From 2c78a95284b6b7a3d6e32cfaffec5a44923514fb Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Thu, 10 Dec 2020 14:12:39 -0500
Subject: [PATCH] try clearing buffer before reading

---
 afsk/main.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/afsk/main.c b/afsk/main.c
index d596f5f4..76daf175 100644
--- a/afsk/main.c
+++ b/afsk/main.c
@@ -1199,6 +1199,11 @@ if (payload == ON)
      STEMBoardFailure = 0;
 	
      char c;
+     int charss = serialDataAvail (uart_fd);
+     printf("Clearing buffer of %d chars \n", charss);	
+     while ((charss-- > 0))
+          c = serialGetchar (uart_fd);  // clear buffer
+	
      unsigned int waitTime;
      int i = 0;	
      serialPutchar (uart_fd, '?');