TWI587130B - HDD LED Control System - Google Patents

Description

Hard disk light control system

The present invention relates to a signal control system, and more particularly to a hard disk control system for a solid state drive (SSD) supporting a PCI Express (PCI-E) protocol.

Referring to FIG. 1, a conventional hard disk signal control system includes a control unit 91, a first type of hard disk 93, a second type of hard disk 94, and a baseboard management controller (BMC) 92. And a light emitting diode unit 95. The first type of hard disk 93 is a hard disk supporting a Serial Attached Small Computer System Interface (Serial Attached SCSI (SAS) protocol or a Serial Advanced Technology Attachment (Serial ATA; SATA) protocol. dish. The second type of hard disk 94 is a solid state drive (SSD) supporting the PCI-E protocol.

The substrate management controller 92 is electrically connected to the second type of hard disk 94, and The I2C (Inter-Integrated Circuit) protocol transmits signals to the second type of hard disk 94, thereby obtaining the operating state of the second type of hard disk 94, such as an active or an abnormal.

The control unit 91 is electrically connected to the first type of hard disk 93, and transmits signals to the first type of hard disk 93 in a serial general purpose input/output (SGPIO) protocol (hereinafter referred to as SGPIO protocol). Further, the operating state of the first type of hard disk 93 is obtained. The control unit 91 is also electrically connected to the baseboard management controller 92, and transmits signals to the baseboard management controller 92 in an I2C (Inter-Integrated Circuit) protocol. In more detail, the baseboard management controller 92 is operated in a The I2C master mode, and the control unit 91 is operated in an I2C slave mode, and the baseboard management controller 92 must actively transmit the operating state of the second type hard disk 94 to the control unit 91. That is, the control unit 91 can only passively receive the operating state of the second type hard disk 94 obtained by the substrate management controller 92.

The control unit 91 is further electrically connected to the LED unit 95, and controls the LED unit 95 according to the operating state of each of the first type of hard disk 93 and the second type of hard disk 94. Corresponding light-emitting diodes, for example, a SATA hard disk is in access, the corresponding green light-emitting diode is blinking, or a SAS hard disk is abnormal, and the corresponding red light-emitting diode is always bright.

The control unit 91 of the conventional hard disk signal control system can The SGPIO protocol directly obtains the operating state of the first type of hard disk 93, but cannot directly obtain the operating state of the second type of hard disk 94. The second type of hard disk 94 can only be passively obtained via the substrate management controller 92. Operational status. Therefore, how to provide a hard disk signal control system that directly obtains the operating states of the first type of hard disk 93 and the second type of hard disk 94 makes the system design simple and uncomplicated, and becomes a problem to be solved.

Accordingly, it is an object of the present invention to provide a hard disk signal control system capable of directly obtaining an operating state of a solid state hard disk supporting the PCI-E protocol.

Thus, the hard disk signal control system of the present invention comprises N hard disks, a light emitting diode unit, and a control unit. N is an integer greater than one.

The N hard disks are respectively Serial Advanced Technology Attachment (Serial Attached SCSI; SAS) protocol Serial Attached Small Computer System Interface (Serial Attached SCSI; SAS) protocol. One of the hard disk and the solid state hard disk supporting the PCI Express (PCI-E) protocol, and outputting a first determination signal and a second determination signal, respectively.

The light emitting diode unit includes N light emitting diode groups respectively corresponding to N hard disks to display the operating states of the hard disks. The control unit is electrically connected to the N hard disks to receive the first determination signals and the second determination signals, and according to The logical value of the first determination signal and the second determination signal of each of the N hard disks is determined to be a hard disk supporting the SAS/SATA protocol and a solid state drive supporting the PCI-E protocol. Which one of them.

When the control unit determines that one of the N hard disks is a SAS/SATA-compliant hard disk, the control unit and the one of the serial general purpose input/output (SGPIO) protocols The signal is transmitted, and the operating state of the one is obtained.

When the control unit determines that one of the N hard disks is a solid state hard disk supporting the PCI-E protocol, the control unit transmits the signal in agreement with the one in an Inter-Integrated Circuit (I2C), thereby obtaining the The operating status of the person.

