void EraseFlashBuffer(void)
{
/*Set the correct settings and store critical registers before NVM-workaround*/
#ifdef WORKAROUND
Prepare_to_Sleep();
#endif
/*Assembly "function" to erase flash buffer*/
nvm_flash_flush_buffer();
}
/**
* \brief Simulate corruption of a part of Flash
*
* This function simulates corruption of the Flash by modifying one of the
* strings in the error insertion menu. More specifically it replaces the
* "-- Error insertion --" menu title with "Out of cheese!". If called again,
* the original string is reverted.
*/
static void oven_classb_flash_corrupter(void)
{
/* Flash page base address of the menu title string */
flash_addr_t page_addr = ((uintptr_t)error_menu_title / FLASH_PAGE_SIZE)
* FLASH_PAGE_SIZE;
/* Address within the page */
uintptr_t string_addr = (uintptr_t)error_menu_title % FLASH_PAGE_SIZE;
/* New string that we will replace it with */
const char newstring[] = " Out of cheese! ";
const char oldstring[] = "-- Error insertion --";
/* Load page with strings from flash into our buffer */
nvm_flash_flush_buffer();
for (uint16_t addr = 0; addr < FLASH_PAGE_SIZE / 2; addr++) {
flash_scramble_buf[addr] = nvm_flash_read_word((addr * 2)
+ page_addr);
oven_wdt_periodic_reset();
}
/* Check which string is the current and change it accordingly */
if (strcmp((char *)flash_scramble_buf + string_addr, oldstring) == 0) {
strcpy((char *)flash_scramble_buf + string_addr, newstring);
} else {
strcpy((char *)flash_scramble_buf + string_addr, oldstring);
}
oven_wdt_periodic_reset();
/* Fill page buffer with our buffered data, then write it to flash */
for (uint16_t addr = 0; addr < FLASH_PAGE_SIZE / 2; addr++) {
nvm_flash_load_word_to_buffer(addr * 2,
flash_scramble_buf[addr]);
oven_wdt_periodic_reset();
}
nvm_flash_atomic_write_app_page(page_addr);
}