Skip to content

修复STM32的硬件定时器的时钟配置问题 #3846

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 6 commits into from
Aug 27, 2020
Merged

修复STM32的硬件定时器的时钟配置问题 #3846

Changes from all commits
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
f8e2105
Update drv_hwtimer.c
ynkan Aug 25, 2020
72f0220
Merge pull request #1 from ynkan/ynkan-rtt-2020
ynkan Aug 25, 2020
dbd389a
Update drv_hwtimer.c
ynkan Aug 26, 2020
5121b8d
Update drv_hwtimer.c
ynkan Aug 27, 2020
f60f452
Update drv_hwtimer.c
ynkan Aug 27, 2020
9eb2275
Update drv_hwtimer.c
ynkan Aug 27, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
48 changes: 37 additions & 11 deletions bsp/stm32/libraries/HAL_Drivers/drv_hwtimer.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
* Date Author Notes
* 2018-12-10 zylx first version
* 2020-06-16 thread-liu Porting for stm32mp1
* 2020-08-25 linyongkang Fix the timer clock frequency doubling problem
*/

#include <board.h>
Expand Down Expand Up @@ -152,9 +153,35 @@ static struct stm32_hwtimer stm32_hwtimer_obj[] =
#endif
};

/* APBx timer clocks frequency doubler state related to APB1CLKDivider value */
static void pclkx_doubler_get(uint32_t *pclk1_doubler, uint32_t *pclk2_doubler)
{
uint32_t flatency = 0;
RCC_ClkInitTypeDef RCC_ClkInitStruct;

RT_ASSERT(pclk1_doubler != RT_NULL);
RT_ASSERT(pclk1_doubler != RT_NULL);

HAL_RCC_GetClockConfig(&RCC_ClkInitStruct, &flatency);

*pclk1_doubler = 1;
*pclk2_doubler = 1;

if(RCC_ClkInitStruct.APB1CLKDivider != RCC_HCLK_DIV1)
{
*pclk1_doubler = 2;
}

if(RCC_ClkInitStruct.APB2CLKDivider != RCC_HCLK_DIV1)
{
*pclk2_doubler = 2;
}
}

static void timer_init(struct rt_hwtimer_device *timer, rt_uint32_t state)
{
uint32_t prescaler_value = 0;
uint32_t pclk1_doubler, pclk2_doubler;
TIM_HandleTypeDef *tim = RT_NULL;
struct stm32_hwtimer *tim_device = RT_NULL;

Expand All @@ -164,6 +191,8 @@ static void timer_init(struct rt_hwtimer_device *timer, rt_uint32_t state)
tim = (TIM_HandleTypeDef *)timer->parent.user_data;
tim_device = (struct stm32_hwtimer *)timer;

pclkx_doubler_get(&pclk1_doubler, &pclk2_doubler);

/* time init */
#if defined(SOC_SERIES_STM32F2) || defined(SOC_SERIES_STM32F4) || defined(SOC_SERIES_STM32F7)
if (tim->Instance == TIM9 || tim->Instance == TIM10 || tim->Instance == TIM11)
Expand All @@ -176,12 +205,12 @@ static void timer_init(struct rt_hwtimer_device *timer, rt_uint32_t state)
#endif
{
#if !defined(SOC_SERIES_STM32F0) && !defined(SOC_SERIES_STM32G0)
prescaler_value = (uint32_t)(HAL_RCC_GetPCLK2Freq() * 2 / 10000) - 1;
prescaler_value = (uint32_t)(HAL_RCC_GetPCLK2Freq() * pclk2_doubler / 10000) - 1;
#endif
}
else
{
prescaler_value = (uint32_t)(HAL_RCC_GetPCLK1Freq() * 2 / 10000) - 1;
prescaler_value = (uint32_t)(HAL_RCC_GetPCLK1Freq() * pclk1_doubler / 10000) - 1;
}
tim->Init.Period = 10000 - 1;
tim->Init.Prescaler = prescaler_value;
Expand Down Expand Up @@ -274,6 +303,7 @@ static rt_err_t timer_ctrl(rt_hwtimer_t *timer, rt_uint32_t cmd, void *arg)
{
TIM_HandleTypeDef *tim = RT_NULL;
rt_err_t result = RT_EOK;
uint32_t pclk1_doubler, pclk2_doubler;

RT_ASSERT(timer != RT_NULL);
RT_ASSERT(arg != RT_NULL);
Expand All @@ -290,6 +320,8 @@ static rt_err_t timer_ctrl(rt_hwtimer_t *timer, rt_uint32_t cmd, void *arg)
/* set timer frequence */
freq = *((rt_uint32_t *)arg);

pclkx_doubler_get(&pclk1_doubler, &pclk2_doubler);

#if defined(SOC_SERIES_STM32F2) || defined(SOC_SERIES_STM32F4) || defined(SOC_SERIES_STM32F7)
if (tim->Instance == TIM9 || tim->Instance == TIM10 || tim->Instance == TIM11)
#elif defined(SOC_SERIES_STM32L4)
Expand All @@ -300,19 +332,13 @@ static rt_err_t timer_ctrl(rt_hwtimer_t *timer, rt_uint32_t cmd, void *arg)
if (0)
#endif
{
#if defined(SOC_SERIES_STM32L4)
val = HAL_RCC_GetPCLK2Freq() / freq;
#elif defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32F2) || defined(SOC_SERIES_STM32F4) || defined(SOC_SERIES_STM32F7) || defined(SOC_SERIES_STM32MP1)
val = HAL_RCC_GetPCLK2Freq() * 2 / freq;
#if !defined(SOC_SERIES_STM32F0) && !defined(SOC_SERIES_STM32G0)
val = HAL_RCC_GetPCLK2Freq() * pclk2_doubler / freq;
#endif
}
else
{
#if defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32F2) || defined(SOC_SERIES_STM32F4) || defined(SOC_SERIES_STM32F7) || defined(SOC_SERIES_STM32MP1)
val = HAL_RCC_GetPCLK1Freq() * 2 / freq;
#elif defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32G0)
val = HAL_RCC_GetPCLK1Freq() / freq;
#endif
val = HAL_RCC_GetPCLK1Freq() * pclk1_doubler / freq;
}
__HAL_TIM_SET_PRESCALER(tim, val - 1);

Expand Down