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Aadi Desai e3b080235a
Visualise IRQ via LED
2023-06-10 15:18:42 +01:00
..
audio Update main.cpp to use audio header and helpers 2023-06-08 01:37:59 +01:00
audio.cpp Update main.cpp to use audio header and helpers 2023-06-08 01:37:59 +01:00
can Add can_init() and can_isr() 2023-06-10 14:07:36 +01:00
can.cpp Visualise IRQ via LED 2023-06-10 15:18:42 +01:00
donut.cpp Switch to C++, remove externs, fix warnings 2023-05-12 19:53:27 +01:00
isr.cpp Add custom isr.cpp to project 2023-06-10 14:04:15 +01:00
led.cpp Add missing LEDs CSR ifdef 2023-05-24 12:36:34 +01:00
linker.ld Add demo software files and gitignore/build script 2023-03-07 19:05:21 +00:00
main.cpp Fixes to demo program 2023-06-10 14:56:07 +01:00
Makefile Add custom isr.cpp to project 2023-06-10 14:04:15 +01:00
note Extend defined notes in note header 2023-06-04 13:11:45 +01:00
note.cpp Add ifdefs for CSR in note header and source 2023-05-22 13:26:37 +01:00
README.md Update demo readme.md for updated BUILD_DIR 2023-06-09 11:15:02 +01:00

README.md

Bare Metal Demo App

This directory provides a basic bare metal demo app that demonstrates how to communicate / drive the custom logic in this project.

Build and Load over LiteX-Term

The project is built with: make -C demo

The project board does not provide extra interfaces to connect to the board, so serial is used here: $ litex_term --kernel demo/demo.bin /dev/ttyACMX (ACM due to the use of usb_acm UART)

You should see the demo app running and should be able to interact with it:

$ litex_term --kernel demo/demo.bin /dev/ttyACM0
        __   _ __      _  __
       / /  (_) /____ | |/_/
      / /__/ / __/ -_)>  <
     /____/_/\__/\__/_/|_|
   Build your hardware, easily!

 (c) Copyright 2012-2022 Enjoy-Digital
 (c) Copyright 2007-2015 M-Labs

 BIOS built on Jun  5 2023 13:37:57
 BIOS CRC passed (f2f2af2d)

 LiteX git sha1: 310bc777

--=============== SoC ==================--
CPU:            VexRiscv @ 48MHz
BUS:            WISHBONE 32-bit @ 4GiB
CSR:            32-bit data
ROM:            128KiB
SRAM:           8KiB
L2:             8KiB
SDRAM:          131072KiB 16-bit @ 192MT/s (CL-6 CWL-5)

--========== Initialization ============--
Initializing SDRAM @0x40000000...
Switching SDRAM to software control.
Read leveling:
  m0, b00: |01110000| delays: 02+-01
  m0, b01: |00000000| delays: -
  m0, b02: |00000000| delays: -
  m0, b03: |00000000| delays: -
  best: m0, b00 delays: 02+-01
  m1, b00: |01110000| delays: 02+-01
  m1, b01: |00000000| delays: -
  m1, b02: |00000000| delays: -
  m1, b03: |00000000| delays: -
  best: m1, b00 delays: 02+-01
Switching SDRAM to hardware control.
Memtest at 0x40000000 (2.0MiB)...
  Write: 0x40000000-0x40200000 2.0MiB
   Read: 0x40000000-0x40200000 2.0MiB
Memtest OK
Memspeed at 0x40000000 (Sequential, 2.0MiB)...
  Write speed: 11.7MiB/s
   Read speed: 17.5MiB/s

--============== Boot ==================--
Booting from serial...
Press Q or ESC to abort boot completely.
sL5DdSMmkekro
[LITEX-TERM] Received firmware download request from the device.
[LITEX-TERM] Uploading kernel.bin to 0x40000000 (11248 bytes)...
[LITEX-TERM] Upload calibration... (inter-frame: 10.00us, length: 64)
[LITEX-TERM] Upload complete (54.1KB/s).
[LITEX-TERM] Booting the device.
[LITEX-TERM] Done.
Executing booted program at 0x40000000

--============= Liftoff! ===============--

LiteX custom demo app built Jun  5 2023 13:40:19

Available commands:
help               - Show this command
reboot             - Reboot CPU
donut              - Spinning Donut demo
saw                - Sawtooth Wave demo
square             - Square Wave demo
triangle           - Triangle Wave demo
sine               - Sine Wave demo
imperial           - Imperial March demo
roll               - Music demo
can_id             - Get / Set CAN ID
can_mask           - Get / Set CAN Mask
can_read           - Receive CAN Frames and print (delay in s)
can_watch          - Watch CAN Frames at 2Hz
can_listen         - Play CAN Frames as Audio
StackSynth>