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self programming on ATmega4809
Obviously this chapter has been included by mistake. There's no TOUTDIS bit in SYSCFG0 for the ATmega4809. Besides that, I tried to wait for both EEBUSY and FBUSY==0 before the...
Sunday, 12 June 2022 - 22:01
cannot unlock AVR128DA32 with pymcuprog
sorry to follow my own post, I have just found the solution:   $ pymcuprog erase  -t uart -u /dev/ttyUPDI -d avr128da32 --chip-erase-locked-device  
Wednesday, 13 October 2021 - 09:10
setting USERROW with pyupdi on AVR128DA
Thanks a lot, just tried that, works great!
Sunday, 3 October 2021 - 07:57
Which USB <> Serial Bridge Chip?
an important criterion for selecting a device may be the ability to have unique USB serial numbers if multiple devices are in use. On the CP2102 you can program your own serial...
Monday, 5 April 2021 - 00:49
Anyone else having any issues using a CH340 USB to Serial adapter with pyupdi?
good point, I have never paid attention to the leds much. After thinking about it, there are two situations that must be considered: When UPDI acts as an output, it has to drive...
Monday, 29 March 2021 - 22:11
output pin as power source for input pin
A sketch from the essential parts of your schematics would be great for understanding.
Friday, 18 December 2020 - 15:33
ATMega128 ICs seem dead :-(
some time ago I had the problem that atmega324p controllers didn't respond to avrdude. It turned out that the cpus were intact, but they had pre-programmed fuses.   Take a...
Wednesday, 21 October 2020 - 20:40
ATtiny3217 programming and development
mraardvark wrote: Agree with Morten's suggestion to use pyupdi ( https://github.com/mraardvark/pyupdi/ ) I have used this successfully on the raspberry pi as well. Also...
Tuesday, 29 September 2020 - 23:11
Recommend an AVR for this...
meslomp wrote:     Use an N-fet in the negative connection. A P-FEt will have a reverse diode that will make sure it will not work, so there you would need 2.  ...
Friday, 25 September 2020 - 07:41
Recommend an AVR for this...
alank2 wrote: It looks like the tiny804 has very little EEPROM - this leaves me with the tiny84A and tiny841 The tiny804 is from the tinyAVR 0-series. The 0-series has lots of...
Tuesday, 22 September 2020 - 13:26
Strange behaviour of DIRSET on AVR128DA32
echoromeo wrote: This did make me a bit curious, is there a use case where one could benefit from using PORTx.DIRSET/CLR/TGL and VPORTx.DIR (or OUT) back to back? There is no use...
Monday, 21 September 2020 - 18:08
MCU PWM from 5V to 10V
Kartman wrote: Why not use an opto coupler? Avoids any problems with earth loops etc. Why did you choose a mosfet driver? Seems like way overkill for something that only need...
Sunday, 23 August 2020 - 09:53

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