stm_flash.cr &= ~(1 << STM_FLASH_CR_PG);
}
+static bool
+ao_storage_is_erased(uint32_t pos)
+{
+ uint16_t *flash = _ao_flash_addr(pos);
+ uint32_t i = ao_storage_block >> 1;
+
+ while (i--)
+ if (*flash++ != 0xffff)
+ return false;
+ return true;
+}
+
uint8_t
ao_storage_erase(uint32_t pos)
{
+ if (ao_storage_is_erased(pos))
+ return 1;
+
ao_arch_block_interrupts();
ao_flash_unlock();
}
uint8_t
-ao_storage_device_read(uint32_t pos, __xdata void *d, uint16_t len) __reentrant
+ao_storage_device_read(uint32_t pos, void *d, uint16_t len)
{
if (pos >= ao_storage_total || pos + len > ao_storage_total)
return 0;
}
void
-ao_storage_flush(void) __reentrant
+ao_storage_flush(void)
{
}
}
void
-ao_storage_device_info(void) __reentrant
+ao_storage_device_info(void)
{
printf ("Using internal flash, page %d bytes, total %d bytes\n",
ao_storage_block, ao_storage_total);