#avr Logs

Jun 24 2019

12:07 AM day__ is now known as day
01:23 AM aidos_ is now known as aidos
01:30 AM jadew`` is now known as jadew
08:59 AM janco_ is now known as janco
10:11 AM gsi__ is now known as gsi_
03:49 PM Kliment: Just found out why my 416/816 are randomly dying
03:49 PM Kliment: Power supply ripple
03:49 PM LeoNerd: Oooh you playing with the new AVR 1-series chips?
03:50 PM LeoNerd: I've been poking those.. I have some 1616s coming soon to make a new breakout board for
03:50 PM Kliment: LeoNerd: Yes - I asked you for help with them recently
03:50 PM LeoNerd: Ohright, I probably recall.. I see a lot of names so I don't always remember
03:50 PM LeoNerd: But yes I recall chatting now you mention.. the I²C stuff
03:50 PM Kliment: LeoNerd: no worries
03:51 PM Kliment: Yep
03:51 PM Kliment: I got that working just fine
03:52 PM Kliment: Well, almost
03:52 PM Kliment: I always have to read one more byte than I want or it gets stuck in a weird state
03:52 PM LeoNerd: Mmm, might be ACK/NACK-related
03:53 PM Kliment: yeah but strange that it would lock up the entire chip
03:54 PM Kliment: Anyway that's an easy workaround
03:54 PM Kliment: But this ripple problem is tough
03:55 PM Kliment: I don't really have enough PCB real estate to solve it the usual way (moar caps)
03:56 PM polprog: you can dead bug a ceramic one right on the power pins
03:56 PM polprog: assuming dip
03:56 PM Kliment: Uhm
03:56 PM LeoNerd: I usually put a 10µ on a board and a 100n per chip
03:57 PM Kliment: this is a 3x3mm part on a 9x22mm PCB
03:57 PM Kliment: I have a 10µF on there already, on the output, and 4.7µF on the input (it's a small switcher)
03:57 PM Kliment: Current draw is negligible, couple of mA
03:58 PM Kliment: 15 or so at most
04:17 PM Kliment: Okay I think something is wrong with my dcdc - the part has been discontinued and the ripple waveforms I'm seeing look nothing like I expect based on ds
07:55 PM Thrashbarg_ is now known as Thrashbarg
11:00 PM Boohbah: Hi, I #include <avr/io.h> but I get an error: 'TIFR' undeclared. I thought it was defined in that header file.
11:01 PM polprog: Boohbah: do you pass -mmcu= ?
11:02 PM Boohbah: polprog: Yes, -mmcu=atmega328p
11:04 PM polprog: might be becasue it doesnt have TIFR :)
11:04 PM polprog: instead, TIFR0, ..1, ..2
11:06 PM Boohbah: polprog: You're right, thank you.
11:52 PM rue_mohr: polprog, you good with git?