System and method for controlling light emitting diodes using backplane controller or enclosure management controller
Aspects of direct to systems and methods for controlling LEDs by a backplane or enclosure management controller. A controller has multiple output ports, including M ports connecting to M row control lines and N ports connecting to N column control lines. At least (M*N) LEDs respectively connected to the M row control lines and N column control lines to form a virtual LED matrix. In operation, the controller monitors N storage drives of the system, and determines at least M states for each storage drive. Based on the M states for each storage drive, the controller determines a state of each LED being ON or OFF, and outputs control signals to the at least M row control lines and the at least N column control lines through the output ports based on the state of each LED, such that the LEDs display the states of the storage drives.
1. A system, comprising:
a controller comprising a processor, at least (M+N) output ports, and a memory storing computer executable code, wherein M and N are integers greater than one, and wherein the at least (M+N) output ports comprise at least M row control ports LR(X−1) and at least N column control ports LC(Y−1);
at least N storage drives D(Y−1) controlled by the controller, Y being an integer between 1 and N;
at least (M*N) light emitting diodes (LEDs) L(X,Y) forming a virtual LED matrix having M rows and N columns, X being an integer between 1 and M, wherein the at least (M*N) LEDs L(X,Y) are physically arranged in a non-matrix arrangement, and each of the LEDs L(X,Y) is switchable between an ON state and an OFF state; and
at least M row control lines and at least N column control lines, each being electrically connected to one of the at least (M+N) output ports of the controller, wherein each of the at least N column control lines corresponds to one of the at least N storage drives, and each of the LEDs L(X,Y) is electrically connected to a corresponding one of the at least M row control lines and a corresponding one of the at least N column control lines to form the virtual LED matrix;
wherein the at least M row control ports comprise:
a first port LR(0) controlling a locate state of each of the storage drives;
a second port LR(1) controlling a fail state of each of the storage drives; and
a third port LR(2) controlling an activity state of each of the storage drives; and
wherein the computer executable code, when executed at the processor, is configured to:
monitor the at least N storage drives, and determine at least M states for each of the at least N storage drives;
determine, based on the M states for each of the at least N storage drives, a state of each of the at least (M*N) LEDs L(X,Y) being the ON state or the OFF state; and
output control signals to the at least M row control lines and the at least N column control lines through the at least (M+N) output ports based on the state of each of the at least (M*N) LEDs L(X,Y) to control the state of the at least (M*N) LEDs.
2. The system as claimed in claim 1 , wherein the computer executable code, when executed at the processor, is configured to output the control signals to the at least M row control lines and the at least N column control lines by:
in an X-th row control period, outputting a high signal to the X-th row control line of the at least M row control lines, and outputting a low signal to all of the other row control lines of the at least M row control lines; and
in the X-th row control period, outputting a high signal to the Y-th column control line of the at least N column control lines when L(X,Y) is in the ON state, and outputting a low signal to the Y-th column control line of the at least N column control lines when L(X,Y) is in the OFF state.
3. The system as claimed in claim 1 , wherein:
each of the at least M row control ports LR(X−1) is connected to one of the at least M row control lines; and
each of the at least N column control ports LC(Y−1) is connected to one of the at least N column control lines.
4. The system as claimed in claim 3 , wherein each of the at least M row control ports LR(X−1) is connected to the corresponding one of the at least M row control lines by at least one P-type metal-oxide-semiconductor field-effect transistor (MOSFET), and each of the N column control ports LC(Y−1) is connected to the corresponding one of the at least N column control lines by at least one N-type MOSFET.
5. The system as claimed in claim 1 , wherein M=3.
6. The system as claimed in claim 1 , wherein the computer executable code, when executed at the processor, is configured to determine, based on the M states for each of the at least N storage drives, the state of each of the at least (M*N) LEDs L(X,Y) being the ON state or the OFF state by:
determine the state of the LED L(1,Y) of the at least (M*N) LEDs connected to the Y-th column control line of the at least N column control lines based on the locate state of the storage drive corresponding to the Y-th column control line;
determine the state of the LED L(2,Y) of the at least (M*N) LEDs connected to the Y-th column control line of the at least N column control lines based on the fail state of the storage drive corresponding to the Y-th column control line; and
determine the state of the LED L(3,Y) of the at least (M*N) LEDs connected to the Y-th column control line of the at least N column control lines based on the activity state of the storage drive corresponding to the Y-th column control line.
7. The system as claimed in claim 1 , wherein N=8.
8. The system as claimed in claim 1 , wherein each of the storage drives is a hard disk drive (HDD) or a solid state drive (SSD).
9. A method of displaying storage states in a backplane or enclosure management system, comprising:
providing a system comprising:
a controller comprising a processor and at least (M+N) output ports, wherein M and N are integers greater than one, wherein the at least (M+N) output ports comprise at least M row control ports LR(X−1) and at least N column control ports LC(Y−1);
at least N storage drives D(Y−1) controlled by the controller, Y being an integer between 1 and N;
at least (M*N) light emitting diodes (LEDs) L(X,Y) forming a virtual LED matrix having M rows and N columns, X being an integer between 1 and M, wherein the at least (M*N) LEDs L(X,Y) are physically arranged in a non-matrix arrangement, and each of the LEDs L(X,Y) is switchable between an ON state and an OFF state; and
at least M row control lines and at least N column control lines, each being electrically connected to one of the at least (M+N) output ports of the controller, wherein each of the at least N column control lines corresponds to one of the at least N storage drives, and each of the LEDs L(X,Y) is electrically connected to a corresponding one of the at least M row control lines and a corresponding one of the at least N column control lines to form the virtual LED matrix;
wherein the at least M row control ports comprise:
a first port LR(0) controlling a locate state of each of the storage drives:
a second port LR(1) controlling a fail state of each of the storage drives; and
a third port LR(2) controlling an activity state of each of the storage drives;
monitoring, by the controller, the at least N storage drives, and determining at least M states for each of the at least N storage drives;
based on the M states for each of the at least N storage drives, determining, by the controller, a state of each of the at least (M*N) LEDs L(X,Y) being the ON state or the OFF state; and
outputting, by the controller, control signals to the at least M row control lines and the at least N column control lines through the at least (M+N) output ports based on the state of each of the at least (M*N) LEDs L(X,Y) to control the state of the at least (M*N) LEDs.
