1 // Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 #pragma once 15 16 #ifdef __cplusplus 17 extern "C" { 18 #endif 19 20 /** @brief Enable Quad I/O mode in bootloader (if configured) 21 * 22 * Queries attached SPI flash ID and sends correct SPI flash 23 * commands to enable QIO or QOUT mode, then enables this mode. 24 */ 25 void bootloader_enable_qio_mode(void); 26 27 /** 28 * @brief Read flash ID by sending 0x9F command 29 * @return flash raw ID 30 * mfg_id = (ID >> 16) & 0xFF; 31 flash_id = ID & 0xffff; 32 */ 33 uint32_t bootloader_read_flash_id(void); 34 35 #ifdef __cplusplus 36 } 37 #endif 38