esp-idf/components/spi_flash/spi_flash_chip_th.c

/*
 * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <stdlib.h>
#include "spi_flash_chip_generic.h"
#include "spi_flash_defs.h"

esp_err_t spi_flash_chip_th_probe(esp_flash_t *chip, uint32_t flash_id)
{
    /* Check manufacturer and product IDs match our desired masks */
    const uint8_t MFG_ID = 0xcd;
    if (flash_id >> 16 != MFG_ID) {
        return ESP_ERR_NOT_FOUND;
    }

    const uint16_t FLASH_ID_MASK = 0xFF00;
    const uint16_t FLASH_ID_VALUE = 0x6000;
    if ((flash_id & FLASH_ID_MASK) != FLASH_ID_VALUE) {
        return ESP_ERR_NOT_FOUND;
    }

    return ESP_OK;
}

spi_flash_caps_t spi_flash_chip_th_get_caps(esp_flash_t *chip)
{
    spi_flash_caps_t caps_flags = 0;
    // 32-bit-address flash is not supported
    // flash-suspend is not supported
    // flash read unique id.
    caps_flags |= SPI_FLASH_CHIP_CAP_UNIQUE_ID;
    return caps_flags;
}

static const char chip_name[] = "th";

// The th chip can use the functions for generic chips except from set read mode and probe,
// So we only replace these two functions.
const spi_flash_chip_t esp_flash_chip_th = {
    .name = chip_name,
    .timeout = &spi_flash_chip_generic_timeout,
    .probe = spi_flash_chip_th_probe,
    .reset = spi_flash_chip_generic_reset,
    .detect_size = spi_flash_chip_generic_detect_size,
    .erase_chip = spi_flash_chip_generic_erase_chip,
    .erase_sector = spi_flash_chip_generic_erase_sector,
    .erase_block = spi_flash_chip_generic_erase_block,
    .sector_size = 4 * 1024,
    .block_erase_size = 64 * 1024,

    .get_chip_write_protect = spi_flash_chip_generic_get_write_protect,
    .set_chip_write_protect = spi_flash_chip_generic_set_write_protect,

    .num_protectable_regions = 0,
    .protectable_regions = NULL,
    .get_protected_regions = NULL,
    .set_protected_regions = NULL,

    .read = spi_flash_chip_generic_read,
    .write = spi_flash_chip_generic_write,
    .program_page = spi_flash_chip_generic_page_program,
    .page_size = 256,
    .write_encrypted = spi_flash_chip_generic_write_encrypted,

    .wait_idle = spi_flash_chip_generic_wait_idle,
    .set_io_mode = spi_flash_chip_generic_set_io_mode,
    .get_io_mode = spi_flash_chip_generic_get_io_mode,

    .read_reg = spi_flash_chip_generic_read_reg,
    .yield = spi_flash_chip_generic_yield,
    .sus_setup = spi_flash_chip_generic_suspend_cmd_conf,
    .read_unique_id = spi_flash_chip_generic_read_unique_id,
    .get_chip_caps = spi_flash_chip_th_get_caps,
    .config_host_io_mode = spi_flash_chip_generic_config_host_io_mode,
};