Settings

Defines
#define	WITH_FILESYSTEM
#define	SYNC_AFTER_WRITE
#define	WITH_BOOTLOG
#define	WITH_ERRLOG
#define	JTAG_DISABLE_SLEEP
Variables
const unsigned char	miosix::MAX_OPEN_FILES = 8
	Maximum number of open files. Trying to open more will fail.
const unsigned int	miosix::STACK_MIN = 384
	Minimum stack size (MUST be divisible by 4).
const unsigned int	miosix::STACK_DEFAULT_FOR_PTHREAD = 2048+512
const short int	miosix::PRIORITY_MAX = 4
const unsigned char	miosix::MAIN_PRIORITY = 1

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Detailed Description

If your application requires it, you can change the default settings for kernel and drivers.

Kernel settings are in miosix/kernel/kernel_settings.h,
while all other settings are in miosix/miosix_settings.h

Don't forget to rebuild the kernel if you make modifications to these settings.

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Define Documentation

#define JTAG_DISABLE_SLEEP

JTAG debuggers lose communication with the device if it enters sleep mode, so to use debugging it is necessary to disble sleep in the idle thread. By default it is not defined (idle thread calls sleep).

#define SYNC_AFTER_WRITE

Increases filesystem write robustness. After each write operation the filesystem is synced so that a power failure happens data is not lost (unless power failure happens exactly between the write and the sync) Unfortunately write latency and throughput becomes twice as worse By default it is defined (slow but safe)

#define WITH_BOOTLOG

Uncomment to print bootlogs on stdout. By default it is defined (bootlogs are printed)

#define WITH_ERRLOG

Uncomment for debug information on stdout. By default it is defined (error information is printed)

#define WITH_FILESYSTEM

Allows to enable/disable filesystem support. By default it is defined (filesystem support is enabled)

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Variable Documentation

const unsigned char miosix::MAIN_PRIORITY = 1

Priority of main() The meaning of a thread's priority depends on the chosen scheduler.

const short int miosix::PRIORITY_MAX = 4

Number of priorities (MUST be >1) PRIORITY_MAX-1 is the highest priority, 0 is the lowest. -1 is reserved as the priority of the idle thread. The meaning of a thread's priority depends on the chosen scheduler.

const unsigned int miosix::STACK_DEFAULT_FOR_PTHREAD = 2048+512

Default stack size for pthread_create. The chosen value is enough to call C standard library functions such as printf/fopen which are stack-heavy