From 90d94b88bfc3741ff16ac7ab631c7bea818667f4 Mon Sep 17 00:00:00 2001
From: Eric Duminil <eric.duminil@gmail.com>
Date: Sun, 18 Apr 2021 11:14:06 +0200
Subject: [PATCH] Allow backspace in console

---
 ampel-firmware/sensor_commands.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/ampel-firmware/sensor_commands.cpp b/ampel-firmware/sensor_commands.cpp
index 48d59c0..30a5564 100644
--- a/ampel-firmware/sensor_commands.cpp
+++ b/ampel-firmware/sensor_commands.cpp
@@ -92,10 +92,16 @@ namespace sensor_commands {
       break;
     case '\r': // discard carriage return
       break;
+    case '\b': // backspace
+      if (input_pos > 0) {
+        input_pos--;
+      }
+      break;
     default:
       // keep adding if not full ... allow for terminating null byte
-      if (input_pos < (MAX_COMMAND_SIZE - 1))
+      if (input_pos < (MAX_COMMAND_SIZE - 1)) {
         input_line[input_pos++] = input_byte;
+      }
       break;
     }
   }
-- 
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