diff options
Diffstat (limited to 'firmware/target/arm/tcc780x/kernel-tcc780x.c')
-rw-r--r-- | firmware/target/arm/tcc780x/kernel-tcc780x.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/firmware/target/arm/tcc780x/kernel-tcc780x.c b/firmware/target/arm/tcc780x/kernel-tcc780x.c new file mode 100644 index 0000000000..e0d9c3342e --- /dev/null +++ b/firmware/target/arm/tcc780x/kernel-tcc780x.c | |||
@@ -0,0 +1,43 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2008 by Rob Purchase | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | |||
20 | #include "config.h" | ||
21 | #include "system.h" | ||
22 | #include "kernel.h" | ||
23 | #include "timer.h" | ||
24 | #include "thread.h" | ||
25 | |||
26 | /* NB: PCK_TCT must previously have been set to 2Mhz by calling clock_init() */ | ||
27 | void tick_start(unsigned int interval_in_ms) | ||
28 | { | ||
29 | /* disable Timer0 */ | ||
30 | TCFG0 &= ~1; | ||
31 | |||
32 | /* set counter reference value based on 1Mhz tick */ | ||
33 | TREF0 = interval_in_ms * 1000; | ||
34 | |||
35 | /* Timer0 = reset to 0, divide=2, IRQ enable, enable (continuous) */ | ||
36 | TCFG0 = (1<<8) | (0<<4) | (1<<3) | 1; | ||
37 | |||
38 | /* Unmask timer IRQ */ | ||
39 | MIRQ &= ~TIMER_IRQ_MASK; | ||
40 | } | ||
41 | |||
42 | /* NB: Since the 7801 has a single timer IRQ, the tick tasks are dispatched | ||
43 | as part of the central timer IRQ processing in timer-tcc780x.c */ | ||