Smooth LED fading via PWM

[HankMcSpank]

These are high brightness blue leds (quoted at about 25mA)

I'm running the PIC at a voltage supply of 3.0Vand driving the LEDs directly from a PIC output pin (ie slightly less than the LED's 3.2 to 3.4V fwd voltage - so as to under drive them a little & protect the PIC - no series limiting resistor...yeah, I know contentious subject!)

With a PWM value of 1 at 8 bits, that oiught to be very dull to the poiunt of not being able to see the LED, bit that's not the case...sure it's dull;, but it's clear that the LED is on...so I'm thinking if I up the number of steps to say 512 or even 1024, then that should allow much more granularity at the lower end of the PWM (where the LED remains rather perky still)