1 // Copyright 2015-2019 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 
15 #pragma once
16 
17 #include <stdint.h>
18 #include "esp_flash.h"
19 #include "spi_flash_chip_driver.h"
20 
21 
22 /**
23  * GD (GigaDevice) SPI flash chip_drv, uses all the above functions for its operations. In
24  * default autodetection, this is used as a catchall if a more specific chip_drv
25  * is not found.
26  *
27  * Note that this is for GD chips with product ID 40H (GD25Q) and 60H (GD25LQ). The chip diver uses
28  * different commands to write the SR2 register according to the chip ID. For GD25Q40 - GD25Q16
29  * chips, and GD25LQ chips, WRSR (01H) command is used; while WRSR2 (31H) is used for GD25Q32 -
30  * GD25Q127 chips.
31  */
32 esp_err_t spi_flash_chip_gd_probe(esp_flash_t *chip, uint32_t flash_id);
33 esp_err_t spi_flash_chip_gd_set_io_mode(esp_flash_t *chip);
34 esp_err_t spi_flash_chip_gd_get_io_mode(esp_flash_t *chip, esp_flash_io_mode_t* out_io_mode);
35 
36 extern const spi_flash_chip_t esp_flash_chip_gd;
37