System

Github Repo	C Header	C source	JS source
cesanta/mongoose-os	mgos_system.h	mgos_system.c	api_sys.js

HAL that needs to be implemented for each hardware platform.

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mgos_get_heap_size

size_t mgos_get_heap_size(void);

Get system memory size.

mgos_get_free_heap_size

size_t mgos_get_free_heap_size(void);

Get system free memory.

mgos_get_min_free_heap_size

size_t mgos_get_min_free_heap_size(void);

Get minimal watermark of the system free memory.

mgos_get_fs_memory_usage

size_t mgos_get_fs_memory_usage(void);

Get filesystem memory usage

mgos_get_fs_size

size_t mgos_get_fs_size(void);

Get filesystem size. Deprecated, please use mgos_vfs_get_space_total("/") instead.

mgos_get_free_fs_size

size_t mgos_get_free_fs_size(void);

Get filesystem free space. Deprecated, please use mgos_vfs_get_space_free("/") instead.

mgos_fs_gc

void mgos_fs_gc(void);

Garbage-collect filesystem

mgos_wdt_feed

void mgos_wdt_feed(void);

Feed watchdog

mgos_wdt_set_timeout

void mgos_wdt_set_timeout(int secs);

Set watchdog timeout

mgos_wdt_enable

void mgos_wdt_enable(void);

Enable watchdog

mgos_wdt_disable

void mgos_wdt_disable(void);

Disable watchdog

mgos_system_restart

void mgos_system_restart(void) __attribute__((noreturn));

Restart system

mgos_msleep

void mgos_msleep(uint32_t msecs);

Delay given number of milliseconds

mgos_usleep

void mgos_usleep(uint32_t usecs);

Delay given number of microseconds

mgos_ints_disable

void mgos_ints_disable(void);

Disable interrupts

mgos_ints_enable

void mgos_ints_enable(void);

Enable interrupts

(*mgos_cb_t)

typedef void (*mgos_cb_t)(void *arg);

Callback for mgos_invoke_cb()

mgos_invoke_cb

bool mgos_invoke_cb(mgos_cb_t cb, void *arg, bool from_isr);

Invoke a callback in the main MGOS event loop. Returns true if the callback has been scheduled for execution.

mgos_get_cpu_freq

uint32_t mgos_get_cpu_freq(void);

Get the CPU frequency in Hz

mgos_rlock_create

struct mgos_rlock_type *mgos_rlock_create(void);

Create a recursive lock.

mgos_rlock

void mgos_rlock(struct mgos_rlock_type *l);

Acquire a recursive lock.

mgos_runlock

void mgos_runlock(struct mgos_rlock_type *l);

Release a recursive lock.

mgos_rlock_destroy

void mgos_rlock_destroy(struct mgos_rlock_type *l);

Destroy a recursive lock.

JS API

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Sys._sbuf

Sys._sbuf(len)

Helper function to allocate string of at least given length. Note that the resulting string is usually bigger than this, and it is always longer than 5 bytes; that's to guarantee that the string data is stored in a common buffer and not inlined into mjs_val_t, thus the buffer can be used as an "output" buffer: a string can be passed to some function which will alter the contents, and these changes will be visible to the caller.

Sys.calloc

Sys.calloc(nmemb, size)

Allocate a memory region. Note: currently memory allocated this way must be explicitly released with free().

Sys.total_ram

Sys.total_ram()

Return total available RAM in bytes.

Sys.free_ram

Sys.free_ram()

Return free available RAM in bytes.

Sys.reboot

Sys.reboot(ms)

Reboot the system after ms milliseconds. Return value: none.

Sys.uptime

Sys.uptime()

Return number of seconds since last reboot.

Sys.usleep

Sys.usleep(microseconds)

Sleep given number of microseconds. Return value: none.

Sys.wdt_feed

Sys.wdt_feed()

Feed the watchdog timer. Return value: none.

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