Handle USART_RXC interrupt

src/main.c

@@ -2,6 +2,7 @@
 #include "serial.h"
 
 #include <stdio.h>
+#include <avr/interrupt.h>
 
 #define MAX_CMDBUF 256
 
@@ -17,6 +18,10 @@ int main(void)
 		return 1;
 	}
 
+	// Handle USART_RXC interrupt
+	UCSRB |= (1 << RXCIE);
+	sei();
+
 	USART_Init();
 
 	for (i = 1;; i++) {
@@ -24,6 +29,7 @@ int main(void)
 
 		sprintf(buf, "[CORE] Fetching sensors #%05lu...\r\n", i);
 		USART_Write(buf);
+		USART_Update();
 
 		// USART_Read(&cmd, MAX_CMDBUF);
 		// sprintf(buf, "[CORE] Checking cmdbuf=\"%s\"\r\n", cmd);