remove os_systick.c

os_systick.c

@@ -1,115 +0,0 @@
-/**************************************************************************//**
- * @file     os_systick.c
- * @brief    CMSIS OS Tick SysTick implementation
- * @version  V1.0.1
- * @date     29. November 2017
- ******************************************************************************/
-/*
- * Copyright (c) 2017-2017 Arm Limited. All rights reserved.
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * 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
- *
- * 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 <rtthread.h>
-#include "os_tick.h"
-#include "board.h"
-
-#ifdef  SysTick
-
-#ifndef SYSTICK_IRQ_PRIORITY
-#define SYSTICK_IRQ_PRIORITY    0xFFU
-#endif
-
-static uint8_t PendST;
-
-// Setup OS Tick.
-RT_WEAK int32_t OS_Tick_Setup (uint32_t freq, IRQHandler_t handler) {
-  uint32_t load;
-  (void)handler;
-
-  if (freq == 0U) {
-    return (-1);
-  }
-
-  load = (SystemCoreClock / freq) - 1U;
-  if (load > 0x00FFFFFFU) {
-    return (-1);
-  }
-
-  NVIC_SetPriority(SysTick_IRQn, SYSTICK_IRQ_PRIORITY);
-
-  SysTick->CTRL =  SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_TICKINT_Msk;
-  SysTick->LOAD =  load;
-  SysTick->VAL  =  0U;
-
-  PendST = 0U;
-
-  return (0);
-}
-
-/// Enable OS Tick.
-RT_WEAK void OS_Tick_Enable (void) {
-
-  if (PendST != 0U) {
-    PendST = 0U;
-    SCB->ICSR = SCB_ICSR_PENDSTSET_Msk;
-  }
-
-  SysTick->CTRL |=  SysTick_CTRL_ENABLE_Msk;
-}
-
-/// Disable OS Tick.
-RT_WEAK void OS_Tick_Disable (void) {
-
-  SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
-
-  if ((SCB->ICSR & SCB_ICSR_PENDSTSET_Msk) != 0U) {
-    SCB->ICSR = SCB_ICSR_PENDSTCLR_Msk;
-    PendST = 1U;
-  }
-}
-
-// Acknowledge OS Tick IRQ.
-RT_WEAK void OS_Tick_AcknowledgeIRQ (void) {
-  (void)SysTick->CTRL;
-}
-
-// Get OS Tick IRQ number.
-RT_WEAK int32_t  OS_Tick_GetIRQn (void) {
-  return ((int32_t)SysTick_IRQn);
-}
-
-// Get OS Tick clock.
-RT_WEAK uint32_t OS_Tick_GetClock (void) {
-  return (SystemCoreClock);
-}
-
-// Get OS Tick interval.
-RT_WEAK uint32_t OS_Tick_GetInterval (void) {
-  return (SysTick->LOAD + 1U);
-}
-
-// Get OS Tick count value.
-RT_WEAK uint32_t OS_Tick_GetCount (void) {
-  uint32_t load = SysTick->LOAD;
-  return  (load - SysTick->VAL);
-}
-
-// Get OS Tick overflow status.
-RT_WEAK uint32_t OS_Tick_GetOverflow (void) {
-  return ((SysTick->CTRL >> 16) & 1U);
-}
-
-#endif  // SysTick