LaundrySorcery

commit 6f059807d18124f9087afe826b4bd43a725900be
parent f8b82eaff11ef173d579cb61a5c7b04cf5553c54
Author: Dominik Schmidt <das1993@hotmail.com>
Date:   Mon, 11 Jun 2018 01:29:16 +0000

Allow to write a log-file, which captures the turn-on and -off events with unix timestamps

Diffstat:
src/laundrysorcery.c
 | 
22
++++++++++++++++++++--

1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/src/laundrysorcery.c b/src/laundrysorcery.c
@@ -45,6 +45,19 @@ struct timespec timestamp;
 double running_mean;
 
 char *on_file;
+char *log_file;
+
+void write_log_file(char *term){
+	if(!log_file)
+		return;
+	FILE *f=fopen(log_file, "a");
+	if(!f){
+		perror("fopen of log file");
+		return;
+	}
+	fprintf(f, "%lu%s", time(NULL), term);
+	fclose(f);
+}
 
 void write_on_file(char *prefix){
 	FILE *f=fopen(on_file, "w");
@@ -57,10 +70,12 @@ void write_on_file(char *prefix){
 
 void turn_on(void){
 	write_on_file("");
+	write_log_file(" ");
 }
 
 void turn_off(void){
 	write_on_file("-");
+	write_log_file("\n");
 }
 
 void toggle_on_off(void){
@@ -152,11 +167,14 @@ int main(int argc, char **argv)
 	wiringPiSetup () ;
 	pinMode (0, OUTPUT) ;
 	pinMode (1, INPUT) ;
-	if(argc != 2){
-		printf("Usage: %s </path/to/onfile>\n", argv[0]);
+	if(!(argc == 2 || argc == 3)){
+		printf("Usage: %s </path/to/onfile> [/path/to/log_file]\n", argv[0]);
 		return 0;
 	}
 	on_file=argv[1];
+	if(argc == 3){
+		log_file=argv[2];
+	}
 
 	digitalWrite (0, LOW);
 	delay(5);