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Altera_Forum
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12 years ago

Data Exchange between FPGA and NIOS2

Hi Everyone, I want to implement data exchange between NIOS2 and FPGA . For exampe, transfer data form NIOS2 to FPGA with a Dual Port RAM. Is it possible to do that ? and how to make that happe...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

did you see the picture I posted in my above reply?

when you export the 's2' port to my nios II qsys top level, you will get

.dpram_s2_address(exchange_addr), // dpram_s2.address

.dpram_clk2_clk(CLK_100M), // dpram_clk2.clk

.dpram_s2_chipselect(1'b1), // .chipselect

.dpram_s2_clken(1'b1), // .clken

.dpram_s2_readdata(exchange_rdata), // .readdata

.dpram_s2_write(exchange_wren), // .write

.dpram_s2_writedata(exchange_wdata), // .writedata

then you can write or read directly to the Dual Port RAM no other timing logic needed , only pay attention that 'exchagne_wren' must be set to 1'b1 when write data is needed. 'chipselect' and 'clken' must also be set with 1'b1.

keep contact with me if there is futher problem with this issue. good luck!