Diff: MODDMA/example1.h

Revision:

2:a3e0f7f37ac9

diff -r a7b1803dfa44 -r a3e0f7f37ac9 MODDMA/example1.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MODDMA/example1.h	Wed Dec 05 07:56:09 2012 +0000
@@ -0,0 +1,89 @@
+#include "mbed.h"
+#include "MODDMA.h"
+#include "MODSERIAL.h"
+
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+MODDMA dma;
+MODSERIAL pc(USBTX, USBRX);
+
+// Function prototypes for IRQ callbacks.
+// See definitions following main() below.
+void dmaTCCallback(void);
+void dmaERRCallback(void);
+void TC0_callback(void);
+void ERR0_callback(void);
+
+int main() {
+    char s[] = "**DMA** ABCDEFGHIJKLMNOPQRSTUVWXYZ **DMA**";
+    
+    pc.baud(PC_BAUD);
+    
+    dma.attach_tc( &dmaTCCallback );
+    dma.attach_err( &dmaERRCallback );
+    
+    MODDMA_Config *config = new MODDMA_Config;
+    config
+     ->channelNum    ( MODDMA::Channel_0 )
+     ->srcMemAddr    ( (uint32_t) &s )
+     ->dstMemAddr    ( 0 )
+     ->transferSize  ( sizeof(s) )
+     ->transferType  ( MODDMA::m2p )
+     ->transferWidth ( 0 )
+     ->srcConn       ( 0 )
+     ->dstConn       ( MODDMA::UART0_Tx )
+     ->dmaLLI        ( 0 )
+     ->attach_tc     ( &TC0_callback )
+     ->attach_err    ( &ERR0_callback )
+    ; // config end
+    
+    // Setup the configuration.
+    dma.Setup(config);
+    
+    //dma.Enable( MODDMA::Channel_0 );
+    //dma.Enable( config->channelNum() );
+    dma.Enable( config );
+    
+    while (1) {
+        led1 = !led1;
+        wait(0.25);        
+    }
+}
+
+// Main controller TC IRQ callback
+void dmaTCCallback(void) {
+    led2 = 1;
+}
+
+// Main controller ERR IRQ callback
+void dmaERRCallback(void) {
+    error("Oh no! My Mbed exploded! :( Only kidding, find the problem");
+}
+
+// Configuration callback on TC
+void TC0_callback(void) {
+    MODDMA_Config *config = dma.getConfig();
+    dma.haltAndWaitChannelComplete( (MODDMA::CHANNELS)config->channelNum());
+    dma.Disable( (MODDMA::CHANNELS)config->channelNum() );
+    
+    // Configurations have two IRQ callbacks for TC and Err so you 
+    // know which you are processing. However, if you want to use 
+    // a single callback function you can tell what type of IRQ 
+    // is being processed thus:-
+    if (dma.irqType() == MODDMA::TcIrq)  {
+        led3 = 1;
+        dma.clearTcIrq();
+    }
+    if (dma.irqType() == MODDMA::ErrIrq) {
+        led4 = 1;
+        dma.clearErrIrq();
+    }
+}
+
+// Configuration cakllback on Error
+void ERR0_callback(void) {
+    error("Oh no! My Mbed exploded! :( Only kidding, find the problem");
+}
+