Diff: SynthTest.cpp

Revision:

2:91c41852a646

Parent:

0:e0bd5da25882

Child:

5:09131ded851b

--- a/SynthTest.cpp	Fri Jan 05 02:41:07 2018 +0000
+++ b/SynthTest.cpp	Tue Jan 30 10:42:21 2018 +0000
@@ -1,32 +1,177 @@
 #include "Pokitto.h"
 #include "Synth.h"
+#include "dma_11u6x.h"
 
 Pokitto::Core game;
 Pokitto::Display disp;
 Pokitto::Sound snd;
 Pokitto::Buttons btn;
 
-int tonefreq=33;
+uint8_t mysine[] = {
+0x80,0x83,0x86,0x89,0x8c,0x8f,0x92,0x95,
+0x98,0x9b,0x9e,0xa2,0xa5,0xa7,0xaa,0xad,
+0xb0,0xb3,0xb6,0xb9,0xbc,0xbe,0xc1,0xc4,
+0xc6,0xc9,0xcb,0xce,0xd0,0xd3,0xd5,0xd7,
+0xda,0xdc,0xde,0xe0,0xe2,0xe4,0xe6,0xe8,
+0xea,0xeb,0xed,0xee,0xf0,0xf1,0xf3,0xf4,
+0xf5,0xf6,0xf8,0xf9,0xfa,0xfa,0xfb,0xfc,
+0xfd,0xfd,0xfe,0xfe,0xfe,0xff,0xff,0xff,
+0xff,0xff,0xff,0xff,0xfe,0xfe,0xfe,0xfd,
+0xfd,0xfc,0xfb,0xfa,0xfa,0xf9,0xf8,0xf6,
+0xf5,0xf4,0xf3,0xf1,0xf0,0xee,0xed,0xeb,
+0xea,0xe8,0xe6,0xe4,0xe2,0xe0,0xde,0xdc,
+0xda,0xd7,0xd5,0xd3,0xd0,0xce,0xcb,0xc9,
+0xc6,0xc4,0xc1,0xbe,0xbc,0xb9,0xb6,0xb3,
+0xb0,0xad,0xaa,0xa7,0xa5,0xa2,0x9e,0x9b,
+0x98,0x95,0x92,0x8f,0x8c,0x89,0x86,0x83,
+0x80,0x7c,0x79,0x76,0x73,0x70,0x6d,0x6a,
+0x67,0x64,0x61,0x5d,0x5a,0x58,0x55,0x52,
+0x4f,0x4c,0x49,0x46,0x43,0x41,0x3e,0x3b,
+0x39,0x36,0x34,0x31,0x2f,0x2c,0x2a,0x28,
+0x25,0x23,0x21,0x1f,0x1d,0x1b,0x19,0x17,
+0x15,0x14,0x12,0x11,0xf,0xe,0xc,0xb,
+0xa,0x9,0x7,0x6,0x5,0x5,0x4,0x3,
+0x2,0x2,0x1,0x1,0x1,0x0,0x0,0x0,
+0x0,0x0,0x0,0x0,0x1,0x1,0x1,0x2,
+0x2,0x3,0x4,0x5,0x5,0x6,0x7,0x9,
+0xa,0xb,0xc,0xe,0xf,0x11,0x12,0x14,
+0x15,0x17,0x19,0x1b,0x1d,0x1f,0x21,0x23,
+0x25,0x28,0x2a,0x2c,0x2f,0x31,0x34,0x36,
+0x39,0x3b,0x3e,0x41,0x43,0x46,0x49,0x4c,
+0x4f,0x52,0x55,0x58,0x5a,0x5d,0x61,0x64,
+0x67,0x6a,0x6d,0x70,0x73,0x76,0x79,0x7c
+};
+
+int tonefreq=46;
 uint8_t amplitude = 255;//127;
-uint8_t wavetype = 1, arpmode=0;
+uint8_t wavetype = 1, arpmode=1;
 uint32_t changed = 1;
 char notestr[6];
 uint8_t sbindx=0,sbx=0,prevy=0;
 
