Move parser to separate module and add USART_IsDataAvailable

src/parser.c

@@ -0,0 +1,44 @@
+#include "common.h"
+#include "serial.h"
+#include "parser.h"
+
+// # Supported Commands
+//   (Optional decimal point for numbers)
+//   - START
+//   - RESET
+//   - STOP
+//   - SET TEMP 20
+//   - SET DEWP 60.0
+
+static int state;
+
+void CMD_Parse(char ch)
+{
+	switch (state) {
+	case 0:
+		if (ch == 't')
+			state = 1;
+		break;
+	case 1:
+		if (ch == 'e')
+			state = 2;
+		else
+			state = 0;
+	case 2:
+		if (ch == 's')
+			state = 3;
+		else
+			state = 0;
+	case 3:
+		if (ch == 't')
+			state = 4;
+		else
+			state = 0;
+	case 4:
+		if (ch == '\n') {
+			USART_Printf("[CORE] Parsed 'test'!\r\n");
+			state = 0;
+		} else
+			state = 0;
+	}
+}