Update README files
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@ -696,42 +696,52 @@ Where <subdir> is one of the following:
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2015-5-23
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2015-5-23
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The nuttx.bin minnsh firmware file size:
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The nuttx.bin minnsh firmware file size:
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$ ls -l nuttx.bin
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$ ls -l nuttx.bin
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-rwxr-xr-x 1 alan alan 17409 May 23 11:01 nuttx.bin
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-rwxr-xr-x 1 alan alan 17409 May 23 11:01 nuttx.bin
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$ arm-none-eabi-size nuttx
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$ arm-none-eabi-size nuttx
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text data bss dec hex filename
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text data bss dec hex filename
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16367 193 704 17264 4370 nuttx
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16367 193 704 17264 4370 nuttx
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This is serial console output (and input) :
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This is serial console output (and input) :
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NuttShell (NSH)
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NuttShell (NSH)
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nsh> ls /dev
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nsh> ls /dev
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nsh: ls: command not found
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nsh: ls: command not found
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No filesystem, no "ls" command :-)
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No filesystem, no "ls" command :-)
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nsh> ?
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nsh> ?
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help usage: help [-v] [<cmd>]
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help usage: help [-v] [<cmd>]
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? exec free mb mw xd
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? exec free mb mw xd
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echo exit help mh ps
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echo exit help mh ps
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nsh> free
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nsh> free
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total used free largest
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total used free largest
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Mem: 6464 1816 4648 4648
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Mem: 6464 1816 4648 4648
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nsh> echo "NuttX is magic!"
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nsh> echo "NuttX is magic!"
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NuttX is magic!
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NuttX is magic!
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nsh>
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nsh>
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Replace NSH with apps/examples/hello:
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Replace NSH with apps/examples/hello:
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$ ls -l nuttx.bin
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$ ls -l nuttx.bin
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-rwxr-xr-x 1 alan alan 12873 May 23 11:05 nuttx.bin
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-rwxr-xr-x 1 alan alan 12873 May 23 11:05 nuttx.bin
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$ arm-none-eabi-size nuttx
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$ arm-none-eabi-size nuttx
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text data bss dec hex filename
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text data bss dec hex filename
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11829 193 704 12726 31b6 nuttx
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11829 193 704 12726 31b6 nuttx
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2015-05-25:
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Some additional commits from Alan reduce this FLASH size by
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about another kilobyte. That changes: (1) disable stack
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dumping on assertions,and (2) make some FLASH data structures
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smaller.
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Almost 2Kb of the remaining size is due to some arithmetic
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functions drawn from libgcc.a. Alan is currently looking
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into ways to eliminate thost libgcc.a objects from the link.
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nsh:
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nsh:
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---
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---
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@ -495,20 +495,24 @@ Atmel Studio 6.1
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Loading Code into FLASH:
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Loading Code into FLASH:
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-----------------------
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-----------------------
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Tools menus: Tools -> Device Programming.
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Tools menus: Tools -> Device Programming.
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Debugging the NuttX Object File
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Debugging the NuttX Object File
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-------------------------------
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-------------------------------
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1) Rename object file from nutt to nuttx.elf. That is an extension that
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1) Rename object file from nutt to nuttx.elf. That is an extension that
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will be recognized by the file menu.
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will be recognized by the file menu.
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2) File menu: File -> Open -> Open object file for debugging
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2) File menu: File -> Open -> Open object file for debugging
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- Select nuttx.elf object file
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- Select nuttx.elf object file
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- Select AT91SAML21J18
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- Select AT91SAML21J18
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- Select files for symbols as desired
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- Select files for symbols as desired
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- Select debugger
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- Select debugger
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3) Debug menu: Debug -> Start debugging and break
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3) Debug menu: Debug -> Start debugging and break
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- This will reload the nuttx.elf file into FLASH
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- This will reload the nuttx.elf file into FLASH
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JTAG
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JTAG
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