在PWM10DCL中设置比特6或7时，PWM输出变为100%

我在PIC16F1779 I.PWM10DCH和PWM10DCL上占空比寄存器有问题。PWM10DCH工作如预期，但是每当我在PWM10DCL中设置比特6或7时，PWM输出变为100%。因为PWM10DCL的第6位和第7位是10位占空比寄存器的LSB，所以我希望占空比只有很小的变化？我使用XC8和最新的MPLAB IDE V3.35，下面的PICKIT3是我的初始化代码和PWM达到100%时的一个例子。有什么想法吗？另外，如果其他人遇到这个问题，发现这个线程在这个部分的数据表上有一个错误。数据表表示，PWM10OUT的RXYPPS是011110。它应该读011100。这浪费了我的时间，所以我希望这可以固定在未来的数据表上。LATA=0；TRISA=0xFF；PWM10CON=0x00；T2PR=0x52；//周期寄存器PWM9DCL=0x00；PWM9DCH=0x00；PIR1bits.TMR2IF=0；T2CLKCON=0b00010；//osc/4内部T2CON=0x00；T2CON=0b10100000；//在打开(!PIR1bits.TMR2IF；TRISA=0xF0；RA3PPS=0b00011100；PWM10CON=0x80；PWM10DCH=0x25；//使用这两行占空比与预期值相同，PWM10DCL=0x00；PWM10DCH=0x25；//使用这两行占空比是100%PWM10DCL=0xC0；//如果将6位或7位的占空比设置为100%；



      以下为原文

    I am having trouble with the duty cycle registers on the PIC16F1779 ie. PWM10DCH and PWM10DCL . PWM10DCH is working as expected however whenever I set bits 6 or 7 in PWM10DCL the PWM output goes to 100%. Since bits 6 and 7 of PWM10DCL are the LSBs of the 10 bit duty cycle register I would expect only small changes in the duty cycle? I am using XC8 with the latest MPLAB IDE V3.35 and a PICKIT3 Below is my initialization code and  an example of when the PWM goes to 100% . Any thoughts why? Also in case others having trouble with this part find this thread there is an error on the Datasheet for this part. The datasheet says RxyPPS for PWM10_out is 011110 . It should read 011100 . This wasted hours of my time so I hope this can be fixed on future datasheets.

LATA=0;
TRISA=0xFF;
PWM10CON=0x00;
T2PR=0x52; // period register
PWM9DCL = 0x00;
PWM9DCH = 0x00;
PIR1bits.TMR2IF = 0;
T2CLKCON=0b00000010; // osc/4 internal
T2CON = 0x00;
T2CON=0b10100000; // prescale 4 timer on
while (!PIR1bits.TMR2IF);
TRISA=0xF0;
RA3PPS=0b00011100; ;
PWM10CON = 0x80;


PWM10DCH= 0x25; // Using these 2 lines the duty cycle is as expected
PWM10DCL=0x00;

PWM10DCH= 0x25; // Using these 2 lines the duty cycle is 100%
PWM10DCL=0xC0; // if either bit 6 or 7 is set the duty cycle goes to 100%