Difference between revisions of "Matrix - Thermistor"

From FriendlyELEC WiKi
Jump to: navigation, search
(代码说明)
(Code Sample)
 
(3 intermediate revisions by the same user not shown)
Line 28: Line 28:
 
* The module mainly contains a thermistor. A thermistor is a type of resistor whose resistance is dependent on temperature.
 
* The module mainly contains a thermistor. A thermistor is a type of resistor whose resistance is dependent on temperature.
  
==硬件连接==
+
==Applications==
模块Matrix-Thermistor输出的是模拟信号,需要使用ADC转换模块Matrix-Analog_to_Digital_Converter将模拟信号转换为数字信号。<br>
+
The Matrix-Thermistor module outputs analog signals which can be converted to digital signals through an ADC converter e.g. the Matrix-Analog_to_Digital_Converter module.<br>
关于模块Matrix-Analog_to_Digital_Converter的使用方法可参考wiki:[[Matrix_-_Analog_to_Digital_Converter/zh|Matrix-Analog_to_Digital_Converter]]<br>
+
For more details about the Matrix-Analog_to_Digital_Converter module refer to wiki:[[Matrix_-_Analog_to_Digital_Converter]].<br>
  
===连接NanoPi M1===
+
===Connect to NanoPi M1===
参考下图连接模块:<br>
+
Refer to the following connection diagram to connect the module to the NanoPi M1:<br>
 
[[File:Matrix-Thermistor_nanopi_m1.jpg|frameless|600px|Matrix-Thermistor_nanopi_m1]]
 
[[File:Matrix-Thermistor_nanopi_m1.jpg|frameless|600px|Matrix-Thermistor_nanopi_m1]]
  
连接说明:
+
Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
Line 48: Line 48:
 
|}
 
|}
  
===连接NanoPi 2===
+
===Connect to NanoPi 2===
参考下图连接模块:<br>
+
Refer to the following connection diagram to connect the module to the NanoPi 2:<br>
 
[[File:Matrix-Thermistor_nanopi_2.jpg|frameless|600px|Matrix-Thermistor_nanopi_2]]
 
[[File:Matrix-Thermistor_nanopi_2.jpg|frameless|600px|Matrix-Thermistor_nanopi_2]]
  
连接说明:
+
Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
Line 64: Line 64:
 
|}
 
|}
  
===连接NanoPi M2 / NanoPi 2 Fire===
+
===Connect to NanoPi M2 / NanoPi 2 Fire===
NanoPi M2和NanoPi 2 Fire的40 Pin引脚定义是一模一样的,所以它们操作Matrix配件的步骤是一样的,这里仅以NanoPi M2为例。<br>
+
Refer to the following connection diagram to connect the module to the NanoPi M2/ NanoPi 2 Fire:<br>
参考下图连接模块:<br>
+
 
[[File:Matrix-Thermistor_nanopi_m2.jpg|frameless|600px|Matrix-Thermistor_nanopi_m2]]
 
[[File:Matrix-Thermistor_nanopi_m2.jpg|frameless|600px|Matrix-Thermistor_nanopi_m2]]
  
连接说明:
+
Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
Line 81: Line 80:
 
|}
 
|}
  
===连接NanoPC-T2===
+
===Connect to NanoPC-T2===
参考下图连接模块:<br>
+
Refer to the following connection diagram to connect the module to the NanoPC-T2:<br>
 
[[File:Matrix-Thermistor_NanoPC-T2.jpg|frameless|600px|Matrix-Thermistor_NanoPC-T2]]
 
[[File:Matrix-Thermistor_NanoPC-T2.jpg|frameless|600px|Matrix-Thermistor_NanoPC-T2]]
  
连接说明:
+
Connection Details:
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
Line 97: Line 96:
 
|}
 
|}
  
==编译运行测试程序==
+
==Compile & Run Test Program==
启动开发板并运行Debian系统,进入系统后克隆Matrix代码仓库:
+
Boot your ARM board with Debian and copy the matrix code:
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ apt-get update && apt-get install git
 
$ apt-get update && apt-get install git
 
$ git clone https://github.com/friendlyarm/matrix.git
 
$ git clone https://github.com/friendlyarm/matrix.git
 
</syntaxhighlight>
 
</syntaxhighlight>
克隆完成后会得到一个名为matrix的目录。
+
If your cloning is done successfully a "matrix" directory will be generated.
  
