我使用定时器1并在CH1和CH2N上设置PWM
CH1工作正常
但CH2N不工作（我检查引脚在普通GPIO上工作正常）
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？
void MX_TIM1_Init（void）
{
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};
htim1.Instance = TIM1;
htim1.Init.Prescaler = 85;
htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
htim1.Init.Period = 10000;
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）
{
错误处理程序（）;
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if（HAL_TIM_ConfigClockSource（＆htim1，＆sClockSourceConfig）！= HAL_OK）
{
错误处理程序（）;
}
if（HAL_TIM_PWM_Init（＆htim1）！= HAL_OK）
{
错误处理程序（）;
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if（HAL_TIMEx_MasterConfigSynchronization（＆htim1，＆sMasterConfig）！= HAL_OK）
{
错误处理程序（）;
}
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）
{
错误处理程序（）;
}
if（HAL_TIM_PWM_ConfigChannel（＆htim1，＆sConfigOC，TIM_CHANNEL_2）！= HAL_OK）
{
错误处理程序（）;
}
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）
{
错误处理程序（）;
}
HAL_TIM_MspPostInit（＆htim1）;
}
您需要使用两个功能。在我的情况下，在tim1 channel_3上是2个PWM
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
在你的情况下，它应该是：
HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1);
HAL_TIMEx_PWMN_Start(&htim1, TIM_CHANNEL_2);