The control unit controls the corresponding light-emitting diode group illumination of the light-emitting diode unit according to the operating state of each of the N hard disks.

In some implementations, wherein, when a logical value of the first determination signal of one of the N hard disks is equal to a logic value of the second determination signal is equal to a first logic value, the control unit determines This is a hard drive that supports the SAS/SATA protocol.

When the logical value of the first determination signal of one of the N hard disks is equal to a second logic value and the logic value of the second determination signal is equal to the first logic value, the control unit determines that the one is A solid state drive that supports the PCI-E protocol.

In some implementations, the control unit is adapted to be electrically connected to a Baseboard Management Controller (BMC), wherein M of the N hard disks are defined as a solid state hard disk supporting the PCI-E protocol. M is an integer greater than zero. The control unit includes 8*M registers, and each of the eight registers stores an operating state of one of the M hard disks. The control unit stores the logical values of the 8*M registers according to the operating states of the M hard disks. The baseboard management controller reads the 8*M registers by the protocol of the system management bus (SMBus) to the control unit to obtain the operating state of the M hard disks. The operating state of the M hard disks includes a status flag, a warning message, a temperature, and a hard disk life, and each of the registers corresponds to one of the operating states, and includes eight bits.

In some embodiments, each of the light emitting diode groups includes a first light emitting diode that emits green light and a second light emitting diode that emits red light. When the control unit determines that the M hard disks are SSDs supporting the PCI-E protocol, the control unit further controls the corresponding LEDs according to a status signal from each of the M hard disks. The first light emitting diode of the body group emits blinking green light.

When any one of the eight registers of the eight scratchpads corresponding to any of the M hard disks corresponding to the warning message is equal to the first logical value, the control unit controls the corresponding The second light emitting diode of the light emitting diode group emits a constant red light.

In some implementations, wherein, when M is an integer greater than 1, the hard disk signal control system further includes a multiplexer electrically connecting the M hard disks and the control unit, the control The unit controls the multiplexer to sequentially transmit signals in an I2C agreement with one of the M hard disks in turn, thereby obtaining an operating state of the one.

The effect of the present invention is that the control unit determines the logical values of the first determination signal and the second determination signal of each hard disk, and determines that M of the N hard disks are solid-state supporting the PCI-E protocol. The hard disk and the M hard disk are transmitted in an I2C protocol to directly and actively obtain the operating state of the M hard disks, without the need to manage the controller via the substrate, so that the system design is simple and easy. Controlling the corresponding light emitting diode group illumination in the light emitting diode unit.

1‧‧‧Control unit

2‧‧‧First hard disk

3‧‧‧ Second hard drive

31‧‧‧ Second hard drive

32‧‧‧ Third hard disk

33‧‧‧ Fourth hard disk

34‧‧‧ Fifth hard disk

4‧‧‧Lighting diode unit

5‧‧‧Multiplexer

9‧‧‧Base Management Controller

91‧‧‧Control unit

92‧‧‧Baseboard Management Controller

93‧‧‧First class hard drive

94‧‧‧Second type hard drive

95‧‧‧Lighting diode unit

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a block diagram illustrating a conventional hard disk light number control system; FIG. 2 is a block diagram. A first embodiment of the hard disk signal control system of the present invention is illustrated; and FIG. 3 is a block diagram showing a second embodiment of the hard disk signal control system of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 2, a first embodiment of the hard disk signal control system of the present invention is adapted to be electrically connected to a Baseboard Management Controller (BMC) 9, and includes a first hard disk 2 and a second hard disk. The disc 3, a light emitting diode unit 4, and a control unit 1.

The first hard disk 2 and the second hard disk 3 are respectively a hard disk/serial advanced technology accessory supporting a Serial Attached Small Computer System Interface (Serial Attached SCSI (SAS) protocol (Serial Advanced Technology). Attachment; Serial ATA; SATA) One of the protocol hard disks and the solid state hard disk supporting PCI Express (PCI-E) protocol, and respectively outputting a first determination signal and a second determination signal.

