Force log upon startup

1 files changed, 8 insertions, 2 deletions

diff --git a/src/modbuslog.c b/src/modbuslog.c
index 4c8ac60..5142646 100644
--- a/src/modbuslog.c
+++ b/src/modbuslog.c
@@ -141,6 +141,10 @@ int main(int argc, char *argv[]) {
 	int rc;
 	int i;
 
+	// used to force a reading 2 mins after power on
+	int firstrun;
+	firstrun = 1;
+
 	// SIGALRM used to wake for loop up every 60 secs
 	// sleep puts whole thread to sleep which isn't what we want
 	// other methods involve CPU spinlocks which are inefficient
@@ -201,8 +205,8 @@ int main(int argc, char *argv[]) {
 			else
 				intervalduration = intervalvalue * 60;
 
-			// if we match the required time for the reading
-			if (unixtime_min % intervalduration == 0) {
+			// if we match the required time for the reading or first run
+			if ((unixtime_min % intervalduration == 0)||firstrun) {
 				//printf("specified minute.  %d %d\n", unixtime_min,
 				//              intervalduration);
 
@@ -383,6 +387,8 @@ int main(int argc, char *argv[]) {
 			}
 			//printf("%d ", slaveid);
 		}
+		// revert to normal timing
+		firstrun=0;
 		//printf("%d\n", unixtime_min);
 	}
 }