Andy K / Mbed 2 deprecated SOWB

Satellite Observers Workbench. NOT yet complete, just published for forum posters to \"cherry pick\" pieces of code as requiered as an example.

Dependencies:   mbed

config/config.c@0:0a841b89d614, 2010-10-11 (annotated)

Committer:
AjK
Date:
Mon Oct 11 10:34:55 2010 +0000
Revision:
0:0a841b89d614
Totally Alpha quality as this project isn\t completed. Just publishing it as it answers many questions asked in the forums

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AjK 0:0a841b89d614 1 /****************************************************************************
AjK 0:0a841b89d614 2 * Copyright 2010 Andy Kirkham, Stellar Technologies Ltd
AjK 0:0a841b89d614 3 *
AjK 0:0a841b89d614 4 * This file is part of the Satellite Observers Workbench (SOWB).
AjK 0:0a841b89d614 5 *
AjK 0:0a841b89d614 6 * SOWB is free software: you can redistribute it and/or modify
AjK 0:0a841b89d614 7 * it under the terms of the GNU General Public License as published by
AjK 0:0a841b89d614 8 * the Free Software Foundation, either version 3 of the License, or
AjK 0:0a841b89d614 9 * (at your option) any later version.
AjK 0:0a841b89d614 10 *
AjK 0:0a841b89d614 11 * SOWB is distributed in the hope that it will be useful,
AjK 0:0a841b89d614 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
AjK 0:0a841b89d614 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
AjK 0:0a841b89d614 14 * GNU General Public License for more details.
AjK 0:0a841b89d614 15 *
AjK 0:0a841b89d614 16 * You should have received a copy of the GNU General Public License
AjK 0:0a841b89d614 17 * along with SOWB. If not, see <http://www.gnu.org/licenses/>.
AjK 0:0a841b89d614 18 *
AjK 0:0a841b89d614 19 * $Id: main.cpp 5 2010-07-12 20:51:11Z ajk $
AjK 0:0a841b89d614 20 *
AjK 0:0a841b89d614 21 ***************************************************************************/
AjK 0:0a841b89d614 22
AjK 0:0a841b89d614 23 /* Need to come back and finish this. */
AjK 0:0a841b89d614 24
AjK 0:0a841b89d614 25 #include "sowb.h"
AjK 0:0a841b89d614 26 #include "user.h"
AjK 0:0a841b89d614 27 #include "debug.h"
AjK 0:0a841b89d614 28 #include "config.h"
AjK 0:0a841b89d614 29 #include "ff.h"
AjK 0:0a841b89d614 30
AjK 0:0a841b89d614 31 CONFIG_UNION system_config;
AjK 0:0a841b89d614 32
AjK 0:0a841b89d614 33 bool config_block_process;
AjK 0:0a841b89d614 34 bool config_loaded;
AjK 0:0a841b89d614 35 bool config_reload;
AjK 0:0a841b89d614 36
AjK 0:0a841b89d614 37 /** config_init
AjK 0:0a841b89d614 38 */
AjK 0:0a841b89d614 39 void config_init(void) {
AjK 0:0a841b89d614 40 int i, j;
AjK 0:0a841b89d614 41
AjK 0:0a841b89d614 42 DEBUG_INIT_START;
AjK 0:0a841b89d614 43
AjK 0:0a841b89d614 44 /*
AjK 0:0a841b89d614 45 for (i = CONFIG_FLASH_PAGE_BASE, j = 0; i < 4096; i++, j++) {
AjK 0:0a841b89d614 46 flash_read_page(i, system_config.buffers[j], true);
AjK 0:0a841b89d614 47 }
AjK 0:0a841b89d614 48
AjK 0:0a841b89d614 49 config_loaded = true;
AjK 0:0a841b89d614 50 config_reload = false;
AjK 0:0a841b89d614 51 config_block_process = false;
AjK 0:0a841b89d614 52 */
AjK 0:0a841b89d614 53
AjK 0:0a841b89d614 54 DEBUG_INIT_END;
AjK 0:0a841b89d614 55 }
AjK 0:0a841b89d614 56
AjK 0:0a841b89d614 57 /** config_process
AjK 0:0a841b89d614 58 */
AjK 0:0a841b89d614 59 void config_process(void) {
AjK 0:0a841b89d614 60
AjK 0:0a841b89d614 61 /* For long period operations (e.g. config_save()) that may call
AjK 0:0a841b89d614 62 system _process() functions, block ourselves from re-entering. */