The LED unit 4 includes two LED groups respectively corresponding to the first hard disk 2 and the second hard disk 3. Each of the light emitting diode groups includes a first light emitting diode that emits green light. And a second light emitting diode emitting red light to display an operating state of the first hard disk 2 and the second hard disk 3. It should be particularly noted that in other embodiments, each of the light emitting diode groups may also include a two-color light emitting diode to correspondingly display red light and green light.

The control unit 1 electrically connects the first hard disk 2 and the second hard disk 3 to connect Receiving the first determination signal and the second determination signal, and according to the logic of the first determination signal and the second determination signal from each of the first hard disk 2 and the second hard disk 3 The value is judged to be one of the hard disk supporting the SAS/SATA protocol and the solid state hard disk supporting the PCI-E protocol. In more detail, in the embodiment, the control unit 1 receives the two first judgments via the two IC pins (PRSNT#) from the first hard disk 2 and the second hard disk 3, respectively. And receiving, by the other two IC pins (IfDet#) from the first hard disk 2 and the second hard disk 3, the two second determination signals. Furthermore, the control unit 1 determines the logical values of the corresponding first determination signals and the second determination signals according to the logic values of the IC pins. In this embodiment, the control unit 1 is a Complex Programmable Logic Device (CPLD), but is not limited thereto.

For convenience of explanation, the first hard disk 2 is a hard disk supporting the SAS/SATA protocol, and the second hard disk 3 is a solid state hard disk supporting the PCI-E protocol as an example.

When the logic value of the first determination signal of the first hard disk 2 is equal to the logic value of the second determination signal being equal to a first logic value, the control unit 1 determines that the first hard disk 2 supports the SAS/SATA protocol. The control unit 1 and the first hard disk 2 transmit signals by a serial general purpose input/output (SGPIO) protocol, thereby obtaining an operating state of the first hard disk 2. When the first hard disk 2 is in access, the control unit 1 controls the pair The first light-emitting diode of the light-emitting diode group should emit flashing green light. When the first hard disk 2 is in an abnormal state, the control unit 1 controls the second light emitting diode of the corresponding light emitting diode group to emit a constant red light.

When the logic value of the first determination signal of the second hard disk 3 is equal to a second logic value and the logic value of the second determination signal is equal to the first logic value, the control unit 1 determines that the one is supporting the PCI. a solid-state hard disk of the -E protocol, and the control unit 1 and the second hard disk 3 transmit signals by an I2C (Inter-Integrated Circuit) agreement, thereby obtaining an operating state of the one. In more detail, the control unit 1 is operated in an I2C master mode, so that the operating state of the second hard disk 3 can be directly and actively obtained. In this embodiment, the first logic value is a logic 0, and the second logic value is a logic 1, but not limited thereto.

The control unit 1 includes eight registers, and the eight registers correspond to the operating state of the solid state hard disk (ie, the second hard disk 3) supporting the PCI-E protocol. The control unit 1 stores the logic values of the eight registers according to the operating state of the second hard disk 3 to correspondingly indicate different operating states. The baseboard management controller 9 reads the eight temporary registers by the system management bus (SMBus) protocol to the control unit 1 to obtain a solid state hard disk supporting the PCI-E protocol (ie, the second hard disk). The operating state of the disc 3). The operating state of the solid state hard disk (ie, the second hard disk 3) supporting the PCI-E protocol includes a status flag, a warning message, a temperature, a hard disk life, and a plurality of reserved states. Each register corresponds to one of the operating states, And includes eight bits.

When the control unit 1 determines that the second hard disk 3 is a solid state drive supporting the PCI-E protocol, the control unit 1 is further based on a state from the second hard disk 3 via an IC pin (HDD_Ready pin). And a signal that controls the corresponding first LED of the LED group to emit blinking green light. In more detail, when the second hard disk 3 is in access, the status signal generated by the second hard disk 3 jumps between logic 0 and logic 1, and the control unit 1 divides the status signal. Frequency and output to the corresponding first LED of the LED group to control the first LED to emit flashing green light.

