UCOS内存管理

STM32F10xxx内置64K字节的静态SRAM。它可以以字节、半字(16位)或全字(32位)访问

SRAM的起始地址是0x20000000

UCOSII

//定义存储区

OS_MEM *DATA_MEM;

//存储区中存储块数量（可申请次数）

#define DATA_MEM_NUM        10

//每个存储块大小

#define DATA_MEMBLOCK_SIZE  128

//内存地址

__align(4) CPU_INT08U data_RamMemp[DATA_MEM_NUM][DATA_MEMBLOCK_SIZE] __attribute__((at(0x20001000)));

/*

OS_MEM  *OSMemCreate (void   *addr,

                      INT32U  nblks,

                      INT32U  blksize,

                      INT8U  *perr);

申请:

void  *OSMemGet (OS_MEM  *pmem,

                 INT8U   *perr);

释放:

INT8U  OSMemPut (OS_MEM  *pmem,

                 void    *pblk);

*/

int main()

{

    INT8U err;

    DATA_MEM = OSMemCreate(data_RamMemp,

                DATA_MEM_NUM,

                DATA_MEMBLOCK_SIZE,

                &err);

    void *data = OSMemGet(DATA_MEM, &err);

    if(data)

    {

        OSMemPut(DATA_MEM, data);

    }

    return 0;

}

UCOSIII

OS_MEM DATA_MEM;

#define DATA_MEM_NUM        5

#define DATA_MEMBLOCK_SIZE  64

__align(4) CPU_INT08U data_RamMemp[DATA_MEM_NUM][DATA_MEMBLOCK_SIZE] __attribute__((at(0x20002000)));

/*

void  OSMemCreate (OS_MEM       *p_mem,

                   CPU_CHAR     *p_name,

                   void         *p_addr,

                   OS_MEM_QTY    n_blks,

                   OS_MEM_SIZE   blk_size,

                   OS_ERR       *p_err);

void  *OSMemGet (OS_MEM  *p_mem,

                 OS_ERR  *p_err);

void  OSMemPut (OS_MEM  *p_mem,

                void    *p_blk,

                OS_ERR  *p_err);

*/

int main()

{

    OS_ERR err;

    OSMemCreate(&DATA_MEM,

                "data mem"

                data_RamMemp,

                DATA_MEM_NUM,

                DATA_MEMBLOCK_SIZE,

                &err);

    void *data = OSMemGet(&DATA_MEM, &err);

    if(data)

    {

        OSMemPut(&DATA_MEM, data, &err);

    }

    return 0;

}

巴特西

UCOS内存管理

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