TMS320F28075 freezes when enabling the flash API

Benjamin,

1) What are the wait-states that you are using in the Flash initialization routine?
2) It is not clear from your post on exactly when the issue is happening. Is it happening after you load the code to Flash using CCS Flash Plugin? If yes, what did you program using CCS Flash Plugin ?- I mean what does that application do?
3) Did you try to give a debug reset before programming the Flash contents using CCS Flash Plugin?
4) Did you try to give a debug reset after programming the Flash contents using CCS Flash Plugin and before doing a restart?
5) What are the PLL GUI settings that are using in CCS Flash Plugin?
6) You said the issue disappeared. Did it disappear after few more trials of programming using API or using CCS Flash Plugin?
7) Can you share your project?
8) I am looking in to the BootROM location that you mentioned. Will let you know.
9) I am not able to access the forum post link that you mentioned. Are you able to access it? What is discussed in it?
10) You can use F021_API_F2837xD_FPU32.lib to do erase/program operations on F28075 Flash bank since F2837xD and F2807x share the same flash bank architecture.

Thanks and regards,
Vamsi

1. The "F2807x_SysCtrl.c" file was not modified from Control Suite v190, so my waitstate setting is Flash0CtrlRegs.FRDCNTL.bit.RWAIT = 0x2;.  FlashInit is called inside "InitSysCtrl".

2. The issue happens whenever I run the code.  This means that it happens on a power cycle (the code will not run), running from CCS debug, or doing a CPU reset from CCS debug.  Stepping through the code I know that the function call to Fapi_setActiveFlashBank causes the MCU to jump to 0x3fe493 and stop program execution.  I have stripped the application down to simply enable flash and enter an infinite loop to blink LED's.  Commenting out the call to Fapi_setActiveFlashBank allows the program to actually get to the LED blinking portion of main().

3. Is CCS Flash Plugin the utility that flashes the code into the MCU when clicking the Debug button in Code Composer?  If so, then yes, doing a CPU reset results in the same issue.  

4. Yes, same issue.

5.  OSCCLK(MHz)(INTOSC2) = 10, SPLLIMULT = 24, SPLLFMULT = 0, SYSDIVSEL = 1[/2]

6.  The only calls to the flash API that were made are Fapi_initializeAPI and Fapi_setActiveFlashBank - the current code does not do any flash erase or flash writes.  The issue went away after erasing and reprogramming the device through CCS - no code modifications were made.  The issue has since returned.

7. Not sure if I am allowed to upload, will get back to you on that.

9. The post was by Daniel NDIAYE titled TMS320F28377D: Flash programming issue.  The only real similarity was the memory address I mentioned.  He was actually getting an error message reported back (I do not).  They told him to update his version of Control Suite. 

I've been running a number of tests to try to figure out what is going on. I got the code to successfully return from the "Fapi_setActiveFlashBank(Fapi_FlashBank0)" function by commenting out some global variables and functions unrelated to the flash API initialization functions. This made me think the real issue had to do with memory/linking rather than the code itself. The issue seemed to go away after modifying my .cmd file. I will post both versions of the .cmd file below (the broken one first, and the one that works second). I would appreciate it if you can explain what I was doing wrong initially.

Notice that the only difference between the two is that in the first, PROG is defined to be FLASHA, FLASHB, and FLASHC. In the second PROG is defined to be FLASHB, FLASHC, and FLASHD. According to the .map file, the used portion of PROG is only 00003be2.

MEMORY
{
PAGE 0 : /* Program Memory */
/* Memory (RAM/FLASH) blocks can be moved to PAGE1 for data allocation */
/* BEGIN is used for the "boot to Flash" bootloader mode */

BEGIN : origin = 0x080000, length = 0x000002
//RAMLS0 : origin = 0x008000, length = 0x000800
//RAMLS1 : origin = 0x008800, length = 0x000800
//RAMLS2 : origin = 0x009000, length = 0x000800
//RAMLS3 : origin = 0x009800, length = 0x000800
//RAMLS4 : origin = 0x00A000, length = 0x000800
RAMLS : origin = 0x008000, length = 0x002800
RESET : origin = 0x3FFFC0, length = 0x000002

