diff options
Diffstat (limited to 'bsps/arm/stm32h7/hal/stm32h7xx_ll_lptim.c')
| -rw-r--r-- | bsps/arm/stm32h7/hal/stm32h7xx_ll_lptim.c | 355 |
1 files changed, 355 insertions, 0 deletions
diff --git a/bsps/arm/stm32h7/hal/stm32h7xx_ll_lptim.c b/bsps/arm/stm32h7/hal/stm32h7xx_ll_lptim.c new file mode 100644 index 0000000000..154d8828c7 --- /dev/null +++ b/bsps/arm/stm32h7/hal/stm32h7xx_ll_lptim.c @@ -0,0 +1,355 @@ +/**
+ ******************************************************************************
+ * @file stm32h7xx_ll_lptim.c
+ * @author MCD Application Team
+ * @brief LPTIM LL module driver.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+#if defined(USE_FULL_LL_DRIVER)
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32h7xx_ll_lptim.h"
+#include "stm32h7xx_ll_bus.h"
+#include "stm32h7xx_ll_rcc.h"
+
+
+#ifdef USE_FULL_ASSERT
+#include "stm32_assert.h"
+#else
+#define assert_param(expr) ((void)0U)
+#endif
+
+/** @addtogroup STM32H7xx_LL_Driver
+ * @{
+ */
+
+#if defined (LPTIM1) || defined (LPTIM2) || defined (LPTIM3) || defined (LPTIM4) || defined (LPTIM5)
+
+/** @addtogroup LPTIM_LL
+ * @{
+ */
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/** @addtogroup LPTIM_LL_Private_Macros
+ * @{
+ */
+#define IS_LL_LPTIM_CLOCK_SOURCE(__VALUE__) (((__VALUE__) == LL_LPTIM_CLK_SOURCE_INTERNAL) \
+ || ((__VALUE__) == LL_LPTIM_CLK_SOURCE_EXTERNAL))
+
+#define IS_LL_LPTIM_CLOCK_PRESCALER(__VALUE__) (((__VALUE__) == LL_LPTIM_PRESCALER_DIV1) \
+ || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV2) \
+ || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV4) \
+ || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV8) \
+ || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV16) \
+ || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV32) \
+ || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV64) \
+ || ((__VALUE__) == LL_LPTIM_PRESCALER_DIV128))
+
+#define IS_LL_LPTIM_WAVEFORM(__VALUE__) (((__VALUE__) == LL_LPTIM_OUTPUT_WAVEFORM_PWM) \
+ || ((__VALUE__) == LL_LPTIM_OUTPUT_WAVEFORM_SETONCE))
+
+#define IS_LL_LPTIM_OUTPUT_POLARITY(__VALUE__) (((__VALUE__) == LL_LPTIM_OUTPUT_POLARITY_REGULAR) \
+ || ((__VALUE__) == LL_LPTIM_OUTPUT_POLARITY_INVERSE))
+/**
+ * @}
+ */
+
+
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/** @defgroup LPTIM_Private_Functions LPTIM Private Functions
+ * @{
+ */
+/**
+ * @}
+ */
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup LPTIM_LL_Exported_Functions
+ * @{
+ */
+
+/** @addtogroup LPTIM_LL_EF_Init
+ * @{
+ */
+
+/**
+ * @brief Set LPTIMx registers to their reset values.
+ * @param LPTIMx LP Timer instance
+ * @retval An ErrorStatus enumeration value:
+ * - SUCCESS: LPTIMx registers are de-initialized
+ * - ERROR: invalid LPTIMx instance
+ */
+ErrorStatus LL_LPTIM_DeInit(LPTIM_TypeDef *LPTIMx)
+{
+ ErrorStatus result = SUCCESS;
+
+ /* Check the parameters */
+ assert_param(IS_LPTIM_INSTANCE(LPTIMx));
+
+ if (LPTIMx == LPTIM1)
+ {
+ LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_LPTIM1);
+ LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_LPTIM1);
+ }
+ else if (LPTIMx == LPTIM2)
+ {
+ LL_APB4_GRP1_ForceReset(LL_APB4_GRP1_PERIPH_LPTIM2);
+ LL_APB4_GRP1_ReleaseReset(LL_APB4_GRP1_PERIPH_LPTIM2);
+ }
+#if defined(LPTIM3)
+ else if (LPTIMx == LPTIM3)
+ {
+ LL_APB4_GRP1_ForceReset(LL_APB4_GRP1_PERIPH_LPTIM3);
+ LL_APB4_GRP1_ReleaseReset(LL_APB4_GRP1_PERIPH_LPTIM3);
+ }
+#endif /* LPTIM3 */
+#if defined(LPTIM4)
+ else if (LPTIMx == LPTIM4)
+ {
+ LL_APB4_GRP1_ForceReset(LL_APB4_GRP1_PERIPH_LPTIM4);
+ LL_APB4_GRP1_ReleaseReset(LL_APB4_GRP1_PERIPH_LPTIM4);
+ }
+#endif /* LPTIM4 */
+#if defined(LPTIM5)
+ else if (LPTIMx == LPTIM5)
+ {
+ LL_APB4_GRP1_ForceReset(LL_APB4_GRP1_PERIPH_LPTIM5);
+ LL_APB4_GRP1_ReleaseReset(LL_APB4_GRP1_PERIPH_LPTIM5);
+ }
+#endif /* LPTIM5 */
+ else
+ {
+ result = ERROR;
+ }
+
+ return result;
+}
+
+/**
+ * @brief Set each fields of the LPTIM_InitStruct structure to its default
+ * value.
