|
LDmicro Forum - PWM |
|||
|
|
|
(you are viewing a thread; or go back to list of threads)
PWM (by Frank)
How i calculate minimum frequency for PWM on 16F876 at 4 MHz clock?
Thanks
(no subject) (by MGP)
See the datasheet page 61
With a 4MHz clock you can go above 240MHz. I wouldn't calculate it but try, LDmicro shows an error when compiling if you go too high or too low.
(no subject) (by MGP)
Sorry must be 240kHz.
(no subject) (by Frank)
240 kilohertz? really? and if i need 30 max 40 hertz?
what i change? thanks
(no subject) (by MGP)
30 - 40Hz is too low for a 4MHz clock, try it, LDmicro will give you an error.
You need an 800kHZ clock or lower or a controller with a internal oscillator. Read this https://github.com/LDmicro/LDmicro/wiki/LDmicro-PWM
(no subject) (by Frank)
Thanks everyone for the answers. I Ttry at 1Mhz clock.
I still have a question: What math operation should I use if I want reverse PWM to the signal? For example now I have ADC inputs from 0 to 1024 and PWM from 0 to 100%. I would like PWM 100% at ADC 0 and PWM 0 at ADC 1024. Thanks to everyone and greetings from Italy.
(no subject) (by MGP)
This is how I do it.
(no subject) (by Frank)
Error at open your file.
Yor version of LDmicro? Thanks
Post a reply to this comment:
|
|
|