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make lcd.c compile

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Vineet K 2024-04-17 19:04:16 -04:00 committed by Shokara Kou
parent 90d226a838
commit f5713538fe
1 changed files with 59 additions and 45 deletions
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104
lcd.c
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@ -1,13 +1,18 @@
#include <avr/io.h> #include <avr/io.h>
#define F_CPU 16000000UL
#include <util/delay.h> #include <util/delay.h>
// Define LCD control pin connections // Define LCD control pin connections
#define LCD_RS_PIN PB0 #define LCD_RS_PIN PB0
#define LCD_RW_PIN PB1 #define LCD_RW_PIN PB1
#define LCD_E_PIN PB2 #define LCD_E_PIN PB2
#define LCD_RS_PORT PORTB
#define LCD_RW_PORT PORTB
#define LCD_E_PORT PORTB
// Define LCD data pin connections // Define LCD data pin connections
#define LCD_DATA_PORT PORTD #define LCD_DATA_PORT PORTD
#define LCD_DATA_DDR DDRD #define LCD_DATA_DDR DDRD
// Function prototypes // Function prototypes
void LCD_init(); void LCD_init();
@ -15,61 +20,70 @@ void LCD_command(uint8_t cmd);
void LCD_write(uint8_t data); void LCD_write(uint8_t data);
void LCD_send(char* str); void LCD_send(char* str);
int main() { int
// Set control pins as outputs main()
DDRB |= (1 << LCD_RS_PIN) | (1 << LCD_RW_PIN) | (1 << LCD_E_PIN); {
// Set data pins as outputs // Set control pins as outputs
LCD_DATA_DDR = 0xFF; DDRB |= (1 << LCD_RS_PIN) | (1 << LCD_RW_PIN) | (1 << LCD_E_PIN);
// Set data pins as outputs
LCD_DATA_DDR = 0xFF;
// Initialize LCD // Initialize LCD
LCD_init(); LCD_init();
// Display "Hello, World!" // Display "Hello, World!"
LCD_send("Hello, World!"); LCD_send("Hello, World!");
while (1) { for (;;) {
// Your main code here // Your main code here
} }
return 0; return 0;
} }
// Initialize LCD // Initialize LCD
void LCD_init() { void
_delay_ms(15); // Delay for power-on LCD_init()
LCD_command(0x38); // Function Set: 8-bit data, 2-line display, 5x8 font {
LCD_command(0x0C); // Display ON, Cursor OFF, Blink OFF _delay_ms(15); // Delay for power-on
LCD_command(0x01); // Clear display LCD_command(0x38); // Function Set: 8-bit data, 2-line display, 5x8 font
_delay_ms(2); // Delay for Clear Display command LCD_command(0x0C); // Display ON, Cursor OFF, Blink OFF
LCD_command(0x06); // Entry Mode Set: Increment cursor, No display shift LCD_command(0x01); // Clear display
_delay_ms(2); // Delay for Clear Display command
LCD_command(0x06); // Entry Mode Set: Increment cursor, No display shift
} }
// Send command to LCD // Send command to LCD
void LCD_command(uint8_t cmd) { void
LCD_RS_PORT &= ~(1 << LCD_RS_PIN); // Set RS low for command mode LCD_command(uint8_t cmd)
LCD_RW_PORT &= ~(1 << LCD_RW_PIN); // Set RW low for write mode {
LCD_DATA_PORT = cmd; // Send command to data port LCD_RS_PORT &= ~(1 << LCD_RS_PIN); // Set RS low for command mode
LCD_E_PORT |= (1 << LCD_E_PIN); // Enable LCD LCD_RW_PORT &= ~(1 << LCD_RW_PIN); // Set RW low for write mode
_delay_us(1); // Short delay LCD_DATA_PORT = cmd; // Send command to data port
LCD_E_PORT &= ~(1 << LCD_E_PIN); // Disable LCD LCD_E_PORT |= (1 << LCD_E_PIN); // Enable LCD
_delay_us(100); // Delay for command execution _delay_us(1); // Short delay
LCD_E_PORT &= ~(1 << LCD_E_PIN); // Disable LCD
_delay_us(100); // Delay for command execution
} }
// Write data to LCD // Write data to LCD
void LCD_write(uint8_t data) { void
LCD_RS_PORT |= (1 << LCD_RS_PIN); // Set RS high for data mode LCD_write(uint8_t data)
LCD_RW_PORT &= ~(1 << LCD_RW_PIN); // Set RW low for write mode {
LCD_DATA_PORT = data; // Send data to data port LCD_RS_PORT |= (1 << LCD_RS_PIN); // Set RS high for data mode
LCD_E_PORT |= (1 << LCD_E_PIN); // Enable LCD LCD_RW_PORT &= ~(1 << LCD_RW_PIN); // Set RW low for write mode
_delay_us(1); // Short delay LCD_DATA_PORT = data; // Send data to data port
LCD_E_PORT &= ~(1 << LCD_E_PIN); // Disable LCD LCD_E_PORT |= (1 << LCD_E_PIN); // Enable LCD
_delay_us(100); // Delay for data execution _delay_us(1); // Short delay
LCD_E_PORT &= ~(1 << LCD_E_PIN); // Disable LCD
_delay_us(100); // Delay for data execution
} }
// Send string to LCD // Send string to LCD
void LCD_send(char* str) { void
while (*str) { LCD_send(char *str)
LCD_write(*str++); {
} while (*str)
LCD_write(*str++);
} }