| #ifndef __ALT_AVALON_SPI_H__ |
| #define __ALT_AVALON_SPI_H__ |
| |
| /****************************************************************************** |
| * * |
| * License Agreement * |
| * * |
| * Copyright (c) 2003 Altera Corporation, San Jose, California, USA. * |
| * All rights reserved. * |
| * * |
| * Permission is hereby granted, free of charge, to any person obtaining a * |
| * copy of this software and associated documentation files (the "Software"), * |
| * to deal in the Software without restriction, including without limitation * |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, * |
| * and/or sell copies of the Software, and to permit persons to whom the * |
| * Software is furnished to do so, subject to the following conditions: * |
| * * |
| * The above copyright notice and this permission notice shall be included in * |
| * all copies or substantial portions of the Software. * |
| * * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * |
| * DEALINGS IN THE SOFTWARE. * |
| * * |
| * * |
| ******************************************************************************/ |
| #include <stddef.h> |
| |
| #include "alt_types.h" |
| |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif /* __cplusplus */ |
| |
| /* |
| * Macros used by alt_sys_init |
| */ |
| |
| #define ALTERA_AVALON_SPI_INSTANCE(name, device) extern int alt_no_storage |
| #define ALTERA_AVALON_SPI_INIT(name, device) while (0) |
| |
| /* |
| * Use this function to perform one SPI access on your target. 'base' should |
| * be the base address of your SPI peripheral, while 'slave' indicates which |
| * bit in the slave select register should be set. |
| */ |
| |
| /* If you need to make multiple accesses to the same slave then you should |
| * set the merge bit in the flags for all of them except the first. |
| */ |
| #define ALT_AVALON_SPI_COMMAND_MERGE (0x01) |
| |
| /* |
| * If you need the slave select line to be toggled between words then you |
| * should set the toggle bit in the flag. |
| */ |
| #define ALT_AVALON_SPI_COMMAND_TOGGLE_SS_N (0x02) |
| |
| |
| int alt_avalon_spi_command(alt_u32 base, alt_u32 slave, |
| alt_u32 write_length, const alt_u8 * write_data, |
| alt_u32 read_length, alt_u8 * read_data, |
| alt_u32 flags); |
| |
| #ifdef __cplusplus |
| } |
| #endif /* __cplusplus */ |
| |
| #endif /* __ALT_AVALON_SPI_H__ */ |