STM32F103C8 tutorial by Cichy

Arduino

There is an STM32 project for Arduino. Follow the installation instructions from the project wiki.

Forth

Flashing with a serial connection

First you need to flash forth. You can use a USB-UART dongle. Download stm32loader. Before use, install: sudo pip install pyserial.

Set BOOT0 jumper to 1.

Connect:

STM32   PA9  --- RX   UART-USB
        PA10 --- TX

Get the flash file from mecrisp-stellaris.

• mecrisp-stellaris-2.3.9b/stm32f103-ra/*.bin includes register allocator optimizations
• mecrisp-stellaris-2.3.9b/stm32f103/*.bin is smaller, but without optimizations.

./stm32loader.py -p /dev/ttyUSB0 -e -v -w mecrisp-stellaris-stm32f103.bin

Connecting

picocom can do the job:

picocom -b 115200 --imap lfcrlf /dev/ttyUSB0

But folie is more comfortable. You can get it from the GitHub releases page.

Installing USB on the microcontroller

A lot of Forth code can be found in this repository.

See here for a list of directories.

Most important now is suf which will allow programming the microcontroller without USB-UART connector.

• run folie
• !cd ..../explore/1608-forth/suf
• !s f-common.fs

Now you should be able to connect to the microcontroller directly with USB.

Removing unwanted code

With f-common.fs comes a lot of code thay may not be necessary, e.g. the display driver and fonts. These can be removed. Read the article about cornerstones.