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ATmega4808/9 TWI: Address Packet Transmit Complete - Address not Acknowledged by Slave ?
A TWI protocol question, please!   In The megaAVR-0 series Family Data Sheet, 40002015C.pdf, Section 24.3.4.2.2, "Transmitting Address Packets", the case of an address packet...
Wednesday, 19 February 2020 - 17:58
How to make an "optimized-away" variable visible?
Greetings -   Continuing to lean on ATmega4809 Xplained Pro. But, now I have a problem.   I have a function (a TWI function) that  returns a status value. My...
Wednesday, 19 February 2020 - 01:18
Use of TWI on ATmega4809 Xplained Pro?
This is closely related to the recent post Default F_CPU for "ATmega4809 Xplained Pro"?https://www.avrfreaks.net/forum/default-fcpu-atmega4809-xplained-pro But, this is...
Friday, 14 February 2020 - 20:41
Default F_CPU for "ATmega4809 Xplained Pro"?
If this is just a matter of RTFM, then I apologize for not having read every word of the manual, because I have not. But, seems to me that this warrants at least some word in the...
Friday, 14 February 2020 - 17:54
My New Favorite Switching Power Supply IC
LTC3531-3.3 - Mouser Product page is at   https://www.mouser.com/ProductDe...   Attributes:     Buck-boost, 1.8V to 5.5V in, 3.3V out up to 200mA (200mA...
Wednesday, 12 February 2020 - 20:05
Keysight Instrument Giveaway
Keysight, ex-HP:   https://www.wavekeysight.com/en?...   Scopes, RF test gear, power supplies. and much more.    Jim
Tuesday, 4 February 2020 - 22:28
megaAVR-0 TWI IO config?
Presume this also applies to tinyAVR-0/1 ... Two questions:   1) It appears that only TWI0 has alternate IO pins. Is this interpretation correct? In documentation on PORTMUX...
Monday, 3 February 2020 - 19:15
MACRO DEFINITION?
In the following macro statement for tiny-0 & tiny-1 TWI baud rate register value, there is a "\" floating out at the end of the first line. #define TWI0_BAUD(F_SCL, T_RISE...
Wednesday, 29 January 2020 - 22:55
Peter Fleury I2C Library
Greetings   Was just checking on this library. On the GitHub repository, there is a link to his home page. On the home page, which is at http://homepage.hispeed.ch/...
Monday, 27 January 2020 - 20:53
How to get AS7 Device Packs?
Greetings -   This is really frustrating and does NOT bode well...  I am trying to retrieve the device packs pertinent to Mega4808/9 so that I can start on XPlainedPro...
Sunday, 19 January 2020 - 01:17
Business Card Runs Linux!
Via Jack Gannsle's "Embedded Muse" ("The Embedded Muse", Issue Number 389, January 6, 2020)   We have an under-$1.50 ARM9 on a business card running linux. The MCU has 32Meg...
Monday, 6 January 2020 - 17:52
Mixed SPI/Async use?
Greetings -   This query is driven by a starting design using M4808/9 with multiple UARTs, but I think it is actually somewhat more general than that.   I am looking at...
Tuesday, 31 December 2019 - 18:32

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