ekiwi/pynq

PYNQ with Chisel and Rust

PYNQ with Chisel and Rust

This repository contains some examples on how Chisel and Rust can be used to create custom peripherals on the FPGA and interface them from the ARM core of the Zynq device.

The documentation helps you setup your system.

Test Log

• successfully tested accessing the rgb leds from the Overlay on 2017-11-01 using Vivado 2017.2:

> sudo ipython3
In : ov = Overlay('/home/xilinx/system.bit')
In : ov.rgbleds_gpio[0:2].write(5)

• make sure to have the Digilent board files installed in /opt/Xilinx/Vivado/2017.2/data/boards/board_files

• successfully tested accessing the loopback DMA from the Overlay on 2017-11-01 using Vivado 2017.2:

> sudo ipython3
In ....: ov = Overlay('/home/xilinx/system.bit')
In ....: xlnk = Xlnk()
    ...: in_buffer = xlnk.cma_array(shape=(5,), dtype=np.uint32)
    ...: out_buffer = xlnk.cma_array(shape=(5,), dtype=np.uint32)
    ...: 
    ...: for i in range(5):
    ...:     in_buffer[i] = i
    ...: 
    ...: dma = ov.axi_dma_0
    ...: dma.sendchannel.transfer(in_buffer)
    ...: dma.recvchannel.transfer(out_buffer)
    ...: dma.sendchannel.wait()
    ...: dma.recvchannel.wait()
    ...: 
    ...: out_buffer
Out ...:  ContiguousArray([0, 1, 2, 3, 4], dtype=uint32)

pynq's Issues

Chisel/Verilator test failing

I'm currently doing the system setup on my Archlinux machine. I have chisel, sbt and verilator installed, but the second test is failing. I cannot judge if this is due to the version of my tools or maybe just a minor bug, so here's the log:

verilated.o: In function `VL_FINISH_MT(char const*, int, char const*)':
verilated.cpp:(.text+0x7): undefined reference to `vl_finish(char const*, int, char const*)'
collect2: error: ld returned 1 exit status
make: Leaving directory '/home/daniel/Entwicklung/pynq/chisel/test_run_dir/pynq.GCDTester1346527907'
[info] GCDTester:
[info] Queue
[info] - should behave like a bounded queue (with firrtl)
[info] Queue
[info] - should behave like a bounded queue (with verilator) *** FAILED ***
[info]   java.lang.IllegalArgumentException: requirement failed: test_run_dir/pynq.GCDTester1346527907/VQueue doesn't exist
[info]   at scala.Predef$.require(Predef.scala:277)
[info]   at chisel3.iotesters.TesterProcess$.apply(PeekPokeTesterUtils.scala:153)
[info]   at chisel3.iotesters.SimApiInterface.<init>(SimApiInterface.scala:36)
[info]   at chisel3.iotesters.VerilatorBackend.<init>(VerilatorBackend.scala:281)
[info]   at chisel3.iotesters.setupVerilatorBackend$.apply(VerilatorBackend.scala:270)
[info]   at chisel3.iotesters.Driver$.$anonfun$execute$2(Driver.scala:53)
[info]   at scala.runtime.java8.JFunction0$mcZ$sp.apply(JFunction0$mcZ$sp.java:12)
[info]   at logger.Logger$.$anonfun$makeScope$2(Logger.scala:129)
[info]   at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58)
[info]   at logger.Logger$.makeScope(Logger.scala:127)
[info]   ...
[info] ScalaTest
[info] Run completed in 5 seconds, 731 milliseconds.
[info] Total number of tests run: 2
[info] Suites: completed 1, aborted 0
[info] Tests: succeeded 1, failed 1, canceled 0, ignored 0, pending 0
[info] *** 1 TEST FAILED ***
[error] Failed: Total 2, Failed 1, Errors 0, Passed 1
[error] Failed tests:
[error] 	pynq.GCDTester
[error] (test:test) sbt.TestsFailedException: Tests unsuccessful
[error] Total time: 62 s, completed Jan 2, 2018 3:09:31 PM