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Bit-banding: When should it be used?
The SAMG55 (and other Cortex M3/4) processors have a bit-band region in the lower 1MB of the SRAM and peripheral regions.  For this chip, that means that the entire SRAM and...
Wednesday, 19 February 2020 - 17:14
Issue with adding existing items located in symlink directory
A portion of my solution is in a directory that is actually a symlink.  If I copy a source file to that directory then try to add it to the solution by right clicking in...
Monday, 23 December 2019 - 17:03
Renaming a project and path
I copied a solution to make a new project, but then wanted to change the name.  That's easy enough - just edit the solution name and the project name from the solution...
Wednesday, 23 October 2019 - 16:51
Sharing Portions of Codebase
I have a project written for a specific custom board, but a large portion of it is something I'd like to share with a project for another custom board.  Let's call the shared...
Wednesday, 16 October 2019 - 19:46
SPI DMA
Processor is a SAMG55 I've successfully implemented a SPI Master DMA routine, and am now trying to make it a bit more versatile.  As currently written, a buffer must be...
Tuesday, 30 April 2019 - 22:36
The Atmel Start SPI driver is terrible and you should be ashamed
This isn't so much a question as it is a cautionary tale for others considering using Atmel Start/ASF4.   I'm in the midst of a big overhaul of the provided SPI driver, and...
Wednesday, 24 April 2019 - 14:25
ASF4/Atmel Start Updates
Does the ASF4/Atmel Start source automatically update, or is this a manual process? With ASF3, you manually selected which version of ASF is used in your project.  With ASF4...
Monday, 22 April 2019 - 14:23
Reading back clock speeds
What is the function for getting the system and peripheral clock speeds in ASF4?     In ASF3, they were sysclk_get_main_hz() and sysclk_get_peripheral_hz(),...
Tuesday, 9 April 2019 - 17:32
ASF4 TWI Master RTOS Driver Issue
I've been working on this bug for a few days now, and it seems that the root cause is likely how the ASF4 RTOS TWI Driver (doesn't) handle things.   In order to do a read...
Saturday, 30 March 2019 - 01:22
[ASF4] Minor config changes (claim to) update many files
Why do fairly trivial changes to an Atmel Start project result in such a large number of updated files on the Project Summary page?  How do I tell which ones have actually...
Wednesday, 6 March 2019 - 14:39
SPI Mode CPHA Reversal
Chasing down an ADC issue has sent me into a SPI rabbit hole, and my current status is that the Clock Phase seems to do the opposite of what it should be doing.  My Setup:...
Thursday, 29 November 2018 - 22:44
Programmed Board Won't Work Until After a Debug Session
I have a bit of a head scratcher here.  I'm using a SAMG55 on a custom board and programming it with an Atmel-ICE programmer.  The board will program and verify fine,...
Tuesday, 25 September 2018 - 03:10

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