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85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
/*
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* Copyright (C) 2020 BlueKitchen GmbH
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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 the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH 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 MATTHIAS
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* RINGWALD 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 LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* 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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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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#define BTSTACK_FILE__ "hal_timer.c"
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/*
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* hal_timer.c
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* HAL for 32.768 kHz low power timer with 16 bit resolution
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*/
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#include "hal_timer.h"
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#include "stm32l4xx.h"
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// access to timers
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extern LPTIM_HandleTypeDef hlptim1;
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static void (*hal_timer_callback)(void);
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void HAL_LPTIM_CompareMatchCallback(LPTIM_HandleTypeDef *hlptim){
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UNUSED(hlptim);
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(*hal_timer_callback)();
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}
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void HAL_LPTIM_AutoReloadMatchCallback(LPTIM_HandleTypeDef *hlptim){
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UNUSED(hlptim);
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static uint32_t time_seconds = 0;
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time_seconds += 2;
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// printf("Time: %4u s\n", time_seconds);
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}
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void hal_timer_init(void){
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}
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void hal_timer_set_callback(void (*callback)(void)){
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hal_timer_callback = callback;
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}
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uint16_t hal_timer_get_ticks(void){
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return HAL_LPTIM_ReadCounter(&hlptim1);
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}
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void hal_timer_stop(void){
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__HAL_LPTIM_DISABLE_IT(&hlptim1, LPTIM_IT_CMPM);
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__HAL_LPTIM_CLEAR_FLAG(&hlptim1, LPTIM_IT_CMPM);
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}
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void hal_timer_start(uint16_t timeout_ticks){
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__HAL_LPTIM_COMPARE_SET(&hlptim1, timeout_ticks);
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__HAL_LPTIM_ENABLE_IT(&hlptim1, LPTIM_IT_CMPM);
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} |