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authorKeith Packard <keithp@keithp.com>2014-04-04 23:34:48 -0700
committerKeith Packard <keithp@keithp.com>2014-04-05 00:22:29 -0700
commit24167015705ae831692b95735968b04a876f935e (patch)
tree9526ca4eb2ec5773baa748449c3def36b15d2307 /src/core/ao_freq.c
parentbb9fdef607728cc326a82aa632e59724f272e53b (diff)
altos: Rename 'core' to 'kernel'
core remains a bad name to use -- dirvish skips files (and directories, it seems) with that name. Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/core/ao_freq.c')
-rw-r--r--src/core/ao_freq.c55
1 files changed, 0 insertions, 55 deletions
diff --git a/src/core/ao_freq.c b/src/core/ao_freq.c
deleted file mode 100644
index 12496f6f..00000000
--- a/src/core/ao_freq.c
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * 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.
- */
-
-#include <ao.h>
-
-/*
- * The provided 'calibration' value is
- * that needed to tune the radio to precisely 434550kHz.
- * Use that to 'walk' to the target frequency by following
- * a 'bresenham' line from 434550kHz to the target
- * frequency, and updating the radio setting along the way
- */
-
-int32_t ao_freq_to_set(int32_t freq, int32_t cal) __reentrant
-{
- static __pdata int32_t set;
- static __pdata uint8_t neg;
- static __pdata int32_t error;
-
- set = 0;
- neg = 0;
- error = -434550 / 2;
-
- if ((freq -= 434550) < 0) {
- neg = 1;
- freq = -freq;
- }
- for (;;) {
- if (error > 0) {
- error -= 434550;
- set++;
- } else {
- error += cal;
- if (--freq < 0)
- break;
- }
- }
- if (neg)
- set = -set;
- return cal + set;
-}