more Extech integration

README

@@ -66,3 +66,17 @@ Specifically PowerTOP contains code from
 nl80211 userspace tool - Copyright 2007, 2008	Johannes Berg <johannes@sipsolutions.net>
 
 
+
+
+Extech Power Analyzer / Datalogger support
+------------------------------------------
+I use, and our analysis teams use, the Extech Power Analyzer/Datalogger
+(model number 380803) quite a lot, and PowerTOP supports using this
+device over the serial cable. Just pass the device node on the command line
+like this
+
+powertop --extech=/dev/ttyUSB0
+
+(where ttyUSB0 is the devicenode of the serial-to-usb adapter on my system)
+
+

main.cpp

@@ -65,6 +65,7 @@ static const struct option long_options[] =
 	{"help",no_argument, NULL, 'u'}, /* u for usage */
 	{"calibrate",no_argument, NULL, 'c'},
 	{"html", optional_argument, NULL, 'h'},
+	{"extech", optional_argument, NULL, 'e'},
 	{NULL, 0, NULL, 0}
 };
 
@@ -79,6 +80,7 @@ static void print_usage()
 	printf(_("--debug \t run in \"debug\" mode\n"));
 	printf(_("--version \t print version information\n"));
 	printf(_("--calibrate \t runs powertop in calibration mode\n"));
+	printf(_("--extech=devnode \t uses an Extech Power Analyzer for measurements\n"));
 	printf(_("--html[=FILENAME]\t\t generate a html report\n"));
 	printf(_("--help \t\t print this help menu\n"));
 	printf("\n");
@@ -245,6 +247,9 @@ int main(int argc, char **argv)
 				exit(0);
 				break;
 
+			case 'e': /* Extech power analyzer support */
+				extech_power_meter(optarg ? optarg : "/dev/ttyUSB0");
+				break;
 			case 'u':
 				print_usage();
 				exit(0);

measurement/measurement.cpp

@@ -109,14 +109,6 @@ void detect_power_meters(void)
 	DIR *dir;
 	struct dirent *entry;
 
-	if (0) {
-		class extech_power_meter *meter;
-
-		meter = new class extech_power_meter("/dev/ttyUSB0");
-
-		power_meters.push_back(meter);
-	}
-
 	dir = opendir("/proc/acpi/battery");
 	if (!dir)
 		return;
@@ -136,3 +128,15 @@ void detect_power_meters(void)
 	closedir(dir);
 
 }
+
+void extech_power_meter(const char *devnode)
+{
+	DIR *dir;
+	struct dirent *entry;
+
+	class extech_power_meter *meter;
+
+	meter = new class extech_power_meter(devnode);
+
+	power_meters.push_back(meter);
+}

measurement/measurement.h

@@ -49,6 +49,8 @@ extern double global_joules_consumed(void);
 extern double global_time_left(void);
 
 extern void detect_power_meters(void);
+extern void extech_power_meter(const char *devnode);
+
 
 extern double min_power;