请问F28335的程序不能在flash中运行是为什么？

我用的是F28335_example_BIOS_flash.pjt项目文件

我将我的电机控制程序按例子做了修改，发现相同的问题，就是下载到flash后能运行正常，但是断电再运行，就不正常了。如果这是接上调试器运行，发现能运行到main函数，但是不能运行到我定义的各个进程。

最后发现问题和外部ram无关。只要关电源再开机，机器都会运行都FXN_F_selfLoop函数而死机。问题还是没有解决

1. 请确认你的boot 模式是否设置为Flash模式，即需要设置有关boot的GPIO的状态。
2. 你的外部存储器extmem0是指什么地址？

谢谢， extmem0 地址：0x100000，len：0x30000.
void UserInit(void)
[
#ifdef EXAMPLE_FLASH // EXAMPLE_FLASH, if defined, is in CCS project options
// Section .trcdata is generated by DSP/BIOS.
// It must be copied from its load to its run address BEFORE main().
memcpy(&trcdata_runstart, &trcdata_loadstart, &trcdata_loadend - &trcdata_loadstart);
#endif
//--- CPU Initialization
InitSysCtrl(); // Initialize the CPU
InitPieCtrl(); // Initialize and enable the PIE
InitWatchdog(); // Initialize the Watchdog Timer
InitGpio(); // Initialize the shared GPIO pins
InitXintf();
。。。
void InitXintf(void)
[
EALLOW;
XintfRegs.XINTCNF2.bit.XTIMCLK = 1;
// write buffering
while(XintfRegs.XINTCNF2.bit.WLEVEL != 0); // poll the WLEVEL bit;
XintfRegs.XINTCNF2.bit.WRBUFF = 3;
// XCLKOUT is disabled
XintfRegs.XINTCNF2.bit.CLKOFF = 1;
// XCLKOUT = XTIMCLK
XintfRegs.XINTCNF2.bit.CLKMODE = 0;
SysCtrlRegs.PCLKCR3.bit.DMAENCLK = 1; // DMA Clock
SysCtrlRegs.PCLKCR3.bit.XINTFENCLK = 1; // XTIMCLK
SysCtrlRegs.PCLKCR3.bit.GPIOINENCLK = 1; // GPIO input clock
//all Zone read/write lead/active/trail timing
XintfRegs.XTIMING0.bit.X2TIMING = 1;//0;//1;
// Zone 0------------------------------------
。。。 // Zone will not sample XREADY signal
XintfRegs.XTIMING0.bit.USEREADY = 0;
// XintfRegs.XTIMING0.bit.READYMODE = 1; // sample asynchronous
// Size must be either:
// 0,1 = x32 or
// 1,1 = x16 other values are reserved
XintfRegs.XTIMING0.bit.XSIZE = 3;
// Zone 6------------------------------------
// When using ready, ACTIVE must be 1 or greater
// Lead must always be 1 or greater
// Zone write timing
XintfRegs.XTIMING6.bit.XWRLEAD = 1;//3;
XintfRegs.XTIMING6.bit.XWRACTIVE =1 ;//7;
XintfRegs.XTIMING6.bit.XWRTRAIL = 0;//3;
// Zone read timing
XintfRegs.XTIMING6.bit.XRDLEAD = 1;//3;
XintfRegs.XTIMING6.bit.XRDACTIVE = 1;//7;
XintfRegs.XTIMING6.bit.XRDTRAIL = 0;//3;
// single all Zone read/write lead/active/trail timing
XintfRegs.XTIMING6.bit.X2TIMING = 0;
// Zone will sample XREADY signal
XintfRegs.XTIMING6.bit.USEREADY = 0;// 1;
// XintfRegs.XTIMING6.bit.READYMODE = 1; // sample asynchronous
// Size must be either:
// 0,1 = x32 or
// 1,1 = x16 other values are reserved
#if DATA_WIDTH >16
XintfRegs.XTIMING6.bit.XSIZE = 1;
#else
XintfRegs.XTIMING6.bit.XSIZE = 3;
#endif
// Bank switching
// Assume Zone 6 is slow, so add additional BCYC cycles
// when ever switching from Zone 6 to another Zone.
// This will help avoid bus contention.
XintfRegs.XBANK.bit.BANK = 6;
XintfRegs.XBANK.bit.BCYC = 6;
