Beagle on BeagleBoard-yhteisön kehittämä yhden kortin tietokone, joka on monen kehittäjän suosiossa. Nyt kortteihin ollaan tuomassa uutena version BeagleY-AI, joka sopii tekoälyä hyödyntävien sovellusten kehittämiseen. Uutuuskortteja voi ennakkotilata Farnellilta.

Beagle-korttitietokoneet käyttävät avoimen lähdekoodin ohjelmistoja ja käyttöjärjestelmiä, kuten Linuxia, mikä tekee niistä joustavia kehitysympäristöjä monenlaisiin sovelluksiin. Ne tukevat myös erilaisia ohjelmointikieliä, kuten Pythonia, C:tä ja JavaScriptiä, mikä helpottaa monenlaisten projektien toteuttamista.

Expansion¶

Note

This chapter is a work in progress and will include information on building expansion hardware for BeaglePlay.
mikroBUS¶

The mikroBUS header provides several GPIO pins as well as UART, I2C, SPI, PWM and an Analog Input.

By default, the port is controlled by a mikroBUS driver that helps with auto-detecting MikroE Click Board that feature [ClickID](https://www.mikroe.com/clickid). This does however mean that if you want to manually control the port, you may need to first disable the driver.

To disable the driver, do the following – TODO
Grove¶

The Grove port on BeaglePlay exposes one of the SoC I2C Ports as well as an analog input.

It maps directly in linux as /dev/I2C-TODO or as the following alias /dev/play/grove
QWIIC¶

The QWIIC port on BeaglePlay exposes one of the SoC I2C Ports.

It maps directly in linux as /dev/I2C-2 or as the following alias /dev/play/qwiic
CSI¶

The AM62x SoC (and by extension BeaglePlay) does not feature on-board ISP (Image Signal Processor) hardware, and as such, Raw-Bayer CSI Sensors must be pre-processed into normal images by the A53 cores.

To avoid performance penalties related to the approach above, it is recommended to use a sensor with a built-in ISP, such as the OV5640 which is supported out of box.

The PCam5C from Digilent is one CSI camera that features this sensor.

OLDI¶

BeaglePlay brings out two OLDI (LVDS) channels, each with up to four data lanes and one clock lane to support 21/28-bit serialized RGB pixel data and synchronization transmissions. The first port, OLDI0, consists of OLDI0_A0-3/CLK0 and corresponds to odd pixels, while the second port, OLDI1, consists of OLDI0_A4-7/CLK1 and corresponds to even pixels.

Sequent Microsystems’ Beagle-Pi “Raspberry Pi Emulator” Offers a Stopgap for Shortages
https://www.hackster.io/news/sequent-microsystems-beagle-pi-raspberry-pi-emulator-offers-a-stopgap-for-shortages-eb0c4d48b8d2

Designed to adapt HATs to the BeagleBone Cape format, this low-cost board swaps a hard-to-find part out for one in ready supply.

“This PocketGlitcher is a glitching mod-device. It uses the Texas Instruments PRU [Programmable Real-time Unit] to create deterministic signals (5ns precision, not so bad), associated with determined configs. An analog PCB Cape is then plugged to the PocketBeagle to provide a sufficient glitching effect, once connected to the VDD target. As a result, it is now possible to reactivate the nRF52 debug with a low-cost plug-and-play solution. And the most important, the system fits in a pocket.”