3djc/rssi poweroff safety (#5126)

Shutdown RSSI Alert
2017-08-01 14:13:25 +02:00
parent a7524ba74d
commit 7434e330c8
35 changed files with 1033 additions and 893 deletions
@@ -49,7 +49,7 @@ int8_t char2idx(char c)
 {
  if (c == '_') return 37;
 #if LEN_SPECIAL_CHARS > 0
-  if (c < 0 && c+128 <= LEN_SPECIAL_CHARS) return 41 + (c+128);
+  if ((int8_t)c < 0 && c+128 <= LEN_SPECIAL_CHARS) return 41 + (c+128);
 #endif
  if (c >= 'a') return 'a' - c - 1;
  if (c >= 'A') return c - 'A' + 1;