February 2021
Intermediate to advanced
416 pages
9h 28m
Italian
book
STM32 -- ARM-Microcontroller programmieren für Embedded Systems - Das umfassende Praxisbuch
by Ralf Jesse
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Kapitel 18: Direct Memory Access (DMA)
In herkömmlichen Programmen werden Informationen zwischen verschiedenen Komponenten transferiert. Hierbei spielt es keine Rolle, ob die Daten zwischen mehreren Mikroprozessoren/Mikrocontrollern, zwischen einer CPU und einer internen oder externen Peripheriekomponente oder direkt zwischen den Peripheriekomponenten (dies können auch zwei Speichermodule sein) ausgetauscht werden. Für den Master bedeutet dies einen erheblichen zeitlichen Aufwand, da er die Daten zunächst laden und anschließend prüfen und gegebenenfalls modifizieren und schließlich zum Ziel senden muss. Dieser »Datendreisprung« ist normaler Bestandteil üblicher Software und wird in der Literatur allgemein als Read-Modify-Write bezeichnet.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.