AVR-Chat

dear all:

i m using bascom AVR and AtMega8535 chip to program to switching the 4 mosfet on off in a Hbridge cct. i want to generate ac squarewave output from the Hbridge cct but i cant get it because it look like not square completely.the output is to control a motor(15V 2A) in 50 Hz.

(1) my simple program like this

Do

reset pind.2

set pind.1

reset pind.2

waitms 20

reset pind.1

set pind.2

waitms20

loop

one output is to 2 mosfet. can anyone suggest other command other than the above one? coz the timing may be not accurate.later i want to switching 12 mosfet so i cant use PWM command.

(2) have anyone use IR2110 mosfet driver before.i am using it now but it is complicated in connection. i need to connect the chip to optocoupler to mosfet driver and then to the mosfet.

thanks

from kim