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TMS320F28386D: Calculate CRC-32 with GCRC module

Jim Yang
Prodigy 10 points
Part Number: TMS320F28386D


Hello,

I used to to calculate CRC-32 with VCRC module on F283DD, and the parameters are set as follows.

VCRC parameter setup

Poly 0x04C11DB7
seedValue 0xFFFFFFFF
parity Even
run function CRC_run32BitPoly1Reflected(poly = 0x04c11db7)

Specification of CRC-32

Poly 0x04C11DB7
Size 32
Initial value 0xFFFFFFFF
RefIn True
RefOut True
XorOut 0xFFFFFFF

Now I try to use the GCRC module to calculate CRC-32 on the CM. i have selected the most reasonable parameter settings (such as the code in the attachment file) according to multiple tests, but his calculation result still does not match the CRC value calculated by the CRC-32 specification.

Fullscreen 7140.main_cm.c Download 
/**
 * main.c
 */
#include "cm.h"

uint32_t CRCResult1 = 0;
uint32_t CRCGolden = 0x880D622E; // calculate by CRC-32 calculator http://www.sunshine2k.de/coding/javascript/crc/crc_js.html

void main(void)
{
	CM_init();

    uint32_t    poly        = 0x4C11DB7;
    uint32_t    polysize    = 32;
    uint32_t    endianness  = GCRC_ENDIANNESS_BIG;
    uint32_t    dataType    = GCRC_DATATYPE_8BIT;
    bool        bitRev      = true;
    uint32_t    dataMask    = 0;

    GCRC_setDataType( GCRC_BASE, dataType );
	GCRC_setDataEndianness( GCRC_BASE, endianness );
	GCRC_setDataMask( GCRC_BASE, dataMask );
	GCRC_enableBitReverse( GCRC_BASE, bitRev );

	//
	// Set Seed value
	//
	GCRC_setPolynomial( GCRC_BASE, 0x00000001, polysize );
	GCRC_setSeedValue( GCRC_BASE, 0xFFFFFFFF );
	GCRC_setPolynomial( GCRC_BASE, poly, polysize );

	//
	// Write data to the CRC engine
	//
	GCRC_writeData( GCRC_BASE, 0x11, GCRC_DATATYPE_8BIT );
	GCRC_writeData( GCRC_BASE, 0x22, GCRC_DATATYPE_8BIT );
	GCRC_writeData( GCRC_BASE, 0x33, GCRC_DATATYPE_8BIT );
	GCRC_writeData( GCRC_BASE, 0x44, GCRC_DATATYPE_8BIT );

	//
	// Read the CRC result
	//
	CRCResult1 =  GCRC_readResult(GCRC_BASE);

	//
	// Check for computed crc values
	//
	if((crcResult1 != crcGolden)
	{
	    //
	    // Error. The computed crc does not match the golden value
	    //
	    __asm(" bkpt #0");
	}
	
	// IDLE loop. Just sit and loop forever (optional)
	while( 1 ) {}
}

Note. The setting method of the seed refers to the conclusion CCS/TMS320F28388D: GCRC module seed issue

Are there any precautions for using GCRC that I have missed? Or can you give any suggestions on parameter settings?

thanks,
Jim