/* * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ #pragma once #ifdef __cplusplus extern "C" { #endif /** @brief Enable Quad I/O mode in bootloader (if configured) * * Queries attached SPI flash ID and sends correct SPI flash * commands to enable QIO or QOUT mode, then enables this mode. */ void bootloader_enable_qio_mode(void); /** * @brief Read flash ID by sending 0x9F command * @return flash raw ID * mfg_id = (ID >> 16) & 0xFF; flash_id = ID & 0xffff; */ uint32_t bootloader_read_flash_id(void); #ifdef __cplusplus } #endif