My TOF camera works well with CX3(CYS3065) on PC. But in embedded system it does not work well, reporting DMA_RESET_EVENT.And I study the problem,finding that CyU3PDmaMultiChannelCommitBuffer() report error CY_U3P_ERROR_INVALID_SEQUENCE. I know the reason is that the host consumes the data at a lower speed than the producer. So I want to increase the DMA buffer size.
dmaCfg.size = CX3_UVC_STREAM_BUF_SIZE; //0x8FD0
dmaCfg.count = CX3_UVC_STREAM_BUF_COUNT; //3
dmaCfg.validSckCount = CX3_UVC_SOCKET_COUNT;
dmaCfg.prodSckId[0] = CX3_PRODUCER_PPORT_SOCKET_0;
dmaCfg.prodSckId[1] = CX3_PRODUCER_PPORT_SOCKET_1;
dmaCfg.consSckId[0] = CX3_EP_VIDEO_CONS_SOCKET;
dmaCfg.dmaMode = CY_U3P_DMA_MODE_BYTE;
dmaCfg.notification = CY_U3P_DMA_CB_PROD_EVENT | CY_U3P_DMA_CB_CONS_EVENT;
dmaCfg.cb = CyCx3UvcAppDmaCallback;
dmaCfg.prodHeader = CX3_UVC_PROD_HEADER;
dmaCfg.prodFooter = CX3_UVC_PROD_FOOTER;
dmaCfg.consHeader = 0;
dmaCfg.prodAvailCount = 0;
status = CyU3PDmaMultiChannelCreate (&glChHandleUVCStream,
CY_U3P_DMA_TYPE_MANUAL_MANY_TO_ONE , &dmaCfg);
if (status != CY_U3P_SUCCESS)
{
CyU3PDebugPrint (4, "\n\rAppInit:DmaMultiChannelCreate Err = 0x%x", status);
}
I increase the CX3_UVC_STREAM_BUF_SIZE to 0x9FD0(mutiplier of 16 bytes)， firmware reports CY_U3P_ERROR_MEMORY_ERROR in CyU3PDmaMultiChannelCreate app initialization. If I increase the CX3_UVC_STREAM_BUF_COUNT to 4, also reporting the same error in initialization.
How can I do to increase the DMA buffer size?
