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STM32F4DISCOVERY CRC ISSUE

Question asked by deuf.john on May 25, 2015
Latest reply on May 25, 2015 by Clive One
Hi,

I'm working on the stm32f4discovery board, with the last version of keil µvision. I used library from stm32Cube.

I have problem with CRC peripheral : I can't get a right result.

My initialize code, before my infinite loop :

hcrc.Instance = CRC;
HAL_CRC_Init(&hcrc);
__HAL_RCC_CRC_CLK_ENABLE();

When i use CRC :

uint8_t data[64];
 
/*for test only*/
data[0]=0x1a;
data[1]=0x03;
data[2]=0x31;
data[3]=0x32;
data[4]=0x33;
     
__HAL_CRC_DR_RESET(&hcrc);
CRCvalue = HAL_CRC_Calculate(&hcrc, (uint32_t*) data, 5);

When I execute this code, i'm waiting CRCvalue = 89CE6D10 (value calculate by crc online tools, and i have the same result on my computer with my own program) but the value of my calculate CRC is : CRCvalue = 909801CA

What am I doing wrong ?

Thanks for your help,

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