我需要电机进行正反转，使用lab11e例程，该例程中有一段是霍尔线的接法可以改变电机的运行方向，但在应用中不切实际，所以需要通过霍尔信号实现电机的正反转，但我有一段程序具体不太清楚，需要各位详细说一下每一句的含义，谢谢！
void HALLBLDC_Ctrl_PwmSet(uint16_t PwmState, _iq PwmDuty)
{
switch(PwmState)
{
case 0: // V+/W-
{
PWM_setOneShotTrip(hal.pwmHandle[PWM_Number_1]);
PWM_clearOneShotTrip(hal.pwmHandle[PWM_Number_2]);
PWM_clearOneShotTrip(hal.pwmHandle[PWM_Number_3]);
{
switch(PwmState)
{
case 0: // V+/W-
{
PWM_setOneShotTrip(hal.pwmHandle[PWM_Number_1]);
PWM_clearOneShotTrip(hal.pwmHandle[PWM_Number_2]);
PWM_clearOneShotTrip(hal.pwmHandle[PWM_Number_3]);
gPwmData.Tabc.value[0] = _IQ(0.0);
gPwmData.Tabc.value[1] = PwmDuty;
gPwmData.Tabc.value[2] = -PwmDuty;
gPwmData.Tabc.value[1] = PwmDuty;
gPwmData.Tabc.value[2] = -PwmDuty;
gHall_BLDC_Flag_Is_fdb = 1;
break;
}
case 1: // U+/W-
{
PWM_clearOneShotTrip(hal.pwmHandle[PWM_Number_1]);
PWM_setOneShotTrip(hal.pwmHandle[PWM_Number_2]);
PWM_clearOneShotTrip(hal.pwmHandle[PWM_Number_3]);
break;
}
case 1: // U+/W-
{
PWM_clearOneShotTrip(hal.pwmHandle[PWM_Number_1]);
PWM_setOneShotTrip(hal.pwmHandle[PWM_Number_2]);
PWM_clearOneShotTrip(hal.pwmHandle[PWM_Number_3]);
gPwmData.Tabc.value[0] = PwmDuty;
gPwmData.Tabc.value[1] = _IQ(0.0);
gPwmData.Tabc.value[2] = -PwmDuty;
gPwmData.Tabc.value[1] = _IQ(0.0);
gPwmData.Tabc.value[2] = -PwmDuty;
gHall_BLDC_Flag_Is_fdb = 0;
break;
}
break;
}
