STM32F103RC MotorControl Workbench 5.4.1 ,STM32 FW 1.8.0 when I chose three shunt resistors is work,and when I change to single shunt resistors there is not pwm in TIM1_CH1N TIM1_CH2N and TIM1_CH3N,and have in TIM1_CH1 what can I do now! thanks a lot!.