How to send data to the DMA channel with auto mode  in the fireware?

[waxi_1305956]

Hi:

   

 I use the FX3 to connect to a FPGA,i use the ‘sync_slave_fifo_2bit’GPIF project to communicate with FPGA.The dma channel is set usb_socket1 to the p_port_socket_1,it can be tansfer data from PC to FPGA,but i want to transfer somedata to the DMA channeel in the fireware and whitnot the PC.