Andrew SaLoutos / mbed-dev-STM-lean

From Ben Katz mbed-dev library. Removed unnecessary target files to reduce the overall size by a factor of 10 to make it easier to import into the online IDE.

Dependents:   motor_driver motor_driver_screaming_fix

targets/TARGET_STM/us_ticker_32b.c@0:083111ae2a11, 2020-11-26 (annotated)

Committer:
saloutos
Date:
Thu Nov 26 04:08:56 2020 +0000
Revision:
0:083111ae2a11
first commit of leaned mbed dev lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
saloutos 0:083111ae2a11 1 /* mbed Microcontroller Library
saloutos 0:083111ae2a11 2 * Copyright (c) 2006-2016 ARM Limited
saloutos 0:083111ae2a11 3 *
saloutos 0:083111ae2a11 4 * Licensed under the Apache License, Version 2.0 (the "License");
saloutos 0:083111ae2a11 5 * you may not use this file except in compliance with the License.
saloutos 0:083111ae2a11 6 * You may obtain a copy of the License at
saloutos 0:083111ae2a11 7 *
saloutos 0:083111ae2a11 8 * http://www.apache.org/licenses/LICENSE-2.0
saloutos 0:083111ae2a11 9 *
saloutos 0:083111ae2a11 10 * Unless required by applicable law or agreed to in writing, software
saloutos 0:083111ae2a11 11 * distributed under the License is distributed on an "AS IS" BASIS,
saloutos 0:083111ae2a11 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
saloutos 0:083111ae2a11 13 * See the License for the specific language governing permissions and
saloutos 0:083111ae2a11 14 * limitations under the License.
saloutos 0:083111ae2a11 15 */
saloutos 0:083111ae2a11 16 #include <stddef.h>
saloutos 0:083111ae2a11 17 #include "us_ticker_api.h"
saloutos 0:083111ae2a11 18 #include "PeripheralNames.h"
saloutos 0:083111ae2a11 19 #include "hal_tick.h"
saloutos 0:083111ae2a11 20
saloutos 0:083111ae2a11 21 // A 32-bit timer is used
saloutos 0:083111ae2a11 22 #if !TIM_MST_16BIT
saloutos 0:083111ae2a11 23
saloutos 0:083111ae2a11 24 TIM_HandleTypeDef TimMasterHandle;
saloutos 0:083111ae2a11 25
saloutos 0:083111ae2a11 26 void us_ticker_init(void)
saloutos 0:083111ae2a11 27 {
saloutos 0:083111ae2a11 28 /* NOTE: assuming that HAL tick has already been initialized! */
saloutos 0:083111ae2a11 29 }
saloutos 0:083111ae2a11 30
saloutos 0:083111ae2a11 31 uint32_t us_ticker_read()
saloutos 0:083111ae2a11 32 {
saloutos 0:083111ae2a11 33 return TIM_MST->CNT;
saloutos 0:083111ae2a11 34 }
saloutos 0:083111ae2a11 35
saloutos 0:083111ae2a11 36 void us_ticker_set_interrupt(timestamp_t timestamp)
saloutos 0:083111ae2a11 37 {
saloutos 0:083111ae2a11 38 // NOTE: This function must be called with interrupts disabled to keep our
saloutos 0:083111ae2a11 39 // timer interrupt setup atomic
saloutos 0:083111ae2a11 40
saloutos 0:083111ae2a11 41 // disable IT while we are handling the correct timestamp
saloutos 0:083111ae2a11 42 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1);
saloutos 0:083111ae2a11 43 // Set new output compare value
saloutos 0:083111ae2a11 44 __HAL_TIM_SET_COMPARE(&TimMasterHandle, TIM_CHANNEL_1, (uint32_t)timestamp);
saloutos 0:083111ae2a11 45 // Enable IT
saloutos 0:083111ae2a11 46 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1);
saloutos 0:083111ae2a11 47 }
saloutos 0:083111ae2a11 48
saloutos 0:083111ae2a11 49 void us_ticker_fire_interrupt(void)
saloutos 0:083111ae2a11 50 {
saloutos 0:083111ae2a11 51 LL_TIM_GenerateEvent_CC1(TimMasterHandle.Instance);
saloutos 0:083111ae2a11 52 }
saloutos 0:083111ae2a11 53
saloutos 0:083111ae2a11 54 /* NOTE: must be called with interrupts disabled! */
saloutos 0:083111ae2a11 55 void us_ticker_disable_interrupt(void)
saloutos 0:083111ae2a11 56 {
saloutos 0:083111ae2a11 57 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC1);
saloutos 0:083111ae2a11 58 }
saloutos 0:083111ae2a11 59
saloutos 0:083111ae2a11 60 /* NOTE: must be called with interrupts disabled! */
saloutos 0:083111ae2a11 61 void us_ticker_clear_interrupt(void)
saloutos 0:083111ae2a11 62 {
saloutos 0:083111ae2a11 63 __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1);
saloutos 0:083111ae2a11 64 }
saloutos 0:083111ae2a11 65
saloutos 0:083111ae2a11 66 #endif // !TIM_MST_16BIT