Hi friends, I need an assembly language program to test my frequency generator LM331 ,I have written program but cant make it work ,I need to measure freq from 5khz to 50khz Please if anyone could help me with hex codes and or assembly codes. thanks in advance rakesh
We'd need a schematic just to start helping you. Can you put a .PDF version of your schematic up on your website for us to take a look at? Without a schematic we won't know which 8051 you are using, your clock rate, what pins you've connected to your LM331, etc. Also, why can't we write it in C? You can take the compiler's assembly output anytime you want. - Mark
hi mark, I have no schematics infact I have made the similar circuit as stated in the data sheet of lm331 .pin 3 is freq out and pin 7 is voltage in ,the freq varies from around 5khz to 70Khz which is my desired range of interest.I am using timer0 that is pin-13 of 89c51 to measure freq input and trying to glow 7 leds tied to port 1 to see the results ie p0.0-----glows at freq below 5.9KHZ p1.0-----glows at 5.9KHZ p1.1-----glows at 8.7KHZ p1.2-----glows at 10.2KHZ p1.3-----glows at 11.2KHZ p1.4-----glows at 15.00KHZ p1.5-----glows at 19.5KHZ p1.6-----glows at 30KHZ p1.7-----glows at above 30KHZ This is a college project for Voltage range indicator. I shall be obliged if helped. Thanks rakesh