ao-tools/ao-chaosread: Document length (-l) option

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/ao-tools/ao-chaosread/ao-chaosread.1 b/ao-tools/ao-chaosread/ao-chaosread.1
index d8ed6cb345890f6b9249eac9e818d247f20457dc..ead8afb2c2d0b767226089a4b610f4a0ad6fc8f6 100644 (file)
--- a/ao-tools/ao-chaosread/ao-chaosread.1
+++ b/ao-tools/ao-chaosread/ao-chaosread.1
@@ -29,6 +29,10 @@ reads ADC values from the noise source on the attached ChaosKey device.
 \-s serial | --serial serial
 This selects a ChaosKey by serial number instead of using the first
 one found.
+.TP
+\-l length | --length length
+Set the amount of data to read. Suffixes 'k', 'M' and 'G' are
+supported. The default is 1k.
 .SH USAGE
 .I ao-chaosread
 reads noise data.