nuttx

History

Xiang Xiao b329e2377d boards: Move toolchain related variables to Toolchain.defs 1.It make sense to let Toolchain.defs give the default value 2.The board can still change if the default isn't suitable 3.Avoid the same definition spread more than 200 Make.defs Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> Change-Id: Ic2649f1c7689bcf59c105ca8db61cad45b6e0e64		2020-07-20 17:10:37 +01:00
..
configs	arch: Select 64bit elf base on the architecture characteristic	2020-05-31 21:38:32 -07:00
include	boards/risc-v/k210/maix-bit: Add initial autoled support	2020-06-08 10:53:29 +09:00
kernel	sched: Rename task_startup to nxtask_startup	2020-07-01 07:55:33 -06:00
scripts	boards: Move toolchain related variables to Toolchain.defs	2020-07-20 17:10:37 +01:00
src	boards/risc-v/k210/maix-bit: Add initial autoled support	2020-06-08 10:53:29 +09:00
Kconfig	Squashed commit of the following:	2019-12-31 09:06:20 -06:00
README-qemu.txt	boards: maix-bit: Update instructions for kostest	2020-04-22 13:45:56 +08:00
README.txt	boards: maix-bit: Add descriptions on how to write nuttx.bin to SPI-Flash	2020-05-05 17:21:32 -07:00

README.txt

1. Download and install toolchain and openocd-k210

  $ 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. Build openocd-k210

  $ git clone https://github.com/kendryte/openocd-kendryte
  $ cd openocd-kendryte
  $ ./bootstrap & ./configure & make

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 maix-bit:nsh
  $ make V=1

4. Download and run the nuttx from SRAM (not SPI-Flash)

  $ picocom -b 115200 /dev/ttyUSB0
  $ sudo ./src/openocd -s ./tcl -f ./tcl/kendryte.cfg -m 0
  $ riscv64-unknown-elf-gdb ./nuttx
  (gdb) target extended-remote :3333
  (gdb) load nuttx
  (gdb) c

5. Write nuttx.bin to SPI-Flash

  $ pip3 install kflash
  $ kflash -p /dev/ttyUSB0 -b 1500000 ./nuttx/nuttx.bin

6. TODO

  Support peripherals such as GPIO/SPI/I2C/...
  Support FPU
  Support memory protection for user mode