SLAAEB4 april   2023 MSPM0G1105 , MSPM0G1106 , MSPM0G1107 , MSPM0G1505 , MSPM0G1506 , MSPM0G1507 , MSPM0G3105 , MSPM0G3106 , MSPM0G3107 , MSPM0G3505 , MSPM0G3506 , MSPM0G3507 , MSPM0L1105 , MSPM0L1106 , MSPM0L1303 , MSPM0L1304 , MSPM0L1304-Q1 , MSPM0L1305-Q1 , MSPM0L1306 , MSPM0L1306-Q1 , MSPM0L1343 , MSPM0L1344 , MSPM0L1345 , MSPM0L1346

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Difference Between EEPROM and On-Chip Flash
  4. 2Implementation
    1. 2.1 Principle
    2. 2.2 Header
  5. 3Software Description
    1. 3.1 Software Functionality and Flow
    2. 3.2 EEPROM Functions
      1. 3.2.1 Global Variables
      2. 3.2.2 EEPROM_TypeB_readDataItem
      3. 3.2.3 EEPROM_TypeB_findDataItem
      4. 3.2.4 EEPROM_TypeB_write
      5. 3.2.5 EEPROM_TypeB_transferDataItem
      6. 3.2.6 EEPROM_TypeB_eraseGroup
      7. 3.2.7 EEPROM_TypeB_init
    3. 3.3 Application Integration
    4. 3.4 EEPROM Emulation Memory Footprint
    5. 3.5 EEPROM Emulation Timing
  6. 4Application Aspects
    1. 4.1 Selection of Configurable Parameters
      1. 4.1.1 Number of Data Items
      2. 4.1.2 Cycling Capability
    2. 4.2 Recovery in Case of Power Loss
  7. 5References

3.2.2 EEPROM_TypeB_readDataItem

EEPROM_TypeB_readDataItem is used to read the data item that matches the input identifier. The software flow is shown in Figure 3-2. It calls EEPROM_TypeB_findDataItem to find the data item.

The input of the function is the identifier. The output of the function is the data. Besides, gEEPROMTypeBSearchFlag is used to show whether the data item is found.

  • Input: uint16_t data identifier
  • Output:uint32_t data

Figure 3-3 shows the different cases of EEPROM_TypeB_readDataItem. If data item is found, the function will return the data, and gEEPROMTypeBSearchFlag is set. If not, the function will return 0, and gEEPROMTypeBSearchFlag is clear. By checking the flag, users can judge whether the data is found and read successfully.

GUID-7D90AEC2-6B51-4CA6-ACB7-9444D2A31CE7-low.png Figure 3-2 The Software Flow of EEPROM_TypeB_readDataItem
GUID-F2EDD1C4-698A-4749-865C-C23099BCC6BB-low.png Figure 3-3 The Different Cases of EEPROM_TypeB_readDataItem