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Cloned AVR32 code now compiles 

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@2965 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo 2010-10-04 12:26:48 +00:00
parent c9f374091a
commit 9ad4693ba9
14 changed files with 97 additions and 450 deletions
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2
nuttx/arch/avr/include/at91uc3/irq.h
View File

@ -56,7 +56,7 @@
/* Total number of IRQ numbers */
#define NR_IRQS
#define NR_IRQS 1
/****************************************************************************
* Public Types

8
nuttx/arch/avr/include/avr32/irq.h
View File

@ -50,9 +50,11 @@
* Definitions
****************************************************************************/
/* Indices the register state save array */
/* Register state save array indices */
#defin XCPTCONTEXT_REGS 1
/* Size of the register state save array */
#define XCPTCONTEXT_REGS 1
/****************************************************************************
* Public Types
@ -87,6 +89,7 @@ struct xcptcontext
static inline irqstate_t irqsave(void)
{
# warning "Not implemented"
return 0;
}
@ -94,6 +97,7 @@ static inline irqstate_t irqsave(void)
static inline void irqrestore(irqstate_t flags)
{
# warning "Not implemented"
}
#endif /* __ASSEMBLY__ */

62
nuttx/arch/avr/src/at91uc3/at91uc3_internal.h Executable file
View File

@ -0,0 +1,62 @@
/************************************************************************************
* arch/avr/src/at91uc3b/at91uc3_internal.h
*
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_AVR_SRC_AVR32_AT91UC3_INTERNAL_H
#define __ARCH_AVR_SRC_AVR32_AT91UC3_INTERNAL_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_AVR_SRC_AVR32_AT91UC3_INTERNAL_H */

4
nuttx/arch/avr/src/at91uc3/chip.h
View File

@ -48,7 +48,7 @@
/* Get customizations for each supported chip */
#if 0
#if CONFIG_ARCH_CHIP_AT91UC3B0256
#else
# error "Unsupported AVR32 chip"
#endif
@ -57,7 +57,7 @@
* file for the proper setup
*/
#include "atuc3_memorymap.h"
#include "at91uc3_memorymap.h"
/************************************************************************************
* Public Types

1
nuttx/arch/avr/src/avr32/up_schedulesigaction.c
View File

@ -45,7 +45,6 @@
#include <nuttx/arch.h>
#include "psr.h"
#include "os_internal.h"
#include "up_internal.h"
#include "up_arch.h"

9
nuttx/arch/avr/src/avr32/up_sigdeliver.c
View File

@ -112,16 +112,15 @@ void up_sigdeliver(void)
/* Then restore the task interrupt state */
irqrestore((uint16_t)regs[REG_PRIMASK]);
#warning "Not Implemented"
/* Deliver the signals */
sigdeliver(rtcb);
/* Output any debug messaged BEFORE restoreing errno
* (becuase they may alter errno), then restore the
* original errno that is needed by the user logic
* (it is probably EINTR).
/* Output any debug messaged BEFORE restoring errno (becuase they may
* alter errno), then restore the original errno that is needed by
* the user logic (it is probably EINTR).
*/
sdbg("Resuming\n");

9
nuttx/configs/avr32dev1/include/board.h
View File

@ -51,6 +51,15 @@
/* LED definitions ******************************************************************/
#define LED_STARTED 0
#define LED_HEAPALLOCATE 1
#define LED_IRQSENABLED 2
#define LED_STACKCREATED 3
#define LED_INIRQ 4
#define LED_SIGNAL 5
#define LED_ASSERTION 6
#define LED_PANIC 7
/************************************************************************************
* Public Types
************************************************************************************/

