Add sensor vendor MAXIM; Fix temp ptint error

2.Fix: When printing sub-zero temperature, "-" is displayed after ".".
Signed-off-by: NSimpleInit <63694297@qq.com>

Update net_test.c

Update listdir.c

Update writespeed.c

1.close dir before return;
2.fixed indentation.

Fixed indentation

Fixed  pointer check, indentation

[shell] Ensure that the last char of `char line[]` is '\0'

Update udpclient.c

stm32wb

tcpclient->udpclient

申请内存失败时，直接return，此前代码goto _exit进行rt_free空指针，会造成内存泄漏

[update] Dynamic change console

fix some English grammar errors

[add] stm32h7 adc and dac driver.

[fix bug] #3951

[kernel] fix the timer issue

[msh] rm command supports recursive deletion of folders

[fixed] 在keil环境下 compilers\armlibc\sys\unistd.h 与 libc_fcntl.h的宏定义发生了…

[fix bug] #3902

将posix_getline.h termios.h 头文件包含从<>改为""以防止路径出现分歧

解决yield操作不能及时释放cpu的问题

同步nrf52840相关修改到nrf52832中，测试了ble 相关sample，同时测试了RTC设备，可以正常工作

[update] stm32mp1 pin-index

[drivers/usb]Fixed a bug may cause stackover flow