diff options
| author | Bdale Garbee <bdale@gag.com> | 2012-09-12 20:01:22 -0600 |
|---|---|---|
| committer | Bdale Garbee <bdale@gag.com> | 2012-09-12 20:01:22 -0600 |
| commit | 3b612efcd1dddc6a3d59012f7ed57754b1f798c2 (patch) | |
| tree | 18d50713491ef96c5c127a309f870efb6c33f98d /src/util/make-whiten | |
| parent | e076773c1693e2a62bb828dee71c04c20dbab0a5 (diff) | |
| parent | 01eb36408d7e0e826b431fcc1d3b2deb23607e0b (diff) | |
Merge branch 'new-debian' into debian
Conflicts:
ChangeLog
debian/altos.install
debian/changelog
debian/control
debian/copyright
debian/dirs
debian/docs
debian/menu
debian/rules
src/Makefile
Diffstat (limited to 'src/util/make-whiten')
| -rw-r--r-- | src/util/make-whiten | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/util/make-whiten b/src/util/make-whiten new file mode 100644 index 00000000..d68a02af --- /dev/null +++ b/src/util/make-whiten @@ -0,0 +1,37 @@ +/* + * Copyright © 2012 Keith Packard <keithp@keithp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +/* Generate the data whitening array used by the CC11* radios */ + +int pn9 = 0x1ff; + +void +pn9_step() { + pn9 = (pn9 >> 1) | (((pn9 ^ (pn9 >> 5)) & 1) << 8); +} + +int val() +{ + int ret = pn9 & 0xff; + + for (int i = 0; i < 8; i++) + pn9_step(); + return ret; +} + +for (int i = 0; i < 128; i++) + printf (" /* %3d */ 0x%02x,\n", i + 1, val()); |