Jonne Valola
PokittoLib is the library needed for programming the Pokitto DIY game console (www.pokitto.com)
Dependents: YATTT sd_map_test cPong SnowDemo ... more
PokittoLib
Library for programming Pokitto hardware
How to Use
- Import this library to online compiler (see button "import" on the right hand side
- DO NOT import mbed-src anymore, a better version is now included inside PokittoLib
- Change My_settings.h according to your project
- Start coding!
Diff: POKITTO_HW/HWSound.cpp
- Revision:
- 67:068fa6345036
- Parent:
- 52:c04087025cab
--- a/POKITTO_HW/HWSound.cpp Sat Mar 23 20:03:34 2019 +0000
+++ b/POKITTO_HW/HWSound.cpp Thu Apr 04 17:07:28 2019 +0000
@@ -50,15 +50,8 @@
Pokitto::Sound __shw;
-#ifdef XPERIMENTAL
-DigitalOut e4(EXT4);
-e4=0;
-#endif
-
using namespace Pokitto;
-
-
#ifndef POK_SIM
#if POK_ENABLE_SOUND
pwmout_t* obj = &audiopwm;
@@ -67,7 +60,18 @@
/** Sound Variables **/
#if (POK_STREAMING_MUSIC > 0)
+
+#if POK_HIGH_RAM == HIGH_RAM_MUSIC
+unsigned char *buffers[4] = {
+ (unsigned char *) 0x20000000,
+ (unsigned char *) 0x20000400,
+ (unsigned char *) 0x20004000,
+ (unsigned char *) 0x20004400
+};
+#else
unsigned char buffers[4][BUFFER_SIZE];
+#endif
+
volatile int currentBuffer = 0, oldBuffer = 0;
volatile int bufindex = 0, vol=1;
volatile unsigned char * currentPtr;
@@ -256,15 +260,24 @@
#endif
}
+void Pokitto::soundInit() {
+ soundInit(false);
+}
+
/** SOUND INIT **/
-void Pokitto::soundInit() {
+void Pokitto::soundInit(uint8_t reinit) {
+ #ifdef XPERIMENTAL
+ mbed::DigitalOut expr4(EXT4);
+ expr4=0;
+ #endif
#if POK_ENABLE_SOUND > 0
uint32_t timerFreq;
#if POK_USE_PWM
-
+ if (!reinit) {
pwmout_init(&audiopwm,POK_AUD_PIN);
pwmout_period_us(&audiopwm,POK_AUD_PWM_US); //was 31us
pwmout_write(&audiopwm,0.1f);
+ }
#endif
//#if POK_GBSOUND > 0
@@ -385,10 +398,23 @@
#else
streamstep = 1;
#endif // POK_STREAMFREQ_HALVE
+ #ifndef PROJ_SDFS_STREAMING
+ streamon=1; // force enable stream
+ #endif
streamstep &= streamon; // streamon is used to toggle SD music streaming on and off
if (streamstep) {
output = (*currentPtr++);
- if(streamvol && streamon) {
+ if( Pokitto::Sound::sfxDataPtr != Pokitto::Sound::sfxEndPtr ){
+ #ifdef PROJ_SDFS_STREAMING
+ int32_t s = (int32_t(output) + int32_t(*Pokitto::Sound::sfxDataPtr++)) - 128;
+ #else
+ int32_t s = (127 + int32_t(*Pokitto::Sound::sfxDataPtr++)) - 128;
+ #endif
+ if( s < 0 ) s = 0;
+ else if( s > 255 ) s = 255;
+ output = s;
+ }
+ if(streamvol && streamon) {
output >>= 3-streamvol;
streambyte = output;
} else {
@@ -414,10 +440,18 @@
updatePlayback();
}
/** oscillators update **/
- osc1.count += osc1.cinc + (osc1.pitchbend >> 4); // counts to 65535 and overflows to zero WAS 8 !
- osc2.count += osc2.cinc + (osc2.pitchbend >> 4); // counts to 65535 and overflows to zero
- osc3.count += osc3.cinc + (osc3.pitchbend >> 4); // counts to 65535 and overflows to zero
+ osc1.count += osc1.cinc + (osc1.pitchbend); // counts to 65535 and overflows to zero WAS 8 !
+ osc2.count += osc2.cinc + (osc2.pitchbend); // counts to 65535 and overflows to zero
+ osc3.count += osc3.cinc + (osc3.pitchbend); // counts to 65535 and overflows to zero
+ #if POK_ALT_MIXING > 0 // heaviest cpu load, recalculate envelopes on each cycle
+ uint32_t o = 0;
+ Marr[3]();
+ Marr[2]();
+ Marr[1]();
+ if (tick==0) Marr[0]();
+ #else
Marr[tick](); // call mixing function
+ #endif // ALT_MIXING
--tick;
/** mixing oscillator output **/