Matrix - Compact Kit

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Introduction

Matrix-Compact Kit.png
  • The Matrix-Compact Kit is a compact board with various hardware resources, interfaces and ports. It includes user keys, LED, buzzer, ADC, compass, temperature sensor, IR receiver, TFT port and etc. This board can be connected to the NanoPi, NanoPi 2 and Raspberry Pi via its 40 pin header. In addition you can connect other external modules to its GPIOs.

Features

  • PCB Dimension(mm):

Matrix-Compact Kit PCB.png

Matrix-Compact_Kit Layout
  • 40pin female connector's GPIO Pin Spec
Pin# Name Pin# Name
1 VDD_SYS_3.3V 2 VDD_5V
3 I2C0_SDA 4 VDD_5V
5 I2C0_SCL 6 DGND
7 GPIOB28 8 UART3_TXD
9 DGND 10 UART3_RXD
11 GPIOB29 12 GPIOB26
13 GPIOB30 14 DGND
15 GPIOB31 16 PWM2
17 VDD_SYS_3.3V 18 GPIOB27
19 SPI0_MOSI 20 DGND
21 SPI0_MISO 22 PWM0
23 SPI0_CLK 24 SPI0_CS
25 DGND 26 PWM1
27 I2C1_SDA 28 I2C1_SCL
29 GPIOC8 30 DGND
31 SPI2_CLK 32 GPIOC28
33 SPI2_CS 34 DGND
35 SPI2_MOSI 36 GPIOC7
37 SPI2_MISO 38 ALIVEGPIO2
39 DGND 40 ALIVEGPIO3
Matrix-Compact_Kit Layout
  • 30pin Pin Spec
Pin# Name Pin# Name Pin# Name
1 GND 2 VDD_5V 3 A1_PCF
4 GND 5 VDD_5V 6 A2_PCF
7 GND 8 VDD_5V 9 A3_PCF
10 GND 11 VDD_5V 12 D1_Pi11
13 GND 14 VDD_5V 15 D2_Pi26
16 GND 17 VDD_5V 18 D3_Pi16
19 GND 20 VDD_5V 21 D4_Pi19
22 GND 23 VDD_5V 24 D5_Pi21
25 GND 26 VDD_5V 27 D6_Pi23
28 GND 29 VDD_5V 30 D7_Pi24
18B20 & IR Receiver Layout
  • 18B20 & IR Receiver Pin Spec
Module Pin# Name Pin# Name Pin# Name
18B20 1 VDD_5V 2 DATA 3 GND
IR Receiver 1 DATA 2 GND 3 VDD_5V

Applications

Connect to NanoPi 2

Refer to the following connection diagram to connect the module to the NanoPi 2:
Matrix-Compact_Kit_nanopi2

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-compact_kit

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:

LED blinking 1
LED blinking 2
Button:  1 1 1
ADC channel0: 550
Compass angle: 328.5
Pwm start
Pwm stop

Run Qt program to test the TFT LCD:

cd matrix/demo/nanopi-status
./build.sh
./run.sh /dev/fb-st7735s

The program will present the system's basic information:
st7735s-status

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-compact_kit". Here is its source code:

int main(int argc, char ** argv)
{
    int board;
 
    if ((board = boardInit()) < 0) {
        printf("Fail to init board\n");
        return -1;
    }
    testLED(board);
    readButton();
    readADC();
    readCompass();
    testPWM(board);
    // readTemp();
    // testIR();
 
    return 0;
}

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

Code Samples in Python

The Python version is 2.7.9 in the following samples
Install the Python libraries and modules:

$ apt-get install Python-dev libi2c-dev

The python code is in our github:

$ git clone https://github.com/friendlyarm/matrix-python.git

After it is done a matrix-python directory will be generated.

Access LED:

$ cd matrix-python/Matrix.GPIO
$ python setup.py install
$ python test/matrix_output.py 33

The red LED will be flashing.

Read KEY1:

$ cd matrix-python/Matrix.GPIO
$ python setup.py install
$ python test/matrix_input.py 36

When you press KEY1 "value" will be set to 0. When you release KEY1 "value" will be set to 1.

Test AD:

$ cd matrix-python/modules
$ modprobe pcf8591
$ cd ../Matrix.pcf8591
$ python setup.py install
$ python test/matrix_adc.py

When you change the resistor AD value will be changed accordingly.

Test Compass:

$ cd matrix-python/Matrix.I2C
$ python setup.py install
$ python test/matrix_compass.py

When you rotate the compass you will get changing direction values.


Resources

Update Log

Feb-17-2016

  • Added 5.9, 5.10 and 5.11

Feb-24-2016

  • Added the driver's source code location in Section 5.2

Mar-21-2016

  • Corrected typo in Section 5.9
  • Added lib installation steps in Section 5.11

Mar-29-2016

  • Corrected expression errors

June-19-2016

  • Re-organized and simplified wiki