/**
* Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
// Obliterate the contents of flash. This is a silly thing to do if you are
// trying to run this program from flash, so you should really load and run
// directly from SRAM. You can enable RAM-only builds for all targets by doing:
//
// cmake -DPICO_NO_FLASH=1 ..
//
// in your build directory. We've also forced no-flash builds for this app in
// particular by adding:
//
// pico_set_binary_type(flash_nuke no_flash)
//
// To the CMakeLists.txt app for this file. Just to be sure, we can check the
// define:
#if !PICO_NO_FLASH && !PICO_COPY_TO_RAM
#error "This example must be built to run from SRAM!"
#endif
#include "pico/stdlib.h"
#include "hardware/flash.h"
#include "pico/bootrom.h"
int main() {
uint flash_size_bytes;
#ifndef PICO_FLASH_SIZE_BYTES
#warning PICO_FLASH_SIZE_BYTES not set, assuming 16M
flash_size_bytes = 16 * 1024 * 1024;
#else
flash_size_bytes = PICO_FLASH_SIZE_BYTES;
#endif
flash_range_erase(0, flash_size_bytes);
// Leave an eyecatcher pattern in the first page of flash so picotool can
// more easily check the size:
static const uint8_t eyecatcher[FLASH_PAGE_SIZE] = "NUKE";
flash_range_program(0, eyecatcher, FLASH_PAGE_SIZE);
#ifdef PICO_DEFAULT_LED_PIN
// Flash LED for success
gpio_init(PICO_DEFAULT_LED_PIN);
gpio_set_dir(PICO_DEFAULT_LED_PIN, GPIO_OUT);
for (int i = 0; i < 3; ++i) {
gpio_put(PICO_DEFAULT_LED_PIN, 1);
sleep_ms(100);
gpio_put(PICO_DEFAULT_LED_PIN, 0);
sleep_ms(100);
}
#endif
// Pop back up as an MSD drive
reset_usb_boot(0, 0);
}
