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ATUC256L4U: GPIO erroneously detecting
Hello.   I have a 1k resistor wired directly between PA18 and Ground on some newer PCBs. I am using it as hardware detection of the PCB version in the following way...
Friday, 3 December 2021 - 14:16
Problem ssh:ing into a Linux machine
Hello,   I have a device running a Linux system that I am having issues SSHing into. It keeps refusing all of my attempts. I can connect to the device through a serial cable...
Tuesday, 23 November 2021 - 11:00
What does capacitance/voltage mean on this circuit?
Hi there,   I'm designing a circuit to test a device and I ran into something that I haven't seen before - some of the capacitance values are divided by a voltage as shown...
Thursday, 21 October 2021 - 09:56
Bootloader issues with ATUC256L4U
Hello,   I'm attempting to upload a program for the MCU and a bootloader to my ATUC256L4U in a production environment. In production they are using a windows .cmd file...
Tuesday, 5 October 2021 - 13:30
How to compile a hex-file for User Page data (ATUC256L4U)
Hi,   I'm storing some data in the user page section of the memory that is programmed at production. This data never changes once the unit leaves production, however,...
Tuesday, 28 September 2021 - 12:34
Issues with editing buffer to be sent over SPI/DMA SAML21 (coding mistake?)
I managed to get DMA working together with SPI by using the ASF quick start guide:   https://asf.microchip.com/docs/l...   I am able to initialize the buffer that is to...
Friday, 6 August 2021 - 14:59
Help me interpret this data sheet for an ILI9341 LCD
Hi there,   Sorry if this is not in the correct forum, I wasn't quite sure where to put it.    Basically I'm running into an issue where my LCD screen is loading...
Friday, 30 July 2021 - 14:28
A few generic questions regarding DMA from flash memory to LCD on ATSAML21e18b
Hello,   This is my inspiration (https://www.youtube.com/watch?v=...)   I am reading the data sheet regarding getting DMA working and trying to wrap my head around...
Wednesday, 28 July 2021 - 12:42
Oscilloscope is flatlining - need help setting it up
Hi,   I'm trying to debug some SPI signals with my oscilloscope but I seem to be unable to set things up right. I have an ATUC256L4U, the SPI is sending data, however, I can'...
Tuesday, 29 June 2021 - 10:01
Python serial write to SAMD21 - serial breaks after one buffer sent
Hi,   I'm trying to send some serial data from python to my MCU. It turns out that it is able to send the 1st buffer perfectly, however trying to send additional buffers does...
Monday, 21 June 2021 - 14:16
Serial output from python to SAML21 yields garbage data
Hi there,   Yes this is an issue with serial :). I'm trying to send some bytes to a USART buffer that will be stored on an external flash.   I have verified that my...
Thursday, 17 June 2021 - 18:09
USART stopped working after increasing CPU clock speed
Hi,   I changed my CPU clock speed on my ATSAML21e18b from 4MHz to 48 MHz but the UART seems to have stopped working.   I initialize my UART as void UART_init(void...
Thursday, 3 June 2021 - 10:21

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