commit c2fe984ed4e6e0077747b1eb5ffa76e5a7c2fe5f
parent 3f358c19e5fe1d48285c4a9b3930a942f2f866fe
Author: Joseph Bryant <jbryant0653@floridapoly.edu>
Date: Sun, 21 Apr 2024 15:10:35 -0400
Full LCD setup with buttons A5 and A4 working!
Diffstat:
| M | lcd.c | | | 210 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------------ |
1 file changed, 146 insertions(+), 64 deletions(-)
diff --git a/lcd.c b/lcd.c
@@ -1,49 +1,60 @@
-#include <avr/io.h> //standard AVR header
-
-#define F_CPU 16000000UL // THE CPU FREQUENCY
+#include <avr/io.h> //standard AVR header
+#define F_CPU 16000000UL // THE CPU FREQUENCY
#include <util/delay.h> //delay header
-
-#define LCD_DPRT PORTD //LCD DATA PORT
-#define LCD_DDDR DDRD //LCD DATA DDR
-#define LCD_DPIN PIND //LCD DATA PIN
-#define LCD_CPRT PORTB //LCD COMMANDS PORT
-#define LCD_CDDR DDRB //LCD COMMANDS DDR
-#define LCD_CPIN PINB //LCD COMMANDS PIN
-#define LCD_RS 0 //LCD RS
-#define LCD_EN 1 //LCD EN
-
-void lcd_putValue(unsigned char val){
+#include <avr/interrupt.h> //interrupt header
+
+#define LCD_DPRT PORTD //LCD DATA PORT
+#define LCD_DDDR DDRD //LCD DATA DDR
+#define LCD_DPIN PIND //LCD DATA PIN
+#define LCD_CPRT PORTB //LCD COMMANDS PORT
+#define LCD_CDDR DDRB //LCD COMMANDS DDR
+#define LCD_CPIN PINB //LCD COMMANDS PIN
+#define LCD_RS 0 //LCD RS
+#define LCD_EN 1 //LCD EN
+
+// Define your buffer sizes
+#define SERIAL_BUFFER_SIZE 20
+#define NOTES_BUFFER_SIZE 20
+
+// Global variables
+char serialBuffer[SERIAL_BUFFER_SIZE];
+char notesBuffer[NOTES_BUFFER_SIZE];
+int serialIndex = 0;
+int notesIndex = 0;
+volatile int buttonState = 0; // Holds the state of all buttons
+void lcd_putValue(unsigned char val)
+{
LCD_DPRT &= 0x0F;
- LCD_DPRT |= (val&0xF0); //send cmnd to data port
- LCD_CPRT |= (1<<LCD_EN); //EN = 1 for H-to-L pulse
- _delay_us(1); //wait to make enable wide
- LCD_CPRT &= ~ (1<<LCD_EN); //EN = 0 for H-to-L pulse
- _delay_us(100); //wait to make enable wide
-
+ LCD_DPRT |= (val & 0xF0); //send cmnd to data port
+ LCD_CPRT |= (1 << LCD_EN); //EN = 1 for H-to-L pulse
+ _delay_us(1); //wait to make enable wide
+ LCD_CPRT &= ~(1 << LCD_EN); //EN = 0 for H-to-L pulse
+ _delay_us(100); //wait to make enable wide
LCD_DPRT &= 0x0F;
- LCD_DPRT |= val<<4; //send cmnd to data port
- LCD_CPRT |= (1<<LCD_EN); //EN = 1 for H-to-L pulse
- _delay_us(1); //wait to make enable wide
- LCD_CPRT &= ~ (1<<LCD_EN); //EN = 0 for H-to-L pulse
- _delay_us(100); //wait to make enable wide
+ LCD_DPRT |= val << 4; //send cmnd to data port
+ LCD_CPRT |= (1 << LCD_EN); //EN = 1 for H-to-L pulse
+ _delay_us(1); //wait to make enable wide
+ LCD_CPRT &= ~(1 << LCD_EN); //EN = 0 for H-to-L pulse
+ _delay_us(100); //wait to make enable wide
}
//*******************************************************
-void lcdCommand( unsigned char cmnd ){
- LCD_CPRT &= ~ (1<<LCD_RS); //RS = 0 for command
+void lcdCommand(unsigned char cmnd)
+{
+ LCD_CPRT &= ~(1 << LCD_RS); //RS = 0 for command
lcd_putValue(cmnd);
}
//*******************************************************
-void lcdData( unsigned char data )
+void lcdData(unsigned char data)
{
- LCD_CPRT |= (1<<LCD_RS); //RS = 1 for data
- lcd_putValue(data);
+ LCD_CPRT |= (1 << LCD_RS); //RS = 1 for data
+ lcd_putValue(data);
}
void lcd_clear()
{
- lcdCommand(0x01);
+ lcdCommand(0x01);
_delay_us(1700);
}
@@ -63,65 +74,137 @@ void lcd_hideCursor()
void lcd_init()
{
LCD_DDDR |= 0xF0;
- LCD_CDDR |= (1<<LCD_RS)|(1<<LCD_EN);
-
- LCD_CPRT &=~(1<<LCD_EN); //LCD_EN = 0
+ LCD_CDDR |= (1 << LCD_RS) | (1 << LCD_EN);
+ LCD_CPRT &= ~(1 << LCD_EN); //LCD_EN = 0
_delay_us(2000); //wait for init.
