STM32F030K6T6定时器 1 PWM CH2N 不工作

Question

i 使用定时器 1 并在 CH1 和 CH2N 上设置 PWM

CH1 工作正常

但是 CH2N 不起作用(我在 nromal GPIO 上检查了引脚工作正常)

我的代码只有两行：

HAL_TIM_PWM_Start(&htim1， TIM_CHANNEL_1);

HAL_TIM_PWM_Start(&htim1， TIM_CHANNEL_2);

有人帮我吗？

无效MX_TIM1_Init(无效)

{

TIM_ClockConfigTypeDef sClockSourceConfig = {0};

TIM_MasterConfigTypeDef sMasterConfig = {0};

TIM_OC_InitTypeDef sConfigOC = {0};

TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};

htim1.实例 = TIM1;

htim1.初始化预分频器 = 85;

htim1.初始化计数器模式 = TIM_COUNTERMODE_UP;

htim1.初始化周期 = 10000;

htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;

htim1.初始化重复计数器 = 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_UPDATE;

sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;

if (HAL_TIMEx_MasterConfigSynchronization(&htim1， &sMasterConfig) ！= HAL_OK)

{

Error_Handler();

}

sConfigOC.OCMode = TIM_OCMODE_PWM2;

sConfigOC.Pulse = 5000;

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();

}

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);

}

Answer 1

您需要使用两个函数。 在我的情况下，它是 2 PWM 在 tim1 channel_3

HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_3);    //starts PWM on CH2 pin  TIM1
HAL_TIMEx_PWMN_Start(&htim1, TIM_CHANNEL_3); //starts PWM on CH1N pin TIM1

在您的情况下，它应该是：

HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1);
HAL_TIMEx_PWMN_Start(&htim1, TIM_CHANNEL_2);