Mouse code for the MacroRat
mbed-dev/targets/TARGET_STM/us_ticker_32b.c@34:69342782fb68, 2017-05-26 (annotated)
- Committer:
- sahilmgandhi
- Date:
- Fri May 26 17:21:04 2017 +0000
- Revision:
- 34:69342782fb68
- Parent:
- 18:6a4db94011d3
Added small reverse turns before the break so that we can stop faster.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
sahilmgandhi | 18:6a4db94011d3 | 1 | /* mbed Microcontroller Library |
sahilmgandhi | 18:6a4db94011d3 | 2 | * Copyright (c) 2006-2016 ARM Limited |
sahilmgandhi | 18:6a4db94011d3 | 3 | * |
sahilmgandhi | 18:6a4db94011d3 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
sahilmgandhi | 18:6a4db94011d3 | 5 | * you may not use this file except in compliance with the License. |
sahilmgandhi | 18:6a4db94011d3 | 6 | * You may obtain a copy of the License at |
sahilmgandhi | 18:6a4db94011d3 | 7 | * |
sahilmgandhi | 18:6a4db94011d3 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
sahilmgandhi | 18:6a4db94011d3 | 9 | * |
sahilmgandhi | 18:6a4db94011d3 | 10 | * Unless required by applicable law or agreed to in writing, software |
sahilmgandhi | 18:6a4db94011d3 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
sahilmgandhi | 18:6a4db94011d3 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
sahilmgandhi | 18:6a4db94011d3 | 13 | * See the License for the specific language governing permissions and |
sahilmgandhi | 18:6a4db94011d3 | 14 | * limitations under the License. |
sahilmgandhi | 18:6a4db94011d3 | 15 | */ |
sahilmgandhi | 18:6a4db94011d3 | 16 | #include <stddef.h> |
sahilmgandhi | 18:6a4db94011d3 | 17 | #include "us_ticker_api.h" |
sahilmgandhi | 18:6a4db94011d3 | 18 | #include "PeripheralNames.h" |
sahilmgandhi | 18:6a4db94011d3 | 19 | #include "hal_tick.h" |
sahilmgandhi | 18:6a4db94011d3 | 20 | |
sahilmgandhi | 18:6a4db94011d3 | 21 | // A 32-bit timer is used |
sahilmgandhi | 18:6a4db94011d3 | 22 | #if !TIM_MST_16BIT |
sahilmgandhi | 18:6a4db94011d3 | 23 | |
sahilmgandhi | 18:6a4db94011d3 | 24 | TIM_HandleTypeDef TimMasterHandle; |
sahilmgandhi | 18:6a4db94011d3 | 25 | |
sahilmgandhi | 18:6a4db94011d3 | 26 | static int us_ticker_inited = 0; |
sahilmgandhi | 18:6a4db94011d3 | 27 | |
sahilmgandhi | 18:6a4db94011d3 | 28 | void us_ticker_init(void) |
sahilmgandhi | 18:6a4db94011d3 | 29 | { |
sahilmgandhi | 18:6a4db94011d3 | 30 | if (us_ticker_inited) return; |
sahilmgandhi | 18:6a4db94011d3 | 31 | us_ticker_inited = 1; |
sahilmgandhi | 18:6a4db94011d3 | 32 | |
sahilmgandhi | 18:6a4db94011d3 | 33 | TimMasterHandle.Instance = TIM_MST; |
sahilmgandhi | 18:6a4db94011d3 | 34 | |
sahilmgandhi | 18:6a4db94011d3 | 35 | HAL_InitTick(0); // The passed value is not used |
sahilmgandhi | 18:6a4db94011d3 | 36 | } |
sahilmgandhi | 18:6a4db94011d3 | 37 | |
sahilmgandhi | 18:6a4db94011d3 | 38 | uint32_t us_ticker_read() |
sahilmgandhi | 18:6a4db94011d3 | 39 | { |
sahilmgandhi | 18:6a4db94011d3 | 40 | if (!us_ticker_inited) us_ticker_init(); |
sahilmgandhi | 18:6a4db94011d3 | 41 | return TIM_MST->CNT; |
sahilmgandhi | 18:6a4db94011d3 | 42 | } |
sahilmgandhi | 18:6a4db94011d3 | 43 | |
sahilmgandhi | 18:6a4db94011d3 | 44 | void us_ticker_set_interrupt(timestamp_t timestamp) |
sahilmgandhi | 18:6a4db94011d3 | 45 | { |
sahilmgandhi | 18:6a4db94011d3 | 46 | TimMasterHandle.Instance = TIM_MST; |
sahilmgandhi | 18:6a4db94011d3 | 47 | // Set new output compare value |
sahilmgandhi | 18:6a4db94011d3 | 48 | __HAL_TIM_SET_COMPARE(&TimMasterHandle, TIM_CHANNEL_1, (uint32_t)timestamp); |
sahilmgandhi | 18:6a4db94011d3 | 49 | // Enable IT |
sahilmgandhi | 18:6a4db94011d3 | 50 | __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
sahilmgandhi | 18:6a4db94011d3 | 51 | } |
sahilmgandhi | 18:6a4db94011d3 | 52 | |
sahilmgandhi | 18:6a4db94011d3 | 53 | void us_ticker_disable_interrupt(void) |
sahilmgandhi | 18:6a4db94011d3 | 54 | { |
sahilmgandhi | 18:6a4db94011d3 | 55 | TimMasterHandle.Instance = TIM_MST; |
sahilmgandhi | 18:6a4db94011d3 | 56 | __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1); |
sahilmgandhi | 18:6a4db94011d3 | 57 | } |
sahilmgandhi | 18:6a4db94011d3 | 58 | |
sahilmgandhi | 18:6a4db94011d3 | 59 | void us_ticker_clear_interrupt(void) |
sahilmgandhi | 18:6a4db94011d3 | 60 | { |
sahilmgandhi | 18:6a4db94011d3 | 61 | TimMasterHandle.Instance = TIM_MST; |
sahilmgandhi | 18:6a4db94011d3 | 62 | __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1); |
sahilmgandhi | 18:6a4db94011d3 | 63 | } |
sahilmgandhi | 18:6a4db94011d3 | 64 | |
sahilmgandhi | 18:6a4db94011d3 | 65 | #endif // !TIM_MST_16BIT |