简单介绍下安装, 下载ecos-install.tcl,然后用SHELL执行安装,选ARM工具链及源码即可.

 

安装ecos3.0源码后,在目录ecos-3.0\packages\hal\cortexm\stm32\下能找到EVAL的开发板,

这块开发板有外扩的RAM及NORFlash,手边没有相应的板子,所以这里要修改.

 

板子是105RC的,所以复制stm3210e_eval目录为stm32f105_tcu,并修改其中的CDL及源码、LDI等文件，包括文件名及内容。

CDL根据板子修改如下：文件名，

修改串口号，

    # implements CYGINT_HAL_STM32_UART0

# implements CYGINT_HAL_STM32_UART1

# walnutcy 2011.07.08

    implements CYGINT_HAL_STM32_UART3

implements CYGINT_HAL_STM32_UART4

修改启动方式：

cdl_component CYG_HAL_STARTUP {

        display       "Startup type"

        flavor        data

        default_value {"ROM"}

        legal_values  {"ROM"}

修改内存布局：

    cdl_component CYGHWR_MEMORY_LAYOUT {

        display "Memory layout"

        flavor data

        no_define

        calculated    { "cortexm_stm32f105_tcu_rom" }

 

include/pkgconf下只留两个文件：

mlt_cortexm_stm32f105_tcu_rom.ldi，mlt_cortexm_stm32f105_tcu_rom.h

H文件修改后如下：

#define CYGMEM_REGION_sram (0x20000000)

#define CYGMEM_REGION_sram_SIZE (0x00010000-CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE)

#define CYGMEM_REGION_sram_ATTR (CYGMEM_REGION_ATTR_R | CYGMEM_REGION_ATTR_W)

#define CYGMEM_REGION_flash (0x08000000)

#define CYGMEM_REGION_flash_SIZE (0x00080000)

#define CYGMEM_REGION_flash_ATTR (CYGMEM_REGION_ATTR_R | CYGMEM_REGION_ATTR_W)

// walnutcy 2011.07.07

#define CYGMEM_REGION_ram            CYGMEM_REGION_sram

#define CYGMEM_REGION_ram_SIZE   CYGMEM_REGION_sram_SIZE

//#define CYGMEM_REGION_ram (0x68000000)

//#define CYGMEM_REGION_ram_SIZE (0x00100000)

//#define CYGMEM_REGION_ram_ATTR (CYGMEM_REGION_ATTR_R | CYGMEM_REGION_ATTR_W)

//#define CYGMEM_REGION_rom (0x64000000)

//#define CYGMEM_REGION_rom_SIZE (0x01000000)

//#define CYGMEM_REGION_rom_ATTR (CYGMEM_REGION_ATTR_R)

LDI文件修改后如下：

MEMORY

{

    sram  : ORIGIN = 0x20000000, LENGTH = 0x00010000-CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE

    flash : ORIGIN = 0x08000000, LENGTH = 0x00080000

}

 

SECTIONS

{

    SECTIONS_BEGIN

    SECTION_rom_vectors (flash, 0x08000000, LMA_EQ_VMA)

    SECTION_RELOCS (flash, ALIGN (0x8), LMA_EQ_VMA)

    SECTION_text (flash, ALIGN (0x8), LMA_EQ_VMA)

    SECTION_fini (flash, ALIGN (0x8), LMA_EQ_VMA)

    SECTION_rodata (flash, ALIGN (0x8), LMA_EQ_VMA)

    SECTION_rodata1 (flash, ALIGN (0x8), LMA_EQ_VMA)

    SECTION_fixup (flash, ALIGN (0x8), LMA_EQ_VMA)

    SECTION_gcc_except_table (flash, ALIGN (0x8), LMA_EQ_VMA)

    SECTION_eh_frame (flash, ALIGN (0x8), LMA_EQ_VMA)

    SECTION_got (flash, ALIGN (0x8), LMA_EQ_VMA)

    SECTION_sram (sram, 0x20000400, FOLLOWING (.got))

    SECTION_data (sram, ALIGN (0x8), FOLLOWING (.sram))

    SECTION_bss (sram, ALIGN (0x8), LMA_EQ_VMA)

    CYG_LABEL_DEFN(__heap1) = ALIGN (0x8);

    SECTIONS_END

}

 

