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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2010-03-05 19:01:12 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2010-03-05 19:01:12 +0000 |
| commit | b69948bc4883423fde36e63e2ef5d2d16f7ec71c (patch) | |
| tree | 576847f058c97f57c87882a8989deeb610cefe2d /boards/RAISONANCE_REVA_STM8S/board.c | |
| parent | 549fe1b7d3a791c2aa112a53bb2c49c2f48fa24e (diff) | |
| download | ChibiOS-b69948bc4883423fde36e63e2ef5d2d16f7ec71c.tar.gz ChibiOS-b69948bc4883423fde36e63e2ef5d2d16f7ec71c.tar.bz2 ChibiOS-b69948bc4883423fde36e63e2ef5d2d16f7ec71c.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1713 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'boards/RAISONANCE_REVA_STM8S/board.c')
| -rw-r--r-- | boards/RAISONANCE_REVA_STM8S/board.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/boards/RAISONANCE_REVA_STM8S/board.c b/boards/RAISONANCE_REVA_STM8S/board.c new file mode 100644 index 000000000..542f95c2c --- /dev/null +++ b/boards/RAISONANCE_REVA_STM8S/board.c @@ -0,0 +1,67 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT 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; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "ch.h"
+#include "hal.h"
+
+/*
+ * TIM 2 clock after the prescaler.
+ */
+#define TIM2_CLOCK (SYSCLK / 16)
+#define TIM2_ARR ((TIM2_CLOCK / CH_FREQUENCY) - 1)
+
+/*
+ * TIM2 interrupt handler.
+ */
+CH_IRQ_HANDLER(13) {
+
+ CH_IRQ_PROLOGUE();
+
+ chSysLockFromIsr();
+ chSysTimerHandlerI();
+ chSysUnlockFromIsr();
+
+ TIM2_SR1 = 0;
+
+ CH_IRQ_EPILOGUE();
+}
+
+/*
+ * Board initialization code.
+ */
+void hwinit(void) {
+
+ /*
+ * HAL initialization.
+ */
+ halInit();
+
+ /*
+ * TIM2 initialization as system tick.
+ */
+ CLK_PCKENR1 |= 32; /* PCKEN15, TIM2 clock source.*/
+ TIM2_PSCR = 4; /* Prescaler divide by 2^4=16.*/
+ TIM2_ARRH = TIM2_ARR >> 8;
+ TIM2_ARRL = TIM2_ARR;
+ TIM2_CNTRH = 0;
+ TIM2_CNTRL = 0;
+ TIM2_SR1 = 0;
+ TIM2_IER = 1; /* UIE */
+ TIM2_CR1 = 1; /* CEN */
+}
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