Diff: main.cpp

Revision:

1:3c1ad60f5cf3

Parent:

0:b847a1ffc64f

Child:

2:8008da2bb047

diff -r b847a1ffc64f -r 3c1ad60f5cf3 main.cpp
--- a/main.cpp	Mon Apr 13 14:01:48 2020 +0000
+++ b/main.cpp	Sat Apr 25 18:55:54 2020 +0000
@@ -1,8 +1,7 @@
 #include "mbed.h"
 //#include "SDFileSystem"
-//#include "FastIO.h"
-#include "MODDMA.h"
-
+#include "FastIO.h"
+//#include "MODDMA.h"
 
 void pllfeed() {
     __disable_irq();
@@ -37,7 +36,7 @@
 DigitalOut led1(LED1);
 DigitalOut led2(LED2);
 
-MODDMA dma;
+//MODDMA dma;
 
 void TC0_callback(void) {
     led1 = 1;
@@ -45,47 +44,60 @@
 
 Serial test(p13, p14);
 
+FastOut<p21> pixel;
+void pixelout(void) {
+    pixel = 1;
+    wait(0.1);
+    pixel=0;
+    wait(0.1);
+}
+
 int main() {
     setpll();
     pllfeed();
-    
-    char s[] = "I2S CCLK/4 Verification Test";
+    pixelout();
+    //char s[] = "I2S CCLK/4 Verification Test";
     
     //turn on i2s periph
-    LPC_SC -> PCONP |= (1 << 27);
+    //LPC_SC -> PCONP |= (1 << 27);
+    //set PCLK_peripheral = CCLK/2 so that serial tx CCLK/4
+    //LPC_SC -> PCLKSEL1 |= (2 << 22);
+    //assign clock pin and probe
     
-    //set PCLK_peripheral = CCLK/2; such that bitstream is CCLK/4
-    LPC_SC -> PCLKSEL1 |= (2 << 22);
+    //LPC_I2S -> I2STXRATE |= (4 | (1 << 8));
+    
     
     //monaural format; master mode
-    LPC_I2S -> I2SDAO |= (0x8);
+    //LPC_I2S -> I2SDAO |= (0x8);
     
     //connect i2s channel 0 tx to dma
-    LPC_I2S -> I2SDMA1 |= (0x80002);
+    //LPC_I2S -> I2SDMA1 |= (0x70002);
     
     //select p5 pin for i2s tx
-    LPC_PINCON -> PINSEL0 |= (1 << 18);
+    //LPC_PINCON -> PINSEL0 |= (1 << 18);
+    //LPC_PINCON -> PINSEL0 |= (1 << 14); 
 
     
-    MODDMA_Config *config = new MODDMA_Config;
-    config
-     ->channelNum    ( MODDMA::Channel_0 )
-     ->srcMemAddr    ( (uint32_t) &s )
-     ->dstMemAddr    ( 0 )
-     ->transferSize  ( sizeof(s) )
-     ->transferType  ( MODDMA::m2p )
-     ->transferWidth ( 8 )
-     ->srcConn       ( 0 )
-     ->dstConn       ( MODDMA::I2S_Channel_0 )
-     ->dmaLLI        ( 0 )
-     ->attach_tc     ( &TC0_callback )
-    ;
+    //MODDMA_Config *config = new MODDMA_Config;
+    //config
+    // ->channelNum    ( MODDMA::Channel_0 )
+    // ->srcMemAddr    ( (uint32_t) &s )
+    // ->dstMemAddr    ( LPC_I2S -> I2STXFIFO )
+    // ->transferSize  ( sizeof(s) )
+    // ->transferType  ( MODDMA::m2p )
+    // ->transferWidth ( 8 )
+    // ->srcConn       ( 0 )
+    // ->dstConn       ( MODDMA::I2S_Channel_0 )
+    // ->dmaLLI        ( 0 )
+    // ->attach_tc     ( &TC0_callback )
+    //;
     
-    dma.Setup(config);
-    dma.Enable(config);
+    //dma.Setup(config);
+    //dma.Enable(config);
     while(1) {
-        printf("%d ;", LPC_I2S -> I2SSTATE);
-        wait(0.5);
+        //printf("%d ;", LPC_I2S -> I2SSTATE);
+        //wait(0.5);
+        pixelout();
     }
 }