From f8ae02cf6bad5c5c207aa2b2e9d5b2a5a1e8d3de Mon Sep 17 00:00:00 2001
From: Gergő J. Miklós
Date: Sat, 10 Oct 2020 22:35:14 +0200
Subject: test

---
 src/main.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/main.c b/src/main.c
index 383884d..2ff69a8 100644
--- a/src/main.c
+++ b/src/main.c
@@ -61,21 +61,29 @@ void print_help(void) {
 }
 
 void bus_err(int ern){
-    printf("I2C communication(rd) error. errno: %d\n",errno);
+    //printf("I2C communication(rd) error. errno: %d\n",errno);
+    fprintf (stderr, "Internal error %d at %s, line %d. (function: %s/%s)", ern, __FILE__, __LINE__, __func__, __FUNCTION__);
+}
+void bus_errr(int ern){
+    //printf("I2C communication(rd) error. errno: %d\n",errno);
+    fprintf (stderr, "Internal error %d at %s, line %d. (function: %s/%s)", errno, __FILE__, __LINE__, __func__, __FUNCTION__);
 }
-
 
 uchar   *xchg_data  (uchar *buf, uint16 wrlen, uint16 waitlen, uint16 rdlen){                     //# [buf] = 32 byte         
 
 	if(write(devicef, buf, 1) != 1){                //# write one byte to device
         perror("I2C communication(wrr) error.");
-        printf("errno: %d\n",errno);
+        fprintf (stderr, "I2C error (WR) %d at %s, line %d. (function: %s/%s)", errno, __FILE__, __LINE__, __func__, __FUNCTION__);
+        bus_err(errno);
+        bus_errr(0);
     }
     usleep(waitlen*1000);                                //# Wait 10ms for reading
 
     if(read(devicef, buf, rdlen) != rdlen) {                //# read the result
         perror("I2C communication(rd) error.");
-        printf("errno: %d\n",errno);
+        fprintf (stderr, "I2C error (WR) %d at %s, line %d. (function: %s/%s)", errno, __FILE__, __LINE__, __func__, __FUNCTION__);
+        bus_err(errno);
+        bus_errr(0);
     }
     return buf; 
 }
-- 
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