// double all Zone read/write lead/active/trail timing
XintfRegs.XTIMING7.bit.X2TIMING = 1;
// Zone will sample XREADY signal
XintfRegs.XTIMING7.bit.USEREADY = 1;
XintfRegs.XTIMING7.bit.READYMODE = 1; // sample asynchronous
// Size must be either:
// 0,1 = x32 or
// 1,1 = x16 other values are reserved
XintfRegs.XTIMING7.bit.XSIZE = 3;
// Bank switching
// Assume Zone 7 is slow, so add additional BCYC cycles
// when ever switching from Zone 6 to another Zone.
// This will help avoid bus contention.
// XintfRegs.XBANK.bit.BANK = 7;
// XintfRegs.XBANK.bit.BCYC = 7;
//EDIS;
//Force a pipeline flush to ensure that the write to
//the last register configured occurs before returning.
// EALLOW;
// InitXintf16Gpio();
//EALLOW;
GpioCtrlRegs.GPCMUX1.bit.GPIO64 = 3; // XD15
GpioCtrlRegs.GPCMUX1.bit.GPIO65 = 3; // XD14
GpioCtrlRegs.GPCMUX1.bit.GPIO66 = 3; // XD13
GpioCtrlRegs.GPCMUX1.bit.GPIO67 = 3; // XD12
GpioCtrlRegs.GPCMUX1.bit.GPIO68 = 3; // XD11
GpioCtrlRegs.GPCMUX1.bit.GPIO69 = 3; // XD10
GpioCtrlRegs.GPCMUX1.bit.GPIO70 = 3; // XD19
GpioCtrlRegs.GPCMUX1.bit.GPIO71 = 3; // XD8
GpioCtrlRegs.GPCMUX1.bit.GPIO72 = 3; // XD7
GpioCtrlRegs.GPCMUX1.bit.GPIO73 = 3; // XD6
GpioCtrlRegs.GPCMUX1.bit.GPIO74 = 3; // XD5
GpioCtrlRegs.GPCMUX1.bit.GPIO75 = 3; // XD4
GpioCtrlRegs.GPCMUX1.bit.GPIO76 = 3; // XD3
GpioCtrlRegs.GPCMUX1.bit.GPIO77 = 3; // XD2
GpioCtrlRegs.GPCMUX1.bit.GPIO78 = 3; // XD1
GpioCtrlRegs.GPCMUX1.bit.GPIO79 = 3; // XD0
GpioCtrlRegs.GPBMUX1.bit.GPIO40 = 3; // XA0/XWE1n
GpioCtrlRegs.GPBMUX1.bit.GPIO41 = 3; // XA1
GpioCtrlRegs.GPBMUX1.bit.GPIO42 = 3; // XA2
GpioCtrlRegs.GPBMUX1.bit.GPIO43 = 3; // XA3
GpioCtrlRegs.GPBMUX1.bit.GPIO44 = 3; // XA4
GpioCtrlRegs.GPBMUX1.bit.GPIO45 = 3; // XA5
GpioCtrlRegs.GPBMUX1.bit.GPIO46 = 3; // XA6
GpioCtrlRegs.GPBMUX1.bit.GPIO47 = 3; // XA7
GpioCtrlRegs.GPCMUX2.bit.GPIO80 = 3; // XA8
GpioCtrlRegs.GPCMUX2.bit.GPIO81 = 3; // XA9
GpioCtrlRegs.GPCMUX2.bit.GPIO82 = 3; // XA10
GpioCtrlRegs.GPCMUX2.bit.GPIO83 = 3; // XA11
GpioCtrlRegs.GPCMUX2.bit.GPIO84 = 3; // XA12
GpioCtrlRegs.GPCMUX2.bit.GPIO85 = 3; // XA13
GpioCtrlRegs.GPCMUX2.bit.GPIO86 = 3; // XA14
GpioCtrlRegs.GPCMUX2.bit.GPIO87 = 3; // XA15
GpioCtrlRegs.GPBMUX1.bit.GPIO39 = 3; // XA16
GpioCtrlRegs.GPAMUX2.bit.GPIO31 = 3; // XA17
GpioCtrlRegs.GPAMUX2.bit.GPIO30 = 3; // XA18
GpioCtrlRegs.GPAMUX2.bit.GPIO29 = 3; // XA19
// GpioCtrlRegs.GPBMUX1.bit.GPIO34 = 3; // XREADY
// GpioCtrlRegs.GPBMUX1.bit.GPIO35 = 3; // XRNW
// GpioCtrlRegs.GPBMUX1.bit.GPIO38 = 3; // XWE0
GpioCtrlRegs.GPBMUX1.bit.GPIO34 = 0; // XREADY
GpioCtrlRegs.GPBMUX1.bit.GPIO35 = 0; // XRNW
GpioCtrlRegs.GPBMUX1.bit.GPIO38 = 3; // XWE0
GpioCtrlRegs.GPBMUX1.bit.GPIO36 = 3; // XZCS0
GpioCtrlRegs.GPBMUX1.bit.GPIO37 = 3; // XZCS7
GpioCtrlRegs.GPAMUX2.bit.GPIO28 = 3; // XZCS6
EDIS;
asm(" RPT #7 || NOP");
] // end of InitXintf()
问题没有解决。