When any one of the registers of the eight registers corresponding to the second hard disk 3 corresponding to the warning message is equal to the first logic value, the control unit 1 controls the corresponding light-emitting two The second light-emitting diode of the polar body group emits a constant red light. In other words, when the second hard disk 3 is in an abnormal state, the control unit 1 transmits a signal to the second hard disk 3 by using the I2C protocol, and further knows that the second hard disk 3 is abnormal, and can The logical value of the register of the eight registers corresponding to the warning message is changed. In addition, the eight bits of the register corresponding to the warning message respectively represent different abnormal conditions. When the control unit 1 transmits the signal to the second hard disk 3 by using the I2C protocol, the second hard disk can be known. 3 Which one of the exception conditions is in response to changing the logical value of which of the bits of the register. At this time, when the baseboard management controller 9 manages the busbar protocol by the system, the control unit 1 reads the eight temporary registers. When any one of the registers of the register corresponding to the warning message is equal to the first logic value, the baseboard management controller 9 learns that the second hard disk 3 is in an abnormal state and corresponds to the abnormal situation. Recorded in a log file (Logs).

Referring to FIG. 3, a second embodiment of the hard disk signal control system of the present invention is substantially the same as the first embodiment, except that the hard disk light control system includes N hard disks, and wherein The M hard disks are solid state hard disks supporting the PCI-E protocol, and the hard disk signal control system further includes a multiplexer (MUX) 5, and the control unit 1 includes 8*M registers. Both N and M are integers greater than 1, and the light-emitting diode unit includes N light-emitting diode groups respectively corresponding to N hard disks to display the operating states of the hard disks. Each of the eight*M scratchpads stores an operational state of one of the M hard disks. The control unit 1 stores the logical values of the 8*M registers according to the operating states of the M hard disks. For convenience of explanation, the first hard disk 2 is a hard disk supporting the SAS/SATA protocol, and M=4, that is, a second hard disk 31, a third hard disk 32, and a fourth hard disk 33. And a fifth hard disk 34 is a solid state hard disk supporting the PCI-E protocol as an example.

The multiplexer electrically connects the hard disks 31 to 34 and the control unit 1. The control unit 1 controls the multiplexer 5 to sequentially transmit signals in an I2C agreement with one of the hard disks 31 to 34 in order to obtain the operating state of the one. In more detail, each of the hard disks 31-34 transmits the corresponding first determination signal to the control unit 1 via a different IC pin (PRSNT#), and via a different one. The IC pin (IfDet#) transmits the corresponding second determination signal to the control unit 1. For example, if there are four such hard disks 31~34, there are four IC pin positions (PRSNT#), and there are four IC pin positions (IfDet#). The hard disks 31-34 also output the signals supporting the I2C protocol to the input end of the multiplexer 5, so that the control unit 1 sequentially controls the multiplexer 5 to switch its input end to its output end, and The operating states of the hard disks 31 to 34 can be obtained in turn, and the number of signal connections between the control unit 1 and the hard disks 31 to 34 can be saved, that is, the IC pin of the control unit 1 can be saved. Quantity. Furthermore, since the multiplexer 5 outputs a signal from which one of the hard disks 31 to 34 to the control unit 1 is controlled by the control unit 1 to control the multiplexer 5, therefore, When controlling the switching of the multiplexer 5, the control unit 1 actively knows which hard disk the received signal is from, and thus can store the obtained operating state of the hard disk to the corresponding temporary storage device. The corresponding light-emitting diode group illumination can be controlled simply and correctly.

In addition, in the embodiment, the multiplexer 5 is disposed outside the control unit 1, and in other embodiments, the multiplexer 5 may also be disposed within the control unit 1. In addition, it should be particularly noted that the control unit 1 is via the two IC pins (PRSNT#, IfDet#) from each hard disk (considered as a group of IC pins) to receive a corresponding hard disk. a first determination signal and the second determination signal. Therefore, when the control unit 1 determines that the logical value of one of the IC pin positions is equal to the second logic value, that is, the logic value corresponding to the first determination signal is equal to the logic of the second determination signal. When the value is equal to the second logic value, the control unit 1 determines that the corresponding hard disk is not connected.

