How to update the duty and cycle in using PWM functions?
PWM duty cycle can be changed by TC0R, period cycle can be changed through TC0C; as the following example shows:
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；Example 1: PWM frequency / period can be changed by changing TC0C value in interrupt.
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| inttc0: | |||
| mov | a,#20h | ; PWM output frequency can be changed by | |
| mov | tc0c,a | modify TC0C value. | |
| b0bclr | ftc0irq |
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；Example 2: PWM duty cycle can be changed by changing TC0R value.
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| MOV | A, #30H |
| B0MOV | TC0R, A |
| INCMS | BUF0 |
| NOP | |
| B0MOV | A, BUF0 |
| B0MOV | TC0R, A |