0x50f13/gumos

Not a real operating system, but a wrapper on FreeRTOS and M5Stack

GumOS

WORK IN PROGRESS
Not a real operating system, but a wrapper on FreeRTOS and M5Stack. Will support lua script for M5Stack(currently lua does not support drawing and working with hardware – writing library implementing all of those is still to be done)

Notice

GUI is not yet ready. Also I have no idea why git don't want to add ramfs folder completely and adds only logo.

Modules

As I don't know how to implement dynamic loading on esp32 modules are currently hardcoded in src/kernel/kmodule.cpp

kconfig.h

This file stands for kernel configuration.

Parameter	Description
KERENEL_VERSION	Just kernel version.
KLOOP_SLEEP_MS	Sleep time for kernel loop( located in kstart(void) src/kernel/kernel.cpp )
ARRAY_CAPACITY	Default capacity for array capacity(see src/kernel/types/array.h)
HASHTABLE_CAPACITY	Default capacity for array capacity(see src/kernel/types/hashtable.h)
TASK_STACK_DEPTH	Max stack depth for FreeRTOS task(see https://www.freertos.org/a00125.html)
TIMER_SLEEP_TIME	Timer loop sleep time.
TIMER_PRIORITY	Priority of timer task.
TIMER_INITIAL_TIME	Initial UNIX time to set.(For precision could be double)
MICRORAMFS_SIZE	microramfs maximum size.
MIN_FREE_HEAP	This is sometimes useful to detect memory leaky. If free heap is less than MIN_FREE_HEAP then kernel will panic.
LOAD_GUI	Set to 1 to enable GUI.
LOAD_POWERCTL	Set to 1 to enable powerctl.
LOAD_SOUNDCTL	Set to 1 to enable soundctl.
LOAD_HIDCTL	Set to 1 to enable keyboard.
LOAD_AUTOSTART	Set to 1 to load lua autorun

microramfs

Brief

microramfs is builtin virtual filesystem that store resources and some of sensors states. It has fixed maximum size and in case of exceeding this space you will get error 8 (see https://github.com/Andrewerr/GumOS/blob/master/src/kernel/error.h ).

Initialization

microramfs initializes from static array placed in src/kernel/microramfs/init.h. It could be generated from any folder with this tool.

Functions

Any function return int which is error code(0 means no error).
Each function accepts filesystem instance(microramfs *fs) as first parameter.

Function	Description
create_file(microramfs *fs,char *path)	Creates file with given path(path should include file name).
write_file(microramfs *fs,char *path,uint8_t *data, uint64_t sz)	Write data to file(file will be truncated).sz is size of data
read_file(microramfs *fs,char *path, uint8_t **data, uint64_t *sz)	Read data from file. IMPORTANT:*data should be NULL before calling this function. Size of read data will be written to sz
rm_file(microramfs *fs,char *path)	Remove file by given path.
ls_dir(microramfs *fs, char *path, array_t **array)	List dir and put all object instances to array
create_dir(microramfs *fs,char *path, char *name)	Create directory with name in directory path

Not yet implemented

Following functions are not yet implemented(and even not added to headers): rm_dir, append_file

Credits

Bootlogo by RoundIcons
PlatformIO https://platformio.org
FreeRTOS https://www.freertos.org
m5stack https://github.com/m5stack/M5Stack

Opensource software licenses

Lua

Files:

src/lua

https://www.lua.org

Copyright © 1994–2019 Lua.org, PUC-Rio.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

TO-DO

A lot things to do.

• Fix issues
• Add network services
• Add NTP syncrhonization
• Add bluetooth connection to smartphone for syncing messages,notifications etc.
• Make GUI
• Add sleep mode
• Add SDCard interface
• Add updater
• A lot more...
  

gumos's Issues

kassert doesn't work correctly.

On failure instead of printing out the file and line and than killing kernel and all processes kassert still allows processes to work which leads to several time printing out and sometime even to FreeRTOS guru meditation. In fact kassert should do the following:

• Switch to console mode
• Kill all processes except self
• Print error
• Kill self

Wrong filename of logo in rams directory.

Wrong filename for bootlogo, should be ramfs/res/boot/logo/logo.jpg