❶ 有关rt-thread的编程语言，请大神指教~
我觉得有两种可能：
1. 存放结构体内容的空间的首字节地址
2. 结构体的各成员均有各自的地址，这些地址是放在一块连续的内存中，结构体的指针存放的是这块连续的内存的首字节地址。
其实吧,对于这个结构体指针里面的具体内容不是那么重要,只要了解这种指针怎么用就行了,希望采纳
❷ rt thread 文件系统能同时读写多个文件吗
当然可以，同时打开多个文件读取或写入都是ok的，无论是FAT文件系统还是UFFS文件系统共，可以写个软件测试一下
稍后我写个软件测试一下，然后再贴出结果
\ | /
- RT - Thread Operating System
/ | \ 1.2.0 build Aug 23 2016
2006 - 2013 Copyright by rt-thread team
----------------------------------------
<boot> Booting...
<boot> ----------- sys info ------------
<boot> rom = 512 KB
<boot> ram = 64 KB @0x20000000
<boot> xram = 512 KB @0x68000000
<boot> heap = 512 KB @0x68000000
<boot> freq = 72 Mhz
<boot> ----------- app info ------------
<boot> bin = 161 KB @0x08003000
<boot> mem = 45 KB (static req)
<boot> ............................[PASS]
----------------------------------------
<xram> Testing...
<xram> 16 bit
<xram> 512 KB OK
<xram> ............................[PASS]
----------------------------------------
<SPI> Testing...
<SPI> Finding Next...
<SPI> ID = 00BF2541
<i2c> Configuration...
<i2c> ............................[PASS]
----------------------------------------
<cat9555> Testing...
<cat9555> EXIO0 @0x40
<cat9555> [cfg = 0x00c0]
init OK!
<cat9555> ........................[PASS]
----------------------------------------
<Nand> Testing...
<Nand> ID = 2C,D3,90,A6,64
<Nand> Type = 1024M
<Nand> ...........................[PASS]
----------------------------------------
<Nor> Testing...
<Nor> ID = 0001,227E,2221,2201
<Nor> ...........................[PASS]
----------------------------------------
<CH374T> Testing...
<CH374T> Detect OK
<CH374T> LibInit OK
<CH374T> .........................[PASS]
----------------------------------------
<RTC> Testing...
<RTC> External Reset occurred
<RTC> No need to configure RTC
<RTC> ............................[PASS]
----------------------------------------
<wm89xx> Testing...
<wm89xx> Find chip
<wm89xx> .........................[PASS]
----------------------------------------
<FileSystem> Init...
<FileSystem> Nor FS initialized!
<FileSystem> ....................[PASS]
----------------------------------------
os : system memory alloc 1120 bytes
flsh: UFFS consume spare data size 18
os : system memory alloc 41360 bytes
os : system memory alloc 6288 bytes
os : system memory alloc 65536 bytes
tree: found bad block 412
tree: DIR 1, FILE 21, DATA 0
<FileSystem> Nand FS initialized!
<FileSystem> .....................[PASS]
----------------------------------------
<DSP> Testing...
<DSP> ...........................[PASS]
----------------------------------------
>>Write /dev/FILE0.TXT ok
>>Write /dev/FILE1.TXT ok
>>Write /dev/FILE2.TXT ok
>>Write /dev/FILE3.TXT ok
>>Write /dev/FILE0.TXT ok
>>Write /dev/FILE1.TXT ok
>>Write /dev/FILE2.TXT ok
>>Write /dev/FILE3.TXT ok
>>Write /dev/FILE0.TXT ok
>>Write /dev/FILE1.TXT ok
>>Write /dev/FILE2.TXT ok
>>Write /dev/FILE3.TXT ok
>>Write /dev/FILE0.TXT ok
>>Write /dev/FILE1.TXT ok
>>Write /dev/FILE2.TXT ok
>>Write /dev/FILE3.TXT ok
>>Write /dev/FILE0.TXT ok
>>Write /dev/FILE1.TXT ok
>>Write /dev/FILE2.TXT ok
>>Write /dev/FILE3.TXT ok
>>Write /dev/FILE0.TXT ok
>>Write /dev/FILE1.TXT ok
>>Write /dev/FILE2.TXT ok
>>Write /dev/FILE3.TXT ok
>>Write /dev/FILE0.TXT ok
>>Write /dev/FILE1.TXT ok
>>Write /dev/FILE2.TXT ok
>>Write /dev/FILE3.TXT ok
>>Write /dev/FILE0.TXT ok
>>Write /dev/FILE1.TXT ok
>>Write /dev/FILE2.TXT ok
>>Write /dev/FILE3.TXT ok
>>Write /dev/FILE0.TXT ok
>>Write /dev/FILE1.TXT ok
>>Write /dev/FILE2.TXT ok
>>Write /dev/FILE3.TXT ok
>>Write /dev/FILE0.TXT ok
>>Write /dev/FILE1.TXT ok
>>Write /dev/FILE2.TXT ok
>>Write /dev/FILE3.TXT ok
finsh>>
finsh>>ls("/dev/")
Directory /dev/:
log <DIR>
devTst 4
NAND_DEMO 4
info_index 26
LOG.TXT 14
TABLE.DYB 35032
list_index 120
FILE0.TXT 100
FILE1.TXT 100
FILE2.TXT 100
FILE3.TXT 100
0, 0x00000000
finsh>>cat("/dev/FILE0.TXT")
0, 0x00000000
finsh>>
如果需要代码可以再贴出来
❸ 如何在rt-thread上开发应用程序
RT-Thread/GUI是专为RT-Thread操作系统开发的，并在相应的地方采用了RT-Thread特有的功能，它是一款几乎从零代码开始编写的，拥有独立知识产权的图形界面（不包括JPEG、PNG等图形库部分）。在RT-Thread许可证的条款下，能够免费的在商业产品中使
❹ rt-thread是否是免费的
RT-Thread实时操作系统遵循GPLv2+许可证，实时操作系统内核及所有开源组件可以免费在商业产品中使用，不需要公布应用程序源码，没有潜在商业风险。
放心大胆的用吧 我觉得比freertos还要好,又是国产的.
❺ rt-thread支持的cpu列表
rt-thread 支持的Cpu列表：
支持所有内核的浮点和定点；
支持ISO 26262 ASIL-D；
支持TriCore系列MCAL驱动，包括CAN、CANFD、LIN、SPI、Watchdog等；
支持多核特性的RT-Thread版本，同时延续RT-Thread易用的API；
支持GNU GCC工具链（及HighTec集成开发环境），TASKING工具链（及ADS集成开发环境）。