cc3100: Porting to STM32F0 (STM32F072-Nucleo-Board), Hard Fault Error

Hi,

I have a problem using the STM32F4 Port on my STM32F0 uC. I don't know if this is the correct forum for my problem.

This is a part of the example project "spi-debug-tool". The code schows test for SPI Read:

  /*Sync pattern found. If needed, complete number of read bytes to multiple of 4 (protocol align) */
    SyncCnt %= SYNC_PATTERN_LEN;
 
    if(SyncCnt > 0)                                                                                                            //debugger SyncCnt = 3
    {
        *(_u32 *)&pBuf[0] = *(_u32 *)&pBuf[4];
         sl_IfRead(FD, &pBuf[SYNC_PATTERN_LEN - SyncCnt], SyncCnt);              //<<---Hard Fault Error
    }
    else
    {
        sl_IfRead(FD, &pBuf[0], 4);
    }

If i change the SPI-Read sequence to the following code:

char testbuf[8];

int index = SYNC_PATTERN_LEN - SyncCnt;                //debugger : index = 1      and SyncCnt =3
 sl_IfRead(FD, testbuf, SyncCnt);
 for (int i = 0; i < SyncCnt; i++)
            pBuf[i + index] = testbuf[i];

....... the Hard Fault Error disappears and the spi-debug test ends successfully!

What could be the reason for this strange behaviour. I fear that I will get these problems using the more complex examples like mqtt.

Any help is very appreciated

Otto Parzhuber

Munich Univ. of Applied Sciences