Pulsin alternative

is there such a a thing as a Pulsin alternative?
i'm using a 12F675

right now i have a chunk of code

Code:

---

radioIn:   
        PULSIN Radio,1,P       
        ' With 20 meg osc pulse measures at 2 millisecs, With 4 meg osc pulse measures at 10 millisecs
        PWM NpN, P, 100
    goto radioin

---

Radio is defined as an input,on GPIO.3 save pulse as "P"
PWM NpN is defined as an output on GPIO.2, use P as the PWM Duty, Cycle = 100 (also tried Cycle = 3, which had a better result)
goto = do it forever

OK, i am driving a 12V LED strip with a NPN Transistor. reading data from an R/C Airplane Receiver, this part works good

the problem is that the pulsin command takes up a LOT of time, enough time that you can see the flicker in the LED's (try it it's enough to give you a seizure).

is there an alternative to Pulsin that maybe can do its job a little faster?
or is this where you are better off to find a chip with HPWM and go that route?

thank you in advance

ok my problem is in my external components,
i tried playing with the Define PULSIN_MAX that didn't work
i swapped out my 1uf cap for a 4.7uf cap little change
47uf cap great improvement, a little to much capacity though, it makes them sluggish to respond, I'm gona try a 10uf next and i bet that fixes it right up

Switch over to a 12F683 and use the hardware PWM outputs

sweet i'm pulling up the data sheet right now!!!
Thank you!!

Look at the 12F615 too.

Quote:

---

Originally Posted by sbobowski

is there such a a thing as a Pulsin alternative?
i'm using a 12F675

right now i have a chunk of code

Code:

---

radioIn:   
        PULSIN Radio,1,P       
        ' With 20 meg osc pulse measures at 2 millisecs, With 4 meg osc pulse measures at 10 millisecs
        PWM NpN, P, 100
    goto radioin

---

Radio is defined as an input,on GPIO.3 save pulse as "P"
PWM NpN is defined as an output on GPIO.2, use P as the PWM Duty, Cycle = 100 (also tried Cycle = 3, which had a better result)
goto = do it forever

OK, i am driving a 12V LED strip with a NPN Transistor. reading data from an R/C Airplane Receiver, this part works good

the problem is that the pulsin command takes up a LOT of time, enough time that you can see the flicker in the LED's (try it it's enough to give you a seizure).

is there an alternative to Pulsin that maybe can do its job a little faster?
or is this where you are better off to find a chip with HPWM and go that route?

thank you in advance

---

The resolution of PULSIN is in US:
"The resolution of PULSIN is dependent upon the oscillator frequency. If a 4MHz oscillator is used, the pulse width is returned in 10us increments. If a 20MHz oscillator is used, the pulse width will have a 2us resolution. Defining an OSC value has no effect on PULSIN."