Matrix - Compact Kit
Contents
1 Introduction
- 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.
2 Features
- PCB Dimension(mm):
- 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
- 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 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
3 Applications
3.1 Connect to NanoPi 2
Please refer to the following connection diagram to connect the module to the NanoPi 2:
4 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:
5 代码说明
所有的开发板都共用一套Matrix代码,本模块的测试示例代码为matrix-compact_kit,内容如下:
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; }
API说明参考维基:Matrix API reference manual
6 通过Python控制
使用的Python版本为2.7.9。
克隆Matrix配件Python相关的库之前,需要先确保你的板可正常上网,并且已经安装好git;接着执行以下步骤安装Python相关的库文件
$ apt-get install Python-dev libi2c-dev
在开发板Debian系统上克隆matrix-python仓库:
$ git clone https://github.com/friendlyarm/matrix-python.git
克隆完成后会得到一个名为matrix-python的目录。
控制LED:
$ cd matrix-python/Matrix.GPIO $ python setup.py install $ python test/matrix_output.py 33
可以看到红色LED闪烁了一下。
读按键KEY1:
$ cd matrix-python/Matrix.GPIO $ python setup.py install $ python test/matrix_input.py 36
当KEY1按下时value=0,KEY1弹起时value=1。
测试AD转换:
$ cd matrix-python/modules $ modprobe pcf8591 $ cd ../Matrix.pcf8591 $ python setup.py install $ python test/matrix_adc.py
通过旋转可调电阻可以改变AD转换值。
测试指南针:
$ cd matrix-python/Matrix.I2C $ python setup.py install $ python test/matrix_compass.py
通过改变开发板的朝向可以获得不同的方向值。
7 Resources
- [Schematic](Matrix - Compact Kit-Schematic.pdf)
- [Schematic](Matrix - Compact Kit-Schematic.pdf)
- [0.9'LCD datasheet](Matrix - Compact Kit-0.9'LCD datasheet.pdf)
8 Update Log
8.1 Feb-17-2016
- Added 5.9, 5.10 and 5.11
8.2 Feb-24-2016
- Added the driver's source code location in Section 5.2
8.3 Mar-21-2016
- Corrected typo in Section 5.9
- Added lib installation steps in Section 5.11
8.4 Mar-29-2016
- Corrected expression errors