YTM32B1MD14 MCAL A/B SWAP Demo及操作流程演示

[yysq]

1、例程将PFlash0作为A面，PFlash1作为B面，实现AB SWAP。
Demo参考例程：MD14_A_B_SWAP_Demo.zip

2、Demo功能介绍
AB_Swap驱动：通过内部闪存命令（0x30）执行SWAP操作，该命令在Fls_NvrLoadCommandSync()函数执行。

FLS_FUNC Fls_Lld_ReturnType Fls_WriteSwap(void)
{
    Fls_Lld_ReturnType RetVal = FLASH_E_OK;
    /*Clear command*/
    EFM->CMD = 0U;
    /*Clear all error flags*/
    EFM->STS =  FLS_ERR_FLAGS_MASK | EFM_STS_DONE_MASK;
#if (FLS_WEBIT_AVAILABLE==STD_ON)
    Fls_NvrWriteEnable();
#endif
    /*Write data and select the writing address*/
    // *((volatile uint32 *)(FLS_BOOT_SWAP_BASE_ADDR)) = 0;
#if (FLS_WEBIT_AVAILABLE==STD_ON)
    Fls_NvrWriteDisable();
    if(TRUE==Fls_NvrAddrSelJudge(0x1000U))
    {
        RetVal = FLASH_E_OK;
    }
#endif
    if(FLASH_E_OK==RetVal)
    {
#if (FLS_SCHM_SUPPORT==STD_ON)
        SchM_Enter_Fls_FLS_EXCLUSIVE_AREA_00();
#endif
#if (FLS_TIMEOUT_SUPERVISION_ENABLED==STD_ON)
        RetVal = Fls_NvrLoadCommandSync(FLS_BOOT_SWAP_CMD,FLS_SYNC_WRITE_TIMEOUT);
#else
        RetVal = Fls_NvrLoadCommandSync(FLS_BOOT_SWAP_CMD,0);
#endif
#if (FLS_SCHM_SUPPORT==STD_ON)
        SchM_Exit_Fls_FLS_EXCLUSIVE_AREA_00();
#endif
    }
    return RetVal;
}

测试主逻辑：上电后通过Fls_ReadSwap()函数读取标志位，通过info标志判断当前代码运行在哪个PFflash中，程序运行在PFlash0时点亮LED_B，运行在PFlash1时点亮LED_G。

if (info == 0u) {
        Fls_WriteSwap();
        Dio_WriteChannel(DioConf_DioChannel_LED_B, STD_OFF);
        delay();
        Mcu_Lld_SystemReset();
    }
    else 
    {
        Fls_WriteSwap();
        Dio_WriteChannel(DioConf_DioChannel_LED_G, STD_OFF);
        delay();
        Mcu_Lld_SystemReset();
    }

3、测试验证
(1)查看手册看到 PFlash0的起始地址0x00000000 PFlash1的起始地址0x000040000

(2)选择对应芯片

(3)建立连接后擦除芯片

(4)点击 file->open data file选择.elf文件

(4)将程序烧写进PFlash0

(5)对PFlash1 进行程序烧录，在Edit->Relocate界面将烧录地址偏移到PFlash1中，然后烧录程序。

4、重新上电运行程序
程序会在蓝灯和绿灯之间来回切换（蓝灯代表运行在PFLASH0里，绿灯代表运行在PFLASH1里）