6 Application Code

In total, there are six functions. The first four functions are called directly by the user. The last two functions are called with the following functions.

• EEPROM_TypeB_init
• EEPROM_TypeB_write
• EEPROM_TypeB_readDataItem
• EEPROM_TypeB_eraseGroup
• EEPROM_TypeB_findDataItem
• EEPROM_TypeB_transferDataItem

The following two global variables are used to trace the active group:

• uint16_t gActiveDataItemNum;
• uint16_t gActiveGroupNum;

gActiveDataItemNum is used to record the number of data items.

gActiveGroupNum is used to record the active group.

Two global variables are used for flags:

• bool gEEPROMTypeBSearchFlag;
• bool gEEPROMTypeBEraseFlag;

gEEPROMTypeBSearchFlag is set when EEPROM_TypeB_readDataItem finds the data item based on input identifier.

gEEPROMTypeBEraseFlag is set when the group is full and needs to be erased.

All global variables are defined in eeprom_emulation_type_b.c.