pi_clock

commit ed59d39b6fa1334faf5a3c52bb95b71569d5851c
parent b976ebc2703beb5a4c2423fd986ef8882819849a
Author: Paco Esteban <paco@e1e0.net>
Date:   Fri,  3 Jul 2020 18:19:10 +0200

use pointer to struct tm instead of value.

Diffstat:
M
clock.c
 | 
18
+++++++++---------

1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/clock.c b/clock.c
@@ -45,7 +45,7 @@ int
 main(int argc, char *argv[])
 {
 	time_t	    t;
-	struct tm   tm;
+	struct tm  *tm;
 	char	    line0[48];
 	char	    line1[48];
 	char	    str_wday[4];
@@ -120,9 +120,9 @@ main(int argc, char *argv[])
 
 	for (;;) {
 		t = time(NULL);
-		tm = *localtime(&t);
+		tm = localtime(&t);
 
-		if (tm.tm_hour >= bl_before && tm.tm_hour <= bl_after) {
+		if (tm->tm_hour >= bl_before && tm->tm_hour <= bl_after) {
 			if (backlight_status && !tmp_on_cycles) {
 				LCD_I2C_BACKLIGHT_OFF(&lcd);
 				backlight_status = 0;
@@ -134,7 +134,7 @@ main(int argc, char *argv[])
 			}
 		}
 
-		gmt_offset = tm.tm_gmtoff / 3600;
+		gmt_offset = tm->tm_gmtoff / 3600;
 
 		if (eflag && strlen(extFile) > 2) {
 			// read external file only interval * sleep
@@ -146,20 +146,20 @@ main(int argc, char *argv[])
 			}
 			readCount++;
 			sprintf(line0, " %02d:%02d:%02d %-6s",
-			    tm.tm_hour, tm.tm_min, tm.tm_sec, extTag);
+			    tm->tm_hour, tm->tm_min, tm->tm_sec, extTag);
 		} else {
 			sprintf(line0, " %02d:%02d:%02d GMT%+ld ",
-			    tm.tm_hour, tm.tm_min, tm.tm_sec, gmt_offset);
+			    tm->tm_hour, tm->tm_min, tm->tm_sec, gmt_offset);
 		}
 		lcd.x=0;
 		lcd.y=0;
 		lcd_i2c_gotoxy(&lcd, lcd.x, lcd.y);
 		lcd_i2c_puts(&lcd, line0);
 
-		setwday(str_wday, tm.tm_wday);
-		setmonth(str_month, tm.tm_mon);
+		setwday(str_wday, tm->tm_wday);
+		setmonth(str_month, tm->tm_mon);
 		sprintf(line1, "%s, %s %2d %4d",
-		    str_wday, str_month, tm.tm_mday, 1900+tm.tm_year);
+		    str_wday, str_month, tm->tm_mday, 1900+tm->tm_year);
 		lcd.x=0;
 		lcd.y=1;
 		lcd_i2c_gotoxy(&lcd, lcd.x, lcd.y);