A board support package for the LPC4088 Display Module.
Dependencies: DM_HttpServer DM_USBHost
Dependents: lpc4088_displaymodule_emwin lpc4088_displaymodule_demo_sphere sampleGUI sampleEmptyGUI ... more
Fork of DMSupport by
FileSystems/RAMFileSystem.cpp@0:6b68dac0d986, 2014-11-21 (annotated)
- Committer:
- embeddedartists
- Date:
- Fri Nov 21 11:42:51 2014 +0000
- Revision:
- 0:6b68dac0d986
- Child:
- 9:a33326afd686
First version
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
embeddedartists | 0:6b68dac0d986 | 1 | #include "RAMFileSystem.h" |
embeddedartists | 0:6b68dac0d986 | 2 | #include "mbed_debug.h" |
embeddedartists | 0:6b68dac0d986 | 3 | |
embeddedartists | 0:6b68dac0d986 | 4 | #define RAMFS_DBG 0 |
embeddedartists | 0:6b68dac0d986 | 5 | |
embeddedartists | 0:6b68dac0d986 | 6 | #define SECTOR_SIZE 512 |
embeddedartists | 0:6b68dac0d986 | 7 | |
embeddedartists | 0:6b68dac0d986 | 8 | RAMFileSystem::RAMFileSystem(uint32_t addr, uint32_t size, const char* name) : |
embeddedartists | 0:6b68dac0d986 | 9 | FATFileSystem(name) { |
embeddedartists | 0:6b68dac0d986 | 10 | memStart = addr; |
embeddedartists | 0:6b68dac0d986 | 11 | memSize = size - (size % SECTOR_SIZE); |
embeddedartists | 0:6b68dac0d986 | 12 | status = 1; //1: disk not initialized |
embeddedartists | 0:6b68dac0d986 | 13 | } |
embeddedartists | 0:6b68dac0d986 | 14 | |
embeddedartists | 0:6b68dac0d986 | 15 | int RAMFileSystem::disk_initialize() { |
embeddedartists | 0:6b68dac0d986 | 16 | debug_if(RAMFS_DBG, "init RAM fs\n"); |
embeddedartists | 0:6b68dac0d986 | 17 | status = 0; //OK |
embeddedartists | 0:6b68dac0d986 | 18 | return status; |
embeddedartists | 0:6b68dac0d986 | 19 | } |
embeddedartists | 0:6b68dac0d986 | 20 | |
embeddedartists | 0:6b68dac0d986 | 21 | int RAMFileSystem::disk_write(const uint8_t *buffer, uint64_t sector, uint8_t count) { |
embeddedartists | 0:6b68dac0d986 | 22 | debug_if(RAMFS_DBG, "write to sector(s) %llu..%llu\n", sector, sector+count); |
embeddedartists | 0:6b68dac0d986 | 23 | if ((sector+count-1) >= disk_sectors()) { |
embeddedartists | 0:6b68dac0d986 | 24 | return 1; |
embeddedartists | 0:6b68dac0d986 | 25 | } |
embeddedartists | 0:6b68dac0d986 | 26 | |
embeddedartists | 0:6b68dac0d986 | 27 | memcpy((uint8_t*)(memStart + SECTOR_SIZE*((uint32_t)sector)), buffer, SECTOR_SIZE*count); |
embeddedartists | 0:6b68dac0d986 | 28 | return 0; |
embeddedartists | 0:6b68dac0d986 | 29 | } |
embeddedartists | 0:6b68dac0d986 | 30 | |
embeddedartists | 0:6b68dac0d986 | 31 | int RAMFileSystem::disk_read(uint8_t *buffer, uint64_t sector, uint8_t count) { |
embeddedartists | 0:6b68dac0d986 | 32 | debug_if(RAMFS_DBG, "read from sector(s) %llu..%llu\n", sector, sector+count); |
embeddedartists | 0:6b68dac0d986 | 33 | if ((sector+count-1) >= disk_sectors()) { |
embeddedartists | 0:6b68dac0d986 | 34 | return 1; |
embeddedartists | 0:6b68dac0d986 | 35 | } |
embeddedartists | 0:6b68dac0d986 | 36 | |
embeddedartists | 0:6b68dac0d986 | 37 | memcpy(buffer, (uint8_t*)(memStart + SECTOR_SIZE*((uint32_t)sector)), SECTOR_SIZE*count); |
embeddedartists | 0:6b68dac0d986 | 38 | return 0; |
embeddedartists | 0:6b68dac0d986 | 39 | } |
embeddedartists | 0:6b68dac0d986 | 40 | |
embeddedartists | 0:6b68dac0d986 | 41 | int RAMFileSystem::disk_status() { |
embeddedartists | 0:6b68dac0d986 | 42 | debug_if(RAMFS_DBG, "disk status %d\n", status); |
embeddedartists | 0:6b68dac0d986 | 43 | return status; |
embeddedartists | 0:6b68dac0d986 | 44 | } |
embeddedartists | 0:6b68dac0d986 | 45 | int RAMFileSystem::disk_sync() { |
embeddedartists | 0:6b68dac0d986 | 46 | return 0; |
embeddedartists | 0:6b68dac0d986 | 47 | } |
embeddedartists | 0:6b68dac0d986 | 48 | uint64_t RAMFileSystem::disk_sectors() { |
embeddedartists | 0:6b68dac0d986 | 49 | debug_if(RAMFS_DBG, "returning fs has %u sectors\n", memSize/SECTOR_SIZE); |
embeddedartists | 0:6b68dac0d986 | 50 | return memSize/SECTOR_SIZE; |
embeddedartists | 0:6b68dac0d986 | 51 | } |
embeddedartists | 0:6b68dac0d986 | 52 | |
embeddedartists | 0:6b68dac0d986 | 53 | uint64_t RAMFileSystem::disk_size() { |
embeddedartists | 0:6b68dac0d986 | 54 | return memSize; |
embeddedartists | 0:6b68dac0d986 | 55 | } |
embeddedartists | 0:6b68dac0d986 | 56 |