Different processors and instruction set architectures have always fascinated me. As a child of the late 70s and 80s I ...
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Thoughts from a Technology Leader
Category: Hacking
HiFive1 Rev B, Zephyr, and SPIHiFive1 Rev B, Zephyr, and SPI
A few years back I purchased a SiFive HiFive1 Rev B board to join in the RISC-V revolution. In this ...
The Case of the Unruly Chip Select SignalThe Case of the Unruly Chip Select Signal
Troubleshooting digital signals and protocols such as Serial Peripheral Interface (SPI) and Inter-Integrated Circuit (I2C) can be notoriously difficult. The ...
Using a HyperPixel 4.0 TFT Display on a Pi 3Using a HyperPixel 4.0 TFT Display on a Pi 3
You may have noticed that Raspberry Pi 4s are a bit hard to come by these days. The all-knowing Google ...
Using Apple’s New WeatherKit REST APIUsing Apple’s New WeatherKit REST API
In late March 2020 Apple purchased the Dark Sky app, and along with it the Dark Sky API. No longer ...
Yes You Can Run Homebrew on an M1 MacYes You Can Run Homebrew on an M1 Mac
One of the reasons I took the plunge and bought an M1-based Mac is to test out its performance and ...
I2C with the SiFive HiFive1 Rev BI2C with the SiFive HiFive1 Rev B
Hey kids! Today we’re going to take a look at the SiFive HiFive1 Rev B and Freedom Metal I2C API. ...
Exploring HiFive1 Rev B GPIOs with PlatformIOExploring HiFive1 Rev B GPIOs with PlatformIO
In our last post we looked at the GPIO pins of the SiFive HiFive1 Rev B board, and in this ...
HiFive1 Rev B GPIO PinsHiFive1 Rev B GPIO Pins
Let’s make use of the HiFive1 Rev B schematics to map out the GPIO controller device pins. Of particular interest ...
An Introduction to the HiFive1 Rev B and RISC-VAn Introduction to the HiFive1 Rev B and RISC-V
Today I’d like to introduce you to a new development board, the HiFive1 Rev B. Equipped with a RISC-V Freedom ...