diff options
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F1/TARGET_DISCO_F100RB/hal_tick.c')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F1/TARGET_DISCO_F100RB/hal_tick.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F1/TARGET_DISCO_F100RB/hal_tick.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F1/TARGET_DISCO_F100RB/hal_tick.c new file mode 100644 index 0000000000..9e42da7a4e --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F1/TARGET_DISCO_F100RB/hal_tick.c @@ -0,0 +1,145 @@ +/** + ****************************************************************************** + * @file hal_tick.c + * @author MCD Application Team + * @brief Initialization of HAL tick + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ +#include "hal_tick.h" + +TIM_HandleTypeDef TimMasterHandle; +uint32_t PreviousVal = 0; + +void us_ticker_irq_handler(void); +void set_compare(uint16_t count); + +extern volatile uint32_t SlaveCounter; +extern volatile uint32_t oc_int_part; +extern volatile uint16_t oc_rem_part; + +void timer_irq_handler(void) { + uint16_t cval = TIM_MST->CNT; + + TimMasterHandle.Instance = TIM_MST; + + // Clear Update interrupt flag + if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE) == SET) { + __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_UPDATE); + SlaveCounter++; + } + + // Channel 1 for mbed timeout + if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC1) == SET) { + __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC1); + if (oc_rem_part > 0) { + set_compare(oc_rem_part); // Finish the remaining time left + oc_rem_part = 0; + } else { + if (oc_int_part > 0) { + set_compare(0xFFFF); + oc_rem_part = cval; // To finish the counter loop the next time + oc_int_part--; + } else { + us_ticker_irq_handler(); + } + } + } + + // Channel 2 for HAL tick + if (__HAL_TIM_GET_FLAG(&TimMasterHandle, TIM_FLAG_CC2) == SET) { + __HAL_TIM_CLEAR_FLAG(&TimMasterHandle, TIM_FLAG_CC2); + uint32_t val = __HAL_TIM_GetCounter(&TimMasterHandle); + if ((val - PreviousVal) >= HAL_TICK_DELAY) { + // Increment HAL variable + HAL_IncTick(); + // Prepare next interrupt + __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, val + HAL_TICK_DELAY); + PreviousVal = val; + } + } +} + +// Reconfigure the HAL tick using a standard timer instead of systick. +HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority) { + // Enable timer clock + TIM_MST_RCC; + + // Reset timer + TIM_MST_RESET_ON; + TIM_MST_RESET_OFF; + + // Update the SystemCoreClock variable + SystemCoreClockUpdate(); + + // Configure time base + TimMasterHandle.Instance = TIM_MST; + TimMasterHandle.Init.Period = 0xFFFFFFFF; + TimMasterHandle.Init.Prescaler = (uint32_t)(SystemCoreClock / 1000000) - 1; // 1 us tick + TimMasterHandle.Init.ClockDivision = 0; + TimMasterHandle.Init.CounterMode = TIM_COUNTERMODE_UP; + HAL_TIM_Base_Init(&TimMasterHandle); + + // Configure output compare channel 1 for mbed timeout (enabled later when used) + HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_1); + + // Configure output compare channel 2 for HAL tick + HAL_TIM_OC_Start(&TimMasterHandle, TIM_CHANNEL_2); + PreviousVal = __HAL_TIM_GetCounter(&TimMasterHandle); + __HAL_TIM_SetCompare(&TimMasterHandle, TIM_CHANNEL_2, PreviousVal + HAL_TICK_DELAY); + + // Configure interrupts + // Update interrupt used for 32-bit counter + // Output compare channel 1 interrupt for mbed timeout + // Output compare channel 2 interrupt for HAL tick + NVIC_SetVector(TIM_MST_IRQ, (uint32_t)timer_irq_handler); + NVIC_EnableIRQ(TIM_MST_IRQ); + + // Enable interrupts + __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_UPDATE); // For 32-bit counter + __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2); // For HAL tick + + // Enable timer + HAL_TIM_Base_Start(&TimMasterHandle); + + return HAL_OK; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |