This is tutorial for beginners that shows how to install tools, compile the code with gcc-arm-none-eabi and send it to the STM32 using st-flash. It also introduce basics of automation of this task by putting all instructions into Makefile. A few, complete code examples can be found on GitHub: stm32f401 stm32f072 stm32f042 Updates [28.10.2019] Take … Read more
A pull-up resistor is a resistor connected between a signal conductor (GPIO) and a positive power supply voltage while a pull-down resistor is a resistor connected between a signal conductor and a ground. They are used on inputs to prevent floating lines, rapidly switching between high and low and a middle “undefined” region. Outputs normally do … Read more
Serial peripheral interface (SPI) is a hardware/software communication protocol originally developed by Motorola and widely used by others in the industry. SPI is quite straightforward – it defines how to communicate in easy way between 2 digital devices – i.e. between AVR and devices, like other AVRs, external EEPROMs, DACs, ADCs, etc. SPI is a single-master … Read more