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notro / fbtft

Linux Framebuffer drivers for small TFT LCD display modules. Development has moved to https://git.kernel.org/cgit/linux/kernel/git/gregkh/staging.git/tree/drivers/staging/fbtft?h=staging-testing
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How to close Waveshare 3.5" TouchScreen's LED backlight ? #320

Closed wzhy90 closed 8 years ago

wzhy90 commented 9 years ago

How can I disable the led backlight ?

Key Parameters
LCD Type                       TFT
LCD Interface                       SPI
Touch Screen Type       Resistive
Touch Screen Controller         XPT2046
Colors                              65536
Backlight                               LED
Resolution                      320*480 (Pixel)
Aspect Ratio                        2:3
Power Consumption       TBD
Backlight Current               TBD
Operating Temp. (¡æ)      TBD
1,17                                      3.3V
2,4                                        5V
3,5,7,8,10,12,13,15,16         NC
6,9,14,20,25                         GND
11                                         TP_IRQ (Touch Panel interrupt)
18                                         LCD_RS (Instructions / Data Register Selection)
19                                         LCD_SI / TP_SI (SPI data input)
21                                         TP_SO (SPI data output)
22                                         RST (Reset)
23                                         LCD_SCK / TP_SCK (SPI clock)
24                                         LCD_CS (LCD chip selection)
26                                         TP_CS (Touch Panel chip selection)
notro commented 8 years ago

Closing old issues, reopen if needed.