Low-power-consumption awakening method based on specific feature code

Abstract

The invention discloses a low-power-consumption wake-up method based on a specific feature code, which comprises the following steps of: 1, connecting a signal receiving module to an external interrupt pin of a control module, configuring the pin to be in a rising edge interrupt trigger mode or a falling edge interrupt trigger mode, taking the pin as a trigger pin for wake-up judgment and taking the pin as a falling edge interrupt trigger mode, wherein the pins are receiving pins for receiving feature code signals, and the equipment works in a low-power-consumption state; 2, after the external interrupt pin is triggered, switching to an interrupt service function, and starting to record information received by the external interrupt pin; and 3, after recording is completed, judging whether information received by the external interrupt pin is matched with a preset feature code or not, if yes, awakening the device, and if not, executing the step 2, and waiting the next interrupt to be triggered. An external interruption mechanism is used for replacing a timing awakening mechanism, power consumption is greatly reduced, meanwhile, limitation of a communication protocol is broken through, and the method has the advantages of being high in flexibility and good in compatibility.

Description

technical field [0001] The invention relates to a method for waking up electronic equipment, in particular to a method for waking up an electric energy meter in a low power consumption state. Background technique [0002] At this stage, the State Grid requires that the infrared meter can only be woken up when it receives the three bytes "68 11 04". In order to enable the energy meter to support the infrared wake-up meter reading function of specific messages, the implementation method in the prior art is to allow the energy meter to wake up regularly in a low power consumption state, configure the infrared function, turn on the infrared receiving tube for a period of time, and judge that it is within a specified time Whether to receive a specific message, if it is received, it will start the meter reading function, if not, it will return to the low power consumption state. [0003] Since the byte reception is realized through the UART peripheral of the main control chip for...

AI Technical Summary

Problems solved by technology

[0003] Since the byte reception is realized through the UART peripheral of the main control chip for data transmission at the specified baud rate, the data reception rules must meet the UART asynchronous serial communication protocol to further analyze the data, so the wake-up byte For identification, it is necessary to configure and turn on the UART peripheral for a period of time, which causes the energy meter to frequently exit, use UART, and then enter low power consumption mode, resulting in high power consumption and affecting battery life

Images