add --voltage-only, --current-only. Up to 24 Hz sample rate now! (d233eb9d) · Commits · derf / korad-logger

README.md

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -12,7 +12,7 @@ through voltage/current slopes for automated I-V curve measurements.
	It has been successfully used with "RND 320-KA3005P" (single-channel) and "RND		It has been successfully used with "RND 320-KA3005P" (single-channel) and "RND
	320-KA3305P" (dual-channel) supplies. Observed attributes:		320-KA3305P" (dual-channel) supplies. Observed attributes:

	* Time resolution: a few Hz		* Time resolution: 10 .. 24 Hz
	* Voltage range: 0 .. 30 V		* Voltage range: 0 .. 30 V
	* Voltage resolution: 10 mV		* Voltage resolution: 10 mV
	* Current range: 0 .. 5 A		* Current range: 0 .. 5 A

bin/korad-logger

+23 −3

Original line number	Original line	Diff line number	Diff line
	@@ -253,6 +253,8 @@ def measure_data(
	voltage_range=(None, None, None),		voltage_range=(None, None, None),
	current_range=(None, None, None),		current_range=(None, None, None),
	on_off=False,		on_off=False,
			log_voltage=True,
			log_current=True,
	):		):
	global terminate_measurement		global terminate_measurement

	@@ -311,12 +313,18 @@ def measure_data(
	print("# Timestamp Voltage Current", file=output_handle)		print("# Timestamp Voltage Current", file=output_handle)
	while not terminate_measurement:		while not terminate_measurement:
	ts = time.time()		ts = time.time()
	current = korad.get_current()		if log_current:
	voltage = korad.get_voltage()		current = korad.get_current()
			else:
			current = None
			if log_voltage:
			voltage = korad.get_voltage()
			else:
			voltage = None
	if voltage is not None and current is not None:		if voltage is not None and current is not None:
	print(f"{ts:.3f} {voltage:5.2f} {current:5.3f}", file=output_handle)		print(f"{ts:.3f} {voltage:5.2f} {current:5.3f}", file=output_handle)
	elif voltage is not None:		elif voltage is not None:
	print(f"{ts:.3f} {voltage:5.2f} NaN", file=output_handle)		print(f"{ts:.3f} {voltage:5.2f} NaN", file=output_handle)
	elif current is not None:		elif current is not None:
	print(f"{ts:.3f} NaN {current:5.3f}", file=output_handle)		print(f"{ts:.3f} NaN {current:5.3f}", file=output_handle)
	else:		else:
	@@ -527,6 +535,11 @@ def main():
	metavar="START STOP STEP",		metavar="START STOP STEP",
	help="Vary voltage limit from START to STOP over the course of the measurement. Adjust by STEP V per second.",		help="Vary voltage limit from START to STOP over the course of the measurement. Adjust by STEP V per second.",
	)		)
			parser.add_argument(
			"--voltage-only",
			action="store_true",
			help="Log voltage only (ignore current readings). Useful to increase sample rate for CC measurements.",
			)
	parser.add_argument(		parser.add_argument(
	"--current-limit",		"--current-limit",
	type=float,		type=float,
	@@ -538,6 +551,11 @@ def main():
	metavar="START STOP STEP",		metavar="START STOP STEP",
	help="Vary current limit from START to STOP over the course of the measurement. Adjust by STEP A per second.",		help="Vary current limit from START to STOP over the course of the measurement. Adjust by STEP A per second.",
	)		)
			parser.add_argument(
			"--current-only",
			action="store_true",
			help="Log current only (ignore current readings). Useful to increase sample rate for CV measurements.",
			)
	parser.add_argument(		parser.add_argument(
	"--on-off",		"--on-off",
	action="store_true",		action="store_true",
	@@ -600,6 +618,8 @@ def main():
	voltage_range=voltage_range,		voltage_range=voltage_range,
	current_range=current_range,		current_range=current_range,
	on_off=args.on_off,		on_off=args.on_off,
			log_voltage=not args.current_only,
			log_current=not args.voltage_only,
	)		)

	data = parse_data(log_data, skip=args.skip, limit=args.limit)		data = parse_data(log_data, skip=args.skip, limit=args.limit)

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