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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2008-03-27 11:48:28 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2008-03-27 11:48:28 +0000 |
| commit | ef14f74f92fb52d0028eb36b7b48b7e7c4ef52c4 (patch) | |
| tree | b79cf5f74eadd4045dfa8ff5d4f2dc129bda5315 /demos/ARM7-LPC214x-G++/board.c | |
| parent | 810cd7514051b11eaaf93e3ffcba0c7195a6b89b (diff) | |
| download | ChibiOS-ef14f74f92fb52d0028eb36b7b48b7e7c4ef52c4.tar.gz ChibiOS-ef14f74f92fb52d0028eb36b7b48b7e7c4ef52c4.tar.bz2 ChibiOS-ef14f74f92fb52d0028eb36b7b48b7e7c4ef52c4.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@248 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'demos/ARM7-LPC214x-G++/board.c')
| -rw-r--r-- | demos/ARM7-LPC214x-G++/board.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/demos/ARM7-LPC214x-G++/board.c b/demos/ARM7-LPC214x-G++/board.c new file mode 100644 index 000000000..6f004ba29 --- /dev/null +++ b/demos/ARM7-LPC214x-G++/board.c @@ -0,0 +1,135 @@ +/*
+ 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 <lpc214x.h>
+#include <vic.h>
+#include <lpc214x_serial.h>
+//#include "lpc214x_ssp.h"
+
+#include "board.h"
+//#include "mmcsd.h"
+//#include "buzzer.h"
+
+/*
+ * Non-vectored IRQs handling here.
+ */
+__attribute__((naked))
+static void IrqHandler(void) {
+
+ chSysIRQEnterI();
+
+ /* nothing */
+ VICVectAddr = 0;
+
+ chSysIRQExitI();
+}
+
+/*
+ * Timer 0 IRQ handling here.
+ */
+__attribute__((naked))
+static void T0IrqHandler(void) {
+
+ chSysIRQEnterI();
+
+ T0IR = 1; /* Clear interrupt on match MR0. */
+ chSysTimerHandlerI();
+ VICVectAddr = 0;
+
+ chSysIRQExitI();
+}
+
+/*
+ * Hardware initialization goes here.
+ * NOTE: Interrupts are still disabled.
+ */
+void hwinit(void) {
+
+ /*
+ * All peripherals clock disabled by default in order to save power.
+ */
+ PCONP = PCRTC | PCTIM0;
+
+ /*
+ * MAM setup.
+ */
+ MAMTIM = 0x3; /* 3 cycles for flash accesses. */
+ MAMCR = 0x2; /* MAM fully enabled. */
+
+ /*
+ * PLL setup for Fosc=12MHz and CCLK=48MHz.
+ * P=2 M=3.
+ */
+ PLL *pll = PLLBase;
+ pll->PLL0_CFG = 0x23; /* P and M values. */
+ pll->PLL0_CON = 0x1; /* Enalbles the PLL 0. */
+ pll->PLL0_FEED = 0xAA;
+ pll->PLL0_FEED = 0x55;
+ while (!(pll->PLL0_STAT & 0x400))
+ ; /* Wait for PLL lock. */
+
+ pll->PLL0_CON = 0x3; /* Connects the PLL. */
+ pll->PLL0_FEED = 0xAA;
+ pll->PLL0_FEED = 0x55;
+
+ /*
+ * VPB setup.
+ * PCLK = CCLK / 4.
+ */
+ VPBDIV = VPD_D4;
+
+ /*
+ * I/O pins configuration.
+ */
+ PINSEL0 = VAL_PINSEL0;
+ PINSEL1 = VAL_PINSEL1;
+ PINSEL2 = VAL_PINSEL2;
+ IO0DIR = VAL_FIO0DIR;
+ IO0SET = 0xFFFFFFFF;
+ IO1DIR = VAL_FIO1DIR;
+ IO1SET = 0xFFFFFFFF;
+
+ /*
+ * Interrupt vectors assignment.
+ */
+ InitVIC();
+ VICDefVectAddr = (IOREG32)IrqHandler;
+
+ /*
+ * System Timer initialization, 1ms intervals.
+ */
+ SetVICVector(T0IrqHandler, 0, SOURCE_Timer0);
+ VICIntEnable = INTMASK(SOURCE_Timer0);
+ TC *timer = T0Base;
+ timer->TC_PR = VAL_TC0_PRESCALER;
+ timer->TC_MR0 = (PCLK / CH_FREQUENCY) / (VAL_TC0_PRESCALER + 1);
+ timer->TC_MCR = 3; /* Interrupt and clear TC on match MR0. */
+ timer->TC_TCR = 2; /* Reset counter and prescaler. */
+ timer->TC_TCR = 1; /* Timer enabled. */
+
+ /*
+ * Other subsystems.
+ */
+ InitSerial(1, 2);
+// InitSSP();
+// InitMMC();
+// InitBuzzer();
+}
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