Waijung 2 User Guide

Design overview

AXI stream block appearance in a Simulink model,

AXI stream setup block

AXI stream write block

AXI stream read block

AXI stream block mask overview,

AXI stream setup block

AXI stream write block

AXI stream read block

AXI Stream block output interfaces,

AXI stream setup block

 

AXI stream write block

AXI stream read block

 

AXI Stream block input interfaces,

AXI stream write block

 

AXI stream block behavior

AXI stream block consists with three modes; Setup , write and read. It uses the Xilinx AXI DMA Driver to setup, write and read the AXI Stream data through the AXI DMA. This should be configured using Vivado Design Suite in the design stage. AXI DMA IP(s) should be added and configure accordingly.

•Poll mode

a.Scatter gather mode is not supported. Only the simple mode is supported (disable Scatter Gather mode in AXI DMA IP)

b.The AXI Stream IP should be connected through AXI DMA IP

•Interrupt mode

a.Scatter gather mode is not supported. Only the simple mode is supported (disable Scatter Gather mode in AXI DMA IP)

b.The AXI Stream IP should be connected through AXI DMA IP

c.To support interrupt, mm2s_introut and s2mm_introut should be connected to IRQ_F2P interrupt port using the Concat IP. Before that, IRQ_F2P interrupt port should be enabled in the ZYNQ Processing System IP

Note: For more information on Vivado designing for AXI Stream through AXI DMA, regenerate the Vivado hardware design project  using the tcl file in [Folder path to waijung2 folder]\targets\zynq7000\demo\axi_stream_demo\hardware_design\vivado_tcl.

The interrupt signal(s) will be directed through Function-call output port. If multiple interrupts are available, those signals should be separated using Demux Simulink block.

AXI stream block configuration

AXI stream setup block

 

AXI stream write block

 

AXI stream read block

 

Typical application

Demo file is provided at:

[<waijung2 installation directory>\waijung2\targets\zynq7000\demo\axi_stream_demo]

To load the model file run the following commands in the Matlab Command Window:

•Demo 1: waijung2.openDemoInCurrentFolder('zynq7000', 'axi_stream_demo1')