--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rvinterf/lowlevel/rviflcd.c	Sat Jun 11 00:13:35 2016 +0000
@@ -0,0 +1,40 @@
+/*
+ * This rvinterf module implements the piping of LCD output to fc-lcdemu
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+extern u_char rxpkt[];
+extern size_t rxpkt_len;
+
+char *extlcd_program;
+FILE *extlcd_pout;
+u_char extlcd_invert;
+
+void
+open_extlcd_pipe()
+{
+	extlcd_pout = popen(extlcd_program, "w");
+	if (!extlcd_pout) {
+		perror(extlcd_program);
+		exit(1);
+	}
+}
+
+void
+output_to_extlcd()
+{
+	int i;
+
+	fprintf(extlcd_pout, "%u %u ", rxpkt[1], rxpkt[2]);
+	for (i = 3; i < rxpkt_len; i += 2)
+		fprintf(extlcd_pout, "%02X%02X", rxpkt[i+1] ^ extlcd_invert,
+			rxpkt[i] ^ extlcd_invert);
+	fputc('\n', extlcd_pout);
+	fflush(extlcd_pout);
+}