Hi, NuttX newbie here.
I'm trying to load NuttX onto a SAMA5D3-Xplained board. I am trying to follow the board's README file. I am using the Gnu ARM embedded toolchain v9 <https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads> and a Segger J-Link Base JTAG debugger. I have an FTDI USB-serial adapter connected to the board's debug serial port. I compiled NuttX with the options suggested and debug symbols. My .config file is attached. Compiling seems to work and produces executables with debug symbols. I am trying to find a way to boot the board. The README suggests several options, one is via the debugger. I can boot into linux from an SD Card using the D36 Linux4Sam instructions <https://www.linux4sam.org/bin/view/Linux4SAM/Sama5d3XplainedMainPage> and log in using the USB serial port, so I know the board works. I can debug using the Segger debugger halting and starting the CPU while running Linux. The README says, boot the board, halt the CPU, load the nuttx ELF binary, load the symbols. That seems to work. The Segger doesn't support 'mon pc 0x20008040' like the README suggests, but lists the default start point as 0x20008040... so I just do 'mon go'. I expect a NSH on the debug serial port or the USB serial port, but there's no response either places. My question is: Should I be able to see a NSH console on the debug serial port? Or the USB serial port? I don't see either devices when I look at the host system's /dev/ directory. cheers adam ps. Here's an excerpt of my gdb session: (gdb) mon halt (gdb) load nuttx Loading section .text, size 0x19f94 lma 0x20008000 Loading section .ARM.exidx, size 0x8 lma 0x20021f94 Loading section .data, size 0xe0 lma 0x20021f9c Start address 0x20008040, load size 106620 (gdb) file nuttx A program is being debugged already. Are you sure you want to change the file? (y or n) y Load new symbol table from "nuttx"? (y or n) y Reading symbols from nuttx... (gdb) mon go -- Adam Feuer <a...@adamfeuer.com> Seattle, WA, USA
