OrgST-Microelectronics/STM32CubeF7
1
0
Fork 0
mirror of https://github.com/STMicroelectronics/STM32CubeF7.git synced 2025-05-05 19:30:14 +08:00
Code Issues Releases Wiki Activity
STM32CubeF7/Projects/STM32F767ZI-Nucleo/Examples_LL/TIM/TIM_OnePulse/Src/main.c
Ali Labbene 3600603267 Release v1.15.0
2019-08-05 13:14:59 +01:00

469 lines
16 KiB
C
Raw Blame History

/**
******************************************************************************
* @file Examples_LL/TIM/TIM_OnePulse/Src/main.c
* @author MCD Application Team
* @brief This example describes how to use a timer instance in one
* pulse mode through the STM32F7xx TIM LL API.
* Peripheral initialization done using LL unitary services functions.
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2016 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
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F7xx_LL_Examples
* @{
*/
/** @addtogroup TIM_OnePulse
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Measured pulse delay (in us) */
__IO uint32_t uwMeasuredDelay = 0;
/* Measured pulse length (in us) */
__IO uint32_t uwMeasuredPulseLength = 0;
/* Private function prototypes -----------------------------------------------*/
__STATIC_INLINE void SystemClock_Config(void);
__STATIC_INLINE void ConfigureTIMOnePulse_SwTrigger(void);
__STATIC_INLINE void ConfigureTIMOnePulse_TI2Trigger(void);
__STATIC_INLINE void LED_Init(void);
__STATIC_INLINE void UserButton_Init(void);
static void CPU_CACHE_Enable(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* Enable the CPU Cache */
CPU_CACHE_Enable();
/* Configure the system clock to 216 MHz MHz */
SystemClock_Config();
/* Initialize LED2 */
LED_Init();
/* Initialize button in EXTI mode */
UserButton_Init();
/* Configure timer instance in one pulse mode: timer counter is started by */
/* software. */
ConfigureTIMOnePulse_SwTrigger();
/* Configure timer instance in one pulse mode: timer counter is started by */
/* rising edge on the TI2 input pin. */
ConfigureTIMOnePulse_TI2Trigger();
/* Infinite loop */
while (1)
{
}
}
/**
* @brief This function configures TIM1 to generate a positive pulse on OC1
* with a length of 50 us and after a delay of 50 us after enabling
* the timer counter.
* @note The counter is enabled every time the user presses the user button.
* @note The delay and the pulse length are measured in the CC1 interrupt
* service routine.
* @note Peripheral configuration is minimal configuration from reset values.
* Thus, some useless LL unitary functions calls below are provided as
* commented examples - setting is default configuration from reset.
* @param None
* @retval None
*/
__STATIC_INLINE void ConfigureTIMOnePulse_SwTrigger(void)
{
/*************************/
/* GPIO AF configuration */
/*************************/
/* Enable the peripheral clock of GPIOs */
LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOE);
/* GPIO TIM1_CH1 configuration */
LL_GPIO_SetPinMode(GPIOE, LL_GPIO_PIN_9, LL_GPIO_MODE_ALTERNATE);
LL_GPIO_SetPinPull(GPIOE, LL_GPIO_PIN_9, LL_GPIO_PULL_DOWN);
LL_GPIO_SetPinSpeed(GPIOE, LL_GPIO_PIN_9, LL_GPIO_SPEED_FREQ_HIGH);
LL_GPIO_SetAFPin_8_15(GPIOE, LL_GPIO_PIN_9, LL_GPIO_AF_1);
