From 992c818446e4cf614cc1ada446b974bf22a606a2 Mon Sep 17 00:00:00 2001
From: jflyper <shinoda@jaist.ac.jp>
Date: Fri, 5 May 2017 22:58:43 +0900
Subject: [PATCH] Easy to read smaller code

---
 src/main/drivers/inverter.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/main/drivers/inverter.c b/src/main/drivers/inverter.c
index 752f1a10e..7bc06f913 100644
--- a/src/main/drivers/inverter.c
+++ b/src/main/drivers/inverter.c
@@ -47,10 +47,11 @@ static void inverterSet(int identifier, bool on)
 
 static void initInverter(int identifier)
 {
-    IO_t pin = IOGetByTag(pSerialPinConfig->ioTagInverter[SERIAL_PORT_IDENTIFIER_TO_INDEX(identifier)]);
+    int uartIndex = SERIAL_PORT_IDENTIFIER_TO_INDEX(identifier);
+    IO_t pin = IOGetByTag(pSerialPinConfig->ioTagInverter[uartIndex]);
 
     if (pin) {
-        IOInit(pin, OWNER_INVERTER, RESOURCE_INDEX(SERIAL_PORT_IDENTIFIER_TO_INDEX(identifier)));
+        IOInit(pin, OWNER_INVERTER, RESOURCE_INDEX(uartIndex));
         IOConfigGPIO(pin, IOCFG_OUT_PP);
 
         inverterSet(identifier, false);