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/hal_tick_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 "hal_tick.h"
saloutos 0:083111ae2a11 17
saloutos 0:083111ae2a11 18 // A 32-bit timer is used
saloutos 0:083111ae2a11 19 #if !TIM_MST_16BIT
saloutos 0:083111ae2a11 20
saloutos 0:083111ae2a11 21 #define DEBUG_TICK 0 // Set to 1 to toggle a pin (see below which pin) at each tick
saloutos 0:083111ae2a11 22
saloutos 0:083111ae2a11 23 extern TIM_HandleTypeDef TimMasterHandle;
saloutos 0:083111ae2a11 24
saloutos 0:083111ae2a11 25 extern void HAL_IncTick(void);
saloutos 0:083111ae2a11 26
saloutos 0:083111ae2a11 27 volatile uint32_t PreviousVal = 0;
saloutos 0:083111ae2a11 28
saloutos 0:083111ae2a11 29 void us_ticker_irq_handler(void);
saloutos 0:083111ae2a11 30
saloutos 0:083111ae2a11 31 void timer_irq_handler(void)
saloutos 0:083111ae2a11 32 {
saloutos 0:083111ae2a11 33 // Channel 1 for mbed timeout
saloutos 0:083111ae2a11 34 if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) {
saloutos 0:083111ae2a11 35 if (__HAL_TIM_GET_IT_SOURCE(&TimMasterHandle, TIM_IT_CC1) == SET) {
saloutos 0:083111ae2a11 36 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC1);
saloutos 0:083111ae2a11 37 us_ticker_irq_handler();
saloutos 0:083111ae2a11 38 }
saloutos 0:083111ae2a11 39 }
saloutos 0:083111ae2a11 40
saloutos 0:083111ae2a11 41 // Channel 2 for HAL tick
saloutos 0:083111ae2a11 42 if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC2) == SET) {
saloutos 0:083111ae2a11 43 if (__HAL_TIM_GET_IT_SOURCE(&TimMasterHandle, TIM_IT_CC2) == SET) {
saloutos 0:083111ae2a11 44 __HAL_TIM_CLEAR_IT(&TimMasterHandle, TIM_IT_CC2);
saloutos 0:083111ae2a11 45 uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle);
saloutos 0:083111ae2a11 46 if ((val - PreviousVal) >= HAL_TICK_DELAY) {
saloutos 0:083111ae2a11 47 // Increment HAL variable
saloutos 0:083111ae2a11 48 HAL_IncTick();
saloutos 0:083111ae2a11 49 // Prepare next interrupt
saloutos 0:083111ae2a11 50 __HAL_TIM_SET_COMPARE(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY);
saloutos 0:083111ae2a11 51 PreviousVal = val;
saloutos 0:083111ae2a11 52 #if DEBUG_TICK > 0
saloutos 0:083111ae2a11 53 HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6);
saloutos 0:083111ae2a11 54 #endif
saloutos 0:083111ae2a11 55 }
saloutos 0:083111ae2a11 56 }
saloutos 0:083111ae2a11 57 }
saloutos 0:083111ae2a11 58 }
saloutos 0:083111ae2a11 59
saloutos 0:083111ae2a11 60 // Reconfigure the HAL tick using a standard timer instead of systick.
saloutos 0:083111ae2a11 61 HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
saloutos 0:083111ae2a11 62 {
saloutos 0:083111ae2a11 63 RCC_ClkInitTypeDef RCC_ClkInitStruct;
saloutos 0:083111ae2a11 64 uint32_t PclkFreq;
saloutos 0:083111ae2a11 65
saloutos 0:083111ae2a11 66 // Get clock configuration
saloutos 0:083111ae2a11 67 // Note: PclkFreq contains here the Latency (not used after)
saloutos 0:083111ae2a11 68 HAL_RCC_GetClockConfig(&RCC_ClkInitStruct, &PclkFreq);
saloutos 0:083111ae2a11 69
saloutos 0:083111ae2a11 70 // Get timer clock value
saloutos 0:083111ae2a11 71 #if TIM_MST_PCLK == 1
saloutos 0:083111ae2a11 72 PclkFreq = HAL_RCC_GetPCLK1Freq();
saloutos 0:083111ae2a11 73 #else
saloutos 0:083111ae2a11 74 PclkFreq = HAL_RCC_GetPCLK2Freq();
saloutos 0:083111ae2a11 75 #endif
saloutos 0:083111ae2a11 76
saloutos 0:083111ae2a11 77 // Enable timer clock
saloutos 0:083111ae2a11 78 TIM_MST_RCC;
saloutos 0:083111ae2a11 79
saloutos 0:083111ae2a11 80 // Reset timer
saloutos 0:083111ae2a11 81 TIM_MST_RESET_ON;
saloutos 0:083111ae2a11 82 TIM_MST_RESET_OFF;
saloutos 0:083111ae2a11 83
saloutos 0:083111ae2a11 84 // Configure time base
saloutos 0:083111ae2a11 85 TimMasterHandle.Instance = TIM_MST;
saloutos 0:083111ae2a11 86 TimMasterHandle.Init.Period = 0xFFFFFFFF;
saloutos 0:083111ae2a11 87
