52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
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// Copyright 2017 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdarg.h>
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#include "spi_flash_lowlevel_driver.h"
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#include "rom/ets_sys.h"
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#include "rom/cache.h"
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#include "esp_attr.h"
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#include "esp_spi_flash.h"
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static esp_flash_err_t start(const esp_flash_chip_t *chip)
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{
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if (chip->spi == &SPI1) {
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Cache_Read_Disable(0);
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Cache_Read_Disable(1);
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}
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return FLASH_OK;
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}
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static esp_flash_err_t end(const esp_flash_chip_t *chip)
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{
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if (chip->spi == &SPI1) {
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Cache_Flush(0);
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Cache_Flush(1);
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Cache_Read_Enable(0);
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Cache_Read_Enable(1);
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}
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return FLASH_OK;
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}
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static esp_flash_err_t delay_ms(unsigned ms)
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{
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ets_delay_us(1000 * ms);
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return FLASH_OK;
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}
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const esp_flash_os_functions_t esp_flash_noos_functions = {
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.start = start,
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.end = end,
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.delay_ms = delay_ms,
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};
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