21 lines
986 B
Markdown
21 lines
986 B
Markdown
# MOD-LCD2.8RTP
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TFT COLOR LCD module with [UEXT connector](https://www.olimex.com/Products/Modules/) for
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[ESP32-EVB](https://www.olimex.com/Products/IoT/ESP32/ESP32-EVB/open-source-hardware) and
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[ESP32-POE](https://www.olimex.com/Products/IoT/ESP32/ESP32-POE/open-source-hardware)
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**Using MOD-LCD2.8RTP requires non-standard SPI for the display and I2C for the touch screen**
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The non-standard part of the SPI is the lack of MISO which is Data/Command selection pin (refer to controller's datasheet) which has to be set as output.
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UEXT pinout:
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|UEXT column 1|UEXT column 2|Function|
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|1 - 3.3V |2 - GND|Power pins|
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|3 - NOT USED|4 - NOT USED|UART pins not used|
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|5 - SCL|6 - SDA|I2C pins used for touch component|
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|7 - D/C|8 - MOSI|SPI pins sans MISO used for display|
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|9 - CLK|10 - CS|SPI CLK/CS for display|
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If you are using I2C, then the RX wire can also be used to control the brightness. This requires midfying the SJ2 jumper. Refer to the schematic around FET1.
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