Knight KE / Mbed OS Game_Master

游戏王对战板，目前code还是空的

mbed-os/targets/TARGET_STM/us_ticker.c@0:9b3d4731edbb, 2018-06-21 (annotated)

Committer:
WFKnight
Date:
Thu Jun 21 13:51:43 2018 +0000
Revision:
0:9b3d4731edbb
UART, RTOS, LED

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WFKnight 0:9b3d4731edbb 1 /* mbed Microcontroller Library
WFKnight 0:9b3d4731edbb 2 * Copyright (c) 2006-2016 ARM Limited
WFKnight 0:9b3d4731edbb 3 *
WFKnight 0:9b3d4731edbb 4 * Licensed under the Apache License, Version 2.0 (the "License");
WFKnight 0:9b3d4731edbb 5 * you may not use this file except in compliance with the License.
WFKnight 0:9b3d4731edbb 6 * You may obtain a copy of the License at
WFKnight 0:9b3d4731edbb 7 *
WFKnight 0:9b3d4731edbb 8 * http://www.apache.org/licenses/LICENSE-2.0
WFKnight 0:9b3d4731edbb 9 *
WFKnight 0:9b3d4731edbb 10 * Unless required by applicable law or agreed to in writing, software
WFKnight 0:9b3d4731edbb 11 * distributed under the License is distributed on an "AS IS" BASIS,
WFKnight 0:9b3d4731edbb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
WFKnight 0:9b3d4731edbb 13 * See the License for the specific language governing permissions and
WFKnight 0:9b3d4731edbb 14 * limitations under the License.
WFKnight 0:9b3d4731edbb 15 */
WFKnight 0:9b3d4731edbb 16 #include <stddef.h>
WFKnight 0:9b3d4731edbb 17 #include "us_ticker_api.h"
WFKnight 0:9b3d4731edbb 18 #include "PeripheralNames.h"
WFKnight 0:9b3d4731edbb 19 #include "hal_tick.h"
WFKnight 0:9b3d4731edbb 20
WFKnight 0:9b3d4731edbb 21 #if TIM_MST_16BIT
WFKnight 0:9b3d4731edbb 22 #define TIMER_TICKER_BIT_WIDTH 16
WFKnight 0:9b3d4731edbb 23 #else
WFKnight 0:9b3d4731edbb 24 #define TIMER_TICKER_BIT_WIDTH 32
WFKnight 0:9b3d4731edbb 25 #endif
WFKnight 0:9b3d4731edbb 26
WFKnight 0:9b3d4731edbb 27 TIM_HandleTypeDef TimMasterHandle;
WFKnight 0:9b3d4731edbb 28
WFKnight 0:9b3d4731edbb 29 const ticker_info_t* us_ticker_get_info()
WFKnight 0:9b3d4731edbb 30 {
WFKnight 0:9b3d4731edbb 31 static const ticker_info_t info = {
WFKnight 0:9b3d4731edbb 32 1000000,
WFKnight 0:9b3d4731edbb 33 TIMER_TICKER_BIT_WIDTH
WFKnight 0:9b3d4731edbb 34 };
WFKnight 0:9b3d4731edbb 35 return &info;
WFKnight 0:9b3d4731edbb 36 }
WFKnight 0:9b3d4731edbb 37
WFKnight 0:9b3d4731edbb 38 void us_ticker_init(void)
WFKnight 0:9b3d4731edbb 39 {
WFKnight 0:9b3d4731edbb 40 /* NOTE: assuming that HAL tick has already been initialized! */
WFKnight 0:9b3d4731edbb 41 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1);
WFKnight 0:9b3d4731edbb 42 }
WFKnight 0:9b3d4731edbb 43
WFKnight 0:9b3d4731edbb 44 uint32_t us_ticker_read()
WFKnight 0:9b3d4731edbb 45 {
WFKnight 0:9b3d4731edbb 46 return TIM_MST->CNT;
WFKnight 0:9b3d4731edbb 47 }
WFKnight 0:9b3d4731edbb 48
WFKnight 0:9b3d4731edbb 49 void us_ticker_set_interrupt(timestamp_t timestamp)
WFKnight 0:9b3d4731edbb 50 {
WFKnight 0:9b3d4731edbb 51 // NOTE: This function must be called with interrupts disabled to keep our
WFKnight 0:9b3d4731edbb 52 // timer interrupt setup atomic
WFKnight 0:9b3d4731edbb 53 // Set new output compare value
WFKnight 0:9b3d4731edbb 54 __HAL_TIM_SET_COMPARE(&TimMasterHandle, TIM_CHANNEL_1, (uint32_t)timestamp);
WFKnight 0:9b3d4731edbb 55 // Ensure the compare event starts clear
WFKnight 0:9b3d4731edbb 56 __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1);
WFKnight 0:9b3d4731edbb 57 // Enable IT
WFKnight 0:9b3d4731edbb 58 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1);
WFKnight 0:9b3d4731edbb 59 }
WFKnight 0:9b3d4731edbb 60
WFKnight 0:9b3d4731edbb 61 void us_ticker_fire_interrupt(void)
WFKnight 0:9b3d4731edbb 62 {
WFKnight 0:9b3d4731edbb 63 __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1);
WFKnight 0:9b3d4731edbb 64 LL_TIM_GenerateEvent_CC1(TimMasterHandle.Instance);
WFKnight 0:9b3d4731edbb 65 // Enable IT
WFKnight 0:9b3d4731edbb 66 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1);
WFKnight 0:9b3d4731edbb 67 }
WFKnight 0:9b3d4731edbb 68
WFKnight 0:9b3d4731edbb 69 /* NOTE: must be called with interrupts disabled! */
WFKnight 0:9b3d4731edbb 70 void us_ticker_disable_interrupt(void)
WFKnight 0:9b3d4731edbb 71 {
WFKnight 0:9b3d4731edbb 72 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1);
WFKnight 0:9b3d4731edbb 73 }
WFKnight 0:9b3d4731edbb 74
WFKnight 0:9b3d4731edbb 75 /* NOTE: must be called with interrupts disabled! */
WFKnight 0:9b3d4731edbb 76 void us_ticker_clear_interrupt(void)
WFKnight 0:9b3d4731edbb 77 {
WFKnight 0:9b3d4731edbb 78 __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1);
WFKnight 0:9b3d4731edbb 79 }
WFKnight 0:9b3d4731edbb 80