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Member
Hello,
I am a novice and