Adding a SPI-based SD card reader
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Mark A. Yoder
Oct 29, 2020, 11:24:44 AM10/29/20
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I have a 2.4" TFT LCD display that also has a SPI-based SD card reader on it. I'd like to interface it to my BeagleBone Black. I see there's a Pocket Beagle device tree[1] for a SPI-based micro sd on a click board.
Could this project be as easy as editing this dt to change it to the BBB's SPI bus? What am I missing?
--Mark
Calvin Slater
Dec 14, 2020, 6:53:45 PM12/14/20
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Hi Mark,
What model of TFT screen is this? Specifically what chip is used for the LCD driver?
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Mark A. Yoder
Dec 14, 2020, 7:14:40 PM12/14/20
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It's an ili9341.
--Mark
Calvin Slater
Dec 14, 2020, 7:24:24 PM12/14/20
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Have you got the screen up and running?
If so, what driver/library did you use?
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Mark A. Yoder
Dec 14, 2020, 8:11:14 PM12/14/20
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It's running a pygame-based weather app right now. Details: https://elinux.org/EBC_Exercise_12a_2.4_TFT_LCD_display_via_SPI
--Mark
Calvin Slater
Dec 15, 2020, 12:27:36 AM12/15/20
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Very nice!
Thank you for all these great tutorials
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