nuttx

History

Xiang Xiao e83c1400b6 build: Move BOARD_DIR definition to common place Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>		2020-05-24 20:20:12 +01:00
..
configs/nsh	boards/: Remove references to CONFIG_FS_WRITABLE	2020-03-22 08:24:07 -05:00
include
scripts	build: Move BOARD_DIR definition to common place	2020-05-24 20:20:12 +01:00
src	build: Move .config check to the top Makefile	2020-05-20 17:57:34 +01:00
Kconfig
README.txt

README.txt

1. Download and install toolchain

  $ curl https://static.dev.sifive.com/dev-tools/riscv64-unknown-elf-gcc-8.3.0-2019.08.0-x86_64-linux-ubuntu14.tar.gz

2. Follow instruction on https://github.com/enjoy-digital/litex to build the vexriscv softcore fpga gateware
   and flash to arty_a7 board

3. Configure and build NuttX

  $ mkdir ./nuttx; cd ./nuttx
  $ git clone https://bitbucket.org/nuttx/nuttx.git
  $ git clone https://bitbucket.org/nuttx/apps.git
  $ cd nuttx
  $ make distclean
  $ ./tools/configure.sh arty_a7:nsh
  $ make V=1

4. Setup tftp server on your laptop, copy nuttx.bin to your tftpboot directory and change its name to boot.bin

5. Setup the wire connection(uart and tftp) between your board and laptop

6. Run  $ minicom -b 1000000 /dev/ttyUSB1 (the default baudrate on litex vexriscv is 1e6)
   when you see the bios prompt "litex>", type "netboot" and enter soon comes the nsh prompt

7. TODO

  Support GPIO/SPI/I2C/RTC/WDT/PWM
  Support RISC-V User mode