Initial commit

Currently counts up to 59 minutes and 59 seconds before resetting.

4 files changed, 77 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..cd4ee94
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,9 @@
+out=ctimer
+warn = -Wall -Wpedantic
+
+all:
+	cc $(dbg) $(warn) -c src/ctime.c -o obj/ctime.o
+	cc $(dbg) $(warn) src/main.c obj/* -o $(out)
+
+debug:
+	make dbg=-g
diff --git a/src/ctime.c b/src/ctime.c
new file mode 100644
index 0000000..60cafb7
--- /dev/null
+++ b/src/ctime.c
@@ -0,0 +1,21 @@
+#include "ctime.h"
+
+void ctime_t_new(ctime_t* t) {
+  t->sec = 0;
+  t->min = 0;
+  t->hour = 0;
+  t->day = 0;
+  t->month = 0;
+  t->year = 0;
+}
+
+int ctime_add_sec(ctime_t* t, int duration) {
+  t->sec += duration;
+  if(t->sec > 59) {
+    // Increment minute
+    t->min++;
+    // TODO: This doesn't work when duration > 1. Need better logic here.
+    t->sec = 0;
+  }
+  return 0;
+}
diff --git a/src/ctime.h b/src/ctime.h
new file mode 100644
index 0000000..26c28db
--- /dev/null
+++ b/src/ctime.h
@@ -0,0 +1,19 @@
+#ifndef ctime_time
+#define ctime_time
+
+#include <stdlib.h>
+
+typedef struct ctime {
+  int sec;
+  int min;
+  int hour;
+  int day;
+  int month;
+  int year;
+} ctime_t;
+
+void ctime_t_new(ctime_t*);
+
+int ctime_add_sec(ctime_t*, int);
+
+#endif
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..cc078f4
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,28 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+
+#include "ctime.h"
+
+int main(int argc, char* argv[]) {
+  int i = 1;
+
+  // Don't override anything previous
+  printf("\n");
+
+  int sleep_sec = 1;
+  int sleep_usec = sleep_sec * 1000000;
+
+  ctime_t t;
+  ctime_t_new(&t);
+
+  while(0 == 0) {
+    printf("\r%02d:%02d", t.min, t.sec);
+    ctime_add_sec(&t, 1);
+    fflush(stdout);
+    i++;
+    usleep(sleep_usec);
+  }
+  printf("\n");
+}