* added get_interval function to ltc4150

* fixed date command (problem with leading zeros)

drivers/include/ltc4150.h

@@ -10,5 +10,6 @@ void ltc4150_stop();
 double ltc4150_get_current_mA();
 double ltc4150_get_total_mAh();
 double ltc4150_get_avg_mA();
+int ltc4150_get_interval();
 
 #endif /* __LTC4150_H */

drivers/ltc4150.c

@@ -70,6 +70,10 @@ double ltc4150_get_avg_mA() {
     return (int_to_coulomb(int_count)*1000000000)/HWTIMER_TICKS_TO_US(last_int_time - start_time);
 }
 
+int ltc4150_get_interval() {
+    return HWTIMER_TICKS_TO_US(last_int_time - start_time);
+}
+
 unsigned long ltc4150_get_intcount() {
     return int_count;
 }

sys/shell/ltc4150.c

@@ -2,7 +2,7 @@
 #include <ltc4150.h>
 
 void _get_current_handler(char* unused) {
-	printf("Power usage: %.4f mA (%.4f mA avg/ %.4f mAh total)\n", ltc4150_get_current_mA(), ltc4150_get_avg_mA(), ltc4150_get_total_mAh());
+	printf("Power usage: %.4f mA (%.4f mA avg/ %.4f mAh total / %i sec)\n", ltc4150_get_current_mA(), ltc4150_get_avg_mA(), ltc4150_get_total_mAh(), ltc4150_get_interval());
 }
 
 void _reset_current_handler(char* unused) {

sys/shell/rtc.c

@@ -16,13 +16,13 @@ void _settime_handler(char* c) {
     int res;
     uint16_t month, epoch_year;
 
-    res = sscanf(c, "date %hu-%hu-%i %i:%i:%i",
+    res = sscanf(c, "date %hu-%hu-%u %u:%u:%u",
             &epoch_year,
             &month,
-            &(now.tm_mday),
-            &(now.tm_hour),
-            &(now.tm_min),
-            &(now.tm_sec));
+            (unsigned int*) &(now.tm_mday),
+            (unsigned int*) &(now.tm_hour),
+            (unsigned int*) &(now.tm_min),
+            (unsigned int*) &(now.tm_sec));
     
     if (res < 6) {
         printf("Usage: date YYYY-MM-DD hh:mm:ss\n");