AjK 0:0a841b89d614 63 if (config_block_process) return;
AjK 0:0a841b89d614 64
AjK 0:0a841b89d614 65 }
AjK 0:0a841b89d614 66
AjK 0:0a841b89d614 67 void config_save(void) {
AjK 0:0a841b89d614 68 int i, j;
AjK 0:0a841b89d614 69 char buffer[FLASH_PAGE_SIZE];
AjK 0:0a841b89d614 70
AjK 0:0a841b89d614 71 /* Don't re-enter this function from _process(). */
AjK 0:0a841b89d614 72 config_block_process = true;
AjK 0:0a841b89d614 73
AjK 0:0a841b89d614 74 /* Sector 15 is used as a "scratch area". It allows us to store
AjK 0:0a841b89d614 75 pages from other sectors that we need to "restore" since the
AjK 0:0a841b89d614 76 LPC1768 doesn't have enough space to store entire sectors. */
AjK 0:0a841b89d614 77 while (flash_sector_erase_in_progress()) WHILE_WAITING_DO_PROCESS_FUNCTIONS;
AjK 0:0a841b89d614 78 flash_erase_sector(15);
AjK 0:0a841b89d614 79 while (flash_sector_erase_in_progress()) WHILE_WAITING_DO_PROCESS_FUNCTIONS;
AjK 0:0a841b89d614 80
AjK 0:0a841b89d614 81 /* We need to make a copy of all the pages below our config area
AjK 0:0a841b89d614 82 before we store our configuration. */
AjK 0:0a841b89d614 83 for (i = 4096 - 256; i < CONFIG_FLASH_PAGE_BASE; i++) {
AjK 0:0a841b89d614 84 flash_read_page(i, buffer, true);
AjK 0:0a841b89d614 85 flash_page_write(3840 + i, buffer);
AjK 0:0a841b89d614 86 while(flash_write_in_progress()) WHILE_WAITING_DO_PROCESS_FUNCTIONS;
AjK 0:0a841b89d614 87 }
AjK 0:0a841b89d614 88
AjK 0:0a841b89d614 89 /* Now erase the sector in which our config resides. */
AjK 0:0a841b89d614 90 while (flash_sector_erase_in_progress()) WHILE_WAITING_DO_PROCESS_FUNCTIONS;
AjK 0:0a841b89d614 91 flash_erase_sector(14);
AjK 0:0a841b89d614 92 while (flash_sector_erase_in_progress()) WHILE_WAITING_DO_PROCESS_FUNCTIONS;
AjK 0:0a841b89d614 93
AjK 0:0a841b89d614 94
AjK 0:0a841b89d614 95 for (i = CONFIG_FLASH_PAGE_BASE, j = 0; i < CONFIG_FLASH_PAGE_BASE + CONFIG_FLASH_PAGES; i++, j++) {
AjK 0:0a841b89d614 96 while(flash_write_in_progress() || flash_sector_erase_in_progress()) {
AjK 0:0a841b89d614 97 WHILE_WAITING_DO_PROCESS_FUNCTIONS;
AjK 0:0a841b89d614 98 }
AjK 0:0a841b89d614 99 flash_page_write(i, system_config.buffers[j]);
AjK 0:0a841b89d614 100 }
AjK 0:0a841b89d614 101
AjK 0:0a841b89d614 102 config_block_process = false;
AjK 0:0a841b89d614 103 }
AjK 0:0a841b89d614 104
AjK 0:0a841b89d614 105 /** config_copy_flash_page
AjK 0:0a841b89d614 106 *
AjK 0:0a841b89d614 107 * Used to copy the raw config struct, page by page
AjK 0:0a841b89d614 108 * to an external memory buffer.
AjK 0:0a841b89d614 109 *
AjK 0:0a841b89d614 110 * @param int page The page to copy.
AjK 0:0a841b89d614 111 * @param char* buffer The buffer to copy the page to.
AjK 0:0a841b89d614 112 */
AjK 0:0a841b89d614 113 void config_copy_flash_page(int page, char *buffer) {
AjK 0:0a841b89d614 114 memcpy(buffer, system_config.buffers[page], FLASH_PAGE_SIZE);
AjK 0:0a841b89d614 115 }
AjK 0:0a841b89d614 116
AjK 0:0a841b89d614 117 /** config_get_page
AjK 0:0a841b89d614 118 *
AjK 0:0a841b89d614 119 * Get the base address of a specific page of config data.
AjK 0:0a841b89d614 120 *
AjK 0:0a841b89d614 121 * @param int page The page to get the address of.
AjK 0:0a841b89d614 122 * @return char* The address of the page.
AjK 0:0a841b89d614 123 */
AjK 0:0a841b89d614 124 char * config_get_page(int page) {
AjK 0:0a841b89d614 125 return system_config.buffers[page];
AjK 0:0a841b89d614 126 }
AjK 0:0a841b89d614 127
AjK 0:0a841b89d614 128
AjK 0:0a841b89d614 129