+/* Size of the source and destination buffers in 32-bit words.
+   Allowable values  = 126, 256, 512, or 1024 */
+#define SIZE_BUFFERS            (256)
+
+/* Source and destination buffers */
+//uint32_t src[SIZE_BUFFERS], dst[SIZE_BUFFERS];
+uint8_t src[SIZE_BUFFERS], dst[SIZE_BUFFERS];
+
+/* DMA completion flag */
+static volatile bool dmaDone;
+
+// IRQ handlers have to be extern "C" in mbed!!!!!!!
+extern "C" void DMA_IRQHandler(void)
+{
+	/* Rrror interrupt on channel 0? */
+	if ((Chip_DMA_GetIntStatus(LPC_DMA) & DMA_INTSTAT_ACTIVEERRINT) != 0) {
+		/* This shouldn't happen for this simple DMA example, so set the LED
+		   to indicate an error occurred. This is the correct method to clear
+		   an abort. */
+		Chip_DMA_DisableChannel(LPC_DMA, DMA_CH0);
+		while ((Chip_DMA_GetBusyChannels(LPC_DMA) & (1 << DMA_CH0)) != 0) {}
+		Chip_DMA_AbortChannel(LPC_DMA, DMA_CH0);
+		Chip_DMA_ClearErrorIntChannel(LPC_DMA, DMA_CH0);
+		Chip_DMA_EnableChannel(LPC_DMA, DMA_CH0);
+		//Board_LED_Set(0, true);
+	}
+
+	/* Clear DMA interrupt for the channel */
+	Chip_DMA_ClearActiveIntAChannel(LPC_DMA, DMA_CH0);
+
+	dmaDone = true;
+}
+
+void modifysrc(int j) {
+    for (uint32_t i=0; i<SIZE_BUFFERS;i++) {
+            src[i] = random(0,255);
+    }
+}
+
 int main()
 {
+    modifysrc(0);
     game.begin();
+    /* DMA part */
+    DMA_CHDESC_T dmaDesc;
+	int i;
+
+	uint32_t startTime, ticks[3];
+    /* DMA initialization - enable DMA clocking and reset DMA if needed */
+	Chip_DMA_Init(LPC_DMA);
+    /* Enable DMA controller and use driver provided DMA table for current descriptors */
+	Chip_DMA_Enable(LPC_DMA);
+	Chip_DMA_SetSRAMBase(LPC_DMA, DMA_ADDR(Chip_DMA_Table));
+	/* Setup channel 0 for the following configuration:
+	   - High channel priority
+	   - Interrupt A fires on descriptor completion */
+	Chip_DMA_EnableChannel(LPC_DMA, DMA_CH0);
+	Chip_DMA_EnableIntChannel(LPC_DMA, DMA_CH0);
+	Chip_DMA_SetupChannelConfig(LPC_DMA, DMA_CH0,
+								(DMA_CFG_HWTRIGEN | DMA_CFG_TRIGTYPE_EDGE | DMA_CFG_TRIGPOL_HIGH |
+								 DMA_CFG_BURSTPOWER_128 | DMA_CFG_CHPRIORITY(0)));
+
+    /* DMA descriptor for memory to memory operation - note that addresses must
+	   be the END address for src and destination, not the starting address.
+	     DMA operations moves from end to start. */
+	//dmaDesc.source = DMA_ADDR(&src[SIZE_BUFFERS - 1]) + 3;
+	//dmaDesc.dest = DMA_ADDR(&dst[SIZE_BUFFERS - 1]) + 3;
+	dmaDesc.source = DMA_ADDR(&src[SIZE_BUFFERS - 1]);
+	//dmaDesc.dest = DMA_ADDR(&dst[SIZE_BUFFERS - 1]);
+	dmaDesc.dest = DMA_ADDR(&game.display.screenbuffer[SIZE_BUFFERS - 1]);
+	dmaDesc.next = DMA_ADDR(0);
+
+	/* Enable DMA interrupt */
+	uint32_t rtr = NVIC->ISER[0];
+	NVIC_EnableIRQ(DMA_IRQn);
+
+    /* Reset timer and perform a bunch memory to memory moves with DMA */
+
+	for (i = 0; i < 100; i++) {
+		dmaDone = false;
+
+		//modifyData(src, dst, SIZE_BUFFERS);
+        modifysrc(i);
+
+		/* Setup transfer descriptor and validate it */
+		Chip_DMA_SetupTranChannel(LPC_DMA, DMA_CH0, &dmaDesc);
+		Chip_DMA_SetValidChannel(LPC_DMA, DMA_CH0);
+
+		/* Setup data transfer and software trigger in same call */
+		/*Chip_DMA_SetupChannelTransfer(LPC_DMA, DMA_CH0,
+									  (DMA_XFERCFG_CFGVALID | DMA_XFERCFG_SETINTA | DMA_XFERCFG_SWTRIG |
+									   DMA_XFERCFG_WIDTH_32 | DMA_XFERCFG_SRCINC_1 | DMA_XFERCFG_DSTINC_1 |
+									   DMA_XFERCFG_XFERCOUNT(SIZE_BUFFERS)));*/
+        Chip_DMA_SetupChannelTransfer(LPC_DMA, DMA_CH0,
+									  (DMA_XFERCFG_CFGVALID | DMA_XFERCFG_SETINTA | DMA_XFERCFG_SWTRIG |
+									   DMA_XFERCFG_WIDTH_8 | DMA_XFERCFG_SRCINC_1 | DMA_XFERCFG_DSTINC_0 |
+									   DMA_XFERCFG_XFERCOUNT(SIZE_BUFFERS)));
+		/* Wait for DMA completion */
+		while (dmaDone == false) {
+			if (game.update()) {
+                game.display.color=3;
+                game.display.print("Hello! ");
+			}
+
+		}
+
+	}
+
+
     snd.setVolume(snd.getMaxVol()); // volume to max level depending on headset/speaker safety level
     disp.persistence = true;
     disp.color=wavetype+1;
     disp.bgcolor=0;
     uint8_t sbindx=0;
     int oldvol=0;
-    int linecenter = (disp.height/4)-10; // center oscilloscope line vertically
+    int linecenter = (disp.height/4); // center oscilloscope line vertically
+    linecenter *=2;
+    linecenter += 0;
     snd.ampEnable(1);
     snd.playTone(1,tonefreq,amplitude,wavetype,arpmode);
+    //snd.playTone(1,100,255,0);
     // want to have 2 oscillators 1 octave apart ?
-    // snd.playTone(2,tonefreq+12,amplitude,wavetype,arpmode);
+    snd.playTone(2,tonefreq+12,amplitude,wavetype,arpmode);
 
