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
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...
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...
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...
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
Thanks a lot, just tried that, works great!
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...
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...
A sketch from the essential parts of your schematics would be great for understanding.
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...
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...
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. ...
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...
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...
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...
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