Hi all,
I am trying to write to a flash memory (S25FL064L) via QSPI, I have enabled SMM (serial memory mode) in the QSPI module. I use XIP (execute-in-place) example from Atmel Start.
I can read from it just fine, but when I try to write, my logic analyser shows that the SAME70 is appending at least 3 bytes per byte to the buffer, e.g. if I write 0x30, it will output 0x30, 0x20, 0xFF, 0xFF.
I tried to change the pointer type from uint8_t to uint32_t, it just made the matter worse.
The library access the flash memory via location 0x80000000 (SMM). Seems like this block from hpl_qspi.c is causing problem (dst is 0x80000000):
/**
* \brief Memory copy function.
*
* \param dst Pointer to destination buffer.
* \param src Pointer to source buffer.
* \param count Bytes to be copied.
*/
static void _qspi_memcpy(uint8_t *dst, uint8_t *src, uint32_t count)
{
while (count--) {
*dst++ = *src++;
}
}
I have read an appnote: https://www.microchip.com/wwwApp...
It did mention about strongly ordered memory, but, I am not sure how to enable it using the APIs from Atmel Start.
Any ideas?