编译并安装Matrix:
+
Compile and install Matrix:
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ cd matrix
 
$ cd matrix
Line 111: Line 110:
 
</syntaxhighlight>
 
</syntaxhighlight>
  
运行测试程序:
+
Run test program:
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
$ matrix-adc
 
$ matrix-adc
 
</syntaxhighlight>
 
</syntaxhighlight>
注意:此模块并不支持热插拔,启动系统前需要确保硬件连接正确。<br>
+
Note: this module is not plug and play therefore before running the module please make sure it is connected to an ARM board.<br>
运行效果如下:<br>
+
Here is what you should observe:<br>
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
The channel0 value is 2460
 
The channel0 value is 2460
 
</syntaxhighlight>
 
</syntaxhighlight>
  
==代码说明==
+
==Code Sample==
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-analog_to_digital_converter,内容如下:
+
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-analog_to_digital_converter". Here is its source code:
 
<syntaxhighlight lang="c">
 
<syntaxhighlight lang="c">
 
int main(int argc, char ** argv)
 
int main(int argc, char ** argv)
Line 151: Line 150:
 
}
 
}
 
</syntaxhighlight>
 
</syntaxhighlight>
API说明参考维基:[[Matrix API reference manual/zh|Matrix API reference manual]] <br>
+
For more details about this APIs called in this code sample refer to [[Matrix API reference manual]] <br>
  
 
==Resources==
 
==Resources==

Latest revision as of 16:24, 24 June 2016

查看中文

1 Introduction

Thermistor
  • The Matrix-Thermistor module is a thermistor module. It has a 3 pin 2.54mm spacing pin header of which V is supply voltage, G is ground and S is output analog signal. Users can convert output analog signals to digital signals via ADC conversion.
  • To increase measured values' accuracy please make the sensor in close contact with a measured object.

2 Features

  • GPIO, 3.3/5V
  • Small
  • 2.54mm spacing pin header
  • PCB Dimension(mm): 8 x 24

Thermistor01.PCB

  • Pin Description:
Pin Description
S Analog GPIO
V Supply Voltage 5V
G Ground

3 Basic Device Operation

  • The module mainly contains a thermistor. A thermistor is a type of resistor whose resistance is dependent on temperature.

4 Applications

The Matrix-Thermistor module outputs analog signals which can be converted to digital signals through an ADC converter e.g. the Matrix-Analog_to_Digital_Converter module.
For more details about the Matrix-Analog_to_Digital_Converter module refer to wiki:Matrix_-_Analog_to_Digital_Converter.

4.1 Connect to NanoPi M1

Refer to the following connection diagram to connect the module to the NanoPi M1:
Matrix-Thermistor_nanopi_m1

Connection Details:

Matrix-Thermistor
GND NanoPi M1 Pin9
5V NanoPi M1 Pin2
S Matrix-Analog_to_Digital_Converter A0

4.2 Connect to NanoPi 2

Refer to the following connection diagram to connect the module to the NanoPi 2:
Matrix-Thermistor_nanopi_2

Connection Details:

Matrix-Thermistor
GND NanoPi 2 Pin9
5V NanoPi 2 Pin2
S Matrix-Analog_to_Digital_Converter A0

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-Thermistor_nanopi_m2

Connection Details:

Matrix-Thermistor
GND NanoPi M2 Pin9
5V NanoPi M2 Pin2
S Matrix-Analog_to_Digital_Converter A0

4.4 Connect to NanoPC-T2

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

Connection Details:

Matrix-Potentiometer
GND NanoPC-T2 USB Host GND
5V  NanoPC-T2 USB Host 5V
S Matrix-Analog_to_Digital_Converter A0

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-adc

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:

The channel0 value is 2460

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-analog_to_digital_converter". Here is its source code:

int main(int argc, char ** argv)
{
    int i = 0;
    int value = 0;
    int channel = 0;
 
    if (boardInit() < 0) {
        printf("Fail to init board\n");
        return -1;
    }
 
    if (argc == 2)
        channel = atoi(argv[1]);
    system("modprobe "DRIVER_MODULE);
    signal(SIGINT, intHandler);
    for (i=0; i<ADC_READ_TIMES; i++) {
        if (pcf8591Read(channel, &value) != -1) {
            printf("The channel%d value is %d\n", channel, value);
        } else {
            printf("Fail to get channel%d value\n", channel);
        }
    }
    system("rmmod "DRIVER_MODULE);
 
    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-25-2016

  • Re-organized and simplified wiki