This repo provides a version of the SPI libarary for the Arduio UNO R4, which uses the Renesas RA4M1 processor. In the standard distribution, 16 bit transfers are done as back to back byte transfers, ...

CS pin is optional (Some display breakout board does not have CS pin, input GFX_NOT_DEFINED in this case) Underlaying of this data bus class is Arduino generic SPIClass, so it works for most Arduino ...

Arduino UNO R4では、これまでの8bitのATmega328から、32bitのArm Cortex-M4プロセッサへと、大幅なCPU性能の向上が図られました。ルネサス製RA4M1という日本のメーカーのCPUが採用されたという点でも喜ばしいことです。 今回は、Arduino UNO R4に1.5inch OLEDモジュール(waveshare ...

To prevent data corruption when using multiple SPI devices on the same bus, care must be taken to ensure that they are only accessed from within the main loop, or from the interrupt routine, never ...

Quick, how do you wire up an SPI bus between a microcontroller and a peripheral? SCK goes to SCK, MISO goes to MISO, and MOSI goes to MOSI, right? Yeah. You’ll need to throw in a chip select pin, but ...

株式会社スイッチサイエンス（本社：東京都新宿区、代表取締役：金本茂）は、Arduino が2025年7月24日に発表した新製品「Arduino Nano R4」を販売開始します。 「Arduino Nano R4」は、Arduino社の小型開発基板「Arduino Nano」シリーズの新製品で、「Arduino UNO R4」と同じ ...

Arduino is launching new versions of the Uno board powered by a Renesas 32bit microcontroller. The Uno R4 comes in two versions: the basic Uno R4 Minima and the Espressif-equipped Uno R4 WiFi.

In addition to letting you directly control your SPI devices, SPIDriver shows you what’s happening on the SPI bus in real-time. In addition to letting you directly control your SPI devices, SPIDriver ...

A new fully featured Arduino development board has been created called the Prestissimo Uno+ which is now available to back via Kickstarter with earlybird pledges available from just $20, AUS$28 or ...