Daniel Begasse
ECE 4180 Final Project
Dependencies: 4DGL-uLCD-SE mbed
main.cpp
- Committer:
- dbegasse
- Date:
- 2015-12-02
- Revision:
- 0:69cae396d104
- Child:
- 1:f7383e13e64f
File content as of revision 0:69cae396d104:
//Daniel Begasse
//ECE 4180 Final Project
#include "mbed.h"
#include "uLCD_4DGL.h"
#include <stdio.h>
#include <stdlib.h>
#include <mpr121.h>
#include <vector>
#include <iostream>
#include <string>
using namespace std;
//Set up the interrupt pin
InterruptIn interrupt(p26);
// Setup the i2c bus on pins 9 and 10
I2C i2c(p9, p10);
// constructor(i2c object, i2c address of the mpr121)
Mpr121 mpr121(&i2c, Mpr121::ADD_VSS);
//create a global lcd project
uLCD_4DGL uLCD(p28, p27, p30);
// Setup the Serial to the PC for debugging
Serial pc(USBTX, USBRX);
//Setup the timer
//Timer t;
volatile bool tripped = false;
volatile bool validkey;//This represents if the key pressed was a valid key
volatile int oldpressed;//This is the previous key that was pressed
volatile int value;//This is the value coming in from the register
volatile int pressed;//This is the current key being pressed
volatile int pressedcount = 0;//This is how many times the current key has been repeatedly pressed
int cursor_row = 0;
int cursor_col = 0;
char message[100];
int char_count = 0;//This is the number of times the space button has been pressed for the current message
char key_1[1] = {'1'};
char key_2[4] = {'a','b','c','2'};
char key_3[4] = {'d','e','f','3'};
char key_4[4] = {'g','h','i','4'};
char key_5[4] = {'j','k','l','5'};
char key_6[4] = {'m','n','o','6'};
char key_7[5] = {'p','q','r','s','7'};
char key_8[4] = {'t','u','v','8'};
char key_9[5] = {'w','x','y','z','9'};
char key_10[1] = {' '};
void fallInterrupt() {
validkey = false;//Each key pressed is invalid until proven to be valid
value = mpr121.read(0x00);
value += mpr121.read(0x01)<<8;
//pc.printf("Value: %x \r\n", value);
//Take the value from the register and use it to assign a key #
switch(value){
case (0x1):
pressed = 10;
validkey = true;
break;
case (0x10):
pressed = 11;
validkey = true;
break;
case (0x100):
pressed = 12;
validkey = true;
break;
case (0x2):
pressed = 7;
validkey = true;
break;
case (0x20):
pressed = 8;
validkey = true;
break;
case (0x200):
pressed = 9;
validkey = true;
break;
case (0x4):
pressed = 4;
validkey = true;
break;
case (0x40):
pressed = 5;
validkey = true;
break;
case (0x400):
pressed = 6;
validkey = true;
break;
case (0x8):
pressed = 1;
validkey = true;
break;
case (0x80):
pressed = 2;
validkey = true;
break;
case (0x800):
pressed = 3;
validkey = true;
break;
default:
validkey = false;
break;
}
//If the two values are different, assign pressed to oldpressed
if ((pressed != oldpressed) && (validkey == true) ){
oldpressed = pressed;
pressedcount = 0;
char_count++;//move the cursor over if there is a new key
}
else if ((pressed == oldpressed) && (value != 0)) {
pressedcount++;
}
}
void checkCharacter(){
if (pressed == 1){
if (pressedcount > 0){
pressedcount = 0;
}
message[char_count] = '1';
}
if (pressed == 2){
if (pressedcount > 3){
pressedcount = 0;
}
message[char_count] = key_2[pressedcount];
}
if (pressed == 3){
if (pressedcount > 3){
pressedcount = 0;
}
message[char_count] = key_3[pressedcount];
}
if (pressed == 4){
if (pressedcount > 3){
pressedcount = 0;
}
message[char_count] = key_4[pressedcount];
}
if (pressed == 5){
if (pressedcount > 3){
pressedcount = 0;
}
message[char_count] = key_5[pressedcount];
}
if (pressed == 6){
if (pressedcount > 3){
pressedcount = 0;
}
message[char_count] = key_6[pressedcount];
}
if (pressed == 7){
if (pressedcount > 4){
pressedcount = 0;
}
message[char_count] = key_7[pressedcount];
}
if (pressed == 8){
if (pressedcount > 3){
pressedcount = 0;
}
message[char_count] = key_8[pressedcount];
}
if (pressed == 9){
if (pressedcount > 4){
pressedcount = 0;
}
message[char_count] = key_9[pressedcount];
}
if (pressed == 10) {
message[char_count] = ' ';
}
}
void printMessage(){
uLCD.locate(cursor_col ,cursor_row);
//To save time only print if the size of the array has changed
//look at char count to tell
for ( unsigned i = 0; i <= char_count; i++ ){
uLCD.printf("%c", message[i]);
}
//message[char_count + 1] = '|';
}
void printCursor(){
uLCD.text_char('|',char_count + 1, cursor_row, BLUE);
wait(.5);
uLCD.text_char('|',char_count + 1, cursor_row, BLACK);
wait(.5);
}
int main(){
pc.baud(9600);
interrupt.mode(PullUp);
wait(.001);
interrupt.fall(&fallInterrupt);
//Timer t;
while(1){
//pc.printf("Whats in the list... %c\n", message[char_count]);
checkCharacter();
//printCursor();
printMessage();
//USE A PUSH BUTTON TO MOVE THE CURSOR MANUALLY
//WHEN YOU MOVE THE CURSOR, ADD THE PREVIOUS CHARACTER TO THE MESSAGE VECTOR
//THEN WHEN YOU TRY TO SEND YOU SEND THE VECTORO
}
}