使用“兼容设备”中的1.3寸LCD例程时Failed to open SPI device.

• HKY

  Posts: 2

  Joined: 2024-04-09 9:44

  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：

  Code: Select all

  VCC    	->    	5V
  GND    	->    	GND
  DIN    	->    	34(SPI0_MOSI)
  CLK    	->    	49(SPI0_SCK)
  CS     	->    	48
  DC     	->    	34
  RST    	->    	51
  BL  	->    	4
  

  使用cat /dev/urandom > /dev/fb0测试花屏成功，系统存在的 SPI 总线如下：

  Code: Select all

  # ls /sys/bus/spi/devices/
  spi0.0  spi2.0
  

  但运行例程时显示Failed to open SPI device.

  Code: Select all

  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
  

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