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authorRob Purchase <shotofadds@rockbox.org>2008-01-14 22:04:48 +0000
committerRob Purchase <shotofadds@rockbox.org>2008-01-14 22:04:48 +0000
commit47ea030e2e68a51f91a2c2302b7ea4d3ee1a2a07 (patch)
tree0a48ce653e22ec9a2673474f718217d9659e0c6b /firmware/target/arm/tcc780x/kernel-tcc780x.c
parentb30ca8ca5ab6c8ea27b8fe1f5fb38ebad09b7e62 (diff)
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Initial Cowon D2 commit:
* bootloader test program (basic LCD & button drivers, reads touchscreen) * work-in-progress stubs for main build git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16090 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/arm/tcc780x/kernel-tcc780x.c')
-rw-r--r--firmware/target/arm/tcc780x/kernel-tcc780x.c43
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 @@
+/***************************************************************************
+* __________ __ ___.
+* Open \______ \ ____ ____ | | _\_ |__ _______ ___
+* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+* \/ \/ \/ \/ \/
+* $Id$
+*
+* Copyright (C) 2008 by Rob Purchase
+*
+* All files in this archive are subject to the GNU General Public License.
+* See the file COPYING in the source tree root for full license agreement.
+*
+* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+* KIND, either express or implied.
+*
+****************************************************************************/
+
+#include "config.h"
+#include "system.h"
+#include "kernel.h"
+#include "timer.h"
+#include "thread.h"
+
+/* NB: PCK_TCT must previously have been set to 2Mhz by calling clock_init() */
+void tick_start(unsigned int interval_in_ms)
+{
+ /* disable Timer0 */
+ TCFG0 &= ~1;
+
+ /* set counter reference value based on 1Mhz tick */
+ TREF0 = interval_in_ms * 1000;
+
+ /* Timer0 = reset to 0, divide=2, IRQ enable, enable (continuous) */
+ TCFG0 = (1<<8) | (0<<4) | (1<<3) | 1;
+
+ /* Unmask timer IRQ */
+ MIRQ &= ~TIMER_IRQ_MASK;
+}
+
+/* NB: Since the 7801 has a single timer IRQ, the tick tasks are dispatched
+ as part of the central timer IRQ processing in timer-tcc780x.c */