DSP control system software update method and device

The invention provides a DSP control system software update method and device and relates to the field of software update.The method includes the steps that a plurality of update code segments are received in a cache area of a DSP chip; during the time that the code segments to be updated are not executed, the DSP chip replaces the code segments to be updated with updated code segments, so that update of DSP control system software is finished.By means of the network communication technology, the cache and burning process in the software update method is conducted on an intelligent controller, and a software system can be updated under the condition that an electric energy control device is not detached or powered off or even operation is not interrupted.