&spi0{
status = "okay";
st7789v: st7789v@0{
compatible = "sitronix,st7789v";
reg = <0>;
status = "okay";
spi-max-frequency = <32000000>;
spi-cpol;
spi-cpha;
rotate = <0>;
fps = <10>;
buswidth = <8>;
rgb;
dc-gpios = <&pio 1 4 GPIO_ACTIVE_HIGH>; // PB4
reset-gpios = <&pio 1 5 GPIO_ACTIVE_HIGH>; // PB5
//led-gpios = <&pio 1 7 GPIO_ACTIVE_LOW>; // PB7
width = <240>;
height= <320>;
debug = <0>;
};
};
开机
usbhid: USB HID core driver
[ 1.092172] fbtft_of_value: width = 240
[ 1.096011] fbtft_of_value: height = 320
[ 1.099968] fbtft_of_value: buswidth = 8
[ 1.103888] fbtft_of_value: debug = 0
[ 1.107547] fbtft_of_value: rotate = 0
[ 1.111304] fbtft_of_value: fps = 10
[ 1.122424] mmc0: host does not support reading read-only switch, assuming write-enable
[ 1.132420] mmc0: new high speed SD card at address 21b7
[ 1.139811] mmcblk0: mmc0:21b7 APPSD 480 MiB
[ 1.146192] mmcblk0: p1 p2
[ 1.691784] random: fast init done
[ 1.740803] Console: switching to colour frame buffer device 30x40
[ 1.747711] graphics fb0: fb_st7789v frame buffer, 240x320, 150 KiB video memory, 4 KiB buffer memory, fps=10, spi0.0 at 32 MHz开机后雪花飘飘，执行
# ./usr/bin/fb-test
fb-test 1.1.0 (rosetta)
fb res 240x320 virtual 240x320, line_len 480, bpp 16直接白屏
# cat /dev/urandom > /dev/fb0
cat: write error: No space left on device变成雪花飘飘
播放视频白屏闪烁
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降低fps至10，时钟频率设置为32000000，也一样
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请问有遇到开机log里显示是初始化成功，但屏幕没有亮的情况吗
dev目录有没有fb，可以用工具fb-test测试
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542396750@qq.com 说：dev目录有没有fb，可以用工具fb-test测试
串口是这样显示的，但屏幕只亮了背光
https://img-blog.csdnimg.cn/4ec30b4259aa41e8ac0d6abf1eaba6e5.png
dev看下是不是有两个fb，会不会是还有一个RGB接口的屏幕没删掉
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