From 27905dc59058e62eacc98e43465bc4e070d352ee Mon Sep 17 00:00:00 2001
From: Jaro <jaro@ttx.sk>
Date: Thu, 29 Oct 2020 19:26:25 +0100
Subject: [PATCH] Fix problem with start

---
 Makefile    |  4 ++--
 gpiosysfs.c | 12 +++++-------
 2 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/Makefile b/Makefile
index 92a4e83..cc0739c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-VERSION = 0.0.7
+VERSION = 0.0.11
 # Global target; when 'make' is run without arguments, this is what it should do
 all: bell-mqtt-recv
  
@@ -35,4 +35,4 @@ clean:
 	rm bell-mqtt-recv -f *.o
 
 pack:
-	tar cvzf ../bell-rspro-$(VERSION).tar.gz $(DEPS) $(SRC) Makefile bell-rspro.init
+	tar cvzf ../bell-rspro-$(VERSION).tar.gz $(DEPS) $(SRC) Makefile Makefile.openwrt bell-rspro.init
diff --git a/gpiosysfs.c b/gpiosysfs.c
index 1efb33b..285c8f2 100644
--- a/gpiosysfs.c
+++ b/gpiosysfs.c
@@ -32,19 +32,17 @@ static void writeToFile(const char *absoluteFileName, const char *contents) {
 }
 
 void gpioSetup(const char *pin) {
-	// TODO only export if not already exported...
-	if (access("/sys/class/gpio/unexport",W_OK) == 0) 
-		writeToFile("/sys/class/gpio/unexport", pin);
-	writeToFile("/sys/class/gpio/export", pin);
-
-	char buf[33];
+	char buf[64];
 	struct stat statBuf;
 	int pinExported = -1;
 
 	sprintf(buf, "/sys/class/gpio/gpio%s/direction", pin);
 
+	if (stat(buf, &statBuf) != 0)
+		writeToFile("/sys/class/gpio/export", pin);
+
 	// May have to briefly wait for OS to make symlink! 
-	while (pinExported != 0) {	
+	while (pinExported != 0) {
 		msleep(1000);
 		pinExported = stat(buf, &statBuf);
 	}