Hi.
I have a problem with PGA900 UART. It is not working with CPU clock frequencies other than 1MHz.
Is this normal or maybe I do something improperly?
In code example for PGA900 (sldc010a.zip) there are a few sets of UART settings for different clock frequencies. But in the datasheet there is a formula
BAUD_RATE = round( 250000 / (Desired baud rate) ) – 1
It seems to be for 1MHz.
UART is working pretty well with 1MHz CPU clock, but when I try to switch clock to 2MHz or 4MHz (and change baud divider respectively), I find it not working. I'd like to use 4MHz clock in order to realize better digital filtering.
Thanks.