4
nuttx/configs/avr32dev1/ostest/Make.defs
View File

@ -41,12 +41,12 @@ ifeq ($(CONFIG_AVR32_AVRTOOLSW),y)
# AVR Tools under Windows
CROSSDEV = avr32-
WINTOOL = y
ARCHCPUFLAGS = -march=uc -mpart=uc3b0256
ARCHCPUFLAGS = -mpart=uc3b0256
endif
ifeq ($(CONFIG_AVR32_AVRTOOLSL),y)
# AVR Tools under Linux
CROSSDEV = avr32-
ARCHCPUFLAGS = -march=uc -mpart=uc3b0256
ARCHCPUFLAGS = -mpart=uc3b0256
endif
ifeq ($(WINTOOL),y)

3
nuttx/configs/avr32dev1/ostest/defconfig
View File

@ -371,6 +371,8 @@ CONFIG_ARCH_KFREE=n
# CONFIG_MQ_MAXMSGSIZE - Message structures are allocated with
# a fixed payload size given by this settin (does not include
# other message structure overhead.
# CONFIG_MAX_WDOGPARMS - Maximum number of parameters that
# can be passed to a watchdog handler
# CONFIG_PREALLOC_WDOGS - The number of pre-allocated watchdog
# structures. The system manages a pool of preallocated
# watchdog structures to minimize dynamic allocations
@ -389,6 +391,7 @@ CONFIG_STDIO_BUFFER_SIZE=256
CONFIG_NUNGET_CHARS=2
CONFIG_PREALLOC_MQ_MSGS=4
CONFIG_MQ_MAXMSGSIZE=32
CONFIG_MAX_WDOGPARMS=2
CONFIG_PREALLOC_WDOGS=4
CONFIG_PREALLOC_TIMERS=4

7
nuttx/configs/avr32dev1/ostest/setenv.sh
View File

@ -39,7 +39,10 @@ fi
#
# This PATH setup assumes that you are using versin 2.1.4 of the Atmel
# AVR GNU tools installed at the default location on Windows.
# AVR GNU tools installed at the default location on Windows. NOTE
# that the path is in appended to the end of the PATH variable; this is
# because there are also many GNUWin32 binaries there that conflict with
# Cygwin versions.
#
if [ -z "${PATH_ORIG}" ]; then export PATH_ORIG="${PATH}"; fi
@ -47,6 +50,6 @@ if [ -z "${PATH_ORIG}" ]; then export PATH_ORIG="${PATH}"; fi
WD=`pwd`
export AVRTOOLS_BIN="/cygdrive/c/Program Files/Atmel/AVR Tools/AVR32 Toolchain/bin/"
export PATH="${AVRTOOLS_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
export PATH="/sbin:/usr/sbin:${PATH_ORIG}:${AVRTOOLS_BIN}"
echo "PATH : ${PATH}"

