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cparsingpointersuint8t

Why does my data is cut when I have 0x00?

I want to copy an uint8_t array to a uint8_t pointer

uint8_t temp_uint8_array[] = {0x15, 0x25, 0x32, 0x00, 0x52, 0xFD};

uint8_t* Buffer = temp_uint8_array;

And now :

Buffer = {0x15, 0x25, 0x32};

So I understand that my data is cut because of 0x00, is there a solution ?

As I have access to the size of tha datas to be copied I tried to use

memcpy(Buffer, &temp_uint8_array, local_length);

But it does not work

Solution

  • The memcpy isn’t correct :

    memcpy(Buffer, &temp_uint8_array, …

    As temp_uint8_array is an array then you should not prefix it with & :

    memcpy(Buffer, temp_uint8_array,…

    Buffer is pointing to temp_iint8_array so the memcpy does nothing but erasing bytes in the same memory location. You IDE might consider that uint8 array may be handled as char string and display contents until 0x00.