1 files changed, 39 insertions, 0 deletions
diff --git a/final_project/serial.c b/final_project/serial.c
new file mode 100644
index 0000000..bb5b58f
--- /dev/null
+++ b/final_project/serial.c
@@ -0,0 +1,39 @@
+/*
+ * CFile1.c
+ *
+ * Created: 4/3/2024 10:21:26 AM
+ *  Author: bsw9xd
+ */ 
+#include "serial.h"
+
+void usart_init() {
+	volatile int ubrr = (F_CPU / (16UL * BAUD)) - 1; //TODO: why is this volatile int???
+	UCSR1A = 0; //async normal communication
+	UCSR1B = (1 << TXEN) | (1 << RXEN);
+	UCSR1C = (1 << UCSZ0) | (1 << UCSZ1);
+	
+	
+	UBRR1H = (unsigned char)(ubrr << 8);
+	UBRR1L = (unsigned char)ubrr;
+}
+void usart_txt(char data) { //transmit data
+	UDR1 = data; //buffer the data
+	while(~UCSR1A & (1 << TXC)); //wait until the transmission is complete
+	UCSR1A |= (1 << TXC);
+	
+}
+char usart_rxt() {
+	if(UCSR1A & (1 << RXC)) {
+		return UDR1;
+	}
+	return '\0';
+}
+
+char usart_rxt_blocking() { //TODO maybe replace usart_txt
+	while(!(UCSR1A & (1 << RXC))); //TODO simplify
+	return UDR1;
+}
+
+void usart_txstr(char *str) {
+	for(int i = 0; str[i] != '\0'; i++) usart_txt(str[i]);
+}