SPORT Programming Examples
5-84 ADSP-21368 SHARC Processor Hardware Reference
/* Default Buffer Length */
#define BUFSIZE 10
.SECTION/DM seg_dmda;
/*Transmit buffer*/
.var tx_buf5a[BUFSIZE] = 0x11111111,
0x22222222,
0x33333333,
0x44444444,
0x55555555,
0x66666666,
0x77777777,
0x88888888,
0x99999999,
0xAAAAAAAA;
/*Receive buffer*/
.var rx_buf4a[BUFSIZE];
/* Main code section */
.global _main;
.SECTION/PM seg_pmco;
_main:
/* SPORT Loopback: Use SPORT4 as RX & SPORT5 as TX */
/* initially clear SPORT control register */
r0 = 0x00000000;
dm(SPCTL4) = r0;
dm(SPCTL5) = r0;
dm(SPMCTL4) = r0;
SPORT_DMA_setup:
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