BlogWhat keeps us busy and awake at night?
This is part 4 in the series where we compare the STM32F103 with its Chinese counterpart the GD32F103. Both are ARM Cortex M3 microcontrollers which are mostly pin, peripheral and register compatible. Now we compare the SPI master peripheral of both chips. SPI is a...read more
Since the GD32F103 can run as fast as 108MHz but has not a proper USB clock divider to provide a 48MHz clock for USB communication we need another way to communicate with the outside world. Since the early days of computing the easiest way to go is a asynchronous...read more
The defacto 'hello world' for microcontrollers is blink a LED at a steady rate. This is exactly what I'm going to do today. I made a small 5x5 development board, soldered it up and started programming. In this first example we not gonna use fancy IRQs or timers to...read more
I locked myself into the basement with a couple of PCBs, chips and fresh flux for a couple of days. For the STM32F103 vs GD32F103 challenge I needed to have two identical boards with a different microcontroller. As far as I could judge both chips are legit and not...read more
Most of us do know the ST line of ARM chips called STM32. They come in multiple flavours and the STM32F103 is one of the most common entry level family of chips. They are called by ST as mainstream. They are a full featured 32 bit ARM Cortex M3 chip running at...read more
During the last days of 2017, we wish everybody around the globe the best for the next year. May your heart be warmed with the glow of your favorite soldering iron or hotair station and may all the 5mm, 1206 or even the 0402 LEDs light the days in this winter. We hope...read more