432
nuttx/configs/avr32dev1/ostest/test-result.txt
View File

@ -1,432 +0,0 @@
Output from examples/ostest for the Nucleus-2G board. June 21, 2010.
--------------------------------------------------------------------
stdio_test: write fd=1
stdio_test: write fd=2
stdio_test: Standard I/O Check: printf
user_start: Started user_main at PID=2
user_start: Exitting
stdio_test: Standard I/O Check: fprintf to stderr
stdio_test: write fd=1
stdio_test: write fd=2
stdio_test: Standard I/O Check: printf
user_start: Started user_main at PID=2
user_start: Exitting
stdio_test: Standard I/O Check: fprintf to stderr
user_main: Begin argument test
user_main: Started with argc=5
user_main: argv[0]="<noname>"
user_main: argv[1]="Arg1"
user_main: argv[2]="Arg2"
user_main: argv[3]="Arg3"
user_main: argv[4]="Arg4"
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: /dev/null test
dev_null: Read 0 bytes from /dev/null
dev_null: Wrote 1024 bytes to /dev/null
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: mutex test
Initializing mutex
Starting thread 1
Starting thread 2
Thread1 Thread2
Loops 32 32
Errors 0 0
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: cancel test
cancel_test: Test 1: Normal Cancelation
cancel_test: Starting thread
start_thread: Initializing mutex
start_thread: Initializing cond
start_thread: Starting thread
thread_waiter: Taking mutex
thread_waiter: Starting wait for condition
start_thread: Yielding
cancel_test: Canceling thread
cancel_test: Joining
cancel_test: waiter exited with result=ffffffff
cancel_test: PASS thread terminated with PTHREAD_CANCELED
cancel_test: Test 2: Cancelation of detached thread
cancel_test: Re-starting thread
restart_thread: Destroying cond
restart_thread: Destroying mutex
restart_thread: Re-starting thread
start_thread: Initializing mutex
start_thread: Initializing cond
start_thread: Starting thread
thread_waiter: Taking mutex
thread_waiter: Starting wait for condition
start_thread: Yielding
cancel_test: Canceling thread
cancel_test: Joining
cancel_test: PASS pthread_join failed with status=ESRCH
cancel_test: Test 3: Non-cancelable threads
cancel_test: Re-starting thread (non-cancelable)
restart_thread: Destroying cond
restart_thread: Destroying mutex
restart_thread: Re-starting thread
start_thread: Initializing mutex
start_thread: Initializing cond
start_thread: Starting thread
thread_waiter: Taking mutex
thread_waiter: Starting wait for condition
thread_waiter: Setting non-cancelable
start_thread: Yielding
cancel_test: Canceling thread
cancel_test: Joining
thread_waiter: Releasing mutex
thread_waiter: Setting cancelable
cancel_test: waiter exited with result=ffffffff
cancel_test: PASS thread terminated with PTHREAD_CANCELED
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: semaphore test
sem_test: Initializing semaphore to 0
sem_test: Starting waiter thread 1
sem_test: Set thread 1 priority to 191
waiter_func: Thread 1 Started
waiter_func: Thread 1 initial semaphore value = 0
waiter_func: Thread 1 waiting on semaphore
sem_test: Starting waiter thread 2
sem_test: Set thread 2 priority to 128
waiter_func: Thread 2 Started
waiter_func: Thread 2 initial semaphore value = -1
waiter_func: Thread 2 waiting on semaphore
sem_test: Starting poster thread 3
sem_test: Set thread 3 priority to 64
poster_func: Thread 3 started
poster_func: Thread 3 semaphore value = -2
poster_func: Thread 3 posting semaphore
waiter_func: Thread 1 awakened
waiter_func: Thread 1 new semaphore value = -1
waiter_func: Thread 1 done
poster_func: Thread 3 new semaphore value = -1
poster_func: Thread 3 semaphore value = -1
poster_func: Thread 3 posting semaphore
waiter_func: Thread 2 awakened
waiter_func: Thread 2 new semaphore value = 0
waiter_func: Thread 2 done
poster_func: Thread 3 new semaphore value = 0
poster_func: Thread 3 done
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: condition variable test
cond_test: Initializing mutex
cond_test: Initializing cond
cond_test: Starting waiter
cond_test: Set thread 1 priority to 128
waiter_thread: Started
cond_test: Starting signaler
cond_test: Set thread 2 priority to 64
thread_signaler: Started
thread_signaler: Terminating
