51 lines
1.5 KiB
Markdown
51 lines
1.5 KiB
Markdown
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ELFloader and shell command 'exec' example for Sky platform
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-----------------------------------------------------------
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Compiles the Contiki hello-world application as a Contiki executable (.ce).
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The Contiki executable is then uploaded to the Sky platform via serial, and is
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stored in the filesystem. Finally, the executable is loaded via the shell
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command 'exec'.
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NOTE: You may have to reduce the ELF loader memory usage
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(/platform/sky/contiki-conf.h). Since hello-world uses very little memory:
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#define ELFLOADER_CONF_DATAMEMORY_SIZE 0x100
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#define ELFLOADER_CONF_TEXTMEMORY_SIZE 0x100
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1. Upload Sky shell with 'exec' command and symbols (requires several
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recompilations to generate correct symbols):
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make sky-shell-exec.sky
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make sky-shell-exec.sky CORE=sky-shell-exec.sky
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make sky-shell-exec.upload CORE=sky-shell-exec.sky
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2. Verify access to the shell and the filesystem:
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> make login
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SHELL> echo hello shell
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SHELL> echo test | write mytest.txt
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SHELL> ls
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SHELL> read mytest.txt
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[CTRL-C] to exit the shell
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3. Upload Contiki executable hello-world.ce:
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> make upload-executable
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[CTRL-C] to exit the shell when the entire file has been uploaded (after
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~30 sec)
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4. Verify that hello-world.ce exists in CFS:
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> make login
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SHELL> ls
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SHELL> read hello-world.ce | size
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The last command output should equal the size of hello-world.ce in this
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directory!
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5. Load and start hello world:
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SHELL> exec hello-world.ce
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The program should now start: the output 'Hello, World' appears.
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