In summary, the hard disk signal control system of the present invention determines the M of the N hard disks by the control unit 1 determining the logical values of the first determination signal and the second determination signal of each hard disk. A solid state drive that supports the PCI-E protocol, and transmits signals to the M hard disks in an I2C protocol, thereby directly and actively acquiring the operating state of the M hard disks without the need to manage the controller via the baseboard. 9. The design of the system is relatively simple and it is easy to control the corresponding light-emitting diode group illumination in the light-emitting diode unit 4, so that the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the simple equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still Within the scope of the invention patent.

1‧‧‧Control unit

2‧‧‧First hard disk

3‧‧‧ Second hard drive

4‧‧‧Lighting diode unit

9‧‧‧Base Management Controller

Claims (4)

A hard disk light number control system comprising: N hard disks, respectively, a hard disk/serial advanced technology accessory supporting a Serial Attached Small Computer System Interface (Sialial Attached SCSI; SAS) protocol (Serial) Advanced Technology Attachment; Serial ATA; SATA) one of the hard disk and one of the PCI Express (PCI-E)-compliant solid state drives, and outputs a first determination signal and a second determination signal, respectively, N is greater than An integer of 1; a light-emitting diode unit comprising N light-emitting diode groups respectively corresponding to N hard disks to display an operating state of the hard disks; a control unit electrically connecting the N hard disks, Receiving the first determination signal and the second determination signal, and determining, according to the logic values of the first determination signal and the second determination signal from each of the N hard disks, Which of the hard disk drives supporting the SAS/SATA protocol and the solid state drive supporting the PCI-E protocol, when the control unit determines that one of the N hard disks supports a SAS/SATA protocol hard disk, the control Unit and The latter transmits the signal by a serial general purpose input/output (SGPIO) protocol to obtain the operating state of the one, and the control unit determines that one of the N hard disks is supported. In the PCI-E protocol solid state hard disk, the control unit transmits the signal in agreement with the one in the I2C (Inter-Integrated Circuit), and then takes the signal The operation unit of the one of the N hard disks is controlled according to the operating state of each of the N hard disks, and the control unit is adapted to emit light corresponding to the light emitting diode group. Electrically connected to a Baseboard Management Controller (BMC), wherein M of the N hard disks are defined as a solid state hard disk supporting PCI-E protocol, and M is an integer greater than zero, and the control unit includes 8 *M registers, and each of the eight registers stores the operating state of one of the M hard disks, and the control unit stores the 8*M temporary according to the operating state of the M hard disks. The logic value of the memory, the baseboard management controller uses the system management bus (SMBus) agreement to the control unit to read the 8*M registers to obtain the operating state of the M hard disks. The operating state of the M hard disks includes a status flag, a warning message, a temperature, and a hard disk life, and each of the registers corresponds to one of the operating states, and includes eight bits. The hard disk light number control system of claim 1, wherein a logic value of the first determination signal of one of the N hard disks is equal to a logic value of the second determination signal is equal to a first logic value When the control unit determines that the one is a hard disk supporting the SAS/SATA protocol, when the logical value of the first determination signal of one of the N hard disks is equal to a second logic value and the second determination signal When the logical value is equal to the first logical value, the control unit determines that the one is a solid state hard disk supporting the PCI-E protocol. The hard disk signal control system of claim 1, wherein each of the light emitting diode groups includes a first light emitting diode that emits green light and a second light emitting diode that emits red light. When the control unit determines that the M hard disks are solid state disks supporting the PCI-E protocol, the control unit further controls the corresponding LED group according to a status signal from each of the M hard disks. The first light emitting diode emits blinking green light when any one of the eight registers of the eight scratchpads corresponding to any one of the M hard disks corresponds to the buffer When the first logic value is equal to the first logic value, the control unit controls the second LED of the corresponding LED group to emit a constant red light. The hard disk light number control system of claim 3, wherein when the M is an integer greater than 1, the hard disk light number control system further comprises a multiplexer electrically connecting the M hard disks. And the control unit, the control unit controls the multiplexer to sequentially transmit and receive signals in an I2C agreement with one of the M hard disks in order to obtain an operating state of the one of the M multiplexers.