Suga koubou / Mbed 2 deprecated MODDMA_LLI_test

GPDMA (Direct Memory Access) and LLI (Link List Item) test see: http://mbed.org/users/okini3939/notebook/dma_jp/

Dependencies:   mbed

main.cpp@0:de79d4a48e63, 2013-09-13 (annotated)

Committer:
okini3939
Date:
Fri Sep 13 14:49:52 2013 +0000
Revision:
0:de79d4a48e63
Child:
1:1a77fa863282
GPDMA (Direct Memory Access) and LLI (Link List Item) test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
okini3939 0:de79d4a48e63 1 #include "mbed.h"
okini3939 0:de79d4a48e63 2 #include "MODDMA.h"
okini3939 0:de79d4a48e63 3
okini3939 0:de79d4a48e63 4 #define LLI_NUM 4
okini3939 0:de79d4a48e63 5
okini3939 0:de79d4a48e63 6 Serial pc(USBTX, USBRX);
okini3939 0:de79d4a48e63 7 DigitalOut myled(LED1);
okini3939 0:de79d4a48e63 8
okini3939 0:de79d4a48e63 9 MODDMA dma;
okini3939 0:de79d4a48e63 10 MODDMA_Config *dmacfg;
okini3939 0:de79d4a48e63 11 MODDMA_LLI *lli[LLI_NUM];
okini3939 0:de79d4a48e63 12 MODDMA::GPDMA_CONNECTION dmacon;
okini3939 0:de79d4a48e63 13 volatile int dmacount = 0;
okini3939 0:de79d4a48e63 14 char dmadata[LLI_NUM][40];
okini3939 0:de79d4a48e63 15 char text[] = "* count, dmadata[*] abcdefg\r\n";
okini3939 0:de79d4a48e63 16
okini3939 0:de79d4a48e63 17 void tc_callback () {
okini3939 0:de79d4a48e63 18 int i;
okini3939 0:de79d4a48e63 19 MODDMA_Config *config = dma.getConfig();
okini3939 0:de79d4a48e63 20
okini3939 0:de79d4a48e63 21 for (i = 0; i < LLI_NUM; i ++) {
okini3939 0:de79d4a48e63 22 dmadata[i][0] = '0' + dmacount;
okini3939 0:de79d4a48e63 23 }
okini3939 0:de79d4a48e63 24 dmacount ++;
okini3939 0:de79d4a48e63 25 if (dmacount >= 10) {
okini3939 0:de79d4a48e63 26 dma.Disable( (MODDMA::CHANNELS)config->channelNum() );
okini3939 0:de79d4a48e63 27 }
okini3939 0:de79d4a48e63 28 /*
okini3939 0:de79d4a48e63 29 i = (dmacount & 1) ? 0 : 1;
okini3939 0:de79d4a48e63 30 if (dmacount < 5) {
okini3939 0:de79d4a48e63 31 dmadata[0][0] = '0' + dmacount;
okini3939 0:de79d4a48e63 32 dmadata[1][0] = '0' + dmacount;
okini3939 0:de79d4a48e63 33 } else {
okini3939 0:de79d4a48e63 34 dma.Disable( (MODDMA::CHANNELS)config->channelNum() );
okini3939 0:de79d4a48e63 35 }
okini3939 0:de79d4a48e63 36 */
okini3939 0:de79d4a48e63 37 // Clear DMA IRQ flags.
okini3939 0:de79d4a48e63 38 if (dma.irqType() == MODDMA::TcIrq) dma.clearTcIrq();
okini3939 0:de79d4a48e63 39 if (dma.irqType() == MODDMA::ErrIrq) dma.clearErrIrq();
okini3939 0:de79d4a48e63 40 }
okini3939 0:de79d4a48e63 41
okini3939 0:de79d4a48e63 42 void err_callback () {
okini3939 0:de79d4a48e63 43 }
okini3939 0:de79d4a48e63 44
okini3939 0:de79d4a48e63 45
okini3939 0:de79d4a48e63 46 int main() {
okini3939 0:de79d4a48e63 47 int i, len;
okini3939 0:de79d4a48e63 48
