[问答]

我可以改变什么来获得TIMER1的输出信号呢？

问答对人有帮助，内容完整，我也想知道答案 0 我正在尝试使用 tiMER1 的输出比较模式在 PE9 引脚上产生准确的时间过程。出于某种原因，我没有在该引脚上获得输出信号。相反，当我使用与 TIMER1 具有相同设置的 TIMER3 时，我在 PC7 引脚上得到了一个输出信号。这是什么原因？我可以改变什么来获得 TIMER1 的输出信号？ / **************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * © Copyright (c) 2022 STMicroelectronics. * All rights reserved. * * 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 * ****************************************************************************** / #include "main.h" void SystemClock_Config(void); static void MX_TIM1_Init(void); static void MX_ICACHE_Init(void); static void MX_TIM3_Init(void); /* * @brief The application entry point. * @retval int / int main(void) { SystemClock_Config(); MX_TIM1_Init(); MX_ICACHE_Init(); MX_TIM3_Init(); LL_TIM_CC_EnableChannel(TIM1, LL_TIM_CHANNEL_CH1); LL_TIM_EnableCounter(TIM1); LL_TIM_GenerateEvent_UPDATE(TIM1); LL_TIM_CC_EnableChannel(TIM3, LL_TIM_CHANNEL_CH2); LL_TIM_EnableCounter(TIM3); LL_TIM_GenerateEvent_UPDATE(TIM3); while (1) { } } /* * @brief System Clock Configuration * @retval None / void SystemClock_Config(void) { LL_FLASH_SetLatency(LL_FLASH_LATENCY_5); while(LL_FLASH_GetLatency()!= LL_FLASH_LATENCY_5) { } LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE0); LL_RCC_HSI48_Enable(); / Wait till HSI48 is ready / while(LL_RCC_HSI48_IsReady() != 1) { } LL_RCC_LSI_Enable(); / Wait till LSI is ready / while(LL_RCC_LSI_IsReady() != 1) { } LL_RCC_MSI_Enable(); / Wait till MSI is ready / while(LL_RCC_MSI_IsReady() != 1) { } LL_RCC_MSI_EnableRangeSelection(); LL_RCC_MSI_SetRange(LL_RCC_MSIRANGE_6); LL_RCC_MSI_SetCalibTrimming(0); LL_PWR_EnableBkUpAccess(); LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_MSI, LL_RCC_PLLM_DIV_1, 55, LL_RCC_PLLR_DIV_2); LL_RCC_PLL_ConfigDomain_48M(LL_RCC_PLLSOURCE_MSI, LL_RCC_PLLM_DIV_1, 55, LL_RCC_PLLQ_DIV_2); LL_RCC_PLL_EnableDomain_48M(); LL_RCC_PLL_EnableDomain_SYS(); LL_RCC_PLL_Enable(); / Wait till PLL is ready / while(LL_RCC_PLL_IsReady() != 1) { } / Intermediate AHB prescaler 2 when target frequency clock is higher than 80 MHz / LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_2); LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL); / Wait till System clock is ready / while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL) { } / Insure 1µs transition state at intermediate medium speed clock based on DWT/ CoreDebug->DEMCR \|= CoreDebug_DEMCR_TRCENA_Msk; DWT->CTRL \|= DWT_CTRL_CYCCNTENA_Msk; DWT->CYCCNT = 0; while(DWT->CYCCNT < 100); LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1); LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1); LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1); LL_SetSystemCoreClock(110000000); / Update the time base / if (HAL_InitTick (TICK_INT_PRIORITY) != HAL_OK) { Error_Handler(); } } /* * @brief ICACHE Initialization Function * @param None * @retval None / static void MX_ICACHE_Init(void) { /* Enable instruction cache in 1-way (direct mapped cache) / LL_ICACHE_SetMode(LL_ICACHE_1WAY); LL_ICACHE_Enable(); } /* * @brief TIM1 Initialization Function * @param None * @retval None / static void MX_TIM1_Init(void) { LL_TIM_InitTypeDef TIM_InitStruct = {0}; LL_TIM_OC_InitTypeDef TIM_OC_InitStruct = {0}; LL_TIM_BDTR_InitTypeDef