A library with drivers for different peripherals on the LPC4088 QuickStart Board or related add-on boards.
Fork of EALib by
sdram.h
- Committer:
- embeddedartists
- Date:
- 2014-01-30
- Revision:
- 12:15597e45eea0
- Parent:
- 0:0fdadbc3d852
File content as of revision 12:15597e45eea0:
/* * Copyright 2013 Embedded Artists AB * * 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. */ #ifndef __SDRAM_H #define __SDRAM_H #include "stdint.h" /* * These timing parameters are based on the EMC clock * there is no way of ensuring what the EMC clock frequency is * without severely bloating the code * ENSURE THAT THE EMC clock is one of these values */ #define SDRAM_SPEED_48 0 #define SDRAM_SPEED_50 1 #define SDRAM_SPEED_60 2 #define SDRAM_SPEED_72 3 #define SDRAM_SPEED_80 4 #define SDRAM_SPEED SDRAM_SPEED_60 #define SDRAM_CONFIG_32BIT #define SDRAM_SIZE 0x2000000 #define SDRAM_BASE 0xA0000000 /*CS0*/ /* Initializes the SDRAM. * * The entire SDRAM will be made available to malloc per default. * * Note that this functions is called internally if malloc requests * memory from SDRAM and that hasn't been disabled with a call to * sdram_disableMallocSdram(). * * @returns 0 on success, 1 on failure */ uint32_t sdram_init(); /* Prevents malloc from using SDRAM. * * This function must be called before the first allocation that * would have been in SDRAM. If a big allocation has already been * made then this call will do nothing as the SDRAM will have been * initialized and all SDRAM given to malloc. */ void sdram_disableMallocSdram(); #endif /* end __SDRAM_H */ /**************************************************************************** ** End Of File *****************************************************************************/