This post is the second in a RISC-V Bytes subseries on the PINE64 Pinecil soldering iron and development board. Previous and subsequent posts can be found under the RISC-V Bytes category.
In the most recent Pinecil post, we walked through how to solder the header pins on the Pinecil breakout board. With the headers attached, we can now communicate with the Pinecil’s microcontroller via a number of protocols. Today we are going to focus on accessing the Universal Asynchronous Receiver / Transmitter (UART) hardware in order to receive serial data from the microcontroller, such as log messages, on a development machine (e.