![]() ![]() ![]() 09h - Read Display Status) set RD from HIGH to LOW, so ILI9341 outputs data until RD returns HIGH. To read a byte from ILI after sending a read command (e.g. ILI9341 interpretes input byte as command (if RS=0) or as data/parameter (RS=1). CS pin has to be LOW during the communication, WR rising from LOW to HIGH tells to ILI to read byte on data pins. ![]() You have first to send a command to ILI and then write or read data/parameters. It drives the display and has nothing to do with touchscreen (Although the shield connects some pins of ILI9341 together with pins of the touchscreen). ILI9341 is integrated inside the display. ILI's RESET goes to pin to Arduino analog pin A4.CS (chip select) to A3. The shield connects ILI9341's data pins 0-7 to Arduino digital pins 2-8 (allowing parallel communication, not SPI). Colorful, 18-bit 262,000 different shades4-wire resistive touchscreen8 bit digital interface, plus 4 control lines ![]()
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