235 lines
5.9 KiB
C
Executable file
235 lines
5.9 KiB
C
Executable file
/* This source file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */
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/*This file is prepared for Doxygen automatic documentation generation.*/
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/*! \file *********************************************************************
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*
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* \brief CTRL_ACCESS interface for the AT45DBX data flash controller.
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*
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* - Compiler: IAR EWAVR32 and GNU GCC for AVR32
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* - Supported devices: All AVR32 devices with an SPI module can be used.
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* - AppNote:
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*
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* \author Atmel Corporation: http://www.atmel.com \n
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* Support and FAQ: http://support.atmel.no/
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*
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******************************************************************************/
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/* Copyright (c) 2009 Atmel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of Atmel may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* 4. This software may only be redistributed and used in connection with an Atmel
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* AVR product.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
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*
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*/
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//_____ I N C L U D E S ___________________________________________________
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#include "conf_access.h"
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#if AT45DBX_MEM == ENABLE
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#include "conf_at45dbx.h"
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#include "at45dbx.h"
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#include "at45dbx_mem.h"
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//_____ D E F I N I T I O N S ______________________________________________
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//! Whether to detect write accesses to the memory.
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#define AT45DBX_MEM_TEST_CHANGE_STATE ENABLED
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#if (ACCESS_USB == ENABLED || ACCESS_MEM_TO_RAM == ENABLED) && AT45DBX_MEM_TEST_CHANGE_STATE == ENABLED
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//! Memory data modified flag.
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static volatile Bool s_b_data_modify = FALSE;
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#endif
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/*! \name Control Interface
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*/
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//! @{
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Ctrl_status at45dbx_test_unit_ready(void)
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{
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return (at45dbx_mem_check() == OK) ? CTRL_GOOD : CTRL_NO_PRESENT;
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}
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Ctrl_status at45dbx_read_capacity(U32 *u32_nb_sector)
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{
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*u32_nb_sector = (AT45DBX_MEM_CNT << (AT45DBX_MEM_SIZE - AT45DBX_SECTOR_BITS)) - 1;
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return CTRL_GOOD;
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}
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Bool at45dbx_wr_protect(void)
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{
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return FALSE;
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}
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Bool at45dbx_removal(void)
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{
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return FALSE;
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}
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//! @}
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#if ACCESS_USB == ENABLED
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#include "usb_drv.h"
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#include "scsi_decoder.h"
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/*! \name MEM <-> USB Interface
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*/
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//! @{
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Ctrl_status at45dbx_usb_read_10(U32 addr, U16 nb_sector)
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{
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if (addr + nb_sector > AT45DBX_MEM_CNT << (AT45DBX_MEM_SIZE - AT45DBX_SECTOR_BITS)) return CTRL_FAIL;
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at45dbx_read_open(addr);
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at45dbx_read_multiple_sector(nb_sector);
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at45dbx_read_close();
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return CTRL_GOOD;
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}
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void at45dbx_read_multiple_sector_callback(const void *psector)
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{
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U16 data_to_transfer = AT45DBX_SECTOR_SIZE;
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// Transfer read sector to the USB interface.
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while (data_to_transfer)
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{
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while (!Is_usb_in_ready(g_scsi_ep_ms_in))
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{
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if(!Is_usb_endpoint_enabled(g_scsi_ep_ms_in))
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return; // USB Reset
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}
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Usb_reset_endpoint_fifo_access(g_scsi_ep_ms_in);
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data_to_transfer = usb_write_ep_txpacket(g_scsi_ep_ms_in, psector,
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data_to_transfer, &psector);
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Usb_ack_in_ready_send(g_scsi_ep_ms_in);
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}
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}
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Ctrl_status at45dbx_usb_write_10(U32 addr, U16 nb_sector)
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{
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if (addr + nb_sector > AT45DBX_MEM_CNT << (AT45DBX_MEM_SIZE - AT45DBX_SECTOR_BITS)) return CTRL_FAIL;
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#if AT45DBX_MEM_TEST_CHANGE_STATE == ENABLED
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if (nb_sector) s_b_data_modify = TRUE;
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#endif
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at45dbx_write_open(addr);
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at45dbx_write_multiple_sector(nb_sector);
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at45dbx_write_close();
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return CTRL_GOOD;
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}
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void at45dbx_write_multiple_sector_callback(void *psector)
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{
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U16 data_to_transfer = AT45DBX_SECTOR_SIZE;
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// Transfer sector to write from the USB interface.
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while (data_to_transfer)
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{
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while (!Is_usb_out_received(g_scsi_ep_ms_out))
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{
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if(!Is_usb_endpoint_enabled(g_scsi_ep_ms_out))
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return; // USB Reset
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}
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Usb_reset_endpoint_fifo_access(g_scsi_ep_ms_out);
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data_to_transfer = usb_read_ep_rxpacket(g_scsi_ep_ms_out, psector,
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data_to_transfer, &psector);
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Usb_ack_out_received_free(g_scsi_ep_ms_out);
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}
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}
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//! @}
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#endif // ACCESS_USB == ENABLED
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#if ACCESS_MEM_TO_RAM == ENABLED
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/*! \name MEM <-> RAM Interface
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*/
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//! @{
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Ctrl_status at45dbx_df_2_ram(U32 addr, void *ram)
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{
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if (addr + 1 > AT45DBX_MEM_CNT << (AT45DBX_MEM_SIZE - AT45DBX_SECTOR_BITS)) return CTRL_FAIL;
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at45dbx_read_open(addr);
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at45dbx_read_sector_2_ram(ram);
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at45dbx_read_close();
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return CTRL_GOOD;
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}
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Ctrl_status at45dbx_ram_2_df(U32 addr, const void *ram)
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{
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if (addr + 1 > AT45DBX_MEM_CNT << (AT45DBX_MEM_SIZE - AT45DBX_SECTOR_BITS)) return CTRL_FAIL;
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#if AT45DBX_MEM_TEST_CHANGE_STATE == ENABLED
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s_b_data_modify = TRUE;
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#endif
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at45dbx_write_open(addr);
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at45dbx_write_sector_from_ram(ram);
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at45dbx_write_close();
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return CTRL_GOOD;
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}
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//! @}
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#endif // ACCESS_MEM_TO_RAM == ENABLED
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#endif // AT45DBX_MEM == ENABLE
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