esp-idf/components/spi_flash/spi_flash_os_func_noos.c

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// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
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//
// 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
//
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// 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.
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#include <stdarg.h>
#include "sdkconfig.h"
#include "esp_flash.h"
#include "esp_attr.h"
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#ifdef CONFIG_IDF_TARGET_ESP32
#include "esp32/rom/ets_sys.h"
#include "esp32/rom/cache.h"
#else
#include "esp32s2beta/rom/ets_sys.h"
#include "esp32s2beta/rom/cache.h"
#endif
static IRAM_ATTR esp_err_t start(void *arg)
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{
Cache_Read_Disable(0);
Cache_Read_Disable(1);
return ESP_OK;
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}
static IRAM_ATTR esp_err_t end(void *arg)
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{
Cache_Flush(0);
Cache_Flush(1);
Cache_Read_Enable(0);
Cache_Read_Enable(1);
return ESP_OK;
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}
static IRAM_ATTR esp_err_t delay_ms(void *arg, unsigned ms)
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{
ets_delay_us(1000 * ms);
return ESP_OK;
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}
const DRAM_ATTR esp_flash_os_functions_t esp_flash_noos_functions = {
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.start = start,
.end = end,
.delay_ms = delay_ms,
.region_protected = NULL,
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};
esp_err_t IRAM_ATTR esp_flash_app_disable_os_functions(esp_flash_t* chip)
{
chip->os_func = &esp_flash_noos_functions;
return ESP_OK;
}