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Code Issues Releases Activity

OP-216: Check for existence of file table in flash and wipe sector and create

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it if missing.
This commit is contained in:
James Cotton 2011-05-14 14:23:23 -05:00
parent 2087441006
commit 0438f5cf66
1 changed files with 37 additions and 13 deletions
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50
flight/PiOS/Common/pios_flashfs_objlist.c
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@ -33,7 +33,7 @@
#include "uavobjectmanager.h"
// Private functions
static int32_t PIOS_FLASHFS_EraseLocationHeader();
static int32_t PIOS_FLAHFS_CleabObjectTableHeader();
static int32_t PIOS_FLASHFS_GetObjAddress(uint32_t objId, uint16_t instId);
static int32_t PIOS_FLASHFS_GetNewAddress(uint32_t objId, uint16_t instId);
@ -56,9 +56,9 @@ struct fileHeader {
} __attribute__((packed));
#define OBJECT_TABLE_MAGIC 0x85FB3C33
#define OBJ_MAGIC 0x3015AE71
#define OBJECT_TABLE_START 0
#define OBJECT_TABLE_START 0x00000010
#define OBJECT_TABLE_END 0x00001000
#define SECTOR_SIZE 0x00001000
@ -68,11 +68,21 @@ struct fileHeader {
*/
int32_t PIOS_FLASHFS_Init()
{
numObjects = 0;
// Check for valid object table or create one
uint32_t object_table_magic;
if (PIOS_Flash_W25X_ReadData(0, (uint8_t *)&object_table_magic, sizeof(object_table_magic)) != 0)
return -1;
if(object_table_magic != OBJECT_TABLE_MAGIC) {
if(PIOS_FLAHFS_CleabObjectTableHeader() < 0)
return -1;
}
bool found = true;
int32_t addr = OBJECT_TABLE_START;
struct objectHeader header;
numObjects = 0;
// Loop through header area while objects detect to count how many saved
while(found && addr < OBJECT_TABLE_END) {
// Read the instance data
@ -82,17 +92,24 @@ int32_t PIOS_FLASHFS_Init()
found = false;
else
numObjects++;
}
}
return 0;
}
/**
* @brief Erase the headers for all objects in the flash chip
* @return 0 if successful, -1 if not
*/
static int32_t PIOS_FLASHFS_EraseLocationHeader()
static int32_t PIOS_FLAHFS_CleabObjectTableHeader()
{
if(PIOS_Flash_W25X_EraseSector(OBJECT_TABLE_START) != 0)
return -1;
uint32_t object_table_magic = OBJECT_TABLE_MAGIC;
if (PIOS_Flash_W25X_WriteData(0, (uint8_t *)&object_table_magic, sizeof(object_table_magic)) != 0)
return -1;
return 0;
}
@ -100,7 +117,7 @@ static int32_t PIOS_FLASHFS_EraseLocationHeader()
* @brief Get the address of an object
* @param obj UAVObjHandle for that object
* @parma instId Instance id for that object
* @return 0 if success, -1 if not found
* @return address if successful, -1 if not found
*/
static int32_t PIOS_FLASHFS_GetObjAddress(uint32_t objId, uint16_t instId)
{
@ -121,6 +138,8 @@ static int32_t PIOS_FLASHFS_GetObjAddress(uint32_t objId, uint16_t instId)
if (found)
return header.address;
return -1;
}
/**
@ -186,10 +205,9 @@ int32_t PIOS_FLASHFS_ObjSave(UAVObjHandle obj, uint16_t instId, uint8_t * data)
struct fileHeader header = {
.id = objId,
.instId = instId,
.size = UAVObjGetNumBytes(obj);
.size = UAVObjGetNumBytes(obj)
};
uint32_t addr = (objEntry->id & FLASH_MASK);
PIOS_Flash_W25X_EraseSector(addr);
// Save header
@ -197,7 +215,9 @@ int32_t PIOS_FLASHFS_ObjSave(UAVObjHandle obj, uint16_t instId, uint8_t * data)
PIOS_Flash_W25X_WriteData(addr, (uint8_t *) &header, sizeof(header));
// Save data
PIOS_Flash_W25X_WriteData(addr + sizeof(header), data,objEntry->numBytes);
PIOS_Flash_W25X_WriteData(addr + sizeof(header), data, UAVObjGetNumBytes(obj));
return 0;
}
/**
@ -231,8 +251,10 @@ int32_t PIOS_FLASHFS_ObjLoad(UAVObjHandle obj, uint16_t instId, uint8_t * data)
return -2;
// Read the instance data
if (PIOS_Flash_W25X_ReadData(addr + sizeof(header), data, objEntry->numBytes) != 0)
return -3
if (PIOS_Flash_W25X_ReadData(addr + sizeof(header), data, UAVObjGetNumBytes(obj)) != 0)
return -3;
return 0;
}
/**
@ -258,4 +280,6 @@ int32_t PIOS_FLASHFS_ObjDelete(UAVObjHandle obj, uint16_t instId)
if(PIOS_Flash_W25X_EraseSector(addr) != 0)
return -2;
return 0;
}