CN103488556A

CN103488556A - Method for achieving different light-emitting diode (LED) flickering modes according to different power states

Info

Publication number: CN103488556A
Application number: CN201310436867.7A
Authority: CN
Inventors: 张锋
Original assignee: Inspur Electronic Information Industry Co Ltd
Current assignee: Inspur Electronic Information Industry Co Ltd
Priority date: 2013-09-24
Filing date: 2013-09-24
Publication date: 2014-01-01

Abstract

The invention discloses a method for achieving different light-emitting diode (LED) flickering modes according to different power states. After an alternating current (AC) power module is inserted into a product and before a power button is pressed, a BMC is utilized to control general purpose input output (GPIO) to be increased or decreased periodically with a fixed frequency to control an LED lamp to flicker. When the power button of a system is pressed and startup is conducted, the BMC is utilized to control the GPIO to be increased or decreased periodically with another frequency to control the LED lamp to flicker to indicate the current state before formal Boot is finished. After the Boot process of the system is finished, the BMC receives information transmitted by a basic input output system (BIOS) and releases frequency control on the GPIO to enable the GPIO to be in the constant-high state, and the LED lamp of the system power lights constantly. After the design scheme is introduced, displaying of various LEDs can be supported, and distinguishing and location of product operation states in a large computer room can be facilitated. Meanwhile, the method provides design features for products and provides powerful support for product market competition.

Description

A kind of method that realizes the different LED flashing mode according to the Power different conditions

Technical field

The present invention relates to the computer server system design field, be specifically related to a kind of method that realizes the different LED flashing mode according to the Power different conditions.

Technical background

At present server substantially continue to use before the mentality of designing of OEM pattern, the LED of indication mechanism Power state has two kinds of flicker patterns: normal bright or often go out.South bridge BIOS is after Post completes, and apprizing system Power completes, and now system can be lighted Power LED lamp.The Power LED state in often going out always before this.

The design of traditional server front control board, Power LED lamp only means the system Power start that whether can power on, and can not effectively distinguish the different conditions of Power, more can not effectively give the client and feel intuitively.

Along with the product client use group continuous expansion, most of client need can in start process and before start and the different state such as start Power fault in order to distinguish, real-time pass to the attendant, particularly in server cluster and large-scale machine room, along with increasing of machine quantity, can not guarantee that the machine room attendant can monitor each machine, can not guarantee to occur without abnormal in each machine power up.Therefore, in certainly grinding server product, develop the LED Presentation Function of different Power states, present to the open state of maintainer's machine by mode the most intuitively, so that the maintainer better pinpoints the problems and deals with problems.

Summary of the invention

The technical problem to be solved in the present invention is: in start process and before start and the different state such as start Power fault in order to distinguish.

The technical solution adopted in the present invention is:

A kind of method that realizes the different LED flashing mode according to the Power different conditions, Power state before powering on: after the maintainer carries out the insertion of AC power supplies module to product, before not pressing Power button, only has the Standby electricity, now to the client, indicating machine power does not have the core electricity, therefore, under this state, by BMC, controls GPIO with a fixed frequency, periodically uprise or step-down, in order to control the flicker of LED lamp.

After system is pressed Power button start, but before formal Boot completes, although now each power supply status all starts, but system also could not complete start-up course, now by BMC, control GPIO with the another one frequency, periodically uprise or step-down, control LED flicker indication current state.

After system completes the Boot process, BMC receives the information that BIOS passes over, and discharges the frequency control of GPIO, changes a normal high state into, system Power LED lantern festival Chang Liang now, and normal Boot is complete for display system, and the client can normally use server.

After the AC power supplies module removal, now system Power LED lantern festival is often gone out.

BMC is used the Power_LED_CTL control signal to control the 74HC1G126 chip and opens or close path, the GPIO signal setting is Power LED control signal simultaneously, BMC, by the frequency adjustment of this signal, outputs to the control pin of LED, realizes the flicker of LED different conditions.

Annotate: GPIO, English full name is General-Purpose IO ports, namely universal I/O port.

Beneficial effect of the present invention is: after having imported this design proposal, can support the demonstration of multiple LED, be convenient to differentiation and the location of product running status in large-scale machine room, this scheme is also the product design characteristic simultaneously, for product market competition provides, provides powerful support for.

The accompanying drawing explanation

Fig. 1 is system and BMC, the interconnected schematic diagram of Power LED;

The circuit design that Fig. 2 is the LED control signal.

Embodiment

With reference to the accompanying drawings, in conjunction with the embodiments to the detailed description of the invention.

Following table is LED flicker standards and Power corresponding relation:

?	LED state
		AC inserts, not start	Flicker at a slow speed (periodically step-down)
AC inserts, and has started shooting	Fast blink (periodically uprising)
		AC inserts, and start completes	Chang Liang
AC removes	Often go out

Wherein, BMC is used the Power_LED_CTL control signal to control the 74HC1G126 chip and opens or close path, and the GPIO signal setting is Power LED control signal simultaneously, and BMC is by the frequency adjustment of this signal, output to the control pin of LED, realize the flicker of LED different conditions.

Claims

1. a method that realizes the different LED flashing mode according to the Power different conditions is characterized in that:

After product is carried out to the insertion of AC power supplies module, before not pressing Power button, only has the Standby electricity, now by BMC, control GPIO with a fixed frequency, periodically uprise or step-down, in order to control the flicker of LED lamp, indicating machine power does not have the core electricity;

After system is pressed Power button start, before formal Boot completes, now each power supply status all starts, but system also could not complete start-up course, now by BMC, control GPIO with the another one frequency, periodically uprise or step-down, control LED flicker indication current state;

After system completes the Boot process, BMC receives the information that BIOS passes over, and discharges the frequency control of GPIO, changes a normal high state into, system Power LED lamp Chang Liang now, and normal Boot is complete for display system, and the client can normally use server;

After product is carried out to the AC power supplies module removal, now system Power LED lamp often goes out.

2. a kind of method that realizes the different LED flashing mode according to the Power different conditions according to claim 1, it is characterized in that: described BMC is used the Power_LED_CTL control signal to control the 74HC1G126 chip and opens or close path, the GPIO signal setting is Power LED control signal simultaneously, BMC is by the frequency adjustment of this signal, output to the control pin of LED, realize the flicker of LED different conditions.