aboutsummaryrefslogtreecommitdiff
path: root/lib/lpc17xx
diff options
context:
space:
mode:
authorTaylor Vesely2012-03-22 12:51:57 -0600
committerPiotr Esden-Tempski2012-03-22 16:22:22 -0700
commitcaade9729943db3e5ab228eab33d8175ab680fce (patch)
tree9bc24d94c75cf3c2ea1380af40c04b81aa3db2ac /lib/lpc17xx
parent9eb77c9fd7f9d44d94c2bcc8deb96a5b3ef8715e (diff)
Created vector.c by example. Added reset_handler entry to linker script.
Diffstat (limited to 'lib/lpc17xx')
-rw-r--r--lib/lpc17xx/vector.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/lib/lpc17xx/vector.c b/lib/lpc17xx/vector.c
new file mode 100644
index 0000000..016db7a
--- /dev/null
+++ b/lib/lpc17xx/vector.c
@@ -0,0 +1,94 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define WEAK __attribute__ ((weak))
+
+/* Symbols exported by the linker script(s). */
+extern unsigned _etext, _data, _edata, _ebss, _stack;
+
+void main(void);
+void reset_handler(void);
+void blocking_handler(void);
+void null_handler(void);
+
+void WEAK nmi_handler(void);
+void WEAK hard_fault_handler(void);
+void WEAK mem_manage_handler(void);
+void WEAK bus_fault_handler(void);
+void WEAK usage_fault_handler(void);
+void WEAK sv_call_handler(void);
+void WEAK debug_monitor_handler(void);
+void WEAK pend_sv_handler(void);
+void WEAK sys_tick_handler(void);
+
+/* TODO: Interrupt handler prototypes */
+
+__attribute__ ((section(".vectors")))
+void (*const vector_table[]) (void) = {
+ (void*)&_stack, /* Addr: 0x0000_0000 */
+ reset_handler, /* Addr: 0x0000_0004 */
+ nmi_handler, /* Addr: 0x0000_0008 */
+ hard_fault_handler, /* Addr: 0x0000_000C */
+ mem_manage_handler, /* Addr: 0x0000_0010 */
+ bus_fault_handler, /* Addr: 0x0000_0014 */
+ usage_fault_handler, /* Addr: 0x0000_0018 */
+ 0, 0, 0, 0, /* Reserved Addr: 0x0000_001C - 0x0000_002B */
+ sv_call_handler, /* Addr: 0x0000_002C */
+ debug_monitor_handler, /* Addr: 0x0000_0030 */
+ 0, /* Reserved Addr: 0x0000_00034 */
+ pend_sv_handler, /* Addr: 0x0000_0038 */
+ sys_tick_handler, /* Addr: 0x0000_003C */
+};
+
+
+void reset_handler(void)
+{
+ volatile unsigned *src, *dest;
+ __asm__("MSR msp, %0" : : "r"(&_stack));
+
+ for (src = &_etext, dest = &_data; dest < &_edata; src++, dest++)
+ *dest = *src;
+
+ while (dest < &_ebss)
+ *dest++ = 0;
+
+ /* Call the application's entry point. */
+ main();
+}
+
+void blocking_handler(void)
+{
+ while (1) ;
+}
+
+void null_handler(void)
+{
+ /* Do nothing. */
+}
+
+#pragma weak nmi_handler = null_handler
+#pragma weak hard_fault_handler = blocking_handler
+#pragma weak mem_manage_handler = blocking_handler
+#pragma weak bus_fault_handler = blocking_handler
+#pragma weak usage_fault_handler = blocking_handler
+#pragma weak sv_call_handler = null_handler
+#pragma weak debug_monitor_handler = null_handler
+#pragma weak pend_sv_handler = null_handler
+#pragma weak sys_tick_handler = null_handler
+/* TODO: Interrupt handler weak aliases */