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ILI9341 TFT
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ILI9341 TFT

by raminr on Wed Jan 13, 2021 11:18 am

Hello,

We are trying to use this TFT by SPI (Attached the picture of this TFT).
We use it as 4-wire SPI and following signals are connected:
MISO, MOSI, CLK, D/C
CS is connected to GND (always selected).
IM1,2,3 are jumpered.
D0-7 are connected to GND.

The signals seems OK from the master to the TFT (we checked them by Scope).
For the test, we try to turn off the back lite by writing 53h when D/C is low and then 00 when D/C high but the back lite does not turn off.
We also tried to read the ID but it is always 00.

Please help us what is wrong here.

Best Regards,
Ramin
Attachments
ILI9341_PS1.jpg
ILI9341_PS1.jpg (62.65 KiB) Viewed 38 times
ILI9341_CS1.jpg
ILI9341_CS1.jpg (32.46 KiB) Viewed 38 times

raminr
 
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Joined: Wed Jan 13, 2021 10:49 am

Please be positive and constructive with your questions and comments.