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发表于 2015-3-20 15:53:48
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case 0 :
/* PhaseA configuration */
TIM_CCxCmd(BLDC_TIMER_NUM, TIM_Channel_1, TIM_CCx_Disable); // 0
TIM_OC1NPolarityConfig(BLDC_TIMER_NUM, TIM_OCNPolarity_High);
TIM_CCxNCmd(BLDC_TIMER_NUM, TIM_Channel_1, TIM_CCxN_Disable); // 0
/* PhaseB configuration */
TIM_CCxCmd(BLDC_TIMER_NUM, TIM_Channel_2, TIM_CCx_Enable); // 1
TIM_CCxNCmd(BLDC_TIMER_NUM, TIM_Channel_2, TIM_CCxN_Enable); //同步整流
/* PhaseC configuration */
TIM_CCxCmd(BLDC_TIMER_NUM, TIM_Channel_3, TIM_CCx_Disable); // 0
TIM_OC3NPolarityConfig(BLDC_TIMER_NUM, TIM_OCNPolarity_Low);
TIM_CCxNCmd(BLDC_TIMER_NUM, TIM_Channel_3, TIM_CCxN_Disable); // 1
break;
请问 这段程序是哪两项导通? 还有这里设置极性有什么用呢? |
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