105 lines
3.8 KiB
C
105 lines
3.8 KiB
C
/*
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* Copyright (c) 2012, STMicroelectronics.
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* All rights reserved.
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be 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 INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki.h"
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#include "platform-conf.h"
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#include "sys/rtimer.h"
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#include "sys/process.h"
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#include "dev/watchdog.h"
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#include "stm32l1xx.h"
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#include "stm32l1xx_hal_gpio.h"
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#include "stm32l1xx_hal_rcc.h"
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#include "stm32l1xx_hal_tim.h"
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#include "stm32l1xx_hal_cortex.h"
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#include "st-lib.h"
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/*---------------------------------------------------------------------------*/
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volatile uint32_t rtimer_clock = 0uL;
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/*---------------------------------------------------------------------------*/
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st_lib_tim_handle_typedef htim2;
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/*---------------------------------------------------------------------------*/
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void
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st_lib_tim2_irq_handler(void)
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{
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/* clear interrupt pending flag */
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st_lib_hal_tim_clear_it(&htim2, TIM_IT_UPDATE);
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rtimer_clock++;
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}
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/*---------------------------------------------------------------------------*/
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void
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rtimer_arch_init(void)
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{
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st_lib_tim_clock_config_typedef s_clock_source_config;
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st_lib_tim_oc_init_typedef s_config_oc;
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st_lib_tim2_clk_enable();
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htim2.Instance = TIM2;
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htim2.Init.Prescaler = PRESCALER;
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htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
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htim2.Init.Period = 1;
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st_lib_hal_tim_base_init(&htim2);
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st_lib_hal_tim_base_start_it(&htim2);
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s_clock_source_config.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
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st_lib_hal_tim_config_clock_source(&htim2, &s_clock_source_config);
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st_lib_hal_tim_oc_init(&htim2);
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s_config_oc.OCMode = TIM_OCMODE_TIMING;
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s_config_oc.Pulse = 0;
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s_config_oc.OCPolarity = TIM_OCPOLARITY_HIGH;
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st_lib_hal_tim_oc_config_channel(&htim2, &s_config_oc, TIM_CHANNEL_1);
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st_lib_hal_tim_clear_flag(&htim2, TIM_FLAG_UPDATE);
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/* Enable TIM2 Update interrupt */
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st_lib_hal_tim_enable_it(&htim2, TIM_IT_UPDATE);
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st_lib_hal_tim_enable(&htim2);
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st_lib_hal_nvic_set_priority((st_lib_irq_n_type)TIM2_IRQn, 0, 0);
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st_lib_hal_nvic_enable_irq((st_lib_irq_n_type)(TIM2_IRQn));
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}
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/*---------------------------------------------------------------------------*/
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rtimer_clock_t
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rtimer_arch_now(void)
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{
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return rtimer_clock;
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}
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/*---------------------------------------------------------------------------*/
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void
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rtimer_arch_schedule(rtimer_clock_t t)
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{
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}
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/*---------------------------------------------------------------------------*/
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