Yoyojacky: Yoyojacky moved page RPI-B+-GPIO-Triple(English) to GPIO EoF-003

2021-08-27T10:57:17Z

Yoyojacky moved page RPI-B+-GPIO-Triple(English) to GPIO EoF-003

← Older revision	Revision as of 18:57, 27 August 2021
(No difference)

Yoyojacky: /* Shop */

2016-09-23T07:03:45Z

Shop

← Older revision		Revision as of 15:03, 23 September 2016
Line 186:		Line 186:
	</pre>		</pre>

	~~==Shop==~~
	==Attachment==		==Attachment==
	<div id="tech1"></div>		<div id="tech1"></div>
	<br>[[media:TC1602A-01T.pdf\|LCD manuals]]		<br>[[media:TC1602A-01T.pdf\|LCD manuals]]
	<br>[[media:Lcd1602_rgb.zip\|demo code]]		<br>[[media:Lcd1602_rgb.zip\|demo code]]

Yoyojacky: /* Learn */

2016-07-15T07:15:08Z

Learn

New page

=Raspberry Pi GPIO Triple Expand Board=
==Description==
The "raspberry Pi GPIO Triple Expand Board" used for Raspberry Pi can copy Raspberry Pi's GPIO pin to the number of three ,in this case ,you do not worry about that some GPIO
pins been occupied by external sensor modules ,you have three times of Raspberry Pi's GPIO pins
<br>[[Image:One to three 01.jpg|700px|center]]

==Overview==
<br>[[Image:One02.jpg|700px]]
<br>[[Image:One03.jpg|700px]]

==Schematic==
[[Image:1602test1.png|1000px]]
==LCD module scale==
<br>[[Image:rgb1602_show3.JPG|1000px]]
<br>[[Image:One4.png|1100px]]

==RGB1602 pin description==
{| width="998" cellspacing="0" border="1" cellspacing="0"
|-
! align="center" scope="col" style="width: 40%" | pin number
! align="center" scope="col" | chart
! align="center" scope="col" | function
|-
| align="center" scope="row" | 1
| align="center" | Vss
| align="center" | GND
|-
| align="center" scope="row" | 2
| align="center" | Vdd
| align="center" | Voltage supply
|-
|align="center" scope="row" | 3
| align="center" | Vo
| align="center" | LCD contrast
|-
| align="center" scope="row" | 4
| align="center" | RS
| align="center" | register select
|-
| align="center" scope="row" | 5
| align="center" | R/W
| align="center" | read or write select
|-
| align="center" scope="row" | 6
| align="center" | E
| align="center" | enable
|-
| align="center" scope="row" | 7
| align="center" | DB0
| align="center" | data pin 0
|-
| align="center" scope="row" | 8
| align="center" | DB1
| align="center" | data pin 1
|-
| align="center" scope="row" | 9
| align="center" | DB2
| align="center" | data pin 2
|-
| align="center" scope="row" | 10
| align="center" | DB3
| align="center" | data pin 3
|-
| align="center" scope="row" | 11
| align="center" | DB4
| align="center" | data pin 4
|-
| align="center" scope="row" | 12
| align="center" | DB5
| align="center" | data pin 5
|-
| align="center" scope="row" | 13
| align="center" | DB6
| align="center" | data pin 6
|-
| align="center" scope="row" | 14
| align="center" | DB7
| align="center" | daata pin 7
|-
| align="center" scope="row" | 15
| align="center" | LEDA
| align="center" | LED backlight voltage supply
|-
| align="center" scope="row" | 16
| align="center" | LEDR
| align="center" | red LED backlight control
|-
| align="center" scope="row" | 17
| align="center" | LEDG
| align="center" | green LED backlight control
|-
| align="center" scope="row" | 18
| align="center" | LEDB
| align="center" | blue LED backlight control
|-
|}
<br>[[Image:1602_RGB_test3.png|1000px]]
==Learn==
*If it's the first time for you to use Raspberry Pi, please make sure the I2C interface is enabled. This page will show you how to enable the I2C interface. http://www.52pi.net/forum.php?mod=viewthread&tid=1363&highlight=rtc
*You also need to install wiringPi library. This page will show you how to install wiringPi. http://wiringpi.com/download-and-install/
*If you are done install the wiringPi and enabling I2C interface, type the following code in the console to build a .c file<br>
<code>sudo vim.tiny lcd1602.c</code>
<br>[[Image:1602_tech1.png|800px]]
*Copy and paste the following [[#tech1|demo code]] into lcd1602.c
[[File:1602_tech2.png|800px]]
*Under the vim.tiny editor, type ":", then type "wq" and press "enter" to save the lcd1602.c file and exit editor
[[File:1602_tech3.png|600px]]
*Next you need to compile the code using gcc. <br>
<code>gcc lcd1602.c -lwiringPi /home/pi/wiringPi/devLib/lcd.o -o lcd1602</code><br>
[[File:1602_tech5.png|800px]]
*You should find an executable file named "lcd1602" if the last step was completed. Type the following code <code>sudo modprobe i2c-dev</code> to load the I2C interface
[[File:1602_tech6.png|800px]]
<br>[[File:1602_tech8.png|600px]]
*Lastly, type <code>sudo ./lcd1602</code> , and the module will be displaying the demo text, as the following photo shows.
[[File:1602_tech9.png|800px]]
<br>[[File:show2.JPG|800px]]
*This is a gif showing the different backlight colors
<br>[[File:show1.gif|800px]]

