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jlanier's avatar
jlanier
Icon for New Contributor rankNew Contributor
5 years ago

Add ROM in Platform Designer and read from ROM with C code and Nios II Processor

I have gone through the Using Triple-Speed Ethernet on DE2-115 Boards tutorial successfully. The tutorial uses a C program with the Nios II processor to send user input data over UART to the FPGA. Wh...
AKb's avatar
AKb
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Hi,

I am trying to implement triple speed ethernet in Cyclone 10 FPGA. I have integrated triple speed ethernet core in platform designer in qsys. If i pump data and do loop back in system side of MAC, its working fine. I am able to monitor Start of packet, data valid, data, End of packet properly in signal tap. Now my aim is that i try to capture the streaming data in system side of MAC directly in Nios side memory. For this i am using Modular Scatter gather DMA. For receive data i am using one MSGDMA in streaming to memory mode and one for transmit data i am using one MSGDMA in memory to streaming mode. I try to capture data in descriptor memory in onchip ram. But i am not getting any data.

I have doubt about my connections of MSGDMA in Qsys.There are no any specific examples detailing how to use MSGDMA with TSE. Some people have done it with SGDMA . I am using quartus 18.1. So how to go about it. How to capture data in onchip RAM.

Kindly guide

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