/* Flash sectors */

PROG : origin = 0x080002, length = 0x005FFE /* Program code - unified flash */
//FLASHA : origin = 0x080002, length = 0x001FFE /* on-chip Flash */
//FLASHB : origin = 0x082000, length = 0x002000 /* on-chip Flash */
//FLASHC : origin = 0x084000, length = 0x002000 /* on-chip Flash */
FLASHD : origin = 0x086000, length = 0x002000 /* on-chip Flash */
FLASHE : origin = 0x088000, length = 0x008000 /* on-chip Flash */
FLASHF : origin = 0x090000, length = 0x008000 /* on-chip Flash */
FLASHG : origin = 0x098000, length = 0x008000 /* on-chip Flash */
FLASHH : origin = 0x0A0000, length = 0x008000 /* on-chip Flash */
FLASHI : origin = 0x0A8000, length = 0x008000 /* on-chip Flash */
FLASHJ : origin = 0x0B0000, length = 0x008000 /* on-chip Flash */
FLASHK : origin = 0x0B8000, length = 0x002000 /* on-chip Flash */

PAGE 1 : /* Data Memory */
/* Memory (RAM/FLASH) blocks can be moved to PAGE0 for program allocation */

BOOT_RSVD : origin = 0x000002, length = 0x000120 /* Part of M0, BOOT rom will use this for stack */
RAMM0 : origin = 0x000122, length = 0x0002DE
RAMM1 : origin = 0x000400, length = 0x000400 /* on-chip RAM block M1 */
RAMD0 : origin = 0x00B000, length = 0x000800
RAMD1 : origin = 0x00B800, length = 0x000800

RAMLS5 : origin = 0x00A800, length = 0x000800

RAMGS0 : origin = 0x00C000, length = 0x001000
RAMGS1 : origin = 0x00D000, length = 0x001000
RAMGS2 : origin = 0x00E000, length = 0x001000
RAMGS3 : origin = 0x00F000, length = 0x001000
RAMGS4 : origin = 0x010000, length = 0x001000
RAMGS5 : origin = 0x011000, length = 0x001000
RAMGS6 : origin = 0x012000, length = 0x001000
RAMGS7 : origin = 0x013000, length = 0x001000


FLASHL : origin = 0x0BA000, length = 0x002000 /* on-chip Flash */
FLASHM : origin = 0x0BC000, length = 0x002000 /* on-chip Flash */
FLASHN : origin = 0x0BE000, length = 0x002000 /* on-chip Flash */
}


SECTIONS
{
/* Allocate program areas: */
.cinit : > PROG PAGE = 0, ALIGN(4)
.pinit : > PROG, PAGE = 0, ALIGN(4)
.text : >> PROG PAGE = 0, ALIGN(4)
codestart : > BEGIN PAGE = 0, ALIGN(4)
ramfuncs : LOAD = PROG,
RUN = RAMLS,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
RUN_SIZE(_RamfuncsRunSize),
RUN_END(_RamfuncsRunEnd),
PAGE = 0, ALIGN(4)

/* Allocate uninitalized data sections: */
.stack : > RAMD0 PAGE = 1
.ebss : >> RAMGS6 | RAMGS7 PAGE = 1
.esysmem : >> RAMGS6 | RAMGS7 PAGE = 1

/* Initalized sections go in Flash */
.econst : >> PROG PAGE = 0, ALIGN(4)
.switch : > PROG PAGE = 0, ALIGN(4)

.reset : > RESET, PAGE = 0, TYPE = DSECT /* not used, */

ramgs0 : > RAMGS0, PAGE = 1
ramgs1 : > RAMGS1, PAGE = 1

/* The following section definition are for SDFM examples */
Filter1_RegsFile : > RAMGS1, PAGE = 1, fill=0x1111
Filter2_RegsFile : > RAMGS2, PAGE = 1, fill=0x2222
Filter3_RegsFile : > RAMGS3, PAGE = 1, fill=0x3333
Filter4_RegsFile : > RAMGS4, PAGE = 1, fill=0x4444
Difference_RegsFile : >RAMGS5, PAGE = 1, fill=0x3333

}





MEMORY
{
PAGE 0 : /* Program Memory */
/* Memory (RAM/FLASH) blocks can be moved to PAGE1 for data allocation */
/* BEGIN is used for the "boot to Flash" bootloader mode */

