Oleg Evsegneev / FRAMLog

Log system based on external FRAM storage. Allow to collect float values in FRAM, and then store whole collection into file on flash.

Sample code

#include "mbed.h"
#include "FRAMLog.h"

SPI spi(p5,p6,p7);
FRAMLog flog(spi, p8, 4, 2048);
Serial pc(USBTX, USBRX);

int main() {
    for( int i=0; i<2048; i++){
        flog.log(i/4096.0);
        flog.log(i/(4096.0+1));
        flog.log(i/(4096.0+2));
        flog.log(i/(4096.0+3));
    }
    flog.save();
}

Diff: FileLog.cpp

Revision:
1:4e5cda0920d3
Parent:
0:f211f4870371
--- a/FileLog.cpp	Mon Oct 15 17:04:49 2012 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,50 +0,0 @@
-/* mbed File Log Library
- * Copyright (c) 2012 Oleg Evsegneev
- *
- * 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 "mbed.h"
-#include "FileLog.h"
-
-FileLog::FileLog( short cols, short rows ): _local("local") {
-    _cols = cols;
-    _rows = rows;
-    _data_idx = 0;
-    _data = new float[cols*rows];
-}
-
-void FileLog::log( float value ) {
-    _data[_data_idx++] = value;
-}
-
-void FileLog::save() {
-    FILE *fp = fopen("/local/log.txt", "w");
-    for( short i=0; i<_data_idx; i++){
-        if( i && (i % _cols == 0))
-            fprintf( fp, "\r\n");
-        else if( i && i != _data_idx-1 )
-            fprintf( fp, "\t");
-        fprintf( fp, "%.4f", _data[i]);
-    }
-    fclose(fp);
-    
-    delete [] _data;
-    _data = NULL;
-}