Difference between revisions of "Matrix - RGB LED"

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−
[[Matrix - RTC|English]]
+
[[Matrix - RGB LED/zh|查看中文]]
  
−
==介绍==
+
==Introduction==
 
[[File:Matrix-RGB_LED.png|thumb|]]
 
[[File:Matrix-RGB_LED.png|thumb|]]
−
*Matrix-RGB_LED是一个RGB发光二极管模块。5-Pin 2.54mm排针，V接电源，G接地，R、G、B引脚分别控制二极管发出红、绿、蓝三种颜色的光，或者组合发出混色光。
+
* The Matrix-RGB_LED is a RGB LED module. It has a 2.54mm pitch pin-header in which 5V is power supply, GND is ground, and R,G,B are connected to the LED’s red, green and blue pins.
 +
* The inputs to Pin R, G and B can be either GPIO signals or PWM signals. The signal level can be either 3.3V or 5V. When the inputs to Pin R,G and B are high the LED will be the brightest.When the inputs to Pin R,G and B are low the LED will be completely off. When the inputs are PWM signals the LED's brightness can be controlled by controlling the PWM's duty cycle.
  
−
您可以向R、G、B引脚输出静态的高低电平信号，也可以输出变化的PWM信号，信号电平可以是3.3V或5V。当您向R、G、B引脚输出高电平时LED以最大亮度发光，低电平就完全熄灭，可变占空比的PWM信号可以调节某种颜色光发光的亮度，从而形成多种混色光。
+
==Features==
 +
* GPIO or PWM input, 3.3/5V, LED lightness controllable via PWM
 +
* Small
 +
* 2.54 mm pitch pin-header
 +
* PCB dimension(mm): 16 x 24
 +
[[File:Matrix-RGB_LED_PCB.png|frameless|400px|]]
  
−
==特性==
+
* Pin Description:
−
*
+
{| class="wikitable"
 +
|-
 +
|Pin  || Description
 +
|-
 +
|GND    || Ground
 +
|-
 +
|5V    || Supply Voltage 5V
 +
|-
 +
|R      || Red
 +
|-
 +
|G      || Green
 +
|-
 +
|B    || Blue
 +
|}
  
−
* PCB尺寸（mm）：24x32
+
==Basic Device Operation==
−
[[File:Matrix-RGB_LED_PCB.png|frameless|400px|]]
+
* In the RGB_LED module three one-color LEDs(one red,one green and one blue) are housed in a single package.These three LEDs share one common anode or cathode.When applying control signals to the other three leads their corresponding LEDs will be on. When two or three LEDs are on simultaneously a different color will be produced.You can produce different colors by adjusting PWM signals' duty cycle.
  
−
* 引脚说明:
+
==Applications==
 +
===Connect to NanoPi M1===
 +
Refer to the following connection diagram to connect the module to the NanoPi M1:<br>
 +
[[File:Matrix-RGBLED_nanopi_m1.jpg|frameless|600px|Matrix-RGBLED_nanopi_m1]]
 +
 
 +
Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
−
|名称  || 描述
+
|Matrix-RGBLED || NanoPi M1
 
|-
 
|-
−
|SDA   || I2C SDA
+
|R   || Pin7
 +
|-
 +
|G    || Pin8
 +
|-
 +
|B    || Pin10
 
|-
 
|-
−
|SCL   || I2C SCL
+
|V   || Pin4
 
|-  
 
|-  
−
|5V    || 电源5V
+
|G    || Pin6
 +
|}
 +
 
 +
===Connect to NanoPi 2===
 +
Refer to the following connection diagram to connect the module to the NanoPi 2:<br>
 +
[[File:Matrix-RGB_LED_nanopi2.jpg|frameless|600px|Matrix-RGB_LED_nanopi2]]
 +
 
 +
Connection Details:
 +
{| class="wikitable"
 
|-
 
|-
−
|GND   || 地
+
|Matrix-RGBLED || NanoPi 2
 +
|-
 +
|R    || Pin7
 +
|-
 +
|G    || Pin8
 +
|-
 +
|B    || Pin10
 +
|-
 +
|V    || Pin4
 +
|-
 +
|G   || Pin6
 
|}
 
|}
  
−
==工作原理==
+
===Connect to NanoPi M2 / NanoPi 2 Fire===
−
* D
+
Refer to the following connection diagram to connect the module to the NanoPi M2/ NanoPi 2 Fire.<br>
 +
[[File:Matrix-RGBLED_nanopi_m2.jpg|frameless|600px|Matrix-RGBLED_nanopi_m2]]
 +
 
 +
Connection Details:
 +
{| class="wikitable"
 +
|-
 +
|Matrix-RGBLED || NanoPi M2
 +
|-
 +
|R    || Pin7
 +
|-
 +
|G    || Pin8
 +
|-
 +
|B    || Pin10
 +
|-
 +
|V    || Pin4
 +
|-
 +
|G    || Pin6
 +
|}
 +
 
