// Disable I2S TX with PDMA function
void StopPlay(void)
{
I2S_DISABLE_TXDMA(I2S1);
I2S_DISABLE_TX(I2S1);
PDMA_Close();
// disable sound output
PI3 = 1;
audioInfo.mp3Playing = 0;
printf("Stop ...\n");
}
/*---------------------------------------------------------------------------------------------------------*/
int PDMA_Example(void)
{
uint32_t u32EndSrc, u32EndDst;
/* Init System, IP clock and multi-function I/O */
SYS_Init(); //In the end of SYS_Init() will issue SYS_LockReg() to lock protected register. If user want to write protected register, please issue SYS_UnlockReg() to unlock protected register.
/* Init UART for printf */
UART0_Init();
printf("\n\nCPU @ %dHz\n", SystemCoreClock);
printf("+------------------------------------------------------+ \n");
printf("| NUC400 PDMA Memory to Memory Driver Sample Code | \n");
printf("+------------------------------------------------------+ \n");
/* Open Channel 2 */
PDMA_Open(1 << 2);
PDMA_SetTransferCnt(2, PDMA_WIDTH_32, PDMA_TEST_LENGTH);
u32EndSrc = (uint32_t)SrcArray + PDMA_TEST_LENGTH * 4;
u32EndDst = (uint32_t)DestArray + PDMA_TEST_LENGTH * 4;
PDMA_SetTransferAddr(2, u32EndSrc, PDMA_SAR_INC, u32EndDst, PDMA_DAR_INC);
PDMA_SetTransferMode(2, PDMA_MEM, 0, 0);
PDMA_SetBurstType(2, PDMA_REQ_BURST, PDMA_BURST_4);
PDMA_SetTimeOut(2, 0, 0x5);
PDMA_EnableInt(2, 0);
NVIC_EnableIRQ(PDMA_IRQn);
u32IsTestOver = 0;
PDMA_Trigger(2);
while(u32IsTestOver == 0);
if (u32IsTestOver == 1)
printf("test done...\n");
else if (u32IsTestOver == 2)
printf("target abort...\n");
else if (u32IsTestOver == 3)
printf("timeout...\n");
PDMA_Close();
}
