Diff: slider_diatonic_v1.cpp

Revision:

3:f68e9cdfaf2d

Parent:

2:7f347d6a6422

Child:

4:de991c90af6a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/slider_diatonic_v1.cpp	Wed Feb 18 15:27:17 2015 +0000
@@ -0,0 +1,117 @@
+#include "mbed.h"
+#include "SLCD.h"
+#include "TSISensor.h"
+
+
+#define CHANNELON   0
+#define CHANNELOFF  1
+#define LCDLEN      10
+#define DATATIME    100 //milli seccnds
+//LCD messages
+
+
+
+// Operating parameters
+#define SIDETONE    700.0   
+#define TONEMIN     200.0
+#define TONEINT     800.00 // So tone max is 1000
+#define TONEON      0.50
+#define TONEOFF     0.0
+#define SPEEDAST    0
+#define TONEAST     1
+#define NUMTONES    10
+#define LEDPERIOD   0.001
+//#define PRINTDEBUG
+
+Serial pc(USBTX, USBRX);
+
+float diatonicScale[NUMTONES] = {246.94, 261.63,293.66,329.63,349.23,392.00,440.00,493.88,523.25,587.33};
+SLCD slcd; //define LCD display
+
+TSISensor tsiScaling; // Capacitive sensor/slider
+
+
+PwmOut led(LED_RED);
+DigitalOut outPin(PTC9); //J1-16
+PwmOut soundOut(PTA13);
+Timer dataTimer;
+// Global scalars
+char lcdData[LCDLEN];
+
+float tonePeriod;
+float toneFreq = SIDETONE;
+
+
+
+void LCDMessNoDwell(char *lMess){
+        slcd.Home();
+        slcd.clear();
+        slcd.printf(lMess);
+} 
+  
+void diatonicAdjust( float scaling) {
+    int tempInt;
+    int scaleIndex;
+    static int oldScaleIndex = 0;
+/* There appears to be a set up time for setting the PWM time period
+only do a nes set up if the indext changes.
+*/
+    scaleIndex = (int)(NUMTONES * scaling);
+    if (scaleIndex != oldScaleIndex) {
+        toneFreq = diatonicScale[scaleIndex];
+        tonePeriod = 1.0/toneFreq;  
+        soundOut.period(tonePeriod); // adjusting period
+        soundOut.write(TONEON); // there is a setup time for both period and DF
+        oldScaleIndex = scaleIndex;
+    } else {
+        return;
+    }
+#ifdef PRINTDEBUG
+    pc.printf(" %f,%d\n\r",scaling, scaleIndex );
+#endif
+    tempInt = (int)toneFreq;
+    sprintf (lcdData,"%4d",tempInt);
+    LCDMessNoDwell(lcdData);
+    return;
+}
+void lightAdjust( float scaling) { // Control brightness of LED
+    float tempDutyFactor;
+    
+    tempDutyFactor = 1.0 - scaling; //LED is a sinking connection                                   // anode is held at 5V
+    led.write(tempDutyFactor); //adjusting duty factor
+    return;
+}
+
+int main(){
+    int tempInt;
+    float tempValue;
+    
+    tonePeriod = 1.0/toneFreq; 
+    soundOut.period(tonePeriod);
+    led.period(tonePeriod);
+    led.write(CHANNELOFF);
+    outPin.write(CHANNELOFF);
+    
+    tempInt = (int)toneFreq;
+    sprintf (lcdData,"%4d",tempInt);
+    LCDMessNoDwell(lcdData);
+   // Start data timer
+    dataTimer.start();
+    dataTimer.reset(); 
+     
+    while (true) {
+        if (dataTimer.read_ms() > DATATIME){ // check to see if enough time has passed
+                                            // to read the touch pad
+            tempValue = tsiScaling.readPercentage();
+            if(tempValue > 0) {
+                // soundOut.write(TONEON); // set duty factor to 50%
+                diatonicAdjust(tempValue);
+                lightAdjust(tempValue);
+            } else { 
+                soundOut.write(TONEOFF); // set dutyfactor to 0%
+                LCDMessNoDwell("SOFF");
+            }       
+            dataTimer.reset();
+        }                 
+    } // while forever
+}// end main
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