Category Archives: STM32

An STM32F4 Project Template for Crossworks

Posted on May 6, 2013 by Peter Harrison

When developing for the STM32F4, setting up a new project can be a pain. Without some kind of wizard or configuration tool, there are always loads of obscure settings that have to me made each time. The easiest way around … Continue reading →

Posted in ARM, STM32 | Tagged , , , , | 3 Comments

Using USART1 on the STM32F4Discovery

Posted on May 5, 2013 by Peter Harrison

While it was very good of ST to make the fantastically inexpensive and versatile STM32F4Discovery board, they have made things a little difficult in the choice of peripherals in places. Incoming search terms:connect mouse to stm32f4discovery (1)stm32f4 project (1)stm32f4discovery ld7 … Continue reading →

Posted in Hardware, STM32 | Tagged , , , | 3 Comments

Quadrature encoders with the STM32F4

Posted on February 16, 2013 by Peter Harrison

Most commonly, the speed and direction of the motors in a micromouse or other small robot will be read from quadrature encoders connected to the drive train. One of the great things about the STM32F4 processor is that it can … Continue reading →

Posted in Hardware, Micromouse, STM32 | Tagged , | 11 Comments

Open Source STM32 Book

Posted on February 12, 2013 by Peter Harrison

Lucky students at Indiana University might like to enrol on the [C - H]335 Computer Structures course run by Geoffrey Brown. If they do, they will be treated to a great introduction to the STM32 processor. The lab manual for … Continue reading →

Posted in STM32 | 8 Comments

An Improved Bit Banding Approach

Posted on January 13, 2013 by Harjit Singh

The commonly published approach to using the bit banding feature of the Cortex Mx family of processors is to use macros – see Bit Banding in the STM32. This post describes an alternate implementation that uses a dedicated RAM section … Continue reading →

Posted in ARM, Micromouse, Software, STM32 | Tagged , , , | Leave a comment

GCC ARM Embedded Toolset

Posted on January 5, 2013 by Peter Harrison

If you are taking the DIY approach to coding for the ARM processors, you probably use the GCC ARM embedded toolset. This is available from a number of places. I just came across another distribution of this ARM toolset. One … Continue reading →

Posted in ARM, Hardware, STM32 | Tagged , , | Leave a comment

uKOS – A real-time operating system

Posted on January 2, 2013 by Peter Harrison

Edo Franzi is the designer of the famous Khepera Robot. He first developed uKOS, a multi-tasking OS for the 68k processors, as part of that project. uKOS was subsequently re-written in C and is now available, as uKOS-II, for a … Continue reading →

Posted in ARM, Software, STM32 | Tagged , , | Leave a comment

Determine STM32 reset source

Posted on March 29, 2012 by Peter Harrison

When your STM32 processor starts up from a reset, there are a number of possible sources for that reset. You may want to perform different initialisations depending on the exact source of the reset. Incoming search terms:stm32 software reset (16)stm32f4 … Continue reading →

Posted in Hardware, STM32 | 4 Comments

Decimus 4 Begins

Posted on March 22, 2012 by Peter Harrison

It has been more than two years since I promised myself that I would move on and build a new micromouse using the STM32 processor. Finally, I have done something about it. The new mouse is Decimus 4. Incoming search … Continue reading →

Posted in Micromouse, STM32 | 1 Comment

Adding DMA to the SPI driver with the STM32F4

Posted on March 11, 2012 by Peter Harrison

Sending data over SPI with the STM32 using polling is simple and reliable but your processor is blocked, unable to do anything else until the transfer is complete. Direct Memory Access (DMA) allows you to initiate a transfer of a … Continue reading →

Posted in STM32 | Tagged , , | 15 Comments