936df1bcb5
Squashed commit of the following:
Change all calls to usleep() in the OS proper to calls to nxsig_usleep()
sched/signal: Add a new OS internal function nxsig_usleep() that is functionally equivalent to usleep() but does not cause a cancellaption point and does not modify the errno variable.
sched/signal: Add a new OS internal function nxsig_sleep() that is functionally equivalent to sleep() but does not cause a cancellaption point.
280 lines
8.1 KiB
C
280 lines
8.1 KiB
C
/****************************************************************************
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* configs/viewtool-stm32f107/src/stm32_highpri.c
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*
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* Copyright (C) 2014, 2017 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <nuttx/arch.h>
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#include <nuttx/signal.h>
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#include <arch/irq.h>
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#include <arch/chip/chip.h>
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#include <arch/board/board.h>
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#include "up_internal.h"
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#include "ram_vectors.h"
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#include "stm32_tim.h"
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#include "viewtool_stm32f107.h"
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#ifdef CONFIG_VIEWTOOL_HIGHPRI
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#ifndef CONFIG_ARCH_CHIP_STM32F103VC
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# warning This only only been verified with CONFIG_ARCH_CHIP_STM32F103VC
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#endif
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#ifndef CONFIG_ARCH_HIPRI_INTERRUPT
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# error CONFIG_ARCH_HIPRI_INTERRUPT is required
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#endif
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#ifndef CONFIG_ARCH_RAMVECTORS
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# error CONFIG_ARCH_RAMVECTORS is required
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#endif
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#ifndef CONFIG_STM32_TIM6
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# error CONFIG_STM32_TIM6 is required
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#endif
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#ifndef CONFIG_VIEWTOOL_TIM6_FREQUENCY
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# warning CONFIG_VIEWTOOL_TIM6_FREQUENCY defaulting to STM32_APB1_TIM6_CLKIN
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# define CONFIG_VIEWTOOL_TIM6_FREQUENCY STM32_APB1_TIM6_CLKIN
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#endif
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#ifndef CONFIG_VIEWTOOL_TIM6_PERIOD
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# warning CONFIG_VIEWTOOL_TIM6_PERIOD defaulting to 1MS
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# define CONFIG_VIEWTOOL_TIM6_PERIOD (CONFIG_VIEWTOOL_TIM6_FREQUENCY / 1000)
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#endif
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#ifndef CONFIG_ARCH_IRQPRIO
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# error CONFIG_ARCH_IRQPRIO is required
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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struct highpri_s
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{
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FAR struct stm32_tim_dev_s *dev; /* TIM6 driver instance */
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volatile uint64_t basepri[16];
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volatile uint64_t handler;
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volatile uint64_t thread;
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};
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static struct highpri_s g_highpri;
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: tim6_handler
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*
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* Description:
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* This is the handler for the high speed TIM6 interrupt.
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*
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****************************************************************************/
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void tim6_handler(void)
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{
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uint8_t basepri;
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int index;
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/* Acknowledge the timer interrupt */
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STM32_TIM_ACKINT(g_highpri.dev, 0);
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/* Increment the count associated with the current basepri */
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basepri = getbasepri();
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index = ((basepri >> 4) & 15);
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g_highpri.basepri[index]++;
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/* Check if we are in an interrupt handle */
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if (up_interrupt_context())
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{
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g_highpri.handler++;
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}
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else
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{
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g_highpri.thread++;
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}
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: highpri_main
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*
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* Description:
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* Main entry point in into the high priority interrupt test.
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*
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****************************************************************************/
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int highpri_main(int argc, char *argv[])
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{
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FAR struct stm32_tim_dev_s *dev;
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uint64_t basepri[16];
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uint64_t handler;
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uint64_t thread;
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uint64_t total;
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uint32_t seconds;
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int prescaler;
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int ret;
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int i;
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printf("highpri_main: Started\n");
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/* Configure basic timer TIM6 and enable interrupts */
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dev = stm32_tim_init(6);
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if (!dev)
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{
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fprintf(stderr, "highpri_main: ERROR: stm32_tim_init(6) failed\n");
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return EXIT_FAILURE;
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}
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g_highpri.dev = dev;
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prescaler = STM32_TIM_SETCLOCK(dev, CONFIG_VIEWTOOL_TIM6_FREQUENCY);
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printf("TIM6 CLKIN=%d Hz, Frequency=%d Hz, prescaler=%d\n",
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STM32_APB1_TIM6_CLKIN, CONFIG_VIEWTOOL_TIM6_FREQUENCY, prescaler);
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STM32_TIM_SETPERIOD(dev, CONFIG_VIEWTOOL_TIM6_PERIOD);
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printf("TIM6 period=%d cyles; interrupt rate=%d Hz\n",
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CONFIG_VIEWTOOL_TIM6_PERIOD,
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CONFIG_VIEWTOOL_TIM6_FREQUENCY/CONFIG_VIEWTOOL_TIM6_PERIOD);
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/* Attach TIM6 ram vector */
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ret = up_ramvec_attach(STM32_IRQ_TIM6, tim6_handler);
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if (ret < 0)
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{
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fprintf(stderr, "highpri_main: ERROR: up_ramvec_attach failed: %d\n", ret);
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return EXIT_FAILURE;
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}
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/* Set the priority of the TIM6 interrupt vector */
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ret = up_prioritize_irq(STM32_IRQ_TIM6, NVIC_SYSH_HIGH_PRIORITY);
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if (ret < 0)
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{
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fprintf(stderr, "highpri_main: ERROR: up_prioritize_irq failed: %d\n", ret);
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return EXIT_FAILURE;
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}
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/* Enable the timer interrupt at the NVIC and at TIM6 */
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up_enable_irq(STM32_IRQ_TIM6);
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STM32_TIM_ENABLEINT(dev, 0);
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/* Monitor interrupts */
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seconds = 0;
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for (;;)
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{
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/* Flush stdout and wait a bit */
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fflush(stdout);
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nxsig_sleep(1);
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seconds++;
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/* Sample counts so that they are not volatile. Missing a count now
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* and then is a normal consequence of this design.
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*/
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for (i = 0; i < 16; i++)
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{
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basepri[i] = g_highpri.basepri[i];
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}
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handler = g_highpri.handler;
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thread = g_highpri.thread;
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/* Then print out what is happening */
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printf("Elapsed time: %d seconds\n\n", seconds);
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for (i = 0, total = 0; i < 16; i++)
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{
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total += basepri[i];
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}
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if (total > 0)
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{
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for (i = 0; i < 16; i++)
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{
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if (basepri[i] > 0)
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{
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printf(" basepri[%02x]: %lld (%d%%)\n",
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i << 4, basepri[i],
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(int)((100* basepri[i] + (total / 2)) / total));
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}
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}
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}
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total = handler + thread;
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if (total > 0)
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{
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printf(" Handler: %lld (%d%%)\n",
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handler, (int)((100*handler + (total / 2)) / total));
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printf(" Thread: %lld (%d%%)\n\n",
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thread, (int)((100*thread + (total / 2)) / total));
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}
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}
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return EXIT_SUCCESS;
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}
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#endif /* CONFIG_VIEWTOOL_HIGHPRI */
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