Method and device for processing cached data

Abstract

The invention is applicable to the field of information technology, and provides a processing method and device for cached data. The method includes: when receiving an instruction to enter a sleep state, acquiring the current storage capacity of cached data in the first-in-first-out memory; if the current storage capacity is greater than a first preset value and less than a second preset value, continuously querying Whether there is an interrupt request corresponding to the first-in-first-out memory, wherein the second preset value is smaller than the maximum storage capacity of the first-in-first-out memory; after querying the interrupt request corresponding to the first-in-first-out memory, read Get the cached data in the first-in-first-out memory. The present invention avoids that the interrupt request corresponding to the first-in-first-out memory cannot be processed in time during the execution of the instruction to enter the sleep state, and ensures that the cached data in the first-in-first-out memory can be read in time, thereby ensuring that the first-in-first-out memory corresponds to Cached data is not lost.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a processing method and device for cached data. Background technique [0002] In order to improve battery life, wearable smart devices usually adopt a low-power working mode, that is, the MCU (Microcontroller Unit, Micro Control Unit) stays in the sleep state for as long as possible when there is no work task, and as fast as possible after entering the working state. Finish your work tasks, then go to sleep immediately. For example, wearable smart devices usually use FIFO (First Input First Output) memory to cache the three-axis acceleration value. When the FIFO memory is full, the three-axis acceleration sensor generates an interrupt, so that the MCU reads the three-axis acceleration value cached in the FIFO memory. Acceleration value. [0003] However, the MCU in the wearable smart device not only has to deal with the interrupts generated by the three-axis a...

AI Technical Summary

Problems solved by technology

[0005] In view of this, an embodiment of the present invention provides a cache data processing method and device to solve the problem that the existing cache data processing method may cause cache data loss

Images