     disp.clear();
     disp.print("Frq:");
@@ -54,6 +199,8 @@
     disp.println((int)snd.getVolume());
     disp.lcdRefresh(disp.screenbuffer);
 
+
+
     while (game.isRunning()) {
 
         #ifdef POK_SIM
@@ -62,6 +209,37 @@
             #define DEBOU 256
         #endif
 
+        /*
+        uint32_t* j = (uint32_t*)0x5000e204;
+        *j = 0xab;//(0x1F*(uint32_t)val++)>>8;
+
+        Chip_DMA_SetupTranChannel(LPC_DMA, DMA_CH0, &dmaDesc);
+		Chip_DMA_SetValidChannel(LPC_DMA, DMA_CH0);
+		dmaDesc.source = DMA_ADDR(&mysine[255]);
+            dmaDesc.dest = DMA_ADDR(j);
+            dmaDesc.next = DMA_ADDR(0);*/
+
+		/*if (!val) {
+            dmaDesc.source = DMA_ADDR(&mysine[255]);
+            dmaDesc.dest = DMA_ADDR(&soundbuf[255]);
+            dmaDesc.next = DMA_ADDR(0);
+		} else {
+            dmaDesc.source = DMA_ADDR(&src[255]);
+            dmaDesc.dest = DMA_ADDR(&soundbuf[255]);
+            dmaDesc.next = DMA_ADDR(0);
+		}*/
+		/*
+		Chip_DMA_SetupChannelTransfer(LPC_DMA, DMA_CH0,
+									  (DMA_XFERCFG_CFGVALID | DMA_XFERCFG_SETINTA | DMA_XFERCFG_SWTRIG |
+									   DMA_XFERCFG_WIDTH_8 | DMA_XFERCFG_SRCINC_1 | DMA_XFERCFG_DSTINC_0 |
+									   DMA_XFERCFG_XFERCOUNT(255)));*/
+
+		//0x1f*
+		//val=1-val;
+		//fill buffer
+
+
+
         if (changed == 0) {
             if(btn.upBtn()) { amplitude++; changed = DEBOU; }
             if(btn.downBtn()) { amplitude--; changed = DEBOU; }
@@ -103,14 +281,14 @@
                     snd.playTone(1,tonefreq,amplitude,wavetype,arpmode);
                     oldvol = (int) snd.getVolume();
                     // want to have 2 oscillators 1 octave apart ?
-                    // snd.playTone(2,tonefreq+12,amplitude,wavetype,arpmode);
+                    snd.playTone(2,tonefreq+12,amplitude,wavetype,arpmode);
             }
         } else changed--;
         disp.color=0;
         disp.drawColumn(sbx,38,disp.height);
         disp.color=wavetype+1;
         uint8_t tindex = sbindx*2;
-        int16_t y = linecenter + (((int)128-(soundbuf[tindex]))>>1);
+        int16_t y = linecenter + (((int)128-(soundbuf[tindex]))>>2);
         disp.drawLine(sbx-1,prevy,sbx,y);
         game.update();
         disp.color=0;
@@ -121,6 +299,3 @@
     return 0; // good manners!
 }
 
-
-
-