Diff: DataFlash/flashDataBlock.cpp

Revision:

3:1196befeace0

diff -r 45b351b4fc2a -r 1196befeace0 DataFlash/flashDataBlock.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DataFlash/flashDataBlock.cpp	Wed Apr 08 08:41:16 2020 +0000
@@ -0,0 +1,96 @@
+#include "flashDataBlock.h"
+#include "FlashIAPBlockDevice.h"
+
+extern void printf_niz( char *s, char *niz, int val );
+//{
+//   printf("%s",s);
+//   for( int i=0; i < val; i++)  printf("%c", niz[i]);
+//   printf("\n\r");   
+//}
+
+
+FlashIAPBlockDevice bd((uint32_t)FLASH_ADDRESS,BLOCK_VALUE);
+
+int device_size;
+int read_size;
+int program_size;
+int erase_size;
+int erase_value;
+int buffer_dimension = buffer_dimension;
+void init_fdb( )
+{
+    // Initialize the flash IAP block device and print the memory layout
+    int err = bd.init();
+    printf("init err=%d  \n\r", err);
+
+    printf("Flash block device size: %llu\n\r",         device_size = bd.size());
+    printf("Flash block device read size: %llu\n\r",    read_size = bd.get_read_size());
+    printf("Flash block device program size: %llu\n\r", program_size = bd.get_program_size());
+    printf("Flash block device erase size: %llu\n\r",   erase_size = bd.get_erase_size());
+    printf("Flash block device geterase value: %x\n\r", erase_value =  bd.get_erase_value());
+
+    if( bd.is_valid_read( 0, bd.get_read_size() ) )  printf(" read valid \n\r");
+}
+
+void deinit_fdb( void )
+{
+    bd.deinit();
+}
+
+int scale_buffer_dimension( int val )
+{
+    if( val > device_size ) { val = buffer_dimension = device_size; printf("buf_dim = %d\n\r", buffer_dimension);}
+    else if( val > buffer_dimension ) { buffer_dimension = val; printf("buf_dim = %d\n\r", buffer_dimension);}
+  return val;
+}
+
+ int read_fdb( int rel_adr, char *buffer, int val )
+ {  
+  int err;
+    val = scale_buffer_dimension( rel_adr+val );
+    err = bd.read(buffer, rel_adr, val);
+    return (err == 0) ? val : 0 ;
+ }
+
+int write_byte_in_flash( int adr, char value )
+{
+  int err = 0;
+  int prog_page = program_size;
+  int adr_first = (adr/prog_page)*prog_page;
+  int adr_last = adr_first + prog_page;
+
+  scale_buffer_dimension( adr );
+
+  char *buffer = (char*)malloc(buffer_dimension);
+     
+   if( !(err = bd.read(buffer, 0, buffer_dimension)))
+
+        if( !(err = bd.erase(0, erase_size)))
+        {
+            buffer[adr] = value;
+            err = bd.program(buffer, 0, (buffer_dimension % prog_page) ? buffer_dimension + prog_page - buffer_dimension % prog_page: buffer_dimension);
+        }
+
+    free(buffer);
+    return err;   
+}
+int write_niz_in_flash( int adr, char *niz, int nizval )
+{
+ int err = 0;
+  int prog_page = bd.get_program_size();
+  int adr_first = (adr/prog_page)*prog_page;
+  int adr_last = adr_first + prog_page;
+
+  scale_buffer_dimension( adr + nizval );
+
+  char *buffer = (char*)malloc(buffer_dimension);
+     
+   if(!(err = bd.read(buffer, 0, buffer_dimension)))
+     if(!(err = bd.erase(0, bd.get_erase_size())))
+     {   
+        for( int i = adr; i<(adr+nizval); i++)  buffer[adr+i] = niz[i];
+        err = bd.program(buffer, 0, (buffer_dimension % prog_page) ? buffer_dimension + prog_page - buffer_dimension % prog_page: buffer_dimension);
+     }   
+    free(buffer);
+   return err;
+}