cd /sys/kernel/debug/dispdbg
echo disp0 > name; echo switch1 > command; echo 4 10 0 0 0x4 0x101 0 0 0 8 > param; echo 1 > start;

查看disp信息：

# cat /sys/class/disp/disp/attr/sys
screen 0:
de_rate 300000000 hz, ref_fps:60
mgr0: 1920x1080 fmt[rgb] cs[0x101] range[limit] eotf[0x4] bits[8bits] err[0] force_sync[0] unblank direct_show[false] iommu[1]
dmabuf: cache[0] cache max[0] umap skip[0] overflow[0]
        hdmi output mode(10)    fps:60.6        1920x1080
        err:1   skip:217        irq:351130      vsync:0 vsync_skip:0

BUF    enable ch[0] lyr[0] z[0] prem[N] a[pixel   0] fmt[ 77] fb[1280, 736; 640, 368; 640, 368] crop[   0,   0,1280, 720] frame[   0,   0,1920,1080] addr[fe000000,fe0e6000,fe11f800] flags[0x       0] trd[0,0]
depth[ 0]    

BUF    enable ch[1] lyr[0] z[16] prem[N] a[pixel 255] fmt[  0] fb[ 800, 480; 800, 480; 800, 480] crop[   0,   0, 800, 480] frame[   0,   0, 800, 480] addr[ffc00000,       0,       0] flags[0x       0] trd[0,0]
depth[ 0] 

查看声卡：

# cat /proc/asound/cards
 0 [audiocodec     ]: audiocodec - audiocodec
                      audiocodec
 1 [snddmic        ]: snddmic - snddmic
                      snddmic
 2 [sndhdmi        ]: sndhdmi - sndhdmi
                      sndhdmi

噪声从HDMI显示屏输出：

aplay -D hw:sndhdmi -f S16_LE -c 2 -r 48000 /dev/urandom

播放视频：

tplayerdemo /tmp/x.mp4

编译报错1：

gdbusauth.c:1298:11: error: '%s' directive argument is null [-Werror=format-overflow=]
 1298 |           debug_print ("SERVER: WaitingForBegin, read '%s'", line);
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


gdbusmessage.c: In function 'g_dbus_message_to_blob':
gdbusmessage.c:2698:30: error: '%s' directive argument is null [-Werror=format-overflow=]
 2698 |       tupled_signature_str = g_strdup_printf ("(%s)", signature_str);
      |    

解决：
在前面手动加上条件判断就好了：if(line != NULL)、if(signature_str!= NULL)，或者直接屏蔽该行

编译报错2：

gawk: ./mkerrcodes.awk:88: warning: regexp escape sequence `\#' is not a known regexp operator
rm _mkerrcodes.h
cc -I. -I. -o mkerrcodes ./mkerrcodes.c
./mkerrcodes | gawk -f ./mkerrcodes2.awk >code-from-errno.h
gawk: ./mkerrcodes2.awk:94: warning: regexp escape sequence `\#' is not a known regexp operator
gawk -f ./mkstrtable.awk -v textidx=2 -v nogettext=1 \
	./err-sources.h.in >err-sources-sym.h
gawk: ./mkstrtable.awk:113: warning: regexp escape sequence `\#' is not a known regexp operator
gawk -f ./mkstrtable.awk -v textidx=2 -v nogettext=1 \
	./err-codes.h.in >err-codes-sym.h
gawk: ./mkstrtable.awk:113: warning: regexp escape sequence `\#' is not a known regexp operator
gawk -f ./mkstrtable.awk -v textidx=2 -v nogettext=1 \
	-v prefix=GPG_ERR_ -v namespace=errnos_ \
	./errnos.in >errnos-sym.h
gawk: fatal: cannot use gawk builtin `namespace' as variable name
make[6]: *** [Makefile:1324: errnos-sym.h] Error 2

解决：逐一将"sub (/#.+/, “”);"，改为：“sub (/#.+/, “”);”，也就是说最新的gawk能够识别到’#'号不需要使用转义字符（‘\‘）的帮助。另外将“namespce”改为“pkg_namespace”:

cd d1-tina-sdk/out/d1-hdmionly/compile_dir/target/libgpg-error-1.27
grep -rn "sub (/\#*" ./
grep -rn "namespace" ./

55寸的 电子表你见过吗？

全志官方格式TF卡固件下载： tina_d1-hdmionly_ucgui_demo_uart0_20220110.img.7z

开机运行ucgui demo

先执行： source build/envsetup.sh

再执行： lunch d1_hdmionly-tina

然后执行： make

接着执行： pack

就会生成： out/d1-hdmionly/tina_d1-hdmionly_uart0.img

规格书英文版： Sipeed Lichee RV DOCK Datasheet V1.0.pdf