nuttx

History

Gregory Nutt 198b8ae380 boards: Leverage PR 1150 to all remaining board Make.defs Only Make.defs files tht followed the same pattern as the ARM Make.defs were modified. This excludes some of the sim and renesas Make.defs files and all of the z80 Make.defs files.		2020-05-31 16:11:07 +01:00
..
configs	boards: maix-bit: Update knsh/defconfig	2020-05-13 03:34:04 +01:00
include	Remove exra whitespace from files (#189 )	2020-01-31 09:24:49 -06:00
kernel	build: Move BOARD_DIR definition to common place	2020-05-24 20:20:12 +01:00
scripts	boards: Leverage PR 1150 to all remaining board Make.defs	2020-05-31 16:11:07 +01:00
src	build: Move .config check to the top Makefile	2020-05-20 17:57:34 +01:00
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