From 64ba6fcf8d916c254b9a16b73791b8fed17bf706 Mon Sep 17 00:00:00 2001
From: Andre Thomas <andre1024@gmail.com>
Date: Sun, 6 Jan 2019 16:32:50 +0200
Subject: [PATCH] PN532: Fix hex formatting to 2 char len per byte

PN532: Fix hex formatting to 2 char len per byte
---
 sonoff/xsns_40_pn532_i2c.ino | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sonoff/xsns_40_pn532_i2c.ino b/sonoff/xsns_40_pn532_i2c.ino
index 3c246a7d1..787f48faa 100644
--- a/sonoff/xsns_40_pn532_i2c.ino
+++ b/sonoff/xsns_40_pn532_i2c.ino
@@ -289,7 +289,7 @@ void PN532_ScanForTag(void)
       char uids[15];
       sprintf(uids,"");
       for (uint8_t i = 0;i < uid_len;i++) {
-        sprintf(uids,"%s%X",uids,uid[i]);
+        sprintf(uids,"%s%02X",uids,uid[i]);
       }
       snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("{\"" D_JSON_TIME "\":\"%s\""), GetDateAndTime(DT_LOCAL).c_str());
       snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"PN532\":{\"UID\":\"%s\"}}"), mqtt_data, uids);