/***********************************************/
/* Configure the NVIC to handle TIM1 interrupt */
/***********************************************/
NVIC_SetPriority(TIM1_CC_IRQn, 0);
NVIC_EnableIRQ(TIM1_CC_IRQn);
/******************************/
/* Peripheral clocks enabling */
/******************************/
/* Enable the peripheral clock of TIM1 */
LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_TIM1);
/*********************************/
/* Output waveform configuration */
/*********************************/
/* Select counter mode: counting up */
LL_TIM_SetCounterMode(TIM1, LL_TIM_COUNTERMODE_UP);
/* Set the one pulse mode: generate only 1 pulse*/
LL_TIM_SetOnePulseMode(TIM1, LL_TIM_ONEPULSEMODE_SINGLE);
/* Set the TIM1 prescaler to get counter clock frequency at 10 MHz */
/* In this example TIM1 input clock (TIM1CLK) is set to APB2 clock (PCLK2), */
/* since APB2 pre-scaler is equal to 1. */
/* TIM1CLK = PCLK2 */
/* PCLK2 = HCLK */
/* => TIM1CLK = SystemCoreClock (216 MHz) */
LL_TIM_SetPrescaler(TIM1, __LL_TIM_CALC_PSC(SystemCoreClock, 10000000));
/* Set the capture/compare register to get a pulse delay of 50 us */
LL_TIM_OC_SetCompareCH1(TIM1, __LL_TIM_CALC_DELAY(SystemCoreClock, LL_TIM_GetPrescaler(TIM1), 50));
/* Set the autoreload register to get a pulse length of 50s */
LL_TIM_SetAutoReload(TIM1, __LL_TIM_CALC_PULSE(SystemCoreClock, LL_TIM_GetPrescaler(TIM1), 50, 50));
/* Set output channel 1 in PWM2 mode */
LL_TIM_OC_SetMode(TIM1, LL_TIM_CHANNEL_CH1, LL_TIM_OCMODE_PWM2);
/* Configure output channel 1 */
LL_TIM_OC_ConfigOutput(TIM1, LL_TIM_CHANNEL_CH1, LL_TIM_OCPOLARITY_HIGH | LL_TIM_OCIDLESTATE_LOW);
/**************************/
/* TIM1 interrupts set-up */
/**************************/
/* Enable the capture/compare interrupt for channel 1 */
LL_TIM_EnableIT_CC1(TIM1);
/**************************/
/* Start pulse generation */
/**************************/
/* Enable channel 1 */
LL_TIM_CC_EnableChannel(TIM1, LL_TIM_CHANNEL_CH1);
/* Enable TIM1 outputs */
LL_TIM_EnableAllOutputs(TIM1);
/* Enable auto-reload register preload */
LL_TIM_EnableARRPreload(TIM1);
/* Force update generation */
LL_TIM_GenerateEvent_UPDATE(TIM1);
}
/**
* @brief This function configures TIM3 to generate a positive pulse on OC3
* with a length of 3 s and after a delay of 2 s as soon as a positive
* edge is detected on the TI2 input pin.
* @param None
* @retval None
*/
__STATIC_INLINE void ConfigureTIMOnePulse_TI2Trigger(void)
{
uint32_t TIM3_clk;
/******************************/
/* Peripheral clocks enabling */
/******************************/
/* Enable the peripheral clock of GPIOs */
LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOB);;
/* Enable the peripheral clock of TIM3 */
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM3);
/*************************/
/* GPIO AF configuration */
/*************************/
/* GPIO TIM3_CH3 configuration */
LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_0, LL_GPIO_MODE_ALTERNATE);
LL_GPIO_SetPinPull(GPIOB, LL_GPIO_PIN_0, LL_GPIO_PULL_DOWN);
LL_GPIO_SetPinSpeed(GPIOB, LL_GPIO_PIN_0, LL_GPIO_SPEED_FREQ_HIGH);
