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mbed-dev/targets/TARGET_STM/us_ticker_32b.c
- Committer:
- Zaitsev
- Date:
- 2017-01-10
- Revision:
- 10:41552d038a69
File content as of revision 10:41552d038a69:
/* mbed Microcontroller Library * Copyright (c) 2006-2016 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <stddef.h> #include "us_ticker_api.h" #include "PeripheralNames.h" #include "hal_tick.h" // A 32-bit timer is used #if !TIM_MST_16BIT TIM_HandleTypeDef TimMasterHandle; static int us_ticker_inited = 0; void us_ticker_init(void) { if (us_ticker_inited) return; us_ticker_inited = 1; TimMasterHandle.Instance = TIM_MST; HAL_InitTick(0); // The passed value is not used } uint32_t us_ticker_read() { if (!us_ticker_inited) us_ticker_init(); return TIM_MST->CNT; } void us_ticker_set_interrupt(timestamp_t timestamp) { TimMasterHandle.Instance = TIM_MST; // Set new output compare value __HAL_TIM_SET_COMPARE(&TimMasterHandle, TIM_CHANNEL_1, (uint32_t)timestamp); // Enable IT __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1); } void us_ticker_disable_interrupt(void) { TimMasterHandle.Instance = TIM_MST; __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1); } void us_ticker_clear_interrupt(void) { TimMasterHandle.Instance = TIM_MST; __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1); } #endif // !TIM_MST_16BIT