 +
===Connect to NanoPC-T2===
 +
Refer to the following connection diagram to connect the module to the NanoPC-T2:<br>
 +
[[File:Matrix-RGBLED_NanoPC-T2.jpg|frameless|600px|Matrix-RGBLED_NanoPC-T2]]
 +
 
 +
Connection Details:
 +
{| class="wikitable"
 +
|-
 +
|Matrix-RGBLED || NanoPC-T2
 +
|-
 +
|R    || Pin15
 +
|-
 +
|G    || Pin16
 +
|-
 +
|B    || Pin17
 +
|-
 +
|V    || Pin29
 +
|-
 +
|G    || Pin30
 +
|}
 +
 
 +
==Compile & Run Test Program==
 +
Boot your ARM board with Debian and copy the matrix code:
 +
<syntaxhighlight lang="bash">
 +
$ apt-get update && apt-get install git
 +
$ git clone https://github.com/friendlyarm/matrix.git
 +
</syntaxhighlight>
 +
If your cloning is done successfully a "matrix" directory will be generated.
 +
 
 +
Compile and install Matrix:
 +
<syntaxhighlight lang="bash">
 +
$ cd matrix
 +
$ make && make install
 +
</syntaxhighlight>
 +
 
 +
Run test program:
 +
<syntaxhighlight lang="bash">
 +
$ matrix-rgb_led
 +
</syntaxhighlight>
 +
Note: this module is not plug and play therefore before running the module please make sure it is connected to an ARM board.<br>
 +
Here is what you should observe:<br>
 +
<syntaxhighlight lang="bash">
 +
Set RGB LED: 0
 +
Set RGB LED: 1
 +
Set RGB LED: 2
 +
Set RGB LED: 3
 +
Set RGB LED: 4
 +
Set RGB LED: 5
 +
Set RGB LED: 6
 +
Set RGB LED: 7
 +
</syntaxhighlight>
 +
You will see the LED displaying different colors.
 +
 
 +
==Code Sample==
 +
This Matrix code sample can work with all the ARM boards mentioned in this module's wiki. The name of this code sample is "matrix-rgb_led". Here is its source code:
 +
<syntaxhighlight lang="c">
 +
int main(int argc, char ** argv)
 +
{
 +
    int ret = -1;
 +
    int val, board;
 +
 
 +
    if ((board = boardInit()) < 0) {
 +
        printf("Fail to init board\n");
 +
        return -1;
 +
    }
 +
    if (board == BOARD_NANOPI_T2) {
 +
        ledPin1 = GPIO_PIN(15);
 +
        ledPin2 = GPIO_PIN(16);
 +
        ledPin3 = GPIO_PIN(17);
 +
    }
 +
    if ((ret = exportGPIOPin(ledPin1)) == -1) {
 +
        printf("exportGPIOPin(%d) failed\n", ledPin1);
 +
    }
 +
    if ((ret = setGPIODirection(ledPin1, GPIO_OUT)) == -1) {
 +
        printf("setGPIODirection(%d) failed\n", ledPin1);
 +
    }
 +
    if ((ret = exportGPIOPin(ledPin2)) == -1) {
 +
        printf("exportGPIOPin(%d) failed\n", ledPin2);
 +
    }
 +
    if ((ret = setGPIODirection(ledPin2, GPIO_OUT)) == -1) {
 +
        printf("setGPIODirection(%d) failed\n", ledPin2);
 +
    }
 +
    if ((ret = exportGPIOPin(ledPin3)) == -1) {
 +
        printf("exportGPIOPin(%d) failed\n", ledPin3);
 +
    }
 +
    if ((ret = setGPIODirection(ledPin3, GPIO_OUT)) == -1) {
 +
        printf("setGPIODirection(%d) failed\n", ledPin3);
 +
    }
 +
    signal(SIGINT, intHandler);
 +
    for (val = 0; val < 8; val++) {
 +
        printf("Set RGB LED: %x\n", val);
 +
        setRGBLED(val);
 +
        usleep(1000 * 1000);
 +
    }
 +
    unexportGPIOPin(ledPin1);
 +
    unexportGPIOPin(ledPin2);
 +
    unexportGPIOPin(ledPin3);
 +
    return 0;
 +
}
 +
</syntaxhighlight>
 +
For more details about this APIs called in this code sample refer to [[Matrix API reference manual]] <br>
  
−
==下载Matrix源码==
+
==Resources==
  
−
==与NanoPi 2连接使用==
+
==Update Log==
 +
===June-24-2016===
 +
* Created English wiki

Latest revision as of 14:54, 24 June 2016

查看中文

1 Introduction

Matrix-RGB LED.png
  • The Matrix-RGB_LED is a RGB LED module. It has a 2.54mm pitch pin-header in which 5V is power supply, GND is ground, and R,G,B are connected to the LED’s red, green and blue pins.
  • The inputs to Pin R, G and B can be either GPIO signals or PWM signals. The signal level can be either 3.3V or 5V. When the inputs to Pin R,G and B are high the LED will be the brightest.When the inputs to Pin R,G and B are low the LED will be completely off. When the inputs are PWM signals the LED's brightness can be controlled by controlling the PWM's duty cycle.

