TMS320F280025: Flash擦除时DSP异常进入ESTOP0

开发二次Bootloader功能，程序在擦除Flash的时候可能会出现崩溃的情况。

项目的cmd文件如下：

MEMORY
{BOOT_RSVD: origin = 0x00000002, length = 0x00000126RAMM0	: origin = 0x00000128, length = 0x000002D8RAMM1: origin = 0x00000400, length = 0x000003F8/* on-chip RAM block M1 */
// RAMM1_RSVD: origin = 0x000007F8, length = 0x00000008 /* Reserve and do not use for code as per the errata advisory "Memory: Prefetching Beyond Valid Memory" */

/* RAMLS4: origin = 0x0000A000, length = 0x00000800RAMLS5: origin = 0x0000A800, length = 0x00000800RAMLS6: origin = 0x0000B000, length = 0x00000800RAMLS7: origin = 0x0000B800, length = 0x00000800RAMGS0: origin = 0x0000C000, length = 0x000007F8RAMGS0_RSVD: origin = 0x0000C7F8, length = 0x00000008 // Reserve and do not use for code as per the errata advisory "Memory: Prefetching Beyond Valid Memory"*//* Combining all the LS RAMs and GS0 RAM */RAML_Data: origin = 0x0000A000, length = 0x00001400RAML_Prog: origin = 0x0000B400, length = 0x00001400BOOTROM: origin = 0x003F0000, length = 0x00008000BOOTROM_EXT: origin = 0x003F8000, length = 0x00007FC0RESET: origin = 0x003FFFC0, length = 0x00000002/* Flash sectors */BEGIN_BOOT: origin = 0x080000, length = 0x000008 //,fill = 0xFFFF/* codestart*/BOOT_STARTFLAG: origin = 0x080008, length = 0x000010	//,fill = 0xFFFF/* bootloader flag*/BOOT_VERSION: origin = 0x080018, length = 0x000008	//,fill = 0xFFFF/* bootloader version*/BOOT_FLASH: origin = 0x080020, length = 0x001FD0	//,fill = 0xFFFF/* bootloader code*/BOOT_DATETIME: origin = 0x081FF0, length = 0x000008	//,fill = 0xFFFF/* bootloader finish flag*/BOOT_FINISHFLAG: origin = 0x081FF8, length = 0x000008	//,fill = 0xFFFF/* bootloader finish flag*/APP1_BEGIN: origin = 0x082000, length = 0x000008 ,fill = 0xFFFF/* codestart*/APP1_STARTFLAG: origin = 0x082008, length = 0x000010	,fill = 0xFFFF/* app1 flag*/APP1_VERSION: origin = 0x082018, length = 0x000008	,fill = 0xFFFF/* app1 version*/APP1_FLASH: origin = 0x082020, length = 0x006FD0	,fill = 0xFFFF/* app1 code */APP1_DATETIME: origin = 0x088FF0, length = 0x000008	,fill = 0xFFFF/* app1 code */APP1_FINISHFLAG: origin = 0x088FF8, length = 0x000008	,fill = 0xFFFF/* app1 finish flag*/APP2_BEGIN: origin = 0x089000, length = 0x000008 //,fill = 0xFFFF/* codestart*/APP2_STARTFLAG: origin = 0x089008, length = 0x000010	//,fill = 0xFFFF/* app2 flag*/APP2_VERSION: origin = 0x089018, length = 0x000008	//,fill = 0xFFFF/* app2 version*/APP2_FLASH: origin = 0x089020, length = 0x006FD0	//,fill = 0xFFFF/* app2 code */APP2_DATETIME: origin = 0x08FFF0, length = 0x000008	//,fill = 0xFFFF/* app1 code */APP2_FINISHFLAG: origin = 0x08FFF8, length = 0x000008	//,fill = 0xFFFF/* app2 finish flag*/
//  FLASH_BANK1_RSVD : origin = 0x0008FFF0, length = 0x00000010 /* Reserve and do not use for code as per the errata advisory "Memory: Prefetching Beyond Valid Memory" */
}

其中bootloader程序占据sector0~sector1

app1占据sector2~sector8

app2占据sector9~sector15

bootloader运行后检查app2是否有有效的程序代码：如果有则擦除app1区域，并将app2代码拷贝至app1区，然后擦除app2区域，最后跳转至app1运行；如果app2没有有效代码，则跳转至app1运行

