Hi,
In my design, the McASP is connected to a 6-channel ADC through a McASP.
I have configured the McASP in synchronous TDM mode and wanted to configure
EDMA to transfer the data received from the McASP port to a variable in CE0 space.
The CE0 space is connected to a FPGA. And there is code in FPGA which takes the EMIF signals
and acts as a asynchronous SRAM.
This is how I have configured my EDMA port.
/* Configure EDMA parameters */
EDMA_configArgs(
hEdmaAREVT,
EDMA_OPT_RMK(
EDMA_OPT_PRI_HIGH,
EDMA_OPT_ESIZE_16BIT, /* Element size 16 bits */
EDMA_OPT_2DS_NO,
EDMA_OPT_SUM_NONE,
EDMA_OPT_2DD_NO,
EDMA_OPT_DUM_INC,
EDMA_OPT_TCINT_YES, /* Enable Transfer Complete Interrupt */
EDMA_OPT_TCC_OF(edmaChaAREVT),
EDMA_OPT_LINK_NO, /* Enable linking to NULL table */
EDMA_OPT_FS_YES
),
EDMA_SRC_RMK(MCASP_getRbufAddr(hMcasp)),
EDMA_CNT_OF(0x00000006),/* no. of elements */
EDMA_DST_RMK((int32_t)RxData),
EDMA_IDX_OF(0x00000000),
EDMA_RLD_OF(0x00060000)
);
/* Enable EDMA interrupts */
EDMA_intDisable(edmaChaAREVT);
EDMA_intClear(edmaChaAREVT);
EDMA_intEnable(edmaChaAREVT);
/* enable EDMA channels */
EDMA_enableChannel(hEdmaAREVT);
The main aim is to transfer the 6 TDM data words from the McASP to the CE0 locations continuously.
But in the CE0 space, I am able to receive only one word. while I want to receive all the 6 data words
in contiguous address locations (see parameter INC in OPT register, DUM bit).
Could somebody please suggest if there is something I am missing in the EDMA configuration. Please guide.
Thanks,
Aditi.
