Difference between revisions of "Matrix - I2C LCD1602"
From FriendlyELEC WiKi
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(→使用方法) |
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* 2.54 mm spacing pin | * 2.54 mm spacing pin | ||
| − | == | + | ==How To== |
| − | === | + | ===Connection=== |
| − | * | + | *Connect Tiny4412 SDK (1506) |
| − | ::GND: | + | ::GND: Ground |
| − | ::VCC: | + | ::VCC: 5V |
| − | ::SDA: I2C SDA | + | ::SDA: I2C SDA |
| − | ::SCL: I2C SCL | + | ::SCL: I2C SCL |
| − | === | + | ===Code Sample in C Under Linux=== |
<syntaxhighlight lang="c"> | <syntaxhighlight lang="c"> | ||
#include <stdio.h> | #include <stdio.h> | ||
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</syntaxhighlight> | </syntaxhighlight> | ||
| − | === | + | ===Compile and Run=== |
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
git clone http://github.com/friendlyarm/fa-hardware.git | git clone http://github.com/friendlyarm/fa-hardware.git | ||
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make | make | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | + | Copy your compiled bin to your board and you are ready to go. | |
==相关资料== | ==相关资料== | ||
Revision as of 08:09, 5 August 2015
Contents
1 Introduction
This is an LCD module which has an I2C controller. It can display 16 x 2 characters. Its interface is parallel. To simplify its application we designed a controller on this module, which interfaces with other modules through I2C and transfers received signals to parallel signals to LCD1602. It can display, turn on and off back light.
2 Features
- I2C interface. It can display characters, and turn on and off back light
- 2.54 mm spacing pin
3 How To
3.1 Connection
- Connect Tiny4412 SDK (1506)
- GND: Ground
- VCC: 5V
- SDA: I2C SDA
- SCL: I2C SCL
3.2 Code Sample in C Under Linux
#include <stdio.h> #include <unistd.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <stdlib.h> #include "libfahw.h" void test(char* line1, char* line2) { int devFD; if ((devFD = LCD1602Init()) == -1) { printf("Fail to init LCD1602\n"); return; } if (LCD1602Clear(devFD) == -1) { printf("Fail to Clear\n"); return; } if (LCD1602DispLines(devFD, line1, line2) == -1) { printf("Fail to Display String\n"); return ; } LCD1602DeInit(devFD); } int main(int argc, char ** argv) { int i; for (i=0; i<10; i++) { test("FriendlyARM", "From 2003"); sleep(3); } return 0; }
3.3 Compile and Run
git clone http://github.com/friendlyarm/fa-hardware.git cd fa-hardware cd demo cd matrix-i2c_lcd1602 make
Copy your compiled bin to your board and you are ready to go.
