nuttx

History

yinshengkai 9f9076ed61 boards/arty_a7: fix ci compile failure NETUTILS_IPERF and CONFIG_DEFAULT_SMALL conflict Loaded configuration '.config' Configuration saved to '.config' warning: LIBC_FLOATINGPOINT (defined at libs/libc/stdio/Kconfig:55) has direct dependencies !LIBM_NONE with value n, but is currently being y-selected by the following symbols: - NETUTILS_IPERF (defined at /home/baerg/code/NXOS/apps/netutils/iperf/Kconfig:6), with value y, direct dependencies NET (value: y), and select condition NET (value: y) make: *** [tools/Unix.mk:680: olddefconfig] Error 1 ERROR: failed to refresh Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>		2023-08-10 03:33:42 +08:00
..
configs	boards/arty_a7: fix ci compile failure	2023-08-10 03:33:42 +08:00
include
scripts	boards/litex/arty_a7: Support building fully linked executables.	2023-06-28 15:16:28 +08:00
src
Kconfig	Kconfig: Simplify the conditional default statement	2023-07-16 14:39:20 -03:00
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

  $ cd litex-boards/litex_boards/targets
  $ ./digilent_arty.py --with-ethernet --with-sdcard --uart-baudrate 1000000 --cpu-type=vexriscv --cpu-variant=secure --build --load --flash

3. Configure and build NuttX

  $ mkdir ./nuttx; cd ./nuttx
  $ git clone https://github.com/apache/nuttx.git nuttx
  $ git clone https://github.com/apache/nuttx-apps.git apps
  $ 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