127 lines
3.2 KiB
Plaintext
127 lines
3.2 KiB
Plaintext
j'ai reussi a faire fonctionner le petit clavier et le lcd
|
|
les 2 ecrans fonctionnent
|
|
pour le back light qui ne s'allume pas j'ai fait l'essai avec une frontale sur le coté
|
|
je vais faire eclairer la led autrement
|
|
le transistor doit être mort
|
|
|
|
attention au réglage potentiometre de la polarisation
|
|
V0 doit être vers 1.10 volt
|
|
|
|
|
|
// select the pins used on the LCD panel
|
|
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
|
|
et non pas 8 9 7 6 5 4
|
|
|
|
https://www.dfrobot.com/wiki/index.php/Arduino_LCD_KeyPad_Shield_(SKU:_DFR0009)
|
|
Old libraries for V1:
|
|
LCDKeypad
|
|
DFR_Key
|
|
|
|
http://image.dfrobot.com/image/data/DFR0009/LCDKeypad%20Shield%20V1.0%20SCH.pdf
|
|
https://www.dfrobot.com/wiki/images/a/a7/LCDKeypad_Shield_SCH.png
|
|
https://www.youtube.com/watch?v=D6iaUeJPMc0
|
|
|
|
Example use of LiquidCrystal library
|
|
___________
|
|
//Sample using LiquidCrystal library
|
|
#include <LiquidCrystal.h>
|
|
|
|
/*******************************************************
|
|
|
|
This program will test the LCD panel and the buttons
|
|
Mark Bramwell, July 2010
|
|
|
|
********************************************************/
|
|
|
|
// select the pins used on the LCD panel
|
|
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
|
|
|
|
// define some values used by the panel and buttons
|
|
int lcd_key = 0;
|
|
int adc_key_in = 0;
|
|
#define btnRIGHT 0
|
|
#define btnUP 1
|
|
#define btnDOWN 2
|
|
#define btnLEFT 3
|
|
#define btnSELECT 4
|
|
#define btnNONE 5
|
|
|
|
// read the buttons
|
|
int read_LCD_buttons()
|
|
{
|
|
adc_key_in = analogRead(0); // read the value from the sensor
|
|
// my buttons when read are centered at these valies: 0, 144, 329, 504, 741
|
|
// we add approx 50 to those values and check to see if we are close
|
|
if (adc_key_in > 1000) return btnNONE; // We make this the 1st option for speed reasons since it will be the most likely result
|
|
// For V1.1 us this threshold
|
|
if (adc_key_in < 50) return btnRIGHT;
|
|
if (adc_key_in < 250) return btnUP;
|
|
if (adc_key_in < 450) return btnDOWN;
|
|
if (adc_key_in < 650) return btnLEFT;
|
|
if (adc_key_in < 850) return btnSELECT;
|
|
|
|
// For V1.0 comment the other threshold and use the one below:
|
|
/*
|
|
if (adc_key_in < 50) return btnRIGHT;
|
|
if (adc_key_in < 195) return btnUP;
|
|
if (adc_key_in < 380) return btnDOWN;
|
|
if (adc_key_in < 555) return btnLEFT;
|
|
if (adc_key_in < 790) return btnSELECT;
|
|
*/
|
|
|
|
|
|
return btnNONE; // when all others fail, return this...
|
|
}
|
|
|
|
void setup()
|
|
{
|
|
lcd.begin(16, 2); // start the library
|
|
lcd.setCursor(0,0);
|
|
lcd.print("Push the buttons"); // print a simple message
|
|
}
|
|
|
|
void loop()
|
|
{
|
|
lcd.setCursor(9,1); // move cursor to second line "1" and 9 spaces over
|
|
lcd.print(millis()/1000); // display seconds elapsed since power-up
|
|
|
|
|
|
lcd.setCursor(0,1); // move to the begining of the second line
|
|
lcd_key = read_LCD_buttons(); // read the buttons
|
|
|
|
switch (lcd_key) // depending on which button was pushed, we perform an action
|
|
{
|
|
case btnRIGHT:
|
|
{
|
|
lcd.print("RIGHT ");
|
|
break;
|
|
}
|
|
case btnLEFT:
|
|
{
|
|
lcd.print("LEFT ");
|
|
break;
|
|
}
|
|
case btnUP:
|
|
{
|
|
lcd.print("UP ");
|
|
break;
|
|
}
|
|
case btnDOWN:
|
|
{
|
|
lcd.print("DOWN ");
|
|
break;
|
|
}
|
|
case btnSELECT:
|
|
{
|
|
lcd.print("SELECT");
|
|
break;
|
|
}
|
|
case btnNONE:
|
|
{
|
|
lcd.print("NONE ");
|
|
break;
|
|
}
|
|
}
|
|
|
|
}
|