2 Features

  • GPIO or PWM input, 3.3/5V, LED lightness controllable via PWM
  • Small
  • 2.54 mm pitch pin-header
  • PCB dimension(mm): 16 x 24

Matrix-RGB LED PCB.png

  • Pin Description:
Pin Description
GND Ground
5V Supply Voltage 5V
R Red
G Green
B Blue

3 Basic Device Operation

  • In the RGB_LED module three one-color LEDs(one red,one green and one blue) are housed in a single package.These three LEDs share one common anode or cathode.When applying control signals to the other three leads their corresponding LEDs will be on. When two or three LEDs are on simultaneously a different color will be produced.You can produce different colors by adjusting PWM signals' duty cycle.

4 Applications

4.1 Connect to NanoPi M1

Refer to the following connection diagram to connect the module to the NanoPi M1:
Matrix-RGBLED_nanopi_m1

Connection Details:

Matrix-RGBLED NanoPi M1
R Pin7
G Pin8
B Pin10
V Pin4
G Pin6

4.2 Connect to NanoPi 2

Refer to the following connection diagram to connect the module to the NanoPi 2:
Matrix-RGB_LED_nanopi2

Connection Details:

Matrix-RGBLED NanoPi 2
R Pin7
G Pin8
B Pin10
V Pin4
G Pin6

4.3 Connect to NanoPi M2 / NanoPi 2 Fire

Refer to the following connection diagram to connect the module to the NanoPi M2/ NanoPi 2 Fire.
Matrix-RGBLED_nanopi_m2

Connection Details:

Matrix-RGBLED NanoPi M2
R Pin7
G Pin8
B Pin10
V Pin4
G Pin6

4.4 Connect to NanoPC-T2

Refer to the following connection diagram to connect the module to the NanoPC-T2:
Matrix-RGBLED_NanoPC-T2

Connection Details:

Matrix-RGBLED NanoPC-T2
R Pin15
G Pin16
B Pin17
V Pin29
G Pin30

5 Compile & Run Test Program

Boot your ARM board with Debian and copy the matrix code: 

$ apt-get update && apt-get install git
$ git clone https://github.com/friendlyarm/matrix.git

If your cloning is done successfully a "matrix" directory will be generated.

Compile and install Matrix: 

$ cd matrix
$ make && make install

Run test program: 

$ matrix-rgb_led

Note: this module is not plug and play therefore before running the module please make sure it is connected to an ARM board.
Here is what you should observe:

Set RGB LED: 0
Set RGB LED: 1
Set RGB LED: 2
Set RGB LED: 3
Set RGB LED: 4
Set RGB LED: 5
Set RGB LED: 6
Set RGB LED: 7

You will see the LED displaying different colors.

6 Code Sample

This Matrix code sample can work with all the ARM boards mentioned in this module's wiki. The name of this code sample is "matrix-rgb_led". Here is its source code: 

int main(int argc, char ** argv)
{
    int ret = -1;
    int val, board;
 
    if ((board = boardInit()) < 0) {
        printf("Fail to init board\n");
        return -1;
    }
    if (board == BOARD_NANOPI_T2) {
        ledPin1 = GPIO_PIN(15);
        ledPin2 = GPIO_PIN(16);
        ledPin3 = GPIO_PIN(17);
    }
    if ((ret = exportGPIOPin(ledPin1)) == -1) {
        printf("exportGPIOPin(%d) failed\n", ledPin1);
    }
    if ((ret = setGPIODirection(ledPin1, GPIO_OUT)) == -1) {
        printf("setGPIODirection(%d) failed\n", ledPin1);
    }
    if ((ret = exportGPIOPin(ledPin2)) == -1) {
        printf("exportGPIOPin(%d) failed\n", ledPin2);
    }
    if ((ret = setGPIODirection(ledPin2, GPIO_OUT)) == -1) {
        printf("setGPIODirection(%d) failed\n", ledPin2);
    }
    if ((ret = exportGPIOPin(ledPin3)) == -1) {
        printf("exportGPIOPin(%d) failed\n", ledPin3);
    }
    if ((ret = setGPIODirection(ledPin3, GPIO_OUT)) == -1) {
        printf("setGPIODirection(%d) failed\n", ledPin3);
    }
    signal(SIGINT, intHandler);
    for (val = 0; val < 8; val++) {
        printf("Set RGB LED: %x\n", val);
        setRGBLED(val);
        usleep(1000 * 1000);
    }
    unexportGPIOPin(ledPin1);
    unexportGPIOPin(ledPin2);
    unexportGPIOPin(ledPin3);
    return 0;
}

For more details about this APIs called in this code sample refer to Matrix API reference manual

7 Resources

8 Update Log

8.1 June-24-2016

  • Created English wiki
Retrieved from "https://wiki.friendlyelec.com/wiki/index.php?title=Matrix_-_RGB_LED&oldid=6273"