Hey everyone, thanks for your help in advance!
I’m just looking for some advice:
I am working on a concept for a geocache and am stuck. I have been working on this for over a week off and on and am going around in circles. I have researched this extensively and have not been able to find a good solution.
I am using an Arduino Mega hooked up to a keypad and a 2.8 tft screen (http://www.seeedstudio.com/depot/28-TFT-Touch-Shield-p-864.html). The Arduino will then be plugged into a Raspberry Pi.
The basic concept will be:
The user inputs 4 different three digit codes into the key pad. Once the passwords are confirmed, the Arduino prompts the user for their 10 digit cell phone number. The number is then passed to the Raspberry pi, turns a pin on the GPIO to high, and a text message is sent to the user’s phone.
I have gotten the TFT screen to display the instructions. I have gotten the keypad to work. When I attempt to combine the two codes, the instructions cycle within the loop statement.
I just tried the following and I know it looks like gibberish but I got the screen to stop cycling.
I have looked at the examples from keypad, password, tft, and many other libraries. But I have yet to find an example showing how to display an input from a keypad into a TFT screen.
How would you do this?
Thanks again for your time!
#include <Password.h>
#include <Keypad.h>
#include <stdint.h>
#include <TouchScreen.h>
#include <TFT.h>
Password password = Password( "A123B456C789D000" );
const byte ROWS = 4; // Four rows
const byte COLS = 4; // columns
// Define the Keymap
char keys[ROWS][COLS] =
{
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'}
};
byte rowPins[ROWS] = { 35,37,39,41 };// Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins.
byte colPins[COLS] = { 49,51,53,52, };// Connect keypad COL0, COL1 and COL2 to these Arduino pins.
const int buttonPin = 7;
int buttonState = 0;
//Create the Keypad
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
#ifdef SEEEDUINO
#define YP A2 // must be an analog pin, use "An" notation!
#define XM A1 // must be an analog pin, use "An" notation!
#define YM 14 // can be a digital pin, this is A0
#define XP 17 // can be a digital pin, this is A3
#endif
#ifdef MEGA
#define YP A2 // must be an analog pin, use "An" notation!
#define XM A1 // must be an analog pin, use "An" notation!
#define YM 54 // can be a digital pin, this is A0
#define XP 57 // can be a digital pin, this is A3
#endif
void setup()
{
Serial.begin(9600);
keypad.addEventListener(keypadEvent); //add an event listener for this keypad
keypad.setDebounceTime(250);
}
void loop()
{
Tft.init(); //init TFT library
Tft.drawString("Geocache Instructions",0,0,1,RED);
userInputOne();
userInputTwo();
}
void keypadEvent(KeypadEvent eKey)
{
Tft.init();
switch (keypad.getState())
{
case PRESSED:
Serial.print("Pressed: ");
Serial.println(eKey);
switch (eKey)
{
case '#': checkPassword(); break;
// case '#': password.reset(); break;
// default: password.append(eKey);
}
}
}
void checkPassword()
{
if (password.evaluate())
{
Serial.println("Success");
//Add code to run if it works
}
else
{
Serial.println("Wrong");
//add code to run if it did not work
}
}
void userInputOne()
{
Tft.drawString("For the final coordinates:",0,20,1,WHITE);
Tft.drawString("Press A followed by",0,30,1,WHITE);
Tft.drawString("3 digit code from stage 1",0,40,1,WHITE);
//keypad.getKey();
password.append(keypad.getKey());
password.append(keypad.getKey());
while(password.evaluate() == 0)
{
char eKey;
char keypadEvent(KeypadEvent eKey);
Tft.drawChar(eKey,0,110,1,WHITE);
} // do nothing
}
void userInputTwo()
{
Tft.drawString("For the final coordinates:",0,20,1,WHITE);
Tft.drawString("Press B followed by",0,30,1,WHITE);
Tft.drawString("3 digit code from stage 2",0,40,1,WHITE);
keypad.getKey();
}
void userInputThree()
{
Tft.drawString("For the final coordinates:",0,20,1,WHITE);
Tft.drawString("Press C followed by",0,30,1,WHITE);
Tft.drawString("3 digit code from stage 3",0,40,1,WHITE);
keypad.getKey();
}
void userInputFour()
{
Tft.drawString("For the final coordinates:",0,20,1,WHITE);
Tft.drawString("Press D followed by",0,30,1,WHITE);
Tft.drawString("3 digit code from stage 4",0,40,1,WHITE);
keypad.getKey();
}
void userInputCell()
{
Tft.drawString("Please enter your ",0,200,1,WHITE);
Tft.drawString("10 digit cellphone number",0,210,1,WHITE);
keypad.getKey();
}