R01US0068EJ0100 Datasheet, PDF (24/56 Pages) Renesas Technology Corp – EEPROM Emulation Library

RL78 Family
EEPROM Emulation Library Pack02
Chapter 3 EEL Functional Specifications
3.5 BGO（Back Ground Operation）function
The EEL_Execute function starts command processing and then immediately returns the control to the user
program. This allows the user program to run during the data flash operation and so is called back ground operation
(BGO).
The data flash read or write command processing is started by executing the EEL_Execute function, and the
processing is continued and completed by executing the EEL_Handler function. For this reason, the EEL_Handler
function must be executed continuously until the processing is completed.
To see if the processing requested from the EEL_Execute function has been successfully completed, call the
EEL_Handler function from the user program and check the status of ongoing processing.
The EEL_CMD_SHUTDOWN command does not require calling of the EEL_Handler function. However, we
recommend that you follow the command operation flowchart shown in figure 3-3.
R01US0068EJ0100 Rev.1.00
Mar. 28, 2014
Page 24 of 53