Lucy Lenhardt / wave_player_pwm_and_dac

made it do pwmout and dacout

Dependents:   4180_FDP_ADC

Fork of wave_player by Steve Ravet

Files at this revision

API Documentation at this revision

Revision 2:da5d90e12f27, committed 2014-12-05

Comitter:
lenhardt
Date:
Fri Dec 05 02:31:00 2014 +0000
Parent:
1:acc3e18e77ad
Commit message:
overloaded play function to have pwmout and dacout

Changed in this revision

wave_player.cpp Show annotated file Show diff for this revision Revisions of this file
wave_player.h Show annotated file Show diff for this revision Revisions of this file 
--- a/wave_player.cpp	Tue Jan 18 03:57:27 2011 +0000
+++ b/wave_player.cpp	Fri Dec 05 02:31:00 2014 +0000
@@ -18,10 +18,12 @@
 
 //-----------------------------------------------------------------------------
 // constructor -- accepts an mbed pin to use for AnalogOut.  Only p18 will work
-wave_player::wave_player(AnalogOut *_dac)
+wave_player::wave_player(AnalogOut *_dac, PwmOut *_pwm)
 {
+  wave_PWM = _pwm;
   wave_DAC=_dac;
   wave_DAC->write_u16(32768);        //DAC is 0-3.3V, so idles at ~1.6V
+  *wave_PWM = 32768;
   verbosity=0;
 }
 
@@ -205,7 +207,7 @@
   printf("ISR rdptr %d got %u\n",DAC_rptr,DAC_fifo[DAC_rptr]);
 #endif
     wave_DAC->write_u16(DAC_fifo[DAC_rptr]);
+    wave_PWM->write(float(DAC_fifo[DAC_rptr]/65536.0));
     DAC_rptr=(DAC_rptr+1) & 0xff;
   }
 }
-

--- a/wave_player.h	Tue Jan 18 03:57:27 2011 +0000
+++ b/wave_player.h	Fri Dec 05 02:31:00 2014 +0000
@@ -37,7 +37,7 @@
  *
  * @param _dac pointer to an AnalogOut object to which the samples are sent.
  */
-wave_player(AnalogOut *_dac);
+wave_player(AnalogOut *_dac, PwmOut *_pwm);
 
 /** the player function.
  *
@@ -62,6 +62,7 @@
 void dac_out(void);
 int verbosity;
 AnalogOut *wave_DAC;
+PwmOut *wave_PWM;
 Ticker tick;
 unsigned short DAC_fifo[256];
 short DAC_wptr;
@@ -69,4 +70,3 @@
 short DAC_on;
 };
 
-