累计时间 * @brief 获取CPU占用率 * @param 无 * @retval CPU占用率，0~100% */

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\brief Disable External Interrupt The function disables a device-specific interrupt in the NVIC interrupt controller. \param [in] IRQn

\brief Enable External Interrupt The function enables a device-specific interrupt in the NVIC interrupt controller. \param [in] IRQn

\brief Set Interrupt Priority The function sets the priority of an interrupt. \note The priority cannot be set for every core interrupt.

\brief Set Interrupt Priority The function sets the priority of an interrupt. \note The priority cannot be set for every core interrupt.

\brief Set Interrupt Priority The function sets the priority of an interrupt. \note The priority cannot be set for every core interrupt.

\brief Set Interrupt Priority The function sets the priority of an interrupt. \note The priority cannot be set for every core interrupt.

\brief Set Interrupt Priority The function sets the priority of an interrupt. \note The priority cannot be set for every core interrupt.

\brief Set Interrupt Priority The function sets the priority of an interrupt. \note The priority cannot be set for every core interrupt.

\brief Set Priority Grouping The function sets the priority grouping field using the required unlock sequence. The parameter PriorityGroup is as

* @brief Enters STOP mode. * * @note In Stop mode, all I/O pins keep the same state as in Run mode. * @note When exiting Stop mode by is

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* @brief Enables or disables the AHB2 peripheral clock. * @note After reset, the peripheral clock (used for registers read/write access) *

* @brief Configures the External Low Speed oscillator (LSE). * @note As the LSE is in the Backup domain and write access is denied to *

* @brief Enables or disables the MCO1. * @param NewState: new state of the MCO1. * This parameter can be: ENABLE or DISABLE. * @retva

* @brief Enables or disables the MCO2. * @param NewState: new state of the MCO2. * This parameter can be: ENABLE or DISABLE. * @retva

* @brief Enables or disables the RTC clock. * @note This function must be used only after the RTC clock source was selected * using the

* @brief Configures the RTC clock (RTCCLK). * @note As the RTC clock configuration bits are in the Backup domain and write * access is

* @brief Enables or disables the RNG peripheral. * @param NewState: new state of the RNG peripheral. * This parameter can be: ENABLE or

* @brief Checks whether the specified RNG flag is set or not. * @param RNG_FLAG: specifies the RNG flag to check. * This parameter can

* @brief Returns a 32-bit random number. * * @note Before to call this function you have to wait till DRDY (data ready) * flag is

* @brief Initializes the RTC registers according to the specified parameters * in RTC_InitStruct. * @param RTC_InitStruct: pointer to a

* @brief Set the specified RTC Alarm. * @note The Alarm register can only be written when the corresponding Alarm * is disabled (Use th

* @brief Configures the RTC Wakeup counter. * @note The RTC WakeUp counter can only be written when the RTC WakeUp * is disabled (Use t

* @brief Configures the RTC Wakeup clock source. * @note The WakeUp Clock source can only be changed when the RTC WakeUp * is disabled

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* @brief Enables or disables the SPIx/I2Sx DMA interface. * @param SPIx: To select the SPIx/I2Sx peripheral, where x can be: 1, 2, 3, 4, 5 or 6

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* @brief Selects the GPIO pin used as EXTI Line. * @param EXTI_PortSourceGPIOx : selects the GPIO port to be used as source for * EXTI

* @brief Configures the System clock source, PLL Multiplier and Divider factors, * AHB/APBx prescalers and Flash settings * @Note This

* @brief Configures the System clock source, PLL Multiplier and Divider factors, * AHB/APBx prescalers and Flash settings * @Note This

* @brief Configures the System clock source, PLL Multiplier and Divider factors, * AHB/APBx prescalers and Flash settings * @Note This

\brief System Tick Configuration The function initializes the System Timer and its interrupt, and starts the System Tick Timer. Counter is i

* @brief Update SystemCoreClock variable according to Clock Register Values. * The SystemCoreClock variable contains the core clock (HCLK),

* @brief Setup the external memory controller. * Called in startup_stm32f4xx.s before jump to main. * This function configures th

* @brief Setup the external memory controller. * Called in startup_stm32f4xx.s before jump to main. * This function configures th

* @brief Configure the TI3 as Input. * @param TIMx: where x can be 1, 2, 3, 4, 5 or 8 to select the TIM peripheral. * @param TIM_ICPolarity : T

* @brief Configure the TI4 as Input. * @param TIMx: where x can be 1, 2, 3, 4, 5 or 8 to select the TIM peripheral. * @param TIM_ICPolarity : T

* @brief Clears the TIMx's pending flags. * @param TIMx: where x can be 1 to 14 to select the TIM peripheral. * @param TIM_FLAG: specifies the

* @brief Enables or disables the TIM peripheral Main Outputs. * @param TIMx: where x can be 1 or 8 to select the TIMx peripheral. * @param NewS

* @brief Deinitializes the TIMx peripheral registers to their default reset values. * @param TIMx: where x can be 1 to 14 to select the TIM periph

* @brief 获取引脚对应的定时器复用编号 * @param Pin: 引脚编号 * @retval 定时器复用编号 */

* @brief Enables or disables the specified TIM interrupts. * @param TIMx: where x can be 1 to 14 to select the TIMx peripheral. * @param TIM_IT

* @brief Initializes the TIMx Channel1 according to the specified parameters in * the TIM_OCInitStruct. * @param TIMx: where x can be 1

* @brief Enables or disables the TIMx peripheral Preload register on CCR1. * @param TIMx: where x can be 1 to 14 except 6 and 7, to select the TIM

* @brief Initializes the TIMx Channel2 according to the specified parameters * in the TIM_OCInitStruct. * @param TIMx: where x can be 1

* @brief Enables or disables the TIMx peripheral Preload register on CCR2. * @param TIMx: where x can be 1, 2, 3, 4, 5, 8, 9 or 12 to select the

* @brief Initializes the TIMx Channel3 according to the specified parameters * in the TIM_OCInitStruct. * @param TIMx: where x can be 1,

* @brief Enables or disables the TIMx peripheral Preload register on CCR3. * @param TIMx: where x can be 1, 2, 3, 4, 5 or 8 to select the TIM per

* @brief Initializes the TIMx Channel4 according to the specified parameters * in the TIM_OCInitStruct. * @param TIMx: where x can be 1,

* @brief Enables or disables the TIMx peripheral Preload register on CCR4. * @param TIMx: where x can be 1, 2, 3, 4, 5 or 8 to select the TIM per

* @brief Fills each TIM_OCInitStruct member with its default value. * @param TIM_OCInitStruct: pointer to a TIM_OCInitTypeDef structure which will

* @brief Sets the TIMx Input Capture 3 prescaler. * @param TIMx: where x can be 1, 2, 3, 4, 5 or 8 to select the TIM peripheral. * @param TIM_I

* @brief Sets the TIMx Input Capture 4 prescaler. * @param TIMx: where x can be 1, 2, 3, 4, 5 or 8 to select the TIM peripheral. * @param TIM_I

* @brief 定时器输出捕获初始化 * @param TIMx: 定时器地址 * @param arr: 自动重装值 * @param psc: 时钟预分频数 * @param TimerChannel: 定时器通道 * @retval 无 */

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* @brief 将定时中断频率转换为重装值和时钟分频值 * @param freq: 中断频率(Hz) * @param clock: 定时器时钟 * @param *period: 重装值地址 * @param *prescaler: 时钟分频值地址 * @retv