[活动专区] 【AT-START-F407测评】+SPIM测试

void FLASH_InitExtFlash(void)

{

  GPIO_InitType GPIO_InitStructure;

  

  /* Enable ext.flash GPIO clock */

  RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_AFIO|RCC_APB2PERIPH_GPIOA|RCC_APB2PERIPH_GPIOB, ENABLE);

  

  /* Configure ext.flash pin */

  GPIO_StructInit(&GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pins = GPIO_Pins_8;

  GPIO_InitStructure.GPIO_MaxSpeed = GPIO_MaxSpeed_50MHz;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

  GPIO_Init(GPIOA, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pins = GPIO_Pins_1|GPIO_Pins_6|GPIO_Pins_7|GPIO_Pins_10|GPIO_Pins_11;

  GPIO_Init(GPIOB, &GPIO_InitStructure);

  

  /* Select PB10, PB11 as SPIF_TX and SPIF_RX */

  GPIO_PinsRemapConfig(GPIO_Remap_EXT_FLASH, ENABLE);

  GPIO_PinsRemapConfig(AFIO_MAP7_SPIF_1001, ENABLE);

  

  /* In this example, use on-board EN25QH128A as ext.flash */

  FLASH->B3SEL = FLASH_SPIM_TYPE2;

  

  /* Unlock the ext.flash program erase controller */  

  while (BIT_READ(FLASH->STS3, FLASH_STS_BSY));

  FLASH->FCKEY3 = FLASH_KEY1;

  FLASH->FCKEY3 = FLASH_KEY2;

  while (BIT_READ(FLASH->CTRL3, FLASH_CTRL_LCK));

  

  /* If the data written to ext.flash need to be scrambled, please specify the scrambled range */

  FLASH->DA = 0;

  

  return;

}

{

    FLASH_InitExtFlash();

    

    FLASH_UnlockBank3();

    

    //erase all

    tick_start = sys_st.u_tick;    

    FLASH_EraseBank3AllPages();

    sys_st.spim.erase_time = sys_st.u_tick - tick_start;

    

    //program

    tick_start = sys_st.u_tick; 

    dat = 0;

    for(addr=0x8400000; addr < ( 0x8400000 + 16 * 1024 *1024) ; addr+=4)

    {

        FLASH_ProgramWord(addr, dat++);

    }

    sys_st.spim.program_time = sys_st.u_tick - tick_start;

    

    //read

    tick_start = sys_st.u_tick; 

    for(addr=0x8400000; addr < ( 0x8400000 + 16 * 1024 *1024) ; addr+=4)

    {

        rdat = *((volatile uint32_t *)addr);

    }

    sys_st.spim.read_time = sys_st.u_tick - tick_start;

    

    FLASH_LockBank3();  

}