| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 |
| * |
| * http://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 <inttypes.h> |
| #include <assert.h> |
| |
| #include "os/mynewt.h" |
| #include "stm32f3xx_hal_rcc.h" |
| |
| static uint32_t |
| stm32_hal_timer_get_freq_ahb1(RCC_ClkInitTypeDef *clk) { |
| uint32_t freq = HAL_RCC_GetPCLK1Freq(); |
| |
| if (clk->APB1CLKDivider != RCC_HCLK_DIV1) { |
| return 2 * freq; |
| } |
| |
| return freq; |
| } |
| |
| static uint32_t |
| stm32_hal_timer_get_freq_ahb2(RCC_ClkInitTypeDef *clk, bool pll2source) |
| { |
| uint32_t freq = HAL_RCC_GetPCLK2Freq(); |
| |
| if (pll2source && RCC_HCLK_DIV1 == clk->APB2CLKDivider && RCC_SYSCLK_DIV1 == clk->AHBCLKDivider) { |
| return 2 * freq; |
| } |
| |
| if (clk->APB2CLKDivider != RCC_HCLK_DIV1) { |
| return 2 * freq; |
| } |
| |
| return freq; |
| } |
| |
| uint32_t |
| stm32_hal_timer_get_freq(void *timx) |
| { |
| uintptr_t regs = (uintptr_t)timx; |
| RCC_ClkInitTypeDef clk; |
| uint32_t flashLatency; |
| |
| HAL_RCC_GetClockConfig(&clk, &flashLatency); |
| |
| switch (regs) { |
| #ifdef TIM1 |
| case (uintptr_t)TIM1: |
| return stm32_hal_timer_get_freq_ahb2(&clk, __HAL_RCC_GET_TIM1_SOURCE()); |
| #endif |
| #ifdef TIM8 |
| case (uintptr_t)TIM8: |
| return stm32_hal_timer_get_freq_ahb2(&clk, __HAL_RCC_GET_TIM8_SOURCE()); |
| #endif |
| #ifdef TIM9 |
| case (uintptr_t)TIM9: |
| return stm32_hal_timer_get_freq_ahb2(&clk, __HAL_RCC_GET_TIM9_SOURCE()); |
| #endif |
| #ifdef TIM10 |
| case (uintptr_t)TIM10: |
| return stm32_hal_timer_get_freq_ahb2(&clk, __HAL_RCC_GET_TIM10_SOURCE()); |
| #endif |
| #ifdef TIM11 |
| case (uintptr_t)TIM11: |
| return stm32_hal_timer_get_freq_ahb2(&clk, __HAL_RCC_GET_TIM11_SOURCE()); |
| #endif |
| #ifdef TIM15 |
| case (uintptr_t)TIM15: |
| # ifdef __HAL_RCC_GET_TIM15_SOURCE |
| return stm32_hal_timer_get_freq_ahb2(&clk, __HAL_RCC_GET_TIM15_SOURCE()); |
| # else |
| return stm32_hal_timer_get_freq_ahb2(&clk, false); |
| # endif |
| #endif |
| #ifdef TIM16 |
| case (uintptr_t)TIM16: |
| # ifdef __HAL_RCC_GET_TIM16_SOURCE |
| return stm32_hal_timer_get_freq_ahb2(&clk, __HAL_RCC_GET_TIM16_SOURCE()); |
| # else |
| return stm32_hal_timer_get_freq_ahb2(&clk, false); |
| # endif |
| #endif |
| #ifdef TIM17 |
| case (uintptr_t)TIM17: |
| # ifdef __HAL_RCC_GET_TIM17_SOURCE |
| return stm32_hal_timer_get_freq_ahb2(&clk, __HAL_RCC_GET_TIM17_SOURCE()); |
| # else |
| return stm32_hal_timer_get_freq_ahb2(&clk, false); |
| # endif |
| #endif |
| #ifdef TIM20 |
| case (uintptr_t)TIM20: |
| # ifdef __HAL_RCC_GET_TIM20_SOURCE |
| return stm32_hal_timer_get_freq_ahb2(&clk, __HAL_RCC_GET_TIM20_SOURCE()); |
| # else |
| return stm32_hal_timer_get_freq_ahb2(&clk, false); |
| # endif |
| #endif |
| /* AHB1 timers ... */ |
| #ifdef TIM2 |
| case (uintptr_t)TIM2: |
| #endif |
| #ifdef TIM3 |
| case (uintptr_t)TIM3: |
| #endif |
| #ifdef TIM4 |
| case (uintptr_t)TIM4: |
| #endif |
| #ifdef TIM5 |
| case (uintptr_t)TIM5: |
| #endif |
| #ifdef TIM6 |
| case (uintptr_t)TIM6: |
| #endif |
| #ifdef TIM7 |
| case (uintptr_t)TIM7: |
| #endif |
| |
| #ifdef TIM12 |
| case (uintptr_t)TIM12: |
| #endif |
| #ifdef TIM13 |
| case (uintptr_t)TIM13: |
| #endif |
| #ifdef TIM14 |
| case (uintptr_t)TIM14: |
| #endif |
| return stm32_hal_timer_get_freq_ahb1(&clk); |
| } |
| |
| assert(0); |
| return 0; |
| } |
| |