106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/*
|
|
* Copyright (c) 2012, STMicroelectronics.
|
|
* All rights reserved.
|
|
*
|
|
* 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 of the Institute 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 INSTITUTE 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 INSTITUTE 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.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#include "contiki.h"
|
|
#include "platform-conf.h"
|
|
|
|
#include "sys/rtimer.h"
|
|
#include "sys/process.h"
|
|
#include "dev/watchdog.h"
|
|
|
|
#include "stm32l1xx.h"
|
|
#include "stm32l1xx_hal_gpio.h"
|
|
#include "stm32l1xx_hal_rcc.h"
|
|
#include "stm32l1xx_hal_tim.h"
|
|
#include "stm32l1xx_hal_cortex.h"
|
|
|
|
|
|
volatile uint32_t rtimer_clock = 0uL;
|
|
|
|
TIM_HandleTypeDef htim2;
|
|
|
|
void TIM2_IRQHandler(void)
|
|
{
|
|
/* clear interrupt pending flag */
|
|
__HAL_TIM_CLEAR_IT(&htim2, TIM_IT_UPDATE);
|
|
|
|
rtimer_clock++;
|
|
|
|
}
|
|
|
|
|
|
void rtimer_arch_init(void)
|
|
{
|
|
TIM_ClockConfigTypeDef sClockSourceConfig;
|
|
TIM_OC_InitTypeDef sConfigOC;
|
|
|
|
__TIM2_CLK_ENABLE();
|
|
htim2.Instance = TIM2;
|
|
htim2.Init.Prescaler = PRESCALER;
|
|
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
|
|
htim2.Init.Period = 1;
|
|
|
|
HAL_TIM_Base_Init(&htim2);
|
|
HAL_TIM_Base_Start_IT(&htim2);
|
|
|
|
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
|
|
HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig);
|
|
|
|
HAL_TIM_OC_Init(&htim2);
|
|
|
|
sConfigOC.OCMode = TIM_OCMODE_TIMING;
|
|
sConfigOC.Pulse = 0;
|
|
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
|
|
HAL_TIM_OC_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_1);
|
|
|
|
|
|
__HAL_TIM_CLEAR_FLAG(&htim2, TIM_FLAG_UPDATE);
|
|
|
|
/* Enable TIM2 Update interrupt */
|
|
__HAL_TIM_ENABLE_IT(&htim2, TIM_IT_UPDATE);
|
|
|
|
__HAL_TIM_ENABLE(&htim2);
|
|
|
|
HAL_NVIC_SetPriority((IRQn_Type) TIM2_IRQn, 0, 0);
|
|
HAL_NVIC_EnableIRQ((IRQn_Type)(TIM2_IRQn));
|
|
|
|
}
|
|
|
|
rtimer_clock_t rtimer_arch_now(void)
|
|
{
|
|
return rtimer_clock;
|
|
}
|
|
|
|
void rtimer_arch_schedule(rtimer_clock_t t)
|
|
{
|
|
|
|
}
|