Rambla* = Random access memory block allocator Rambla* = Random access memory block allocatorRambla from LanzSoft is a free available concept.
Compared to the many Flash File Systems on the market, this Object Manager is
optimized for tables and databases without using files.
|
Rambla |
Conventional (Journal) Flash File System |
|
for NOR flash |
for NAND flash |
|
Block size 64 or 128 kBytes |
Block size 512 Bytes |
|
used for variables (data records) |
used for files |
|
writes only the changed data |
rewrites 512 Bytes with each modify command |
|
uses Pointers |
uses File Allocation Table |
| 25% overhead @16 bytes data | 33% (UBIFS) / 43% (JFFS2) see Link |
• maximum
lifetime / minimum wear-out
• as
many different variable sizes as needed
• optimized
3-byte pointer
• boot loader included
• interruptable software update
Mind map
(gif)
Memory Organization (pdf)
Boot Procedure (Flash presentation)
Incomplete Firmware Download (Flash presentation)
Init & Enumeration (Flash presentation)
* Rambla is a famous promenade in Barcelona Link to Rambla