LL_GPIO_SetAFPin_0_7(GPIOB, LL_GPIO_PIN_0, LL_GPIO_AF_2);
/* GPIO TIM3_CH2 configuration */
LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_5, LL_GPIO_MODE_ALTERNATE);
LL_GPIO_SetPinPull(GPIOB, LL_GPIO_PIN_5, LL_GPIO_PULL_DOWN);
LL_GPIO_SetPinSpeed(GPIOB, LL_GPIO_PIN_5, LL_GPIO_SPEED_FREQ_HIGH);
LL_GPIO_SetAFPin_0_7(GPIOB, LL_GPIO_PIN_5, LL_GPIO_AF_2);
/*******************************/
/* Input trigger configuration */
/*******************************/
/* Map TI2FP2 on TI2 */
LL_TIM_IC_SetActiveInput(TIM3, LL_TIM_CHANNEL_CH2, LL_TIM_ACTIVEINPUT_DIRECTTI);
/* TI2FP2 must detect a rising edge */
LL_TIM_IC_SetPolarity(TIM3, LL_TIM_CHANNEL_CH2, LL_TIM_IC_POLARITY_RISING);
/* Configure TI2FP2 as trigger */
LL_TIM_SetTriggerInput(TIM3, LL_TIM_TS_TI2FP2);
/* Enable the slave mode controller: TI2FP2 is used to start the counter */
LL_TIM_SetSlaveMode(TIM3, LL_TIM_SLAVEMODE_TRIGGER);
/*********************************/
/* Output waveform configuration */
/*********************************/
/* Select counter mode: counting up */
LL_TIM_SetCounterMode(TIM3, LL_TIM_COUNTERMODE_UP);
/* Set the one pulse mode: generate only 1 pulse */
LL_TIM_SetOnePulseMode(TIM3, LL_TIM_ONEPULSEMODE_SINGLE);
/* In this example TIM3 input clock (TIM3CLK) is set to APB1 clock (PCLK1), */
/* since APB1 pre-scaler is equal to 1. */
/* TIM3CLK = PCLK1 */
/* PCLK1 = HCLK */
/* => TIM3CLK = SystemCoreClock (216 MHz) */
TIM3_clk = SystemCoreClock/2;
/* Set the TIM3 prescaler to get counter clock frequency at 2 kHz */
LL_TIM_SetPrescaler(TIM3, __LL_TIM_CALC_PSC(TIM3_clk, 2000));
/* Set the capture/compare register to get a pulse delay of 2s (2000000 us)*/
LL_TIM_OC_SetCompareCH3(TIM3, __LL_TIM_CALC_DELAY(TIM3_clk, LL_TIM_GetPrescaler(TIM3), 2000000));
/* Set the autoreload register to get a pulse length of 3s (3000000 us)*/
LL_TIM_SetAutoReload(TIM3, __LL_TIM_CALC_PULSE(TIM3_clk, LL_TIM_GetPrescaler(TIM3), 2000000, 3000000));
/* Set output channel 1 in PWM2 mode */
LL_TIM_OC_SetMode(TIM3, LL_TIM_CHANNEL_CH3, LL_TIM_OCMODE_PWM2);
/* Configure output channel 3 configuration */
LL_TIM_OC_ConfigOutput(TIM3, LL_TIM_CHANNEL_CH3, LL_TIM_OCPOLARITY_HIGH | LL_TIM_OCIDLESTATE_LOW);
/**************************/
/* Start pulse generation */
/**************************/
/* Enable channel 3 */
LL_TIM_CC_EnableChannel(TIM3, LL_TIM_CHANNEL_CH3);
/* Enable auto-reload register preload */
LL_TIM_EnableARRPreload(TIM3);
/* Force update generation */
LL_TIM_GenerateEvent_UPDATE(TIM3);
}
/**
* @brief Initialize LED1.
* @param None
* @retval None
*/
__STATIC_INLINE void LED_Init(void)
{
/* Enable the LED1 Clock */
LED1_GPIO_CLK_ENABLE();
/* Configure IO in output push-pull mode to drive external LED1 */
LL_GPIO_SetPinMode(LED1_GPIO_PORT, LED1_PIN, LL_GPIO_MODE_OUTPUT);
/* Reset value is LL_GPIO_OUTPUT_PUSHPULL */
//LL_GPIO_SetPinOutputType(LED1_GPIO_PORT, LED1_PIN, LL_GPIO_OUTPUT_PUSHPULL);
/* Reset value is LL_GPIO_SPEED_FREQ_LOW */
//LL_GPIO_SetPinSpeed(LED1_GPIO_PORT, LED1_PIN, LL_GPIO_SPEED_FREQ_LOW);
/* Reset value is LL_GPIO_PULL_NO */
//LL_GPIO_SetPinPull(LED1_GPIO_PORT, LED1_PIN, LL_GPIO_PULL_NO);
}
/**
* @brief Configures User push-button in GPIO or EXTI Line Mode.
