esp-idf/components/bootloader_support/include_bootloader/flash_qio_mode.h

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#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();
#ifdef __cplusplus
}
#endif