Hardening against unrecognized and multiple Keycodes at onceHEADmain

2 files changed, 7 insertions, 2 deletions

diff --git a/iot_barcode_device_handler b/iot_barcode_device_handler
index 5c05aab..ef40d3e 100755
--- a/iot_barcode_device_handler
+++ b/iot_barcode_device_handler
@@ -30,6 +30,7 @@ def main():
                     if eventdata.keystate:
                         with open(fifo_path, "w") as fifo:
                             fifo.write(eventdata.keycode)
+                            fifo.write("\n")
                             fifo.flush()
 
     except KeyboardInterrupt:
diff --git a/iot_barcode_transmitter b/iot_barcode_transmitter
index 5b08111..37336ef 100755
--- a/iot_barcode_transmitter
+++ b/iot_barcode_transmitter
@@ -25,8 +25,12 @@ def main():
 
         while True:
             with open(fifo_path, "r") as fifo:
-                keycode = fifo.read()
-            character = KEYMAP[keycode]
+                keycode = fifo.readline()
+            if keycode in KEYMAP:
+                character = KEYMAP[keycode]
+            else:
+                print("Keycode not recognized")
+                character = ""
             if character is "\n":
                 mqtt_service.client.publish(
                     topic,