RM44L920: CRC Question

Hello Kai,

Enclosed please find the CRC calculation in semi-CPU mode:


int main(void)
{
/* USER CODE BEGIN (3) */
uint32_t i, counter;
/* clear the ESM error manually */
esmREG->SR1[2] = 0x00000008U;
esmREG->SSR2 = 0x00000008U;
esmREG->EKR = 0x0000000AU;
esmREG->EKR = 0x00000005U;

//using CRC auto mode
crcInit();
_enable_IRQ();

/** - Reset PSA*/
crcREG->CTRL0 = (uint32)((uint32)1U << 0U)
| (uint32)((uint32)1U << 8U);

/** - Setup the Data capture mode to clear PSA counter */
crcREG->CTRL2 = 0x00000000;

/** - Pulling PSA out of reset */
crcREG->CTRL0=0x00000000U;

/** - Setup the Data trace for channel1 */
crcREG->CTRL2 |= (uint32)0U << 4U;

//change to CRC semi-CPU mode
crcREG->CTRL2 = (uint32)(CRC_SEMI_CPU); //semi-CPU mode is used

crcREG->SCOUNT_REG1= 0x1;
crcREG->PCOUNT_REG1= 0x20; /*32 double-words; Length of crc pattern defined in crc_pattern.c*/

crcDisableNotification(crcREG, 0x1F1F);
crcEnableNotification(crcREG, CRC_CH1_CC); //channel 1 compression complete interrupt

dma_config.SADD = (uint32_t)&CRC_Pattern[0];
dma_config.DADD = (uint32_t)&(crcREG->PSA_SIGREGL1 );
dma_config.CHCTRL = 0;
dma_config.FRCNT = 0x20; //0x20, 64-bit, length of crc pattern
dma_config.ELCNT = 1;

dma_config.ELDOFFSET = 0;
dma_config.ELSOFFSET = 0;
dma_config.FRDOFFSET = 0;
dma_config.FRSOFFSET = 0;
dma_config.PORTASGN = 4;
dma_config.RDSIZE = ACCESS_64_BIT;
dma_config.WRSIZE = ACCESS_64_BIT;
dma_config.TTYPE = BLOCK_TRANSFER;
dma_config.ADDMODERD = ADDR_INC1;
dma_config.ADDMODEWR = ADDR_FIXED;
dma_config.AUTOINIT = AUTOINIT_OFF;

// setting dma control packets for receive
dmaSetCtrlPacket(DMA_CH0, dma_config);
dmaReqAssign(DMA_CH0, 26); //DMA request line 26, CRC1 channel0
dmaSetChEnable(DMA_CH0, DMA_SW);

dmaEnable();

//delay
for(i=0; i<0x100000; i++);

if ((CRC_Test[0] == CRC_Ref[0]) && (CRC_Test[1] == CRC_Ref[1]))
{
CRC_Error = 0;
} else{
CRC_Error = 1;
}

while(1);
/* USER CODE END */

return 0;
}