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author | Gregory Nutt <gnutt@nuttx.org> | 2013-06-02 13:04:40 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2013-06-02 13:04:40 -0600 |
commit | 9c0f7e4217cf195b2f83175b0014e273fbc805da (patch) | |
tree | 46f769b6188d65d2f3471b9fe7bdae2676162f56 /nuttx/arch/arm/src/sam3u/sam3u_timerisr.c | |
parent | 872bef7d41462d36b81ddc8de82a2cde18eaf096 (diff) | |
download | px4-nuttx-9c0f7e4217cf195b2f83175b0014e273fbc805da.tar.gz px4-nuttx-9c0f7e4217cf195b2f83175b0014e273fbc805da.tar.bz2 px4-nuttx-9c0f7e4217cf195b2f83175b0014e273fbc805da.zip |
Eliminated sam3u_internal.h. Use separate header files instead. More renaming from sam3u_ to sam_ to make room in the namespce for the sam4l_
Diffstat (limited to 'nuttx/arch/arm/src/sam3u/sam3u_timerisr.c')
-rw-r--r-- | nuttx/arch/arm/src/sam3u/sam3u_timerisr.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/nuttx/arch/arm/src/sam3u/sam3u_timerisr.c b/nuttx/arch/arm/src/sam3u/sam3u_timerisr.c deleted file mode 100644 index cddd1cd05..000000000 --- a/nuttx/arch/arm/src/sam3u/sam3u_timerisr.c +++ /dev/null @@ -1,162 +0,0 @@ -/**************************************************************************** - * arch/arm/src/sam3u/sam3u_timerisr.c - * - * Copyright (C) 2010, 2013 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * 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. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <stdint.h> -#include <time.h> -#include <debug.h> -#include <nuttx/arch.h> -#include <arch/board/board.h> - -#include "nvic.h" -#include "clock_internal.h" -#include "up_internal.h" -#include "up_arch.h" - -#include "chip.h" -#include "sam3u_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/* The desired timer interrupt frequency is provided by the definition - * CLK_TCK (see include/time.h). CLK_TCK defines the desired number of - * system clock ticks per second. That value is a user configurable setting - * that defaults to 100 (100 ticks per second = 10 MS interval). - * - * The SAM3U feeds the Cortex System Timer (SysTick) with the MCK clock or - * the MCK clock divided by 8, configurable with the CLKSOURCE bit in the - * SysTick Control and Status register. - */ - -#undef CONFIG_SAM34_SYSTICK_HCLKd8 /* Power up default is MCK, not MCK/8 */ - -#if CONFIG_SAM34_SYSTICK_HCLKd8 -# define SYSTICK_RELOAD ((SAM_MCK_FREQUENCY / 8 / CLK_TCK) - 1) -#else -# define SYSTICK_RELOAD ((SAM_MCK_FREQUENCY / CLK_TCK) - 1) -#endif - -/* The size of the reload field is 24 bits. Verify that the reload value - * will fit in the reload register. - */ - -#if SYSTICK_RELOAD > 0x00ffffff -# error SYSTICK_RELOAD exceeds the range of the RELOAD register -#endif - -/**************************************************************************** - * Private Types - ****************************************************************************/ - -/**************************************************************************** - * Private Function Prototypes - ****************************************************************************/ - -/**************************************************************************** - * Global Functions - ****************************************************************************/ - -/**************************************************************************** - * Function: up_timerisr - * - * Description: - * The timer ISR will perform a variety of services for various portions - * of the systems. - * - ****************************************************************************/ - -int up_timerisr(int irq, uint32_t *regs) -{ - /* Process timer interrupt */ - - sched_process_timer(); - return 0; -} - -/**************************************************************************** - * Function: up_timerinit - * - * Description: - * This function is called during start-up to initialize - * the timer interrupt. - * - ****************************************************************************/ - -void up_timerinit(void) -{ - uint32_t regval; - - /* Set the SysTick interrupt to the default priority */ - - regval = getreg32(NVIC_SYSH12_15_PRIORITY); - regval &= ~NVIC_SYSH_PRIORITY_PR15_MASK; - regval |= (NVIC_SYSH_PRIORITY_DEFAULT << NVIC_SYSH_PRIORITY_PR15_SHIFT); - putreg32(regval, NVIC_SYSH12_15_PRIORITY); - - /* Make sure that the SYSTICK clock source is set correctly */ - -#if 0 /* Does not work. Comes up with HCLK source and I can't change it */ - regval = getreg32(NVIC_SYSTICK_CTRL); -#if CONFIG_SAM34_SYSTICK_HCLKd8 - regval &= ~NVIC_SYSTICK_CTRL_CLKSOURCE; -#else - regval |= NVIC_SYSTICK_CTRL_CLKSOURCE; -#endif - putreg32(regval, NVIC_SYSTICK_CTRL); -#endif - - /* Configure SysTick to interrupt at the requested rate */ - - putreg32(SYSTICK_RELOAD, NVIC_SYSTICK_RELOAD); - - /* Attach the timer interrupt vector */ - - (void)irq_attach(SAM_IRQ_SYSTICK, (xcpt_t)up_timerisr); - - /* Enable SysTick interrupts */ - - putreg32((NVIC_SYSTICK_CTRL_CLKSOURCE|NVIC_SYSTICK_CTRL_TICKINT|NVIC_SYSTICK_CTRL_ENABLE), NVIC_SYSTICK_CTRL); - - /* And enable the timer interrupt */ - - up_enable_irq(SAM_IRQ_SYSTICK); -} |