Mike R / Mbed 2 deprecated Pinscape_Controller_v1

Pinscape Controller version 1 fork. This is a fork to allow for ongoing bug fixes to the original controller version, from before the major changes for the expansion board project.

Dependencies:   FastIO FastPWM SimpleDMA mbed

Fork of Pinscape_Controller by Mike R

potSensor.h@17:ab3cec0c8bf4, 2015-02-27 (annotated)

Committer:
mjr
Date:
Fri Feb 27 04:14:04 2015 +0000
Revision:
17:ab3cec0c8bf4
Child:
23:14f8c5004cd0
FastIO and FastAnalogIn; better firing event sensing; potentiometer plunger sensor option; new key debouncing; ZB Launch Ball feature

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mjr 17:ab3cec0c8bf4 1 // Potentiometer plunger sensor
mjr 17:ab3cec0c8bf4 2 //
mjr 17:ab3cec0c8bf4 3 // This file implements our generic plunger sensor interface for a
mjr 17:ab3cec0c8bf4 4 // potentiometer.
mjr 17:ab3cec0c8bf4 5
mjr 17:ab3cec0c8bf4 6 #include "FastAnalogIn.h"
mjr 17:ab3cec0c8bf4 7
mjr 17:ab3cec0c8bf4 8 // The potentiometer doesn't have pixels, but we still need an
mjr 17:ab3cec0c8bf4 9 // integer range for normalizing our digitized voltage level values.
mjr 17:ab3cec0c8bf4 10 // The number here is fairly arbitrary; the higher it is, the finer
mjr 17:ab3cec0c8bf4 11 // the digitized steps. A 40" 1080p HDTV has about 55 pixels per inch
mjr 17:ab3cec0c8bf4 12 // on its physical display, so if the on-screen plunger is displayed
mjr 17:ab3cec0c8bf4 13 // at roughly the true physical size, it's about 3" on screen or about
mjr 17:ab3cec0c8bf4 14 // 165 pixels. So the minimum quantization size here should be about
mjr 17:ab3cec0c8bf4 15 // the same. For the pot sensor, this is just a scaling factor,
mjr 17:ab3cec0c8bf4 16 // so higher values don't cost us anything (unlike the CCD, where the
mjr 17:ab3cec0c8bf4 17 // read time is proportional to the number of pixels we sample).
mjr 17:ab3cec0c8bf4 18 const int npix = 4096;
mjr 17:ab3cec0c8bf4 19
mjr 17:ab3cec0c8bf4 20 class PlungerSensor
mjr 17:ab3cec0c8bf4 21 {
mjr 17:ab3cec0c8bf4 22 public:
mjr 17:ab3cec0c8bf4 23 PlungerSensor() : pot(POT_PIN)
mjr 17:ab3cec0c8bf4 24 {
mjr 17:ab3cec0c8bf4 25 pot.enable();
mjr 17:ab3cec0c8bf4 26 }
mjr 17:ab3cec0c8bf4 27
mjr 17:ab3cec0c8bf4 28 void init()
mjr 17:ab3cec0c8bf4 29 {
mjr 17:ab3cec0c8bf4 30 }
mjr 17:ab3cec0c8bf4 31
mjr 17:ab3cec0c8bf4 32 int lowResScan()
mjr 17:ab3cec0c8bf4 33 {
mjr 17:ab3cec0c8bf4 34 return int(pot.read() * npix);
mjr 17:ab3cec0c8bf4 35 }
mjr 17:ab3cec0c8bf4 36
mjr 17:ab3cec0c8bf4 37 bool highResScan(int &pos)
mjr 17:ab3cec0c8bf4 38 {
mjr 17:ab3cec0c8bf4 39 pos = int(pot.read() * npix);
mjr 17:ab3cec0c8bf4 40 return true;
mjr 17:ab3cec0c8bf4 41 }
mjr 17:ab3cec0c8bf4 42
mjr 17:ab3cec0c8bf4 43 void sendExposureReport(USBJoystick &)
mjr 17:ab3cec0c8bf4 44 {
mjr 17:ab3cec0c8bf4 45 }
mjr 17:ab3cec0c8bf4 46
mjr 17:ab3cec0c8bf4 47 private:
mjr 17:ab3cec0c8bf4 48 FastAnalogIn pot;
mjr 17:ab3cec0c8bf4 49 };