使用“兼容设备”中的1.3寸LCD例程时Failed to open SPI device.
Posted: 2024-07-26 4:14
使用Luckfox Pico Plus按照文档要求与1.3寸LCD（使用第三方屏幕，并非1.3 英寸 LCD Pico 扩展板）连接如下：
使用cat /dev/urandom > /dev/fb0测试花屏成功，系统存在的 SPI 总线如下：
但运行例程时显示Failed to open SPI device.
Code: Select all
VCC -> 5V
GND -> GND
DIN -> 34(SPI0_MOSI)
CLK -> 49(SPI0_SCK)
CS -> 48
DC -> 34
RST -> 51
BL -> 4
Code: Select all
# ls /sys/bus/spi/devices/
spi0.0 spi2.0
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OUT Pin = 48
OUT Pin = 51
OUT Pin = 34
OUT Pin = 4
IN Pin = 55
IN Pin = 101
IN Pin = 102
IN Pin = 98
IN Pin = 54
IN Pin = 57
IN Pin = 103
IN Pin = 16
IN Pin = 57
IN Pin = 103
IN Pin = 100
IN Pin = 99
Failed to open SPI device.
: No such file or directory