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Any examples of a parallel gpio port dma transfer for the SAME54?
I'm trying to write to an LCD controller, and I'm not sure where to start with the SAME54. There aren't really examples for DMA the same way there are for ASF3. Anyone got any...
Monday, 24 February 2020 - 20:10
Atmel Start is not the answer: My experience and some feature requests
For context: I use Atmel Start differently than I used ASF3. In ASF3, I would constantly switch modules in and out, change which modes they used (example: delay systick vs cycle...
Saturday, 15 February 2020 - 13:31
delay_ms timing is way off due to SysTick [SAME54_XPLAINED w/ASF4]
So I used an Atmel Start generated project, and I am using the following code to configure and enable systick:         // Configure SysTick to trigger...
Thursday, 13 February 2020 - 05:32
Question About Running at 1.8v vs 3.3v [ATSAMD21J18A/ATSAME54P20A]
I know that for some AVR chips, running at 1.8v vs 3.3v or higher meant sacrificing cpu frequency. I can't find anything about this in the ATSAME54P20A's datasheet or the...
Wednesday, 12 February 2020 - 00:43
ATSAMD21J18A USB Confusion [ASF3]
I am attempting to use USB on my atsamd21j18a. I want to use the USB for two purposes:   - As a serial port com device  - As a data channel for uploading firmware...
Sunday, 23 June 2019 - 23:07
ATSAMD21J18A Issue - SPI returns 0 when running on board, different results when debugging
So I am reading from the MAX31855K IC. I am using SPI to read data from a thermocouple. I am having an issue reading from it, though.   Whenever I read from it I either get 0...
Saturday, 29 December 2018 - 23:02
[SAM D21 XPRO] Is writing over a bootloader while it's being used a possibility?
This is probably a dumb question, but HEAR ME OUT. I'm currently using the SAM D21 XPRO USB Host MSC Bootloader example provided by Atmel (ASF3). I know most people here don't use...
Tuesday, 2 October 2018 - 01:56
XMEGA A1U - Is it possible to create a PCB with an embedded debug USB?
On the A1U eval board, there is a target USB and a debug USB. I was wondering if it was possible to keep this feature (the debug USB) when moving over to a pcb. I've read a bit...
Wednesday, 14 February 2018 - 07:55
I2C on SamD21 trouble
I'm somewhat confused as to how I'm supposed to use Atmel's I2C module. As far as I know, I2C works like this:   1 Start bit -> 7 bits (slave address) -> 1 bit (read/...
Monday, 25 December 2017 - 00:32