F28335的程序不能在flash中运行-TI中文支持网

320f28335

我编写的程序在ram中运行没有问题。在flash中不能运行。我学习了你们的帮助文档，下载了你们的在flash中运行的实例，发现可以在flash中运行。我讲实例稍微修改，只修改了bss和ebss部分从l4ram改为外部存储器extmem0，发现程序下载后能正常运行，但是将cpu复位后运行就不对了。。如果问题解决，请回邮件到huangpeng8@163.com.谢谢。

peng huang：

我用的是F28335_example_BIOS_flash.pjt项目文件

320f28335

peng huang：

回复 peng huang:

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。

320f28335

peng huang：

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

320f28335

Yanming Luo：

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？

320f28335

peng huang：

回复 Yanming Luo:

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。

320f28335

Jones Chen：

回复 peng huang:

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

320f28335

Lin Liu7：

回复 Jones Chen:

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……

F28335的程序不能在flash中运行

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