USB Serial application
Fork of USBSerial_HelloWorld by
Diff: mbed-dev/targets/TARGET_STM/us_ticker_32b.c
- Revision:
- 10:41552d038a69
diff -r d88699a0905a -r 41552d038a69 mbed-dev/targets/TARGET_STM/us_ticker_32b.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_STM/us_ticker_32b.c Tue Jan 10 20:42:26 2017 +0000 @@ -0,0 +1,65 @@ +/* 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