Dear all,
I had some trouble in the use of osal_snv_read/write. Since it looks like I cannot write attributes longer than 18 bytes, I had to modify the myProfile_WriteAttrCB functon in order to use the ATT_WritePrepareReq and the ATT_ExecuteWriteReq commands. I wanted to write my attribute (36 byte long) into the NV memory. Here is my code:
case MY_ATTRIBUTE_UUID:
// Validate the value
if ( (offset + len) > MY_LENGTH )
{
status = ATT_ERR_INVALID_VALUE_SIZE;
}
// Write the value
if ( status == SUCCESS )
{
int8 *pCurValue = (int8 *)pAttr->pValue;
for (uint8 i = 0; i < len; i++)
{
pCurValue[i + offset] = pValue[i];
}
VOID osal_snv_write(BLE_NVID_MY_PROFILE + offset, len, pValue);
notify = MY_PROFILE;
}
break;
As I told you before, MY_LENGTH is 36.
The strange thing is that if I want to read my 36 bytes in one shot I have some garbage (the first 18 bytes are correct, then I have 6 bytes of garbage and than I have the other bytes I wrote, for example if I wrote 36,35,34,....,1 I get 36,35,...18,X,X,X,X,X,X,17,...7). If I read first the first 18 bytes and then the second 18 byte I get the correct attribute. Here is the code:
CORRECT:
if (osal_snv_read( BLE_NVID_MY_PROFILE , 18*sizeof(int8), &myVector) == SUCCESS)
{
if (osal_snv_read( BLE_NVID_MY_PROFILE + 18, 18*sizeof(int8), &myVector[18] ) == SUCCESS)
{
MyProfile_SetParameter(MY_ATTRIBUTE, MY_LENGTH*sizeof(int8), &myVector);
}
}
WRONG:
if (osal_snv_read( BLE_NVID_MY_PROFILE , MY_LENGTH*sizeof(int8), &myVector) == SUCCESS)
{
MyProfile_SetParameter(MY_ATTRIBUTE, MY_LENGTH*sizeof(int8), &myVector);
}
Can anyone tell me why?
