Method of reading data coherently

摘要

PURPOSE: A data read method for keeping data consistency is provided so that the memory and the simple algorithm making a note of amount are added, and data can be the lead or the light. A system having the fast response speed is embodied. CONSTITUTION: A data is updated through ISR while the background program data from the ISR(Interrupt Service Routine) the lead. The update count is multiplied(S110). In case the background count having the same value as the initial update count and update count are different, the background program again takes a lead data of the back ground function background function in ISR(S120). In case new data begins to be a lead taken from ISR, the update count is initialized.