10. The method as claimed in claim 9 , wherein the controller is configured to output the control signals to the at least M row control lines and the at least N column control lines by:
in an X-th row control period, outputting a high signal to the X-th row control line of the at least M row control lines, and outputting a low signal to all of the other row control lines of the at least M row control lines; and
in the X-th row control period, outputting a high signal to the Y-th column control line of the at least N column control lines when L(X,Y) is in the ON state, and outputting a low signal to the Y-th column control line of the at least N column control lines when L(X,Y) is in the OFF state.
11. The method as claimed in claim 9 , wherein:
each of the at least M row control ports LR(X−1) is connected to one of the at least M row control lines; and
each of the at least N column control ports LC(Y−1) is connected to one of the at least N column control lines.
12. The method as claimed in claim 11 , wherein each of the at least M row control ports LR(X−1) is connected to the corresponding one of the at least M row control lines by at least one P-type metal-oxide-semiconductor field-effect transistor (MOSFET), and each of the N column control ports LC(Y−1) is connected to the corresponding one of the at least N column control lines by at least one N-type MOSFET.
13. The method as claimed in claim 9 , wherein M=3, and
wherein the controller is configured to determine, based on the M states for each of the at least N storage drives, the state of each of the at least (M*N) LEDs L(X,Y) being the ON state or the OFF state by:
determine the state of the LED L(1,Y) of the at least (M*N) LEDs connected to the Y-th column control line of the at least N column control lines based on the locate state of the storage drive corresponding to the Y-th column control line;
determine the state of the LED L(2,Y) of the at least (M*N) LEDs connected to the Y-th column control line of the at least N column control lines based on the fail state of the storage drive corresponding to the Y-th column control line; and
determine the state of the LED L(3,Y) of the at least (M*N) LEDs connected to the Y-th column control line of the at least N column control lines based on the activity state of the storage drive corresponding to the Y-th column control line.
14. The method as claimed in claim 9 , wherein each of the storage drives is a hard disk drive (HDD) or a solid state drive (SSD).
15. A non-transitory computer readable medium storing computer executable code, wherein the computer executable code, when executed at a processor of a controller, is configured to:
monitor at least N storage drives, and determine at least M states for each of the at least N storage drives, wherein the controller comprises at least (M+N) output ports, M and N are integers greater than one, the at least (M+N) output ports comprise at least M row control ports LR(X−1) and at least N column control ports LC(Y−1), and the at least N storage drives D(Y−1) are controlled by the controller, Y being an integer between 1 and N, wherein the at least M row control ports comprise:
a first port LR(0) controlling a locate state of each of the storage drives;
a second port LR(1) controlling a fail state of each of the storage drives; and
a third port LR(2) controlling an activity state of each of the storage drives;
determine, based on the M states for each of the at least N storage drives, a state of each of at least (M*N) light emitting diodes (LEDs) L(X,Y) being an ON state or an OFF state, X being an integer between 1 and M, wherein the at least (M*N) LEDs L(X,Y) are physically arranged in a non-matrix arrangement and forms a virtual LED matrix having M rows and N columns, and at least M row control lines and at least N column control lines are each electrically connected to one of the at least (M+N) output ports of the controller, wherein each of the at least N column control lines corresponds to one of the at least N storage drives, and each of the LEDs L(X,Y) is electrically connected to a corresponding one of the at least M row control lines and a corresponding one of the at least N column control lines to form the virtual LED matrix; and
output control signals to the at least M row control lines and the at least N column control lines through the at least (M+N) output ports based on the state of each of the at least (M*N) LEDs L(X,Y) to control the state of the at least (M*N) LEDs.
16. The non-transitory computer readable medium as claimed in claim 15 , wherein the computer executable code, when executed at the processor, is configured to output the control signals to the at least M row control lines and the at least N column control lines by:
in an X-th row control period, outputting a high signal to the X-th row control line of the at least M row control lines, and outputting a low signal to all of the other row control lines of the at least M row control lines; and
in the X-th row control period, outputting a high signal to the Y-th column control line of the at least N column control lines when L(X,Y) is in the ON state, and outputting a low signal to the Y-th column control line of the at least N column control lines when L(X,Y) is in the OFF state.
17. The non-transitory computer readable medium as claimed in claim 15 , wherein M=3, and
wherein the controller is configured to determine, based on the M states for each of the at least N storage drives, the state of each of the at least (M*N) LEDs L(X,Y) being the ON state or the OFF state by:
determine the state of the LED L(1,Y) of the at least (M*N) LEDs connected to the Y-th column control line of the at least N column control lines based on the locate state of the storage drive corresponding to the Y-th column control line;
determine the state of the LED L(2,Y) of the at least (M*N) LEDs connected to the Y-th column control line of the at least N column control lines based on the fail state of the storage drive corresponding to the Y-th column control line; and
determine the state of the LED L(3,Y) of the at least (M*N) LEDs connected to the Y-th column control line of the at least N column control lines based on the activity state of the storage drive corresponding to the Y-th column control line.