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7 years ago.
RA8875 5'' inch display is not getting Power-on
Hello, I am using ER-TFTM050-3 based 5 inch TFT in one of my project. Communication interface is 4 wire SPI. I have ordered the display with 4 wire SPI mode, after receiving the display i have not made any changes to the hadrware. Just soldered one connector for SPI connectivity with Microcontroller. Display is 3.3V.
I am using SAMD21J18A xplained pro board as my development board.
I have initialized the TFT and SPI communication. But, i am unable to see any thing on the TFT display. Herewith I attach the initialization code written for TFT along with this post. /media/uploads/chandraJ/tft_initialization.txt
I request your help, to identify issue with my code or any modifications i have to do to the hardware or other settings.
Thanks, J. Chandra Sekhar
1 Answer
6 years, 10 months ago.
I have some experience with the RA8875 in w-wire spi mode, but not with that code, or with the SAMD21J18A.
If you haven't solved this, you might try the RA8875 library I created, and map it against the SPI port of your mbed.
And you mentioned that you are powering the display from 3.3v? Do you have a separate power supply for that? I don't know the SAMD21J18A, but at least a few of the mbed modules have a 3.3v output, however it may not have the capability to drive as much current as the display requires, so you may need an external power supply.