您好！请在Code Start Branch.asm中，将XINTF引脚配置成XINTF，因为默认是GPIO。再尝试一下。
具体的可以参考下面的代码：
***********************************************************************
WD_DISABLE .set 1 ;set to 1 to disable WD, else set to 0
.ref _c_int00
.global code_start
.ref _InitSysCtrl ;开外设
.ref _xintf_zone6and7_timing ;初始化XINTF总线为16BIT(用户的系统硬件设计相关)
***********************************************************************
* Function: codestart section
*
* Description: Branch to code starting point
***********************************************************************
.sect "codestart"
code_start:
.if WD_DISABLE == 1
LB wd_disable ;Branch to watchdog disable code
.else
LB _c_int00 ;Branch to start of boot.asm in RTS library
.endif
;end codestart section
***********************************************************************
* Function: wd_disable
*
* Description: Disables the watchdog timer
***********************************************************************
.if WD_DISABLE == 1
.text
wd_disable:
SETC OBJMODE ;Set OBJMODE for 28x object code
EALLOW ;Enable EALLOW protected register access
MOVZ DP, #7029h>>6 ;Set data page for WDCR register
MOV @7029h, #0068h ;Set WDDIS bit in WDCR to disable WD
EDIS
LCR _InitSysCtrl
LCR _xintf_zone6and7_timing ;Disable EALLOW protected register access
LB _c_int00 ;Branch to start of boot.asm in RTS library
.endif
;end wd_disable
.end
如果您认为此问题已被解答，请在“这是否解答您的问题” 后，点击“是”按钮！ 谢谢您的合作！

按照陈先生的提示，问题基本解决。现在还剩下的问题是上电复位有时行有时不行。估计和复位电路有关。感谢陈先生，感谢各位给我的帮助。

关于上电复位，请参考TI的标准的复位电路，有些电源芯片本身就包含复位信号输出，例如TPS767D318。
如果用阻容电路，要保证复位信号保持512个Cycle的低电平，再拉高。
如果您认为此问题已被解答，请在“这是否解答您的问题” 后，点击“是”按钮！ 谢谢您的合作！

电路上有u***芯片。u***上电自动下载固件。下载失败的话系统就出问题了。给u***加了iic芯片，内含固件。问题完全解决了。

你好，如果我要将所有text从内部flash复制到片外RAM运行，在进入_c_int00之前如何预初始化XINTF，在DSP2833x_CodeStartBranch.asm中如何用汇编来实现XINTF和InitSysCtrl函数的调用。我使用您上面的代码试过，没有成功......