* @param None
* @retval None
*/
__STATIC_INLINE void UserButton_Init(void)
{
/* Enable the BUTTON Clock */
USER_BUTTON_GPIO_CLK_ENABLE();
/* Configure GPIO for BUTTON */
LL_GPIO_SetPinMode(USER_BUTTON_GPIO_PORT, USER_BUTTON_PIN, LL_GPIO_MODE_INPUT);
LL_GPIO_SetPinPull(USER_BUTTON_GPIO_PORT, USER_BUTTON_PIN, LL_GPIO_PULL_NO);
/* Connect External Line to the GPIO*/
USER_BUTTON_SYSCFG_SET_EXTI();
/* Enable a rising trigger EXTI line 13 Interrupt */
USER_BUTTON_EXTI_LINE_ENABLE();
USER_BUTTON_EXTI_FALLING_TRIG_ENABLE();
/* Configure NVIC for USER_BUTTON_EXTI_IRQn */
NVIC_EnableIRQ(USER_BUTTON_EXTI_IRQn);
NVIC_SetPriority(USER_BUTTON_EXTI_IRQn,0x03);
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 216000000
* HCLK(Hz) = 216000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSI Frequency(Hz) = 8000000
* PLL_M = 8
* PLL_N = 432
* PLL_P = 2
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 7
* @param None
* @retval None
*/
void SystemClock_Config(void)
{
/* Enable HSE clock */
LL_RCC_HSE_EnableBypass();
LL_RCC_HSE_Enable();
while(LL_RCC_HSE_IsReady() != 1)
{
};
/* Set FLASH latency */
LL_FLASH_SetLatency(LL_FLASH_LATENCY_7);
/* Enable PWR clock */
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
/* Activation OverDrive Mode */
LL_PWR_EnableOverDriveMode();
while(LL_PWR_IsActiveFlag_OD() != 1)
{
};
/* Activation OverDrive Switching */
LL_PWR_EnableOverDriveSwitching();
while(LL_PWR_IsActiveFlag_ODSW() != 1)
{
};
/* Main PLL configuration and activation */
LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSE, LL_RCC_PLLM_DIV_8, 432, LL_RCC_PLLP_DIV_2);
LL_RCC_PLL_Enable();
while(LL_RCC_PLL_IsReady() != 1)
{
};
/* Sysclk activation on the main PLL */
LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL)
{
};
/* Set APB1 & APB2 prescaler */
LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_4);
LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_2);
/* Set systick to 1ms */
SysTick_Config(216000000 / 1000);
/* Update CMSIS variable (which can be updated also through SystemCoreClockUpdate function) */
SystemCoreClock = 216000000;
}
/**
* @brief CPU L1-Cache enable.
* @param None
* @retval None
*/
static void CPU_CACHE_Enable(void)
{
/* Enable I-Cache */
SCB_EnableICache();
/* Enable D-Cache */
SCB_EnableDCache();
}
/******************************************************************************/
/* USER IRQ HANDLER TREATMENT */
/******************************************************************************/
/**
* @brief User button interrupt processing
* @note TIM1 counter is enabled every time the user button is presssed.
* @param None
* @retval None
*/
void UserButton_Callback(void)
{
/* Enable counter. Note that the counter will stop automatically at the */
/* next update event (UEV). */
LL_TIM_EnableCounter(TIM1);
}
/**
* @brief Timer capture/compare interrupt processing
* @note Calculates the pulse delay and pulse length of the output waveform
* generated by TIM1.
* @param None
* @retval None
*/
void TimerCaptureCompare_Callback(void)
{
uint32_t CNT;
uint32_t PSC;
uint32_t ARR;
CNT = LL_TIM_GetCounter(TIM1);
PSC = LL_TIM_GetPrescaler(TIM1);
ARR = LL_TIM_GetAutoReload(TIM1);
uwMeasuredDelay = (CNT * 1000000)/(SystemCoreClock/(PSC + 1));
uwMeasuredPulseLength = ((ARR - CNT) * 1000000)/(SystemCoreClock/(PSC + 1));
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
Reference in New Issue View Git Blame Copy Permalink