==Demo Code ==
<div id="tech1"></div>
<pre>
#include <stdio.h> //include standard input output head file
#include <wiringPi.h> //include wiringpi
#include <mcp23017.h> //include mcp23017 control head file
#include <lcd.h> //include LCD control head file
#include <softPwm.h> //include PWM control head file
int main()
{
long value=0;
int rand_num;
int value_blue; //the blue backlight brightness
int value_red; //the red backlight brightness
int value_green; //the green backlight brightness
int display,i,count;
wiringPiSetup(); //init wiringPi
mcp23017Setup (100, 0x20); //init mcp23017 chip I2C address: 0x20,the first pin number: 100
printf ("Raspberry Pi - MCP23017 Test\n"); //print information
for(i=0;i<16;i++)
pinMode(100+i,OUTPUT); //set pin 100 - 115 as output
digitalWrite(101,0); //set pin 101 low voltage
display=lcdInit(2,16,4,100,102,103,104,105,106,0,0,0,0); //lcd init 2*16,4 bit control,use 100,101,102,103,104 pin as control pin
lcdHome(display); //reset cursor
lcdClear(display); //clear screen
lcdPosition(display,0,0); //set display location (0,0)
lcdPuts(display,"Hello World"); //print string "Hello World"
lcdPosition(display,0,1); //set display location(0,1)
lcdPuts(display,"www.52pi.net"); //print string "www.52pi.net"
pinMode(0, OUTPUT); //set Raspberry pi pin 0 as output
pinMode(2, OUTPUT); //set Raspberry Pi pin 2 as output
pinMode(3, OUTPUT); //set Raspberry Pi pin 3 as output
softPwmCreate (3, 50, 100); //set soft PWM pin 3 PWM scale (0-100) original 50
softPwmCreate (2, 50, 100); //set soft PWM pin 2 PWM scale (0-100) original 50
softPwmCreate (0, 50, 100); //set soft PWM pin 0 PWM scale (0-100) original 50
while(1) //always display
{

delay(200); //delay 200ms
value_red=(value<100)?value:0; //0-100 red change
value_green=(value>100&&value<200)?(value-100):0; //100-200 green change
value_blue=(value>200)?(value-200):0; //200-300 blue change
if(value>300) //>300 random colour
{
value_red=rand()%100;
value_green=rand()%100;
value_blue=rand()%100;
}
//rand_num=rand();
softPwmWrite (3,value_red); //soft PWM control red backlight
softPwmWrite (2,value_green); //soft PWM control green backlight
softPwmWrite (0,value_blue); //soft PWM control blue backlight

value++;
if(value>900) //if value >900 return
{
value=0;
}

lcdPosition(display,13,1);
lcdPrintf(display,"%d",value); //print number value
//value_blue=0;

}
}

</pre>

==Shop==
==Attachment==
<div id="tech1"></div>
<br>[[media:TC1602A-01T.pdf|LCD manuals]]
<br>[[media:Lcd1602_rgb.zip|demo code]]

GPIO EoF-003 - Revision history

Yoyojacky: Yoyojacky moved page RPI-B+-GPIO-Triple(English) to GPIO EoF-003

Yoyojacky: /* Shop */

Yoyojacky: /* Learn */