Diff: config/config.c

Revision:

0:0a841b89d614

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/config/config.c	Mon Oct 11 10:34:55 2010 +0000
@@ -0,0 +1,129 @@
+/****************************************************************************
+ *    Copyright 2010 Andy Kirkham, Stellar Technologies Ltd
+ *    
+ *    This file is part of the Satellite Observers Workbench (SOWB).
+ *
+ *    SOWB is free software: you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation, either version 3 of the License, or
+ *    (at your option) any later version.
+ *
+ *    SOWB is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with SOWB.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *    $Id: main.cpp 5 2010-07-12 20:51:11Z ajk $
+ *    
+ ***************************************************************************/
+
+/* Need to come back and finish this. */
+
+#include "sowb.h"
+#include "user.h"
+#include "debug.h"
+#include "config.h"
+#include "ff.h"
+
+CONFIG_UNION    system_config;
+
+bool config_block_process;
+bool config_loaded;
+bool config_reload;
+
+/** config_init
+ */
+void config_init(void) {
+    int i, j;
+    
+    DEBUG_INIT_START;
+    
+    /*
+    for (i = CONFIG_FLASH_PAGE_BASE, j = 0; i < 4096; i++, j++) {
+        flash_read_page(i, system_config.buffers[j], true);
+    }
+    
+    config_loaded        = true;
+    config_reload        = false;
+    config_block_process = false;
+    */
+    
+    DEBUG_INIT_END;
+}
+
+/** config_process
+ */
+void config_process(void) {
+
+    /* For long period operations (e.g. config_save()) that may call
+       system _process() functions, block ourselves from re-entering. */
+    if (config_block_process) return;
+    
+}
+
+void config_save(void) {
+    int i, j;
+    char buffer[FLASH_PAGE_SIZE];
+    
+    /* Don't re-enter this function from _process(). */
+    config_block_process = true;
+    
+    /* Sector 15 is used as a "scratch area". It allows us to store
+       pages from other sectors that we need to "restore" since the
+       LPC1768 doesn't have enough space to store entire sectors. */
+    while (flash_sector_erase_in_progress()) WHILE_WAITING_DO_PROCESS_FUNCTIONS;
+    flash_erase_sector(15);
+    while (flash_sector_erase_in_progress()) WHILE_WAITING_DO_PROCESS_FUNCTIONS;
+    
+    /* We need to make a copy of all the pages below our config area
+       before we store our configuration. */
+    for (i = 4096 - 256; i < CONFIG_FLASH_PAGE_BASE; i++) {
+        flash_read_page(i, buffer, true);
+        flash_page_write(3840 + i, buffer);
+        while(flash_write_in_progress()) WHILE_WAITING_DO_PROCESS_FUNCTIONS;
+    }
+
+    /* Now erase the sector in which our config resides. */
+    while (flash_sector_erase_in_progress()) WHILE_WAITING_DO_PROCESS_FUNCTIONS;
+    flash_erase_sector(14);
+    while (flash_sector_erase_in_progress()) WHILE_WAITING_DO_PROCESS_FUNCTIONS;
+
+        
+    for (i = CONFIG_FLASH_PAGE_BASE, j = 0; i < CONFIG_FLASH_PAGE_BASE + CONFIG_FLASH_PAGES; i++, j++) {
+        while(flash_write_in_progress() || flash_sector_erase_in_progress()) {
+            WHILE_WAITING_DO_PROCESS_FUNCTIONS;
+        }
+        flash_page_write(i, system_config.buffers[j]);
+    }
+    
+    config_block_process = false;
+}
+
+/** config_copy_flash_page
+ *
+ * Used to copy the raw config struct, page by page
+ * to an external memory buffer.
+ *
+ * @param int page The page to copy.
+ * @param char* buffer The buffer to copy the page to.
+ */
+void config_copy_flash_page(int page, char *buffer) {
+    memcpy(buffer, system_config.buffers[page], FLASH_PAGE_SIZE);
+}
+
+/** config_get_page
+ *
+ * Get the base address of a specific page of config data.
+ *
+ * @param int page The page to get the address of.
+ * @return char* The address of the page.
+ */
+char * config_get_page(int page) {
+    return system_config.buffers[page];
+}
+
+
+