rtos - RTOS underlying operation library#
Adapted Air780E/Air700E Air780EP/Air780EPV Air601 Air101/Air103 Air105 ESP32C3 ESP32S3
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rtos.receive(timeout)#
Accept and process the underlying message queue.
Parameters
Incoming Value Type |
Explanation |
|---|---|
int |
Timeout duration, usually -1, waiting permanently |
Return Value
return value type |
explanation |
|---|---|
msgid |
If it is a timer message, the timer message id and additional information will be returned. Other messages are determined by the bottom layer and are not guaranteed to the lua layer.. |
Examples
None
rtos.timer_start(id,timeout,_repeat)#
Start a timer
Parameters
Incoming Value Type |
Explanation |
|---|---|
int |
Timer id |
int |
Timeout duration, in milliseconds |
int |
The number of repetitions. The default value is 0 |
Return Value
return value type |
explanation |
|---|---|
id |
If it is a timer message, the timer message id and additional information will be returned. Other messages are determined by the bottom layer and are not guaranteed to the lua layer.. |
Examples
-- User code please use sys.timerStart
-- Start a 3 second cycle timer
rtos.timer_start(10000, 3000, -1)
rtos.timer_stop(id)#
Turn off and release a timer
Parameters
Incoming Value Type |
Explanation |
|---|---|
int |
Timer id |
Return Value
return value type |
explanation |
|---|---|
nil |
No return value |
Examples
-- User code please use sys.timerStop
rtos.timer_stop(id)
rtos.reboot()#
Device restart
Parameters
None
Return Value
return value type |
explanation |
|---|---|
nil |
No return value |
Examples
None
rtos.buildDate()#
Get Firmware Compile Date
Parameters
None
Return Value
return value type |
explanation |
|---|---|
string |
Firmware Compile Date |
Examples
-- Get Compile Date
local d = rtos.buildDate()
rtos.bsp()#
get hardware bsp model
Parameters
None
Return Value
return value type |
explanation |
|---|---|
string |
hardware bsp model |
Examples
-- get hardware bsp model
local bsp = rtos.bsp()
rtos.version()#
Get the firmware version number
Parameters
None
Return Value
return value type |
explanation |
|---|---|
string |
Firmware version number, for example”V0001” |
Examples
-- Read version number
local luatos_version = rtos.version()
rtos.standy(timeout)#
Enter standby mode, only some devices are available, this API has been abandoned, recommend use pm library
Parameters
Incoming Value Type |
Explanation |
|---|---|
int |
Sleep duration, in milliseconds |
Return Value
return value type |
explanation |
|---|---|
nil |
No return value |
Examples
-- Enter standby mode
rtos.standby(5000)
rtos.meminfo(type)#
Get memory information
Parameters
Incoming Value Type |
Explanation |
|---|---|
type |
“sys”System memory, “lua” virtual machine memory, “psram” psram memory, default is lua virtual machine memory |
Return Value
return value type |
explanation |
|---|---|
int |
Total memory size in bytes |
int |
Size of memory currently used, in bytes |
int |
Maximum memory used in history, in bytes |
Examples
-- Print memory footprint
log.info("mem.lua", rtos.meminfo())
log.info("mem.sys", rtos.meminfo("sys"))
rtos.firmware()#
Returns the underlying description in the format of LuatOS_$VERSION_$BSP, which can be used to determine the underlying information for OTA upgrades.
Parameters
None
Return Value
return value type |
explanation |
|---|---|
string |
underlying description information |
Examples
-- Print the underlying description information
log.info("firmware", rtos.firmware())
rtos.setPaths(pathA, pathB, pathC, pathD)#
Set a custom lua script search path with priority over the built-in path
Parameters
Incoming Value Type |
Explanation |
|---|---|
string |
Path A, such as “/sdcard/%s.luac”, defaults to “” if no value is passed. In addition, the maximum length cannot exceed 23 bytes. |
string |
Path B, for example “/sdcard/%s.lua” |
string |
Path C, for example “/lfs2/%s.luac” |
string |
Path D, for example “/lfs2/%s.lua” |
Return Value
None
Examples
-- mount sd card or after spiflash
rtos.setPaths("/sdcard/user/%s.luac", "/sdcard/user/%s.lua")
require("sd_user_main") -- will search and load/sdcard/user/sd_user_main.luac and /sdcard/user/sd_user_main.lua
rtos.nop()#
Empty function, do nothing
Parameters
None
Return Value
return value type |
explanation |
|---|---|
nil |
No return value |
Examples
-- This function is simply lua -> c -> lua walk again
-- No parameters, no return value, no logical processing
-- In the vast majority of cases, calls to this function will not be encountered.
-- It usually only appears in the code of the performance test, because it does nothing..
rtos.nop()
rtos.autoCollectMem(period, warning_level, force_level)#
automatic memory collection configuration is a supplement to lua’s own collection mechanism. it is not necessary and is only triggered when luavm is idle
Parameters
Incoming Value Type |
Explanation |
|---|---|
int |
The cycle of automatic collection is equivalent to the number of receive calls, 0~60000. If it is 0, the automatic collection function is turned off, the default is 100 |
int |
The memory uses the warning water level line, which is the percentage of the total luavm memory amount, 50~95, and the memory will not start to judge whether to collect until the memory reaches the (>=) warning line. The default is 80 |
int |
The memory usage forced collection water level line is the percentage of the total luavm memory amount, 50~95. When the memory reaches (>=) the forced collection line, it will be forced to collect. The default is 90, which must be greater than the warning water line. |
Return Value
return value type |
explanation |
|---|---|
nil |
No return value |
Examples
rtos.autoCollectMem(100, 80, 90)