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Hi, I'm using the DSK6711, Revision 2. I'm trying to load a dsp program to my board using a windows app. I've noticed though that every 10 times or so my program doesn't run correctly. What I have is a dsp program which outputs a sine wave, which is in turn loaded to the dsp board by my windows application. When I run this application, I mostly get a sine wave from my codec, but sometimes I get a DC level, or noise (noticed that only one time), but mostly when it fails I get 0 Volts from the codec output. A few times also, one or more of the dsp leds switched on. When this failure occurs, I simply run my application again (without having to power cylce) and it works again for another few attempts. This code works fine all of the time when I load it with CCS instead of my windows application. Have you any idea as to why this would be happening? Do the api calls (such as dsk6x_open) return on completion, or do you put delays after them? None of the api function calls are failing (well they dont ruturn any error anyway). My api application is simply this - char *sBoardFile = "ti_ppdsk.cfg"; pBoardFile = fopen( sBoardFile, "r" ); if ( pBoardFile == NULL ) exit(1); else fclose(pBoardFile); if ( !dsk6x_open(sBoardFile,&hBd) ) exit(1); if ( !dsk6x_reset_dsp(hBd,0,1) ) exit(2); if ( !dsk6x_hpi_open(hBd)) exit(3); /* Setup the EMIF */ /*My board is Revision 2 according to the GEL file */ { const int nNoRegisters = 9; int nIndex; char *arrEMIFCfgName[]= { "GCTL", // Global Control Reg "CE1", // CE1 Space Control Reg "CE0", // CE0 Space Control Reg "CE2", // CE2 Space Control Reg "CE3", // CE3 Space Control Reg "SDRAMCTL", // SDRAM Control Reg "SDRAMTIMING", // SDRAM Timing Reg "SDRAMEXT", // SDRAM Extension Reg "L2CFG"}; // L2 Cache Config Reg unsigned long arrEMIFCfgAddr[]= { 0x01800000, // Global Control Reg 0x01800004, // CE1 Space Control Reg 0x01800008, // CE0 Space Control Reg 0x01800010, // CE2 Space Control Reg 0x01800014, // CE3 Space Control Reg 0x01800018, // SDRAM Control Reg 0x0180001C, // SDRAM Timing Reg 0x01800020, // SDRAM Extension Reg 0x01840000}; // L2 Cache Config Reg // I took these from my GEL file - unsigned long arrEMIFCfgValue[]= { 0x00003300, // Global Control Reg 0xFFFFFF23, // CE1 Space Control Reg 0x00000030, // CE0 Space Control Reg 0xFFFFFF23, // CE2 Space Control Reg 0xFFFFFF23, // CE3 Space Control Reg 0x57116000, // SDRAM Control Reg 0x0000061A, // SDRAM Timing Reg 0x00054529, // SDRAM Extension Reg 0x00000003}; // L2 Cache Config Reg // Loop through all EMIF registers for (nIndex = 0; nIndex < nNoRegisters; nIndex++) { // Write configuration value to register unsigned long ulWriteLength = sizeof (unsigned long); if (!dsk6x_hpi_write (hBd, &arrEMIFCfgValue[nIndex], &ulWriteLength, arrEMIFCfgAddr[nIndex])) { printf("Failed configuring EMIF (%d)\n", nIndex); exit(4); } } } if (dsk6x_coff_load(hBd,coffNam,bVerbose,bClr,bDump)) exit(5); if (!dsk6x_hpi_generate_int(hBd)) exit(6); // Should see sine at this point getchar(); if ( !dsk6x_reset_dsp(hBd,0,1) ) exit(7); if (!dsk6x_hpi_close(hBd)) exit(8); if (!dsk6x_close(hBd)) exit(9); Anyway, if you have any notion as to my new problem please let me know, Thanks, Aine. |
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HPI fails on Occasion
Started by ●September 6, 2003
Reply by ●September 7, 20032003-09-07
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Aine,
I have used the windows interface only ocaisionally and have never had any
problems - once I got my first program running [:-)
It sounds like something is going wrong during the load. Either the
emif is not getting initialized correctly or one or more memory writes are
failing.
Some thoughts for troubleshooting...
Load some code into internal RAM, execute it first, have it checksum your
SDRAM code and light a pass or fail LED.
mikedunn
aine_canby <a...@yahoo.com> wrote: Hi, |