CCS项目采用TI ROM提供的FlashAPI代码，项目中包含的库文件为：FlashAPI_F28002x_FPU32_ROM_EABI.lib

操作flash的关键代码如下：

//before using any FlashAPI ,Initalize it first
voidUpgrade_Initialize_FlashAPI()
{if(isFlashAPI_Initialized)  return;Fapi_StatusType oReturnCheck;oReturnCheck = Fapi_initializeAPI(F021_CPU0_BASE_ADDRESS, DEVICE_SYSCLK_FREQ/1000000U);if(oReturnCheck != Fapi_Status_Success) return;oReturnCheck = Fapi_setActiveFlashBank(Fapi_FlashBank0);if(oReturnCheck != Fapi_Status_Success) return;isFlashAPI_Initialized = true;
}
//Erase single sector at address 
#pragma CODE_SECTION(EraseSingleSector, ".TI.ramfunc");
Fapi_StatusType EraseSingleSector(Uint32 u32StartAddress)
{Fapi_StatusType  oReturnCheck;Fapi_FlashStatusWordType oFlashStatusWord;oReturnCheck = Fapi_issueAsyncCommandWithAddress(Fapi_EraseSector,(Uint32 *)u32StartAddress);//wait uintil FSM is done with erase sector operationwhile (Fapi_checkFsmForReady() != Fapi_Status_FsmReady){ServiceDog();}if(oReturnCheck != Fapi_Status_Success) return oReturnCheck;//verify the sector is erasedoReturnCheck = Fapi_doBlankCheck((Uint32 *)u32StartAddress,Sector8KB_u32length,&oFlashStatusWord);return oReturnCheck;
}
//Program flash ,must reside in RAM
#pragma CODE_SECTION(Upgrade_ProgramFlash, ".TI.ramfunc");
Fapi_StatusType Upgrade_ProgramFlash(Uint32 u32StartAddress,uint16 *pu16DataBuffer,uint16 u16DataBufferSizeinWords)
{Fapi_StatusType  oReturnCheck;//Disable intterupt before programmingDINT;oReturnCheck = Fapi_issueProgrammingCommand((Uint32*)u32StartAddress,pu16DataBuffer,u16DataBufferSizeinWords,0,0,Fapi_AutoEccGeneration);//wait uintil FSM is done with erase sector operationwhile (Fapi_checkFsmForReady() != Fapi_Status_FsmReady){ServiceDog();}

//Fapi_getFsmStatus();//Enable intterupt after programmingEINT;return oReturnCheck;
}

//Erase sectors of boot 
boolUpgrade_EraseSectorOfBoot()
{Upgrade_Initialize_FlashAPI();if(Fapi_Status_Success != EraseSingleSector(Bzero_Sector0_start)) return false;if(Fapi_Status_Success != EraseSingleSector(Bzero_Sector1_start)) return false;u16UpgradeFlag  = Upgrade_Flag_Boot;u32ProgramStartAddress  = Boot_StartAddress;u32ProgramEndAddress= Boot_EndAddress;u32ProgrammingAddress= Boot_StartAddress;return true;
}
//Erase sectors of App1 
boolUpgrade_EraseSectorOfApp1()
{DINT;Upgrade_Initialize_FlashAPI();if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector2_start)) return false;if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector3_start)) return false;if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector4_start)) return false;if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector5_start)) return false;if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector6_start)) return false;if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector7_start)) return false;if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector8_start)) return false;u16UpgradeFlag  = Upgrade_Flag_App1;u32ProgramStartAddress = App1_StartAddress;u32ProgramEndAddress= App1_EndAddress;u32ProgrammingAddress= App1_StartAddress;EINT;return true;
}
//Erase sectors of App2 
boolUpgrade_EraseSectorOfApp2()
{DINT;Upgrade_Initialize_FlashAPI();if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector9_start)) return false;if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector10_start)) return false;if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector11_start)) return false;if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector12_start)) return false;if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector13_start)) return false;if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector14_start)) return false;if(Fapi_Status_Success != EraseSingleSector((Uint32)Bzero_Sector15_start)) return false;u16UpgradeFlag  = Upgrade_Flag_App2;u32ProgramStartAddress = App2_StartAddress;u32ProgramEndAddress= App2_EndAddress;u32ProgrammingAddress= App2_StartAddress;EINT;return true;
}
//if App2 has valid app code,erase app1 sectors,copy app2 data to app1 data
voidUpgrade_CheckUpgrade()
{Uint32 u32Address_Read;Uint32 u32Address_Write;if(IsApp2_Valid()){//clear app1 data codeUpgrade_EraseSectorOfApp1();//copy app2 to app1u32Address_Read= App2_StartAddress;u32Address_Write= App1_StartAddress;while(u32Address_Read < App2_EndAddress){Upgrade_ProgramFlash(u32Address_Write,(Uint16 *)u32Address_Read,8);u32Address_Read+= 8;u32Address_Write+= 8;}//clear app2 data codeUpgrade_EraseSectorOfApp2();}
}

调用 Upgrade_EraseSectorOfApp2()函数，擦除Sector9后，在擦除sector10时程序进入ESTOP0

程序跟踪可以看到，调用的Fapi_issueAsynCommand 函数位于 0x3f8ec8

请问擦除后崩溃的原因可能是什么？

还有，如何将TI ROM中的FlashAPI代码放在RAM中执行？

BarBiQ：

补充一下：

擦除FLASH时，有时候擦除第2个Sector时崩溃，有时擦除第3个Sector时崩溃

同样的代码，之前还有全部擦除成功的情况。

,

BarBiQ：

还补充一下，当前测试出问题的工程是实际工程项目的代码加入了bootloader功能。

如果用另外一个简单的测试App程序，则擦除过程没有问题。

2个app工程所用到的擦除代码都是一模一样的，2个App代码均运行于App1区域