unsigned int ZHANKONGBI = 50;
PWMB_PSCR = 0x00;
PWMB_PS = 0x04;
PWMB_CCER1 = 0x00
PWMB_CCMR2 = 0x68;
PWMB_CCER1 = 0x33
PWMB_ENO = 0x04;
PWMB_BKR = 0x80;
PWMB_CR1 = 0x01;
PWMB_ARR = 299;
PWMB_CCR6 = 150;
PWMB_ARR = 30000000L / PINLU - 1;
PWMB_CCR6 = (PWMB_ARR / 90) * ZHANKONGBI; //錯
現(xiàn)在問題是頻率在100KHz時占空比是50%，調(diào)整輸出頻率到110KHz時占空比變成了55%,90KHz時變成45%。如何固定占空比，只有調(diào)整占空比時才改變？就是PWMB_CCR6的跟隨公式？
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