+ * @param LPTIM_InitStruct pointer to a @ref LL_LPTIM_InitTypeDef structure
+ * @retval None
+ */
+void LL_LPTIM_StructInit(LL_LPTIM_InitTypeDef *LPTIM_InitStruct)
+{
+ /* Set the default configuration */
+ LPTIM_InitStruct->ClockSource = LL_LPTIM_CLK_SOURCE_INTERNAL;
+ LPTIM_InitStruct->Prescaler = LL_LPTIM_PRESCALER_DIV1;
+ LPTIM_InitStruct->Waveform = LL_LPTIM_OUTPUT_WAVEFORM_PWM;
+ LPTIM_InitStruct->Polarity = LL_LPTIM_OUTPUT_POLARITY_REGULAR;
+}
+
+/**
+ * @brief Configure the LPTIMx peripheral according to the specified parameters.
+ * @note LL_LPTIM_Init can only be called when the LPTIM instance is disabled.
+ * @note LPTIMx can be disabled using unitary function @ref LL_LPTIM_Disable().
+ * @param LPTIMx LP Timer Instance
+ * @param LPTIM_InitStruct pointer to a @ref LL_LPTIM_InitTypeDef structure
+ * @retval An ErrorStatus enumeration value:
+ * - SUCCESS: LPTIMx instance has been initialized
+ * - ERROR: LPTIMx instance hasn't been initialized
+ */
+ErrorStatus LL_LPTIM_Init(LPTIM_TypeDef *LPTIMx, LL_LPTIM_InitTypeDef *LPTIM_InitStruct)
+{
+ ErrorStatus result = SUCCESS;
+ /* Check the parameters */
+ assert_param(IS_LPTIM_INSTANCE(LPTIMx));
+ assert_param(IS_LL_LPTIM_CLOCK_SOURCE(LPTIM_InitStruct->ClockSource));
+ assert_param(IS_LL_LPTIM_CLOCK_PRESCALER(LPTIM_InitStruct->Prescaler));
+ assert_param(IS_LL_LPTIM_WAVEFORM(LPTIM_InitStruct->Waveform));
+ assert_param(IS_LL_LPTIM_OUTPUT_POLARITY(LPTIM_InitStruct->Polarity));
+
+ /* The LPTIMx_CFGR register must only be modified when the LPTIM is disabled
+ (ENABLE bit is reset to 0).
+ */
+ if (LL_LPTIM_IsEnabled(LPTIMx) == 1UL)
+ {
+ result = ERROR;
+ }
+ else
+ {
+ /* Set CKSEL bitfield according to ClockSource value */
+ /* Set PRESC bitfield according to Prescaler value */
+ /* Set WAVE bitfield according to Waveform value */
+ /* Set WAVEPOL bitfield according to Polarity value */
+ MODIFY_REG(LPTIMx->CFGR,
+ (LPTIM_CFGR_CKSEL | LPTIM_CFGR_PRESC | LPTIM_CFGR_WAVE | LPTIM_CFGR_WAVPOL),
+ LPTIM_InitStruct->ClockSource | \
+ LPTIM_InitStruct->Prescaler | \
+ LPTIM_InitStruct->Waveform | \
+ LPTIM_InitStruct->Polarity);
+ }
+
+ return result;
+}
+
+/**
+ * @brief Disable the LPTIM instance
+ * @rmtoll CR ENABLE LL_LPTIM_Disable
+ * @param LPTIMx Low-Power Timer instance
+ * @note The following sequence is required to solve LPTIM disable HW limitation.
+ * Please check Errata Sheet ES0335 for more details under "MCU may remain
+ * stuck in LPTIM interrupt when entering Stop mode" section.
