text: /* mbed Microcontroller Library
   * Copyright (c) 2017 ARM Limited
   *
   * 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
   *
   *     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.
   */
  
  #include "device.h"
  #include "flash_api.h"
  #include "drivers/peripheral/flash/cy_flash.h"
  
  #if DEVICE_FLASH
  
  int32_t flash_init(flash_t *obj)
  {
      (void)(obj);
      return 0;
  }
  
  int32_t flash_free(flash_t *obj)
  {
      (void)(obj);
      return 0;
  }
  
  int32_t flash_erase_sector(flash_t *obj, uint32_t address)
  {
      (void)(obj);
      int32_t status = 0;
      if (Cy_Flash_EraseRow(address) != CY_FLASH_DRV_SUCCESS) {
          status = -1;
      }
  
      return status;
  }
  
  int32_t flash_program_page(flash_t *obj, uint32_t address, const uint8_t *data, uint32_t size)
  {
      (void)(obj);
      int32_t status = 0;
      static uint8_t prog_buf[CY_FLASH_SIZEOF_ROW];
      while (size) {
          uint32_t offset = address % CY_FLASH_SIZEOF_ROW;
          uint32_t chunk_size;
          if (offset + size > CY_FLASH_SIZEOF_ROW) {
              chunk_size = CY_FLASH_SIZEOF_ROW - offset;
          } else {
              chunk_size = size;
          }
          uint32_t row_address = address / CY_FLASH_SIZEOF_ROW * CY_FLASH_SIZEOF_ROW;
          memcpy(prog_buf, (const void *)row_address, CY_FLASH_SIZEOF_ROW);
          memcpy(prog_buf + offset, data, chunk_size);
  
          if (Cy_Flash_ProgramRow(row_address, (const uint32_t *)prog_buf) != CY_FLASH_DRV_SUCCESS) {
              status = -1;
          }
          address += chunk_size;
          size -= chunk_size;
      }
  
      Cy_SysLib_ClearFlashCacheAndBuffer();
      return status;
  }
  
  uint32_t flash_get_sector_size(const flash_t *obj, uint32_t address)
  {
      (void)(obj);
      if ((address >= CY_FLASH_BASE) && (address < CY_FLASH_BASE + CY_FLASH_SIZE)) {
          return CY_FLASH_SIZEOF_ROW;
      }
  
      return MBED_FLASH_INVALID_SIZE;
  }
  
  uint32_t flash_get_page_size(const flash_t *obj)
  {
      (void)(obj);
      return CY_FLASH_EFFECTIVE_PAGE_SIZE;
  }
  
  uint32_t flash_get_start_address(const flash_t *obj)
  {
      (void)(obj);
      return CY_FLASH_BASE;
  }
  
  uint32_t flash_get_size(const flash_t *obj)
  {
      (void)(obj);
      return CY_FLASH_SIZE;
  }
  
  uint8_t flash_get_erase_value(const flash_t *obj)
  {
      (void)obj;
  
      return 0x00;
  }
  
  #endif // DEVICE_FLASH
  