Setup eCos Development Environment on Ubuntu 12.04 for STM32

Before You Begin

• Make sure you are using Ubuntu 12.04 64-bit, so that there won't be any difference.
• http://heron-note.blogspot.tw/2013/10/stm32-development-environment-setup-on.html Follow the instruction in this site to setup the STM32 development environment.

Install Required Tools & Dependencies

• sudo apt-get install cvs libstdc++5 ia32-libs libglib2.0-dev

Download eCos then Setup

• wget --passive-ftp ftp://ecos.sourceware.org/pub/ecos/ecos-install.tcl
• sh ecos-install.tcl
• choose a faster distribution site, like "[16] ftp://ftp.u-aizu.ac.jp/pub/gnu/cygnus/ecos", which may locate in Japan
• choose a location to store the downloads, take default /home/<username>/ecos as example in this article
• select "[1] arm-eabi", which is said in my course assignment instruction; however, I found we don't need this if we have arm-none-eabi (which we've installed already)
• cd /home/<username>/ecos
• cvs -z3 -d :pserver:anoncvs@ecos.sourceware.org:/cvs/ecos co -P ecos
• in file "ecosenv.sh", modify "ECOS_REPOSITORY=/home/<username>/ecos/ecos-3.0/packages ; export ECOS_REPOSITORY" to "ECOS_REPOSITORY=/home/<username>/ecos/ecos/packages ; export ECOS_REPOSITORY"
• . ecosenv.sh
• this exports the system PATHs for ecos tools

Create HelloWorld Project

• cd <somewhere you like to place you project>
• mkdir ecos_project && cd ecos_project
• ecosconfig new stm32f4discovery
• configtool
• change "eCos HAL->Cortex-M Architecture->Cortex-M3/-M4 STM32 Variant->STMicoelectronics STM32F4-Discovery board HAL->Startup Type" to ROM instead of JTAG
• this starts an GUI interface, open the "ecos.ecc" file which locates in the folder "stm32f4discovery" just created
• press "Build" -> "Generate Build Tree"
• create an hello.c file, like:

#include <stdio.h>
int main(){
  printf("hello ecos!\r\n");
}

• arm-none-eabi-gcc -o Hello.elf hello.c -Lecos_install/lib -I ecos_install/include -mcpu=cortex-m4 -mthumb -g -O2 -ffunction-sections -fdata-sections -Ttarget.ld -nostdlib
• arm-none-eabi-objcopy -O binary -R .sram Hello.elf Hello.bin
• finally, you got Hello.bin here, and burn it into stm32 by following the instruction in last article using QSTLink2