#avr Logs

Jul 06 2020

06:48 AM skz81: <rue_mohr> markasoftware, actually, gcc puts in a default handler that just returns >> I would have it reboots
06:54 AM skz81: have bet*
06:54 AM skz81: haha :)
08:32 AM strata_ is now known as strata
05:25 PM Strogg: 'lo 'lo
05:27 PM Strogg: I used to use attinys a long time ago, back in the days of the attiny13s.. I'm trying to get an attiny414 going.. using the pyupdi programming interface.. having a bit of troubles. Do I need a pullup on my reset line?
05:28 PM Strogg: I'm powering the chip with 3.3V.. datasheet says that should be ok
05:32 PM LeoNerd: Probably not, but depends on your programming hardware
05:32 PM LeoNerd: How are you driving it?
05:41 PM Strogg: it's basically a USB-serial cable with a resistor between the RX and TX lines
05:41 PM Strogg: https://github.com/mraardvark/pyupdi
05:41 PM Strogg: I've gotten it to work about half a year ago, but I can't remember what I did
05:41 PM LeoNerd: That should be sufficient. That's the structure I use for all the UPDI programmers I sell
05:42 PM LeoNerd: 3.3V CP2102 or 2105 chip, with 4k7 resistor from TX onto RX/UPDI
05:43 PM Strogg: do I need anything else on the MCU, aside from 3.3V on the VCC and a 100nF from VCC to ground?
05:44 PM Strogg: I've got some stuff connected to pins, but nothing crazy.. just a couple LEDS and an i2c bus
05:46 PM LeoNerd: nope, should be fine
06:21 PM Strogg: I'm guessing it's my usb-serial cable.. I'll have to see if I can dig up another one somewhere
06:21 PM LeoNerd: Any one should be fine
06:22 PM LeoNerd: Or if you intend to do a lot of it, consider buying one of my programmers :)
11:33 PM day_ is now known as day
11:46 PM rue_mohr: ok, I need to know I'm not crazy
11:46 PM rue_mohr: open up an atmega88 datasheet
11:46 PM rue_mohr: go to the pinout
11:46 PM rue_mohr: there is a pin for T0, and a pin for T1
11:46 PM rue_mohr: but no pin for T2
11:46 PM rue_mohr: but the section for timer2 says it can be externally clocked
11:47 PM rue_mohr: so... where is T2?
11:48 PM rue_mohr: TOSC?