From e6d02c5809381911236d6384ff5826e419de9939 Mon Sep 17 00:00:00 2001
From: Gergő J. Miklós
Date: Fri, 9 Oct 2020 02:13:04 +0200
Subject: plus error handling

---
 src/main.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/main.c b/src/main.c
index 0c7e800..09afe49 100644
--- a/src/main.c
+++ b/src/main.c
@@ -67,14 +67,14 @@ void bus_err(int ern){
 uchar   *xchg_data  (uchar *buf, uint16 wrlen, uint16 waitlen, uint16 rdlen){                     //# [buf] = 32 byte         
 
 	if(write(devicef, buf, wrlen) != wrlen){                //# write one byte to device
-        printf("I2C communication(wr) error. errno: %d\n",errno);
-        perror(errno);
+        perror("I2C communication(wr) error.");
+        printf("errno: %d\n",errno);
     }
     usleep(waitlen*1000);                                //# Wait 10ms for reading
 
     if(read(devicef, buf, rdlen) != rdlen) {                //# read the result
-        printf("I2C communication(rd) error. errno: %d\n",errno);
-        perror(errno);
+        perror("I2C communication(rd) error.");
+        printf("errno: %d\n",errno);
     }
     return buf; 
 }
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