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January 11, 2022January 11, 2022 maquefelArticles

Don’t fear the bricking (unbricking Unmatched via JTAG)

First published at: https://forums.sifive.com/t/dont-fear-the-bricking-unbricking-unmatched-via-jtag/5449 Despite, as i think, this is quite obvious, some people miss the point. So let me show you how to unbrick the HiFive Unmatched board, that’s […]

September 10, 2016January 26, 2017 maquefelArticles

Using gpio-generic and irq_chip_generic subsystems for gpio driver

Intoduction This article is a logical continuation of the previous one and it is recommended to stady after reading the previous material. The current note is necessary for understanding the […]

July 14, 2016March 20, 2017 maquefelArticles

QEMU ivshmem Introducing interrupt capable virtual gpio concept

Introduction It’s hard to underestimate the role of GPIO’s, especially in ARM embedded systems. Apart of being a very popular material for starters, GPIO’s provide a way for controlling the […]

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