Is it possible to measure frequency using mini2440? I have a device that outputs frequency and I want to read it using mini2440
Measuring frequency using mini2440
> I have a device that outputs frequency and I want to read it > using mini2440 Is this device a audio signal generator, RF signal generator or ? A method on 8bit micros with no OS to get in the way is using input capture on a timer. Unfortunately, just about any OS is going to make this difficult. Search around for "hard real-time OS" and maybe you be able to measure up in the kHz range (I'm guessing here). Another technique at low frequencies is "frequency to voltage converter" search "tachometer" and feed the output to the ADC. So, what frequency range, what accuracy, what voltage or power levels, etc.
Check the S3C2440.pdf and see how fast the input capture can work with no OS. Programming it in assembly might extend the capabilities. Check the StartOS thread.