Proposed Architecture Lets Arduino UNO R4 WiFi Run Apps Larger Than Its 256 KB Flash

·98 views

A new modular firmware architecture aims to overcome the 256 KB internal Flash limit of the Arduino UNO R4 WiFi's Renesas RA4M1 microcontroller. The design splits a large application into independent firmware modules stored on an external non-volatile storage device, with only the currently needed module loaded into the MCU's executable Flash at any given time. The approach resembles historical concepts like overlays and loadable modules, adapted specifically for embedded microcontrollers. It is best suited for sequential applications, automation systems, robotics, and menu-driven devices, but is not ideal for workloads requiring all components to be simultaneously resident with very low latency. The architecture uses SPI to connect the external storage to the RA4M1, which also shares the board with an ESP32-S3 co-processor handling Wi-Fi and Bluetooth.

Read the full story at DEV Community

This is an AI-generated summary. ShortSingh links to the original source for the complete article.

Discussion (0)

Anthropic Introduces Claude Meetings Feature

Anthropic has published a resource page describing a product called Claude Meetings. The article is hosted on the company's Claude website and was shared on Hacker News. The post has received 15 points and 4 comments from the community. The source material provides only a brief overview, so the specific capabilities and availability of the feature are not detailed here.

0 comments Read more at Hacker News

ProgrammingHacker News ·

Home Assistant Security Flaw Exposes Token Secrets in Cleartext

A security disclosure posted to the Full Disclosure mailing list reports that Home Assistant stores token secrets in cleartext. The finding is framed around the claim that a user's password is not the only key protecting access. The source is a brief Hacker News item linking to the mailing list post, with no comments yet. The available material does not detail the affected versions, exploitation conditions, or whether a fix has been released.

0 comments Read more at Hacker News

ProgrammingHacker News ·

National Weather Service reports nationwide radar website outage during FAA stop

The National Weather Service has reported an outage affecting its radar websites across the country. The disruption reportedly coincided with a stop ordered by the Federal Aviation Administration. The source material provides only limited detail, so the cause and duration of the outage are not confirmed here. Further information on the impact to forecasting and public access is not included in the available report.

0 comments Read more at Hacker News

ProgrammingHacker News ·

Live airband feed from KORS airport in Victoria, Canada, with ground stop reported

A live airband radio feed covering all frequencies from the KORS airport has been made available online. The stream was shared on Hacker News, where it gained attention from readers. The associated headline also notes that Victoria, Canada is under a ground stop. The source material provides few further details about the reason for the ground stop or its expected duration. The information is drawn from a brief Hacker News post linking to the orcasairband.com site.

0 comments Read more at Hacker News