cond_test: signaler terminated, now cancel the waiter
cond_test: Waiter Signaler
cond_test: Loops 32 32
cond_test: Errors 0 0
cond_test:
cond_test: 0 times, waiter did not have to wait for data
cond_test: 0 times, data was already available when the signaler run
cond_test: 0 times, the waiter was in an unexpected state when the signaler ran
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: timed wait test
thread_waiter: Initializing mutex
timedwait_test: Initializing cond
timedwait_test: Starting waiter
timedwait_test: Set thread 2 priority to 177
thread_waiter: Taking mutex
thread_waiter: Starting 5 second wait for condition
timedwait_test: Joining
thread_waiter: pthread_cond_timedwait timed out
thread_waiter: Releasing mutex
thread_waiter: Exit with status 0x12345678
timedwait_test: waiter exited with result=12345678
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: message queue test
mqueue_test: Starting receiver
mqueue_test: Set receiver priority to 128
receiver_thread: Starting
mqueue_test: Starting sender
mqueue_test: Set sender thread priority to 64
mqueue_test: Waiting for sender to complete
sender_thread: Starting
receiver_thread: mq_receive succeeded on msg 0
sender_thread: mq_send succeeded on msg 0
receiver_thread: mq_receive succeeded on msg 1
sender_thread: mq_send succeeded on msg 1
receiver_thread: mq_receive succeeded on msg 2
sender_thread: mq_send succeeded on msg 2
receiver_thread: mq_receive succeeded on msg 3
sender_thread: mq_send succeeded on msg 3
receiver_thread: mq_receive succeeded on msg 4
sender_thread: mq_send succeeded on msg 4
receiver_thread: mq_receive succeeded on msg 5
sender_thread: mq_send succeeded on msg 5
receiver_thread: mq_receive succeeded on msg 6
sender_thread: mq_send succeeded on msg 6
receiver_thread: mq_receive succeeded on msg 7
sender_thread: mq_send succeeded on msg 7
receiver_thread: mq_receive succeeded on msg 8
sender_thread: mq_send succeeded on msg 8
receiver_thread: mq_receive succeeded on msg 9
sender_thread: mq_send succeeded on msg 9
sender_thread: returning nerrors=0
mqueue_test: Killing receiver
receiver_thread: mq_receive interrupted!
receiver_thread: returning nerrors=0
mqueue_test: Canceling receiver
mqueue_test: receiver has already terminated
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: timed message queue test
timedmqueue_test: Starting sender
sender_thread: Starting
sender_thread: mq_timedsend succeeded on msg 0
sender_thread: mq_timedsend succeeded on msg 1
sender_thread: mq_timedsend succeeded on msg 2
sender_thread: mq_timedsend succeeded on msg 3
sender_thread: mq_timedsend succeeded on msg 4
sender_thread: mq_timedsend succeeded on msg 5
sender_thread: mq_timedsend succeeded on msg 6
sender_thread: mq_timedsend succeeded on msg 7
sender_thread: mq_timedsend succeeded on msg 8
timedmqueue_test: Waiting for sender to complete
sender_thread: mq_timedsend 9 timed out as expected
sender_thread: returning nerrors=0
timedmqueue_test: Starting receiver
receiver_thread: Starting
receiver_thread: mq_timedreceive succeeded on msg 0
receiver_thread: mq_timedreceive succeeded on msg 1
receiver_thread: mq_timedreceive succeeded on msg 2
receiver_thread: mq_timedreceive succeeded on msg 3
receiver_thread: mq_timedreceive succeeded on msg 4
receiver_thread: mq_timedreceive succeeded on msg 5
receiver_thread: mq_timedreceive succeeded on msg 6
receiver_thread: mq_timedreceive succeeded on msg 7
receiver_thread: mq_timedreceive succeeded on msg 8
timedmqueue_test: Waiting for receiver to complete
receiver_thread: Receive 9 timed out as expected
receiver_thread: returning nerrors=0
timedmqueue_test: Test complete
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: signal handler test
sighand_test: Initializing semaphore to 0
sighand_test: Starting waiter task
sighand_test: Started waiter_main pid=20
waiter_main: Waiter started
waiter_main: Unmasking signal 17
waiter_main: Registering signal handler
waiter_main: oact.sigaction=0 oact.sa_flags=0 oact.sa_mask=0
waiter_main: Waiting on semaphore
sighand_test: Signaling pid=20 with signo=17 sigvalue=42
wakeup_action: Received signal 17
wakeup_action: sival_int=42
wakeup_action: si_code=1
