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Quorten Blog 1

First blog for all Quorten's blog-like writings

Sure, Linux realtime threads is one way to generate high frequency signals with Raspberry Pi reliably, but what are other methods mentioned out of the Internet? Oh, interesting, ChibiOS/RT is a realtime operating system that runs on Raspberry Pi and also Arduino. One portable operating system to write all your realtime code in.

20200304/DuckDuckGo raspberry pi generate microsecond one shot pulse
20200304/https://raspberrypi.stackexchange.com/questions/19765/rpi-gpio-as-a-high-speed-square-wave-generator
20200304/http://www.stevebate.net/chibios-rpi/GettingStarted.html

How do you build a power-on RESET circuit? The simplest method involves a capacitor and a comparator, but this won’t quite work if your power supply has a ramp-up time that is similar to the capacitor charge time.

20200304/https://en.wikipedia.org/wiki/Power-on_reset

Is there a reliable power-on RESET signal on Raspberry Pi? Well, looks like it could be that pretty much all GPIO pins on Raspberry Pi function as power-on RESET signals, so there you have it.

20200304/DuckDuckGo raspberry pi power on reset
20200304/https://raspberrypi.stackexchange.com/questions/1032/what-is-the-power-on-state-of-the-gpios

UPDATE 2020-10-25: Please see my newer article for corrections about the RESET GPIO pin behavior.

Also, in the process of searching for this, I found that Raspberry Pi also has a built-in watchdog timer. Wow, now that’s very nice.

20200304/https://raspberrypi.stackexchange.com/questions/1401/how-do-i-hard-reset-a-raspberry-pi#1403