PWM_ReadStatusRegister()

[DaCh_4286001]

What's the difference between these 2 routine?

1. int a = 0;

    a = PWM_ReadStatusRegister();

    while((a & PWM_STATUS_CMP1) == 0);

2. while((PWM_ReadStatusRegister() & PWM_STATUS_CMP1) == 0);

the first one will stuck in while loop while the second one can pass while loop.

[Bob_Marlowe · Accepted solution]

In the first (stuck) while-loop the variable a never gets updated.

PWM_STATUS_CMP1 is a bit-mask and does not change ether.

Bob

[DaCh_4286001]

Thank you Bob