验证

烧录，运行系统，使用 Tab 键查看命令是否添加成功

Startup reason: Power-On-Reset
Startup time: 0.601 sec (from Power-On-Reset)
os  : system memory alloc 320 bytes
flsh: UFFS consume spare data size 36
os  : system memory alloc 84480 bytes
os  : system memory alloc 53200 bytes
os  : system memory alloc 7168 bytes
tree: DIR 1, FILE 1, DATA 22
info.bits_per_pixel: 32
info.width: 1024, info.height: 600
lv_draw_aic_ctx_init:1024, 600id= GT911
range_x=1024range_y=600point_num=1
aic />
aic /> <tab>                    # 单击 Tab 键，系统罗列出可用命令列表，
RT-Thread shell commands:
...
test_gt911     - test gt911 sample      # 添加的 test_gt911 命令已在列表中
...