-
lcdCommand(0x33); //send $33 for init.
lcdCommand(0x32); //send $32 for init
lcdCommand(0x28); //init. LCD 2 line,5*7 matrix
lcdCommand(0x0e); //display on, cursor on
lcdCommand(0x06); //shift cursor right
-
- lcd_clear();
+ lcd_clear();
}
//*******************************************************
void lcd_gotoxy(unsigned char x, unsigned char y)
-{
- unsigned char firstCharAdr[]={0x80,0xC0,0x94,0xD4};//Table 12-4
- lcdCommand(firstCharAdr[y-1] + x - 1);
- _delay_us(100);
+{
+ unsigned char firstCharAdr[] = { 0x80, 0xC0, 0x94, 0xD4 }; //Table 12-4
+ lcdCommand(firstCharAdr[y - 1] + x - 1);
+ _delay_us(100);
}
//*******************************************************
-void lcd_print( char * str )
+void lcd_print(char *str)
{
unsigned char i = 0;
-
- while(str[i] != 0) //while it is not end of string
+ while (str[i] != 0) //while it is not end of string
{
lcdData(str[i]);
- i++ ;
+ i++;
}
}
+char getSerialData() {
+ // Read serial data and return it
+ return ' ';
+}
+
+char getNote() {
+ // Read notes data and return it
+ return ' ';
+}
+
+void setup() {
+ // Initialize Serial communication
+ // Initialize LCD
+ // Initialize buttons as inputs
+ // Set pins A4 and A5 as inputs with pull-up resistors enabled
+ DDRC &= ~((1 << DDC4) | (1 << DDC5));
+ PORTC |= (1 << PORTC4) | (1 << PORTC5);
+
+ // Enable Pin Change Interrupt on pins PC4 and PC5
+ PCMSK1 |= (1 << PCINT12) | (1 << PCINT13); // Enable PCINT for pins PC4 and PC5
+ PCICR |= (1 << PCIE1); // Enable Pin Change Interrupt 1
+ sei(); // Enable global interrupts
+}
+
+ISR(PCINT1_vect) {
+ // Update button state when any pin changes state
+ for (unsigned char i = 0; i <= 5; i++) {
+ if (PINC & (1 << i)) {
+ buttonState = i;
+ break;
+ }
+ }
+}
+
+void displaySerialData() {
+ lcd_clear();
+ lcd_gotoxy(1, 1);
+ while (!(buttonState == 5)) {
+ char newData = getSerialData();
+ if (newData != '\0') {
+ // Add new data to the left side of line 1 of the LCD
+ // Push existing data to the right
+ // Display on LCD
+ }
+ _delay_ms(100); // Adjust delay as needed
+ }
+}
+
+void displayNotes() {
+ lcd_clear();
+ lcd_gotoxy(1, 1);
+ while (buttonState == 4) {
+ char newNote = getNote();
+ if (newNote != '\0') {
+ // Add new note to the right side of line 1 of the LCD
+ // Push existing notes to the left
+ // Display on LCD
+ }
+ _delay_ms(1000); // Adjust delay as needed
+ }
+}
+
//*******************************************************
-int main(void)
-{
+int main(void) {
+ lcd_init();
lcd_init();
lcd_hideCursor();
-
- while(1)
- {
+
+ setup();
+ lcd_clear();
+ while (1) {
+ // Check button state and perform actions accordingly
+ if (buttonState == 5) {
+ lcd_clear();
+ lcd_gotoxy(1,1);
+ lcd_print("Button A5 Works");
+ _delay_ms(100);
+ //displaySerialData();
+ } else if (buttonState == 4) {
+ lcd_clear();
+ lcd_gotoxy(1,2);
+ lcd_print("Button A4 Works");
+ _delay_ms(100);
+ //displayNotes();
+ }
+ }
+ return 0;
+ /*while (1) {
lcd_clear();
- lcd_gotoxy(1,1);
- lcd_print("The world is but");
- lcd_gotoxy(1,2);
+ lcd_gotoxy(1, 1);
+ lcd_print("Note 1:");
+ lcd_gotoxy(1, 2);
lcd_print("one country");
-
lcd_showCursor();
_delay_ms(2500);
-
lcd_clear();
-
- lcd_gotoxy(1,1);
+ lcd_gotoxy(1, 1);
lcd_print("and mankind its");
- lcd_gotoxy(1,2);
- lcd_print("citizens.");
- _delay_ms(3500);
+ lcd_gotoxy(1, 2);
+ lcd_print("citizens.");
+ _delay_ms(3500);
}
-
- return 0;
-}
-\ No newline at end of file
+ return 0;*/
+}
