es the number of file descriptors statically allocated. This setting defines the value of ALT_MAX_FD in system.h.</td>
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<td width="20%">Restrictions:</td><td>If hal.enable_lightweight_device_driver_api is true, there are no file descriptors so this setting is ignored. If hal.enable_lightweight_device_driver_api is false, this setting must be at least 4 because HAL needs a file descriptor for /dev/null, /dev/stdin, /dev/stdout, and /dev/stderr.</td>
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</table>
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