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en:arm_programming

ARM STM32 processors programming

The best working environment for ARM processors is the Linux OS. That is why the following manual describes the installation process and how to handle the tools for work with ARM in this particular system. Linux installation manual.

All the software that is mentioned in this guide can be obtained for free.

Introduction for beginners

A required HW includes:

A required SW includes:

  • SW for writing the code
  • Compiler
  • Loading of the compiled program

Compiler

You can use a freely available GNU C compiler, obtainable from git repository gcc-arm-embedded.

To help you with the Ubuntu installation it is possible to used a ready-made deb packages. A PPA repository currently works only for Ubuntu version 12.04.

Quick installation using a software repository
sudo add-apt-repository ppa:terry.guo/gcc-arm-embedded
sudo apt-get update
sudo apt-get install gcc-arm-none-eabi
Compilation procedure

Open a terminal and change the directory to the one containing the compilation files. Start the compilation process using the MAKE command.

GUI

Sublime text

Code::Blocks

Code::Blocks

sudo apt-get install codeblocks

Libraries

STM32F10X standard peripheral library

The complete proprietary library from STMicroelectronics, suffering form an uncomfortable programming interface and occupying a lot of space in the final program.

It is available for download at STMicroelectronics web site.

libopencm3

A new open-source library with better interface and smaller size, that in unfortunately yet incomplete (though under an ongoing development).

Web pages of the project

Loading

Bootloader

The use of bootloader is useful in cases when we do not intend to use any additional programming HW and we do not need advanced developmental functions like debugger.

STM32F10xRxT01A module

To activate the bootloader, hold the BOOT key, then press the RESET key and immediately release the BOOT key. It is possible to communicate with the bootloader through USB or UART (using e.g. stm32flash program). For loading the firmware through USB you can use dfu-util, that works for Linux, Mac OS and Windows as well.

Connecting the module

In order to be able to use the bootloader, it in necessary to connect it to the serial link. In the case of using USB232R01B module, it is sufficient to have only RXD and TXD connected in a following way:

USB232R01B STM32F10xRxT01A
TXD PA10
RXD PA9

Professionals can connect other DTR and RTS signals as well, to get rid of an annoying pressing of the keys during every upload :) (This function requires a modified stm32flash).

stm32flash compilation
svn checkout http://stm32flash.googlecode.com/svn/trunk/ stm32flash-read-only
cd stm32flash-read-only
make
sudo make install

An example of use:

sudo stm32flash /dev/ttyUSB0

stm32flash - http://stm32flash.googlecode.com/

Serial Config: 57600 8E1
Version      : 0x20
Option 1     : 0x00
Option 2     : 0x00
Device ID    : 0x0418 (Connectivity line)
RAM          : 64KiB  (4096b reserved by bootloader)
Flash        : 256KiB (sector size: 2x2048)
Option RAM   : 15b
System RAM   : 18KiB

Resetting device... done.

An example of program loading:

$ ./stm32flash -w ./bin/LED_Blink.hex -v -g 0x0 /dev/ttyUSB0 
stm32flash - http://stm32flash.googlecode.com/

Using Parser : Intel HEX
Serial Config: 57600 8E1
Version      : 0x22
Option 1     : 0x00
Option 2     : 0x00
Device ID    : 0x0414 (High-density)
RAM          : 64KiB  (512b reserved by bootloader) 
Flash        : 512KiB (sector size: 2x2048)
Option RAM   : 15b
System RAM   : 2KiB

Wrote and verified address 0x08000c48 (100.00%) Done. 
Starting execution at address 0x08000000... done.

dfu-util

The binaries for this utility can be found here: dfu-util

To activate the bootloader through USB, you have to connect + 3,3 V to the PA9 pin. In order to run the bootloader follow the sequence: press RESET, press BOOT, release RESET, release BOOT.

A batch to call the dfu-util on Windows platform and the compiled version of dfu-until without the need to download other libraries can be found here: dfu-util-static. Furthermore, to run the program on Windows, it is necessary to install some version of uslib. The easiest way to do it is to use zadig. In the course of installation, the processor must be in DFU mode (see the key sequence mentioned above).

You can test the firmware loading, using this sample binary, that creates the USB HID mouse out of the STM32F107 processor. STM32F107_mouse.bin

J-TAG

An external programmer is required to program through JTAG. In the case of STM32F10xRxT01A module, the JTAG wires have a special pin-out (J51). The JTAGFT2232V02A module can be used as an external programmer.

For programing is suitable eg. OpenOCD, an open programm that supports the majority of JTAG programmers and is able to create the back-end for GDB, thus supporting the debugging as well.

Ubuntu

Though there already exist natively supported packages for OpenOCD in Ubuntu, their versions are usually quite old compared to the latest development. It is therefore recommended to compile the current version…

sudo apt-get install libtool git gcc automake libftdi-dev texinfo
git clone git://git.code.sf.net/p/openocd/code openocd-code
cd openocd-code/
./bootstrap
./configure --enable-maintainer-mode --disable-werror --enable-ft2232_libftdi
make
sudo make install

To uninstal the OpenOCD, use the following command

sudo make uninstall

If you have a JTAGFT2232V02A module with uploaded FPGA scheme connected to you computer, you can connect to ARM

sudo openocd -f "interface/busblaster.cfg" -f "target/stm32f1x.cfg"

Open On-Chip Debugger 0.7.0-rc1-dev-00011-gd9ba56c (2013-04-28-11:46)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.sourceforge.net/doc/doxygen/bugs.html
Info : only one transport option; autoselect 'jtag'
adapter speed: 1000 kHz
adapter_nsrst_delay: 100
jtag_ntrst_delay: 100
cortex_m3 reset_config sysresetreq
Info : max TCK change to: 30000 kHz
Info : clock speed 1000 kHz
Info : JTAG tap: stm32f1x.cpu tap/device found: 0x3ba00477 (mfg: 0x23b, part: 0xba00, ver: 0x3)
Info : JTAG tap: stm32f1x.bs tap/device found: 0x16410041 (mfg: 0x020, part: 0x6410, ver: 0x1)
Info : stm32f1x.cpu: hardware has 6 breakpoints, 4 watchpoints

Tho OpenOCD has created a server, that you can connect with through telnet

telnet localhost 4444

Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Open On-Chip Debugger
> 

Mac OS X

./configure --enable-ft2232_ftd2xx openocd -f busblaster.cfg -f /usr/local/share/openocd/scripts/target/stm32f1x.cfg\\


busblaster.cfg:

interface ft2232
ft2232_device_desc "Dual RS232-HS"
ft2232_layout jtagkey
ft2232_vid_pid 0x0403 0x6010

basic info: http://pramode.net/fosstronics/stm32-circle.txt

RTOS

Chibios

Webpage of the project

Chibios is a basic realtime OS with HAL component that simplifies the work with a microprocessor. To facilitate the work, a Chibios configuration directly for module with ARM has been created, and it is available at github.

In order to obtain more documentation use ChibiOS/RT site.

#include <ch.h>
#include <hal.h>

int main(void) {

        halInit();
        chSysInit();

        while (TRUE) {
                palTogglePad(GPIOB, GPIOB_LED1);
                chThdSleepMilliseconds(250);

        }
}
en/arm_programming.txt · Last modified: 2013/11/08 14:05 (external edit)