使用STM32FCUBEMX V4.20生成工程.使用STM32F030R8T6仿真TIM1 的四路pwm没有波形,甚至运行不了。其他的TIM3的四路正常和TIM15的二路也正常。 PWMèä½ 添加的程序为pwm启动指令和pwm的占空比设置指令: HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_3); HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_1); HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_2); HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_4); __HAL_TIM_SET_COMPARE(&htim1,TIM_CHANNEL_1,40); __HAL_TIM_SET_COMPARE(&htim1,TIM_CHANNEL_2,80); __HAL_TIM_SET_COMPARE(&htim1,TIM_CHANNEL_3,120); __HAL_TIM_SET_COMPARE(&htim1,TIM_CHANNEL_4,190); TIM1的设置程序(cube生成): /* TIM1 init function */ static void MX_TIM1_Init(void) { TIM_ClockConfigTypeDef sClockSourceConfig; TIM_MasterConfigTypeDef sMasterConfig; TIM_OC_InitTypeDef sConfigOC; TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig; htim1.Instance = TIM1; htim1.Init.Prescaler = 24; htim1.Init.CounterMode = TIM_COUNTERMODE_UP; htim1.Init.Period = 200; htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; htim1.Init.RepetitionCounter = 0; htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE; if (HAL_TIM_Base_Init(&htim1) != HAL_OK) { Error_Handler(); } sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL; if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK) { Error_Handler(); } if (HAL_TIM_PWM_Init(&htim1) != HAL_OK) { Error_Handler(); } sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET; sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE; if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK) { Error_Handler(); } sConfigOC.OCMode = TIM_OCMODE_PWM1; sConfigOC.Pulse = 0; sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH; sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH; sConfigOC.OCFastMode = TIM_OCFAST_DISABLE; sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET; sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET; if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1) != HAL_OK) { Error_Handler(); } if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_2) != HAL_OK) { Error_Handler(); } if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_3) != HAL_OK) { Error_Handler(); } if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_4) != HAL_OK) { Error_Handler(); } sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE; sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE; sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF; sBreakDeadTimeConfig.DeadTime = 0; sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE; sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH; sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE; if (HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig) != HAL_OK) { Error_Handler(); } HAL_TIM_MspPostInit(&htim1); } |
改一下这一行试试
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你必须启动定时器计数,
HAL_TIM_Base_Start(&htim1);