after reading your post I gave it 9V by using a 7809 voltage regulator. Still the frequency getting latched is random and does not vary according to the code. I also tried to use the AD75019, which is a 16x16 crosspoint switch matrix through the raspberry pi. i send 16x16 = 256 bits through SPI to p...

I have a breakout board for AD9835 by sparkfun. I am trying to interface it with a Raspberry Pi. Since the chip has 5V SPI, I am using a level shifter(3.3v of Rpi to 5V). All other pins(SS,SCK) work fine, but when i connect the MOSI pin of RPi to the input of level shifter, it inverts the MOSI logic...