wakeup_action: ucontext=0
waiter_main: sem_wait() successfully interrupted by signal
waiter_main: done
sighand_test: done
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: POSIX timer test
timer_test: Initializing semaphore to 0
timer_test: Unmasking signal 17
timer_test: Registering signal handler
timer_test: oact.sigaction=0 oact.sa_flags=0 oact.sa_mask=0
timer_test: Creating timer
timer_test: Starting timer
timer_test: Waiting on semaphore
timer_expiration: Received signal 17
timer_expiration: sival_int=42
timer_expiration: si_code=2 (SI_TIMER)
timer_expiration: ucontext=0
timer_test: sem_wait() successfully interrupted by signal
timer_test: g_nsigreceived=1
timer_test: Waiting on semaphore
timer_expiration: Received signal 17
timer_expiration: sival_int=42
timer_expiration: si_code=2 (SI_TIMER)
timer_expiration: ucontext=0
timer_test: sem_wait() successfully interrupted by signal
timer_test: g_nsigreceived=2
timer_test: Waiting on semaphore
timer_expiration: Received signal 17
timer_expiration: sival_int=42
timer_expiration: si_code=2 (SI_TIMER)
timer_expiration: ucontext=0
timer_test: sem_wait() successfully interrupted by signal
timer_test: g_nsigreceived=3
timer_test: Waiting on semaphore
timer_expiration: Received signal 17
timer_expiration: sival_int=42
timer_expiration: si_code=2 (SI_TIMER)
timer_expiration: ucontext=0
timer_test: sem_wait() successfully interrupted by signal
timer_test: g_nsigreceived=4
timer_test: Waiting on semaphore
timer_expiration: Received signal 17
timer_expiration: sival_int=42
timer_expiration: si_code=2 (SI_TIMER)
timer_expiration: ucontext=0
timer_test: sem_wait() successfully interrupted by signal
timer_test: g_nsigreceived=5
timer_test: Deleting timer
timer_test: done
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: round-robin scheduler test
rr_test: Starting sieve1 thread
rr_test: Set thread priority to 1
rr_test: Set thread policty to SCHED_RR
rr_test: Starting sieve1 thread
sieve1 started
rr_test: Waiting for sieves to complete -- this should take awhile
rr_test: If RR scheduling is working, they should start and complete at
rr_test: about the same time
sieve2 started
sieve1 finished
sieve2 finished
rr_test: Done
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: barrier test
barrier_test: Initializing barrier
barrier_func: Thread 0 started
barrier_test: Thread 0 created
barrier_func: Thread 1 started
barrier_test: Thread 1 created
barrier_func: Thread 2 started
barrier_test: Thread 2 created
barrier_func: Thread 0 calling pthread_barrier_wait()
barrier_func: Thread 1 calling pthread_barrier_wait()
barrier_func: Thread 2 calling pthread_barrier_wait()
barrier_func: Thread 2, back with status=PTHREAD_BARRIER_SERIAL_THREAD (I AM SPECIAL)
barrier_func: Thread 0, back with status=0 (I am not special)
barrier_func: Thread 1, back with status=0 (I am not special)
barrier_func: Thread 2 done
barrier_func: Thread 0 done
barrier_func: Thread 1 done
barrier_test: Thread 0 completed with result=0
barrier_test: Thread 1 completed with result=0
barrier_test: Thread 2 completed with result=0
End of test memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
Final memory usage:
VARIABLE BEFORE AFTER
======== ======== ========
arena b1c0 b1c0
ordblks 3 3
mxordblk 7ff0 7ff0
uordblks 1d20 1d20
fordblks 94a0 94a0
user_main: Exitting

2
nuttx/configs/avr32dev1/src/up_boot.c
View File

@ -47,7 +47,7 @@
#include "up_arch.h"
#include "up_internal.h"
#include "avr32_internal.h"
#include "at91uc3_internal.h"
#include "avr32dev1_internal.h"
/************************************************************************************

2
nuttx/configs/avr32dev1/src/up_leds.c
View File

@ -50,7 +50,7 @@
#include "up_arch.h"
#include "up_internal.h"
#include "avr32_internal.h"
#include "at91uc3_internal.h"
#include "avr32dev1_internal.h"
#ifdef CONFIG_ARCH_LEDS

2
nuttx/sched/irq_initialize.c
View File

@ -1,7 +1,7 @@
/****************************************************************************
* sched/irq_initialize.c
*
* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
* Copyright (C) 2007-2008, 2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without