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When do you think that interrupts become very important
I've done similar things, when the MCU must do many things on a regular basis, including several possible paths through the code, and EVERYTHING (everything useful, anyhow) is in...
Thursday, 16 April 2020 - 09:01
When do you think that interrupts become very important
If it is important that your code flow smoothly forwards with consistent execution time, don't use interrupts (or turn them off).  If it is important that at some point your...
Thursday, 16 April 2020 - 08:32
Trouble Writing to Parallel SRAM
The ceramic caps will do, and the new layout is MUCH cleaner than the old one.  I like that you left one electrolytic in there - but I'd have left it in the other corner,...
Tuesday, 14 April 2020 - 10:39
Trouble Writing to Parallel SRAM
It may have been misinterpreted that lots of little electrolytics (22uF or so) are better than a few big ones.  And that's true, to some extent (they are better, for several...
Tuesday, 14 April 2020 - 02:30
Trouble Writing to Parallel SRAM
Technically, wasn't me, that was Jim (ki0bk), but yes, the idea is firm.    Lots of little 0.1uF caps right around the chips, up close and personal (on big AVRs, I've...
Tuesday, 14 April 2020 - 02:16
Trouble Writing to Parallel SRAM
ki0bk wrote: Electrolytic caps make poor bypass caps!  Use 100nf!!! Jim   This is correct, and I should have explained myself more clearly.  Lots of little 100nF...
Monday, 13 April 2020 - 19:46
Trouble Writing to Parallel SRAM
Kartman wrote: If your 100nF bypass capacitors have long enough legs, place them across the ic.    I'd like to see a lot more capacitors myself.  Better lots of...
Monday, 13 April 2020 - 07:52
copy a port into a variabele
Yeah, that code was all screwed up.  Should have been OR not AND.  Whatever I was smoking when I wrote that I should go get some more...  S.
Friday, 10 April 2020 - 21:16
copy a port into a variabele
clawson wrote: Scroungre wrote:   in r16, PORTC ; Get the first bit I'm rather guessing that was meant to be: in r16, PINC ; Get the first bitBTW unless...
Thursday, 9 April 2020 - 17:31
copy a port into a variabele
I'm with AbDoO_ on this one.   The reason why he (she?) can't receive them all simultaneously is because he can't fire them all simultaneously, because each sensor will...
Thursday, 9 April 2020 - 05:44
Programming One AVR with Another
Brian Fairchild wrote: 1) Write a bootloader which looks on the 6-pin ISP connectors for an EEPROM and loads flash from that if present. The EEPROM will be I2C. Why? Because...
Thursday, 9 April 2020 - 02:38
Pin header/socket placement for board to board connectors--how close to card edge to place?
gchapman wrote: ETA 9-Jul'20 AX01 & AX03 Floating Board-to-Board Connectors - JAE | Mouser edit : floating B2B https://www.mouser.com/Connectors/Board-to-Board-Mezzanine-...
Monday, 6 April 2020 - 17:05

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