其他代码修改部分：

stm32f105_tcu_misc.c修改，

hal_system_init函数中注释掉部分，如下：

    // Set up GPIO lines for external bus

    //base = CYGHWR_HAL_STM32_GPIOD;

    //HAL_WRITE_UINT32( base+CYGHWR_HAL_STM32_GPIO_CRL, 0x44bb44bb );

    //HAL_WRITE_UINT32( base+CYGHWR_HAL_STM32_GPIO_CRH, 0xbbbbbbbb );

    //base = CYGHWR_HAL_STM32_GPIOE;

    //HAL_WRITE_UINT32( base+CYGHWR_HAL_STM32_GPIO_CRL, 0xbbbbb4bb );

    //HAL_WRITE_UINT32( base+CYGHWR_HAL_STM32_GPIO_CRH, 0xbbbbbbbb );

 

    //base = CYGHWR_HAL_STM32_GPIOF;

    //HAL_WRITE_UINT32( base+CYGHWR_HAL_STM32_GPIO_CRL, 0x44bbbbbb );

    //HAL_WRITE_UINT32( base+CYGHWR_HAL_STM32_GPIO_CRH, 0xbbbb4444 );

 

    //base = CYGHWR_HAL_STM32_GPIOG;

    //HAL_WRITE_UINT32( base+CYGHWR_HAL_STM32_GPIO_CRL, 0x44bbbbbb );

    //HAL_WRITE_UINT32( base+CYGHWR_HAL_STM32_GPIO_CRH, 0x44444bb4 );

 

    //---walnutcy 2011.07.07

    // Set up FSMC NOR/SRAM bank 2 for NOR Flash

 

    //base = CYGHWR_HAL_STM32_FSMC;

    //HAL_WRITE_UINT32( base+CYGHWR_HAL_STM32_FSMC_BCR2, 0x00001059 );

    //HAL_WRITE_UINT32( base+CYGHWR_HAL_STM32_FSMC_BTR2, 0x10000705 );

 

    // Set up FSMC NOR/SRAM bank 3 for SRAM

    //HAL_WRITE_UINT32( base+CYGHWR_HAL_STM32_FSMC_BCR3, 0x00001011 );

//HAL_WRITE_UINT32( base+CYGHWR_HAL_STM32_FSMC_BTR3, 0x00000200 );

 

stm32f105_tcu_flash.c中修改如下：

删除AMD NorFlash相关函数，修改后如下：

cyg_stm32_flash_dev hal_stm32_flash_priv;

 

CYG_FLASH_DRIVER(hal_stm32_flash,

                 &cyg_stm32_flash_funs,

                 0,

                 0x08000000,

                 0,

                 0,

                 0,

                 &hal_stm32_flash_priv

);

 

最后是修改ecos.db，在文件的最后添加：

package CYGPKG_HAL_CORTEXM_STM32_STM32F105_TCU {

     alias                   { "ST STM32F105 TCU HAL" hal_cortexm_stm32f105_tcu }

     directory          hal/cortexm/stm32/stm32f105_tcu

     script                 hal_cortexm_stm32_stm32f105_tcu.cdl

     hardware

        description "

        The stm32f105_tcu HAL package provides the support needed to run

        eCos on the ST STM32F105 TCU board."

}

 

target stm32f105_tcu {

        alias { "ST STM32F105 TCU board" stm32f105 }

        packages { CYGPKG_HAL_CORTEXM

                   CYGPKG_HAL_CORTEXM_STM32

                   CYGPKG_HAL_CORTEXM_STM32_STM32F105_TCU

                   CYGPKG_DEVS_FLASH_STM32

                   CYGPKG_DEVS_FLASH_SPI_M25PXX

                   CYGPKG_IO_SERIAL_CORTEXM_STM32

                   CYGPKG_DEVS_WALLCLOCK_STM32

                   CYGPKG_IO_SPI

                   CYGPKG_DEVS_SPI_CORTEXM_STM32

                 }

        description "The stm32f105_tcu target provides the packages needed

        to run eCos on the STM32F105 TCU board."

}

完成后，启动ecos configuration tool, 即可在Build/templates中找到STM32F105 TCU board，选择redboot编译即可，

在install目录会生成redboot.bin,不修改编译参数的情况下，大小约为40K。

redboot.elf 是用于调试的。可以在keil下仿真运行，从serial window查看redboot启动。

注serialwindow目前只能较好地支持STM32的uart1,uart2.