TIM_BDTRInitStruct = {0}; LL_GPIO_InitTypeDef GPIO_InitStruct = {0}; / Peripheral clock enable / LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_TIM1); TIM_InitStruct.Prescaler = 10999; TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP; TIM_InitStruct.Autoreload = 9999; TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1; LL_TIM_Init(TIM1, &TIM_InitStruct); LL_TIM_DisableARRPreload(TIM1); TIM_OC_InitStruct.OCMode = LL_TIM_OCMODE_TOGGLE; TIM_OC_InitStruct.OCState = LL_TIM_OCSTATE_DISABLE; TIM_OC_InitStruct.OCNState = LL_TIM_OCSTATE_DISABLE; TIM_OC_InitStruct.CompareValue = 0; TIM_OC_InitStruct.OCPolarity = LL_TIM_OCPOLARITY_HIGH; LL_TIM_OC_Init(TIM1, LL_TIM_CHANNEL_CH1, &TIM_OC_InitStruct); LL_TIM_OC_DisableFast(TIM1, LL_TIM_CHANNEL_CH1); LL_TIM_SetTriggerOutput(TIM1, LL_TIM_TRGO_CC1IF); LL_TIM_SetTriggerOutput2(TIM1, LL_TIM_TRGO2_CC1F); LL_TIM_DisableMasterSlaveMode(TIM1); LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOE); /TIM1 GPIO Configuration PE9 ------> TIM1_CH1 / GPIO_InitStruct.Pin = LL_GPIO_PIN_9; GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE; GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW; GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL; GPIO_InitStruct.Pull = LL_GPIO_PULL_NO; GPIO_InitStruct.Alternate = LL_GPIO_AF_1; LL_GPIO_Init(GPIOE, &GPIO_InitStruct); } /** * @brief TIM3 Initialization Function * @param None * @retval None / static void MX_TIM3_Init(void) { LL_TIM_InitTypeDef TIM_InitStruct = {0}; LL_TIM_OC_InitTypeDef TIM_OC_InitStruct = {0}; LL_GPIO_InitTypeDef GPIO_InitStruct = {0}; / Peripheral clock enable / LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM3); TIM_InitStruct.Prescaler = 10999; TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP; TIM_InitStruct.Autoreload = 9999; TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1; LL_TIM_Init(TIM3, &TIM_InitStruct); LL_TIM_DisableARRPreload(TIM3); TIM_OC_InitStruct.OCMode = LL_TIM_OCMODE_TOGGLE; TIM_OC_InitStruct.OCState = LL_TIM_OCSTATE_DISABLE; TIM_OC_InitStruct.OCNState = LL_TIM_OCSTATE_DISABLE; TIM_OC_InitStruct.CompareValue = 0; TIM_OC_InitStruct.OCPolarity = LL_TIM_OCPOLARITY_HIGH; LL_TIM_OC_Init(TIM3, LL_TIM_CHANNEL_CH2, &TIM_OC_InitStruct); LL_TIM_OC_DisableFast(TIM3, LL_TIM_CHANNEL_CH2); LL_TIM_SetTriggerOutput(TIM3, LL_TIM_TRGO_CC1IF); LL_TIM_DisableMasterSlaveMode(TIM3); LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOC); /TIM3 GPIO Configuration PC7 ------> TIM3_CH2 / GPIO_InitStruct.Pin = LL_GPIO_PIN_7; GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE; GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW; GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL; GPIO_InitStruct.Pull = LL_GPIO_PULL_NO; GPIO_InitStruct.Alternate = LL_GPIO_AF_2; LL_GPIO_Init(GPIOC, &GPIO_InitStruct); } /** * @brief This function is executed in case of error occurrence. * @retval None / void Error_Handler(void) { / User can add his own implementation to report the HAL error return state / __disable_irq(); while (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) { } #endif /* USE_FULL_ASSERT / /********************* (C) COPYRIGHT STMicroelectronics *END OF FILE**/ 0
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