saloutos 0:083111ae2a11 88 // TIMxCLK = PCLKx when the APB prescaler = 1 else TIMxCLK = 2 * PCLKx
saloutos 0:083111ae2a11 89 #if TIM_MST_PCLK == 1
saloutos 0:083111ae2a11 90 if (RCC_ClkInitStruct.APB1CLKDivider == RCC_HCLK_DIV1) {
saloutos 0:083111ae2a11 91 #else
saloutos 0:083111ae2a11 92 if (RCC_ClkInitStruct.APB2CLKDivider == RCC_HCLK_DIV1) {
saloutos 0:083111ae2a11 93 #endif
saloutos 0:083111ae2a11 94 TimMasterHandle.Init.Prescaler = (uint16_t)((PclkFreq) / 1000000) - 1; // 1 us tick
saloutos 0:083111ae2a11 95 } else {
saloutos 0:083111ae2a11 96 TimMasterHandle.Init.Prescaler = (uint16_t)((PclkFreq * 2) / 1000000) - 1; // 1 us tick
saloutos 0:083111ae2a11 97 }
saloutos 0:083111ae2a11 98
saloutos 0:083111ae2a11 99 TimMasterHandle.Init.ClockDivision = 0;
saloutos 0:083111ae2a11 100 TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
saloutos 0:083111ae2a11 101 #if !TARGET_STM32L1
saloutos 0:083111ae2a11 102 TimMasterHandle.Init.RepetitionCounter = 0;
saloutos 0:083111ae2a11 103 #endif
saloutos 0:083111ae2a11 104 #ifdef TIM_AUTORELOAD_PRELOAD_DISABLE
saloutos 0:083111ae2a11 105 TimMasterHandle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
saloutos 0:083111ae2a11 106 #endif
saloutos 0:083111ae2a11 107 HAL_TIM_OC_Init(&TimMasterHandle);
saloutos 0:083111ae2a11 108
saloutos 0:083111ae2a11 109 NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler);
saloutos 0:083111ae2a11 110 NVIC_EnableIRQ(TIM_MST_IRQ);
saloutos 0:083111ae2a11 111
saloutos 0:083111ae2a11 112 // Channel 1 for mbed timeout
saloutos 0:083111ae2a11 113 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1);
saloutos 0:083111ae2a11 114
saloutos 0:083111ae2a11 115 // Channel 2 for HAL tick
saloutos 0:083111ae2a11 116 HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2);
saloutos 0:083111ae2a11 117 PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle);
saloutos 0:083111ae2a11 118 __HAL_TIM_SET_COMPARE(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY);
saloutos 0:083111ae2a11 119 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
saloutos 0:083111ae2a11 120
saloutos 0:083111ae2a11 121 // Freeze timer on stop/breakpoint
saloutos 0:083111ae2a11 122 // Define the FREEZE_TIMER_ON_DEBUG macro in mbed_app.json for example
saloutos 0:083111ae2a11 123 #if !defined(NDEBUG) && defined(FREEZE_TIMER_ON_DEBUG) && defined(TIM_MST_DBGMCU_FREEZE)
saloutos 0:083111ae2a11 124 TIM_MST_DBGMCU_FREEZE;
saloutos 0:083111ae2a11 125 #endif
saloutos 0:083111ae2a11 126
saloutos 0:083111ae2a11 127 #if DEBUG_TICK > 0
saloutos 0:083111ae2a11 128 __HAL_RCC_GPIOB_CLK_ENABLE();
saloutos 0:083111ae2a11 129 GPIO_InitTypeDef GPIO_InitStruct;
saloutos 0:083111ae2a11 130 GPIO_InitStruct.Pin = GPIO_PIN_6;
saloutos 0:083111ae2a11 131 GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
saloutos 0:083111ae2a11 132 GPIO_InitStruct.Pull = GPIO_PULLUP;
saloutos 0:083111ae2a11 133 GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
saloutos 0:083111ae2a11 134 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
saloutos 0:083111ae2a11 135 #endif
saloutos 0:083111ae2a11 136
saloutos 0:083111ae2a11 137 return HAL_OK;
saloutos 0:083111ae2a11 138 }
saloutos 0:083111ae2a11 139
saloutos 0:083111ae2a11 140 /* NOTE: must be called with interrupts disabled! */
saloutos 0:083111ae2a11 141 void HAL_SuspendTick(void)
saloutos 0:083111ae2a11 142 {
saloutos 0:083111ae2a11 143 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC2);
saloutos 0:083111ae2a11 144 }
saloutos 0:083111ae2a11 145
saloutos 0:083111ae2a11 146 /* NOTE: must be called with interrupts disabled! */
saloutos 0:083111ae2a11 147 void HAL_ResumeTick(void)
saloutos 0:083111ae2a11 148 {
saloutos 0:083111ae2a11 149 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
saloutos 0:083111ae2a11 150 }
saloutos 0:083111ae2a11 151
saloutos 0:083111ae2a11 152 #endif // !TIM_MST_16BIT