PIC16F877A-Ultrasonic-UART-Initialization

void initialize_uart(void) {
    TRISC6 = 0;    // TX pin as output
    TRISC7 = 1;    // RX pin as input
    
    SPBRG = 129;   // Baud rate set for 9600 with 20MHz crystal
    BRGH = 1;      // High-speed baud rate
    SYNC = 0;      // Asynchronous mode
    SPEN = 1;      // Enable serial port
    TXEN = 1;      // Enable transmission
    CREN = 1;      // Enable reception
}

void uart_send_byte(uint8_t data) {
    while (!TXIF);  // Wait for transmit buffer to be empty
    TXREG = data;   // Send the byte
}

void uart_send_string(const char* str) {
    while (*str) {
        uart_send_byte(*str++);
    }
}