okini3939 0:de79d4a48e63 49 pc.printf("MODDMA LLI test\r\n");
okini3939 0:de79d4a48e63 50
okini3939 0:de79d4a48e63 51 dmacfg = new MODDMA_Config;
okini3939 0:de79d4a48e63 52 dmacon = MODDMA::UART0_Tx;
okini3939 0:de79d4a48e63 53
okini3939 0:de79d4a48e63 54 len = strlen(text);
okini3939 0:de79d4a48e63 55 for (i = 0; i < LLI_NUM; i ++) {
okini3939 0:de79d4a48e63 56 strcpy(dmadata[i], text);
okini3939 0:de79d4a48e63 57 dmadata[i][17] = '0' + i;
okini3939 0:de79d4a48e63 58
okini3939 0:de79d4a48e63 59 lli[i] = new MODDMA_LLI;
okini3939 0:de79d4a48e63 60 }
okini3939 0:de79d4a48e63 61
okini3939 0:de79d4a48e63 62 dmacfg
okini3939 0:de79d4a48e63 63 ->channelNum ( MODDMA::Channel_0 )
okini3939 0:de79d4a48e63 64 ->srcMemAddr ( (uint32_t)dmadata[0] )
okini3939 0:de79d4a48e63 65 ->dstConn ( dmacon )
okini3939 0:de79d4a48e63 66 ->transferSize ( len )
okini3939 0:de79d4a48e63 67 ->transferType ( MODDMA::m2p )
okini3939 0:de79d4a48e63 68 ->dmaLLI ( (uint32_t)lli[1] )
okini3939 0:de79d4a48e63 69 ->attach_tc ( tc_callback )
okini3939 0:de79d4a48e63 70 ->attach_err ( err_callback )
okini3939 0:de79d4a48e63 71 ; // config end
okini3939 0:de79d4a48e63 72 lli[0]->SrcAddr = (uint32_t)dmadata[0];
okini3939 0:de79d4a48e63 73 lli[0]->DstAddr = (uint32_t)dma.LUTPerAddr(dmacon);
okini3939 0:de79d4a48e63 74 lli[0]->NextLLI = (uint32_t)lli[1];
okini3939 0:de79d4a48e63 75 lli[0]->Control = dma.CxControl_TransferSize((uint32_t)len)
okini3939 0:de79d4a48e63 76 | dma.CxControl_SBSize((uint32_t)dma.LUTPerBurst(dmacon))
okini3939 0:de79d4a48e63 77 | dma.CxControl_DBSize((uint32_t)dma.LUTPerBurst(dmacon))
okini3939 0:de79d4a48e63 78 | dma.CxControl_SWidth((uint32_t)dma.LUTPerWid(dmacon))
okini3939 0:de79d4a48e63 79 | dma.CxControl_DWidth((uint32_t)dma.LUTPerWid(dmacon))
okini3939 0:de79d4a48e63 80 | dma.CxControl_SI()
okini3939 0:de79d4a48e63 81 | dma.CxControl_I();
okini3939 0:de79d4a48e63 82 for (i = 1; i < LLI_NUM; i ++) {
okini3939 0:de79d4a48e63 83 lli[i]->SrcAddr = (uint32_t)dmadata[i];
okini3939 0:de79d4a48e63 84 lli[i]->DstAddr = lli[0]->DstAddr;
okini3939 0:de79d4a48e63 85 lli[i]->NextLLI = (uint32_t)lli[i < LLI_NUM - 1 ? i + 1 : 0];
okini3939 0:de79d4a48e63 86 lli[i]->Control = lli[0]->Control;
okini3939 0:de79d4a48e63 87 }
okini3939 0:de79d4a48e63 88
okini3939 0:de79d4a48e63 89 if (dma.Setup( dmacfg )) {
okini3939 0:de79d4a48e63 90 // _ssp->FCR = (1<<3); // DMA Mode
okini3939 0:de79d4a48e63 91 dma.Enable( dmacfg );
okini3939 0:de79d4a48e63 92 }
okini3939 0:de79d4a48e63 93
okini3939 0:de79d4a48e63 94 wait(3);
okini3939 0:de79d4a48e63 95 pc.printf("end\r\n");
okini3939 0:de79d4a48e63 96
okini3939 0:de79d4a48e63 97 return 0;
okini3939 0:de79d4a48e63 98 }