BEGIN : origin = 0x080000, length = 0x000002
//RAMLS0 : origin = 0x008000, length = 0x000800
//RAMLS1 : origin = 0x008800, length = 0x000800
//RAMLS2 : origin = 0x009000, length = 0x000800
//RAMLS3 : origin = 0x009800, length = 0x000800
//RAMLS4 : origin = 0x00A000, length = 0x000800
RAMLS : origin = 0x008000, length = 0x002800
RESET : origin = 0x3FFFC0, length = 0x000002

/* Flash sectors */

FLASHA : origin = 0x080002, length = 0x001FFE /* on-chip Flash */
PROG : origin = 0x082000, length = 0x006000 /* Program code - unified flash*/
//FLASHB : origin = 0x082000, length = 0x002000 /* on-chip Flash */
//FLASHC : origin = 0x084000, length = 0x002000 /* on-chip Flash */
//FLASHD : origin = 0x086000, length = 0x002000 /* on-chip Flash */
FLASHE : origin = 0x088000, length = 0x008000 /* on-chip Flash */
FLASHF : origin = 0x090000, length = 0x008000 /* on-chip Flash */
FLASHG : origin = 0x098000, length = 0x008000 /* on-chip Flash */
FLASHH : origin = 0x0A0000, length = 0x008000 /* on-chip Flash */
FLASHI : origin = 0x0A8000, length = 0x008000 /* on-chip Flash */
FLASHJ : origin = 0x0B0000, length = 0x008000 /* on-chip Flash */
FLASHK : origin = 0x0B8000, length = 0x002000 /* on-chip Flash */

PAGE 1 : /* Data Memory */
/* Memory (RAM/FLASH) blocks can be moved to PAGE0 for program allocation */

BOOT_RSVD : origin = 0x000002, length = 0x000120 /* Part of M0, BOOT rom will use this for stack */
RAMM0 : origin = 0x000122, length = 0x0002DE
RAMM1 : origin = 0x000400, length = 0x000400 /* on-chip RAM block M1 */
RAMD0 : origin = 0x00B000, length = 0x000800
RAMD1 : origin = 0x00B800, length = 0x000800

RAMLS5 : origin = 0x00A800, length = 0x000800

RAMGS0 : origin = 0x00C000, length = 0x001000
RAMGS1 : origin = 0x00D000, length = 0x001000
RAMGS2 : origin = 0x00E000, length = 0x001000
RAMGS3 : origin = 0x00F000, length = 0x001000
RAMGS4 : origin = 0x010000, length = 0x001000
RAMGS5 : origin = 0x011000, length = 0x001000
RAMGS6 : origin = 0x012000, length = 0x001000
RAMGS7 : origin = 0x013000, length = 0x001000


FLASHL : origin = 0x0BA000, length = 0x002000 /* on-chip Flash */
FLASHM : origin = 0x0BC000, length = 0x002000 /* on-chip Flash */
FLASHN : origin = 0x0BE000, length = 0x002000 /* on-chip Flash */
}


SECTIONS
{
/* Allocate program areas: */
.cinit : > PROG PAGE = 0, ALIGN(4)
.pinit : > PROG, PAGE = 0, ALIGN(4)
.text : >> PROG PAGE = 0, ALIGN(4)
codestart : > BEGIN PAGE = 0, ALIGN(4)
ramfuncs : LOAD = PROG,
RUN = RAMLS,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
RUN_SIZE(_RamfuncsRunSize),
RUN_END(_RamfuncsRunEnd),
PAGE = 0, ALIGN(4)

/* Allocate uninitalized data sections: */
.stack : > RAMD0 PAGE = 1
.ebss : >> RAMGS6 | RAMGS7 PAGE = 1
.esysmem : >> RAMGS6 | RAMGS7 PAGE = 1

/* Initalized sections go in Flash */
.econst : >> PROG PAGE = 0, ALIGN(4)
.switch : > PROG PAGE = 0, ALIGN(4)

.reset : > RESET, PAGE = 0, TYPE = DSECT /* not used, */

ramgs0 : > RAMGS0, PAGE = 1
ramgs1 : > RAMGS1, PAGE = 1

/* The following section definition are for SDFM examples */
Filter1_RegsFile : > RAMGS1, PAGE = 1, fill=0x1111
Filter2_RegsFile : > RAMGS2, PAGE = 1, fill=0x2222
Filter3_RegsFile : > RAMGS3, PAGE = 1, fill=0x3333
Filter4_RegsFile : > RAMGS4, PAGE = 1, fill=0x4444
Difference_RegsFile : >RAMGS5, PAGE = 1, fill=0x3333

}