MIDI Sender with 16bit YRV-Plus RISC-V CPU for DE0-CV

Scripts description

In Plus/boards/de0-cv/ run

  01_clean.bash                   Clean project
  05_synthesize_for_fpga.bash     Synthesize project and load ro FPGA
  06_configure_fpga.bash          Load project to FPGA
  07_upload_soft_to_fpga.bash     Upload binary using UART

You need USB-to-Serial adapter for loading binary to the FPGA Board.

Programs Description

  rust-rv        Rust RISC-V YRV Framework

It based on https://github.com/rust-embedded/riscv-rt

After build you copy code_demo.mem16 to the Plus/design directory

You can run ./07_upload_soft_to_fpga.bash directly form source folder

Toolchain

Toolchain shoul be installed in: /opt/riscv_native

Minimal version of GCC should be 12.1.0

Serial port:

To use serial port switch on S1 jumper

Original serial port

https://github.com/DmitryZlobec/uart

Related books:

"Inside An Open-Source Processor" ISBN 978-3-89576-443-1 Author, Monte Dalrymple

"Modern C." Manning, 2019, 9781617295812. ffhal-02383654 Jens Gustedt.

FPGA Prototyping by Verilog Examples Author(s):Pong P. Chu First published:11 June 2008

YRV directory Rust directory

Contains Rust code of riscv_rt crate

  $ mkdir .cargo && edit .cargo/config && cat $_
  [target.riscv32ic-unknown-none-elf]
  rustflags = [
    "-C", "link-arg=-Tlink.x"
  ]

  [build]
  target = "riscv32ic-unknown-none-elf"

You need to install cargo binutils

and

rustup targe add riscv32i-unknown-none-elf

to build run in app:

cargo objcopy --release -- -O binary app.bin

rustup toolchain install nightly

rustup override set nightly

cargo build -Z build-std=core --target riscv32ic-unknown-none-elf.json --release

Main build steps

rustc -Z unstable-options --target=riscv32imac-unknown-none-elf --print target-spec-json

riscv-none-elf-objcopy.exe -O binary ../target/riscv32ic-unknown-none-elf/release/app app.bin

python bin2hex/freedom-bin2hex.py -w16 app.bin >code.mem16

To load in FPGA

load.bat

Another build

cargo build -Z build-std=core --target riscv32i-unknown-none-elf --release

riscv-none-elf-objcopy.exe -O binary ../target/riscv32i-unknown-none-elf/release/app app.bin

python bin2hex/freedom-bin2hex.py -w16 app.bin >code.mem16

Example

https://youtube.com/shorts/3Girmdu2oNI

Octave Note Numbers

C C# D D# E F F# G G# A A# B

-1 0 1 2 3 4 5 6 7 8 9 10 11

0 12 13 14 15 16 17 18 19 20 21 22 23

1 24 25 26 27 28 29 30 31 32 33 34 35

2 36 37 38 39 40 41 42 43 44 45 46 47

3 48 49 50 51 52 53 54 55 56 57 58 59

4 60 61 62 63 64 65 66 67 68 69 70 71

5 72 73 74 75 76 77 78 79 80 81 82 83

6 84 85 86 87 88 89 90 91 92 93 94 95

7 96 97 98 99 100 101 102 103 104 105 106 107

8 108 109 110 111 112 113 114 115 116 117 118 119

9 120 121 122 123 124 125 126 127

cargo build -Z build-std=core --target riscv32ia-unknown-none-elf.json --release

riscv-none-elf-objcopy.exe -O binary ../target/riscv32ia-unknown-none-elf/release/app app.bin

cargo build -Z build-std=core,alloc --target riscv32ia-unknown-none-elf.json --release

DmitryZlobec / midi