I have a Raspberry Pi 2 Model B and want sample the GPIO 27 with 14400 samples per second. GPIO 27 is a pin with no Uart and no other before implemented funktions, i need the samples as single line.
The Problem is that linux gives my application ever few miliseconds time slice(e.g. every 15 ms or 20ms (i didn´t know it exactly)) but my application should sample the GPIO 27 ever 70µs. The Problem is now that while Linux do something other i miss 285 samples. Know someone a driver oder some other solution witch can help me to rise up the time slice for my application?
With frindly wishes sniffi