https://github.com/antoinevg/hello-d1

Bare-metal Rust explorations of the Allwinner D1
https://github.com/antoinevg/hello-d1

audio baremetal rust

Last synced: 6 months ago
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Bare-metal Rust explorations of the Allwinner D1

• Host: GitHub
• URL: https://github.com/antoinevg/hello-d1
• Owner: antoinevg
• License: mit
• Created: 2022-07-17T18:15:03.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2022-10-25T13:39:32.000Z (almost 3 years ago)
• Last Synced: 2025-04-10T04:55:55.839Z (6 months ago)
• Topics: audio, baremetal, rust
• Language: Rust
• Homepage:
• Size: 108 KB
• Stars: 15
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

          
# hello-d1

A starter project for the Lichee RV D1. There are many like it, but this one is mine.

## Dependencies

### Rust

    rustup target add --toolchain nightly riscv64imac-unknown-none-elf

    rustup component add --toolchain nightly llvm-tools-preview

    cargo install cargo-binutils

### xfel

Build:

    git clone https://github.com/xboot/xfel.git xfel.git

    cd xfel.git

    make

Put device into xfel mode:

* Power off

* Hold xfel button

* Power on

* Release xfel button

Test:

    ./xfel version

## Debugging

### Dock UART

    picocom --imap lfcrlf -b 115200 /dev/cu.usbmodem224302

    # ctrl-a + ctrl-x to exit

### D1 UART

    picocom --imap lfcrlf -b 115200 /dev/cu.usbmodem22441202

### TODO gdb

Install via homebrew:

    brew tap "riscv-software-src/riscv"

    brew install riscv-tools

Build from source:

    https://github.com/T-head-Semi/xuantie-gnu-toolchain

## Build, flash & run

    cargo build --release --example audio_testsignal

    rust-objcopy target/riscv64imac-unknown-none-elf/debug/test-d1-flash-bare \

        --binary-architecture=riscv64 \

        --strip-all -O binary \

        target/flash.bin

    # put device into xfel mode

    xfel ddr d1

    xfel write 0x40000000 target/flash.bin

    xfel exec 0x40000000

## Noisy Audio Output

Add a [RC Low Pass Filter](https://www.digikey.com/en/resources/conversion-calculators/conversion-calculator-low-pass-and-high-pass-filter) with -3dB Cutoff @ ~33.8kHz:

    C = 100nF

    R = 47R

## Greets fly to

* [riscv-rust / riscv-rust-quickstart](https://github.com/riscv-rust/riscv-rust-quickstart)

* [luojia65 / test-d1-flash-bare](https://github.com/luojia65/test-d1-flash-bare)

* [orangecms / test-d1-flash-bare](https://github.com/orangecms/test-d1-flash-bare/tree/dram-rerere)

* [adamgreig / d1rgb](https://github.com/adamgreig/d1rgb)

* [tosc-rs / d1-playground](https://github.com/tosc-rs/d1-playground)