CCube_Firmware

Requirements

1. ARM GCC cross-compiler, debugger and various packages

    sudo apt-get install --no-install-recommends --yes \
            build-essential \
            intltool \
            git \
            ca-certificates \
            automake \
            gcc \
            make \
            cmake \
            binutils \
            libc6-dev \
            gcc-arm-none-eabi \
            gdb-arm-none-eabi \
            libnewlib-arm-none-eabi \
            binutils-arm-linux-gnueabi \
            autoconf \
            pkg-config \
            libusb-1.0.0-dev \
            wget

2. st-link utility

Project can be found here: https://github.com/texane/stlink

Here is a list of commands which should download and compile st-link:

git clone https://github.com/texane/stlink.git
cd stlink
mkdir build && cd build
cmake -DCMAKE_BUILD_TYPE=Debug ..
make

3. (Optional) STCubeMX to edit the project configuration

http://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-configurators-and-code-generators/stm32cubemx.html

Build'n Run firmware

Create a build folder if you still don't have it in your project tree, set the stlink path in your makefile then just :

• make : to compile and link your hex file
• make burn : to flash the target board
• make gdb : to debug your program after launching the st-utils utility in another shell

Notes on using ST's usb cdc stack

Here is some tips to get up and running with cdc communication with a pc :

• Get a serial terminal like gtktermon your pc
• have a look at the usb/user/usbd_cdc_if.h and usb/user/usbd_cdc_if.c files, they containt the two main functions you will have to use :
  • CDC_Receive_FS this is the function that get called back after receiving a packet from the pc, you should change its content to suit your application needs
  • CDC_Transmit_FS this is the function to call when you want to send out something to the pc these are basically wrappers around the combo :

USBD_CDC_SetTxBuffer(hUsbDevice_0, &buff_TX[0], *Len); // set packet to transmit
USBD_CDC_TransmitPacket(hUsbDevice_0); // transmit packet

and for receiving :

USBD_CDC_SetRxBuffer(hUsbDevice_0, &buff_RX[0]); // set receive buffer location
USBD_CDC_ReceivePacket(hUsbDevice_0); // receive packet

• Then connect the board to the pc and check if everything is ok with the dmesg and lsusb commands
• Launch gtkterm (with sudo if you aren't in the dialout group)
• In Configuration/Port select the board's port (typically ttyACM0 or ttyUSB0)
• Optionnally you can play around with the local echo and CR LF auto options in the Configuration menu
• You can send bytes by typing on your keyboard or send directly hexadecimal data with the View/Send hexadecimal data option