I see that both of you are not writing to the control register; you should at least write to it once, since leaving it at zero means the LEDs will be driven with 30% maximum current. And I highly recommend writing to it every time you refresh the PWM registers, or maybe every 10 times. If you ever get interference on the lines, you might accidentally set the control register to an unknown value. So refresh it every so often, to make sure it's in the right state.
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I see that both of you are
I see that both of you are not writing to the control register; you should at least write to it once, since leaving it at zero means the LEDs will be driven with 30% maximum current. And I highly recommend writing to it every time you refresh the PWM registers, or maybe every 10 times. If you ever get interference on the lines, you might accidentally set the control register to an unknown value. So refresh it every so often, to make sure it's in the right state.