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P_SW2 |=0x80;
PWMA_ARR_DATA=arr <<1;
PWMA_PERIOD=144000000/arr;
PWM3_Duty=0;
PWM4_Duty=PWMA_PERIOD;
PWM5_Duty=PWMA_PERIOD/2;
PWM6_Duty=PWMA_PERIOD/2;
HSPWMA_CFG = 0x03;
WritePWMA((u8)&PWMA_ARRH, (u8)(PWMA_PERIOD-1)>> 8); // 自动重装载寄存器, 控制PWM周期
WritePWMA((u8)&PWMA_ARRL, (u8)(PWMA_PERIOD-1));
WritePWMA((u8)&PWMA_CCR3H, (u8)(PWM3_Duty >> 8)); //设置占空比时间
WritePWMA((u8)&PWMA_CCR3L, (u8)PWM3_Duty);
WritePWMA((u8)&PWMA_CCR4H, (u8)(PWM4_Duty >> 8));
WritePWMA((u8)&PWMA_CCR4L, (u8)PWM4_Duty);
HSPWMA_CFG = 0x13;
WritePWMA((u8)&PWMA_CCR5H, (u8)(PWM5_Duty >> 8));
WritePWMA((u8)&PWMA_CCR5L, (u8)PWM5_Duty);
WritePWMA((u8)&PWMA_CCR6H, (u8)(PWM6_Duty >> 8));
WritePWMA((u8)&PWMA_CCR6L, (u8)PWM6_Duty);
为什么这样配置实现不了
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