: it would be evil on the grounds of it being 4 bit too