by Sjaak | Oct 22, 2019 | arm-cortex, Blog, buspirate, FPGA, stm32 |
10 years ago my friend Ian Lesnet designed the BusPirate. A versatile Swiss army knife that helps you explore serial protocols like SPI, I2C and UART through a simple serial terminal. It was based on a 16 bit Microchip PIC micro controller which features a few clever...
by Sjaak | Nov 6, 2018 | arm-cortex, Blog, forsale, product |
A couple of days ago, I got a notice from Tindie all the SWM050 boards were sold. I also noticed the stock on LCSC of these chips had gone down dramatically. Despite I think the use is limited of the chip, there seems to be a quite interest in it. Many thanks to all...
by Sjaak | Sep 17, 2018 | arm-cortex, Blog, china, forsale |
Searching the prequisite Chinese websites to satisfy my shopping fetish I came across a neat litte ARM Cortex-M0 chip which is a extremely good bang for buck. It is the SWM050 made by Synwit, which, I believe, is the smallest chip available in a reasonable...
by Sjaak | Jun 5, 2018 | arm-cortex, Blog, gd32, STM vs GD32, stm32 |
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...
by Sjaak | Mar 15, 2018 | arm-cortex, Blog, gd32, STM vs GD32, stm32 |
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...
by Sjaak | Feb 6, 2018 | arm-cortex, Blog, gd32, LED, STM vs GD32, stm32 |
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 5×5 development board, soldered it up and started programming. In this first example we not gonna use...
