From 04eae39ebd20de1fef5982f66f57cc8fb0fc44d4 Mon Sep 17 00:00:00 2001
From: Francisco Molina <femolina@uc.cl>
Date: Thu, 4 Jun 2020 15:39:07 +0200
Subject: [PATCH 09/11] drivers/common/openserial: add flag to echo badcrc
 frames

---
 drivers/common/openserial.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/common/openserial.c b/drivers/common/openserial.c
index 5c3c0003..c6cdddf0 100644
--- a/drivers/common/openserial.c
+++ b/drivers/common/openserial.c
@@ -981,9 +981,13 @@ port_INLINE void inputHdlcClose(void) {
         openserial_vars.inputBufFillLevel    -= 2;
     } else {
         // the CRC is incorrect
-
+#ifdef OPENSERIAL_ECHO_BADCRC
+        // Force echo on invalid crc
+        openserial_vars.inputBuf[0] = SERFRAME_PC2MOTE_TRIGGERSERIALECHO;
+#else
         // drop the incoming frame
         openserial_vars.inputBufFillLevel     = 0;
+#endif
     }
 }
 
-- 
2.27.0