+ * @retval None
+ */
+void LL_LPTIM_Disable(LPTIM_TypeDef *LPTIMx)
+{
+ LL_RCC_ClocksTypeDef rcc_clock;
+ uint32_t tmpclksource = 0;
+ uint32_t tmpIER;
+ uint32_t tmpCFGR;
+ uint32_t tmpCMP;
+ uint32_t tmpARR;
+ uint32_t tmpCFGR2;
+
+ /* Check the parameters */
+ assert_param(IS_LPTIM_INSTANCE(LPTIMx));
+
+ __disable_irq();
+
+ /********** Save LPTIM Config *********/
+ /* Save LPTIM source clock */
+ switch ((uint32_t)LPTIMx)
+ {
+ case LPTIM1_BASE:
+ tmpclksource = LL_RCC_GetLPTIMClockSource(LL_RCC_LPTIM1_CLKSOURCE);
+ break;
+ case LPTIM2_BASE:
+ tmpclksource = LL_RCC_GetLPTIMClockSource(LL_RCC_LPTIM2_CLKSOURCE);
+ break;
+#if defined(LPTIM3)&&defined(LPTIM4)&&defined(LPTIM5)
+ case LPTIM3_BASE:
+ case LPTIM4_BASE:
+ case LPTIM5_BASE:
+ tmpclksource = LL_RCC_GetLPTIMClockSource(LL_RCC_LPTIM345_CLKSOURCE);
+ break;
+#elif defined(LPTIM3)
+ case LPTIM3_BASE:
+ tmpclksource = LL_RCC_GetLPTIMClockSource(LL_RCC_LPTIM3_CLKSOURCE);
+ break;
+#endif /* LPTIM3 && LPTIM4 && LPTIM5 */
+ default:
+ break;
+ }
+
+ /* Save LPTIM configuration registers */
+ tmpIER = LPTIMx->IER;
+ tmpCFGR = LPTIMx->CFGR;
+ tmpCMP = LPTIMx->CMP;
+ tmpARR = LPTIMx->ARR;
+ tmpCFGR2 = LPTIMx->CFGR2;
+
+ /************* Reset LPTIM ************/
+ (void)LL_LPTIM_DeInit(LPTIMx);
+
+ /********* Restore LPTIM Config *******/
+ LL_RCC_GetSystemClocksFreq(&rcc_clock);
+
+ if ((tmpCMP != 0UL) || (tmpARR != 0UL))
+ {
+ /* Force LPTIM source kernel clock from APB */
+ switch ((uint32_t)LPTIMx)
+ {
+ case LPTIM1_BASE:
+ LL_RCC_SetLPTIMClockSource(LL_RCC_LPTIM1_CLKSOURCE_PCLK1);
+ break;
+ case LPTIM2_BASE:
+ LL_RCC_SetLPTIMClockSource(LL_RCC_LPTIM2_CLKSOURCE_PCLK4);
+ break;
+#if defined(LPTIM3)&&defined(LPTIM4)&&defined(LPTIM5)
+ case LPTIM3_BASE:
+ case LPTIM4_BASE:
+ case LPTIM5_BASE:
+ LL_RCC_SetLPTIMClockSource(LL_RCC_LPTIM345_CLKSOURCE_PCLK4);
+ break;
+#elif defined(LPTIM3)
+ case LPTIM3_BASE:
+ LL_RCC_SetLPTIMClockSource(LL_RCC_LPTIM3_CLKSOURCE_PCLK4);
+ break;
+#endif /* LPTIM3 && LPTIM4 && LPTIM5*/
+ default:
+ break;
+ }
+
+ if (tmpCMP != 0UL)
+ {
+ /* Restore CMP and ARR registers (LPTIM should be enabled first) */
+ LPTIMx->CR |= LPTIM_CR_ENABLE;
+ LPTIMx->CMP = tmpCMP;
+
+ /* Polling on CMP write ok status after above restore operation */
+ do
+ {
+ rcc_clock.SYSCLK_Frequency--; /* Used for timeout */
+ }
+ while (((LL_LPTIM_IsActiveFlag_CMPOK(LPTIMx) != 1UL)) && ((rcc_clock.SYSCLK_Frequency) > 0UL));
+
+ LL_LPTIM_ClearFlag_CMPOK(LPTIMx);
+ }
+
+ if (tmpARR != 0UL)
+ {
+ LPTIMx->CR |= LPTIM_CR_ENABLE;
+ LPTIMx->ARR = tmpARR;
+
+ LL_RCC_GetSystemClocksFreq(&rcc_clock);
+ /* Polling on ARR write ok status after above restore operation */
+ do
+ {
+ rcc_clock.SYSCLK_Frequency--; /* Used for timeout */
+ }
+ while (((LL_LPTIM_IsActiveFlag_ARROK(LPTIMx) != 1UL)) && ((rcc_clock.SYSCLK_Frequency) > 0UL));
+
+ LL_LPTIM_ClearFlag_ARROK(LPTIMx);
+ }
+
+
+ /* Restore LPTIM source kernel clock */
+ LL_RCC_SetLPTIMClockSource(tmpclksource);
+ }
+
+ /* Restore configuration registers (LPTIM should be disabled first) */
+ LPTIMx->CR &= ~(LPTIM_CR_ENABLE);
+ LPTIMx->IER = tmpIER;
+ LPTIMx->CFGR = tmpCFGR;
+ LPTIMx->CFGR2 = tmpCFGR2;
+
+ __enable_irq();
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* LPTIM1 || LPTIM2 || LPTIM3 || LPTIM4 || LPTIM5 */
+
+/**
+ * @}
+ */
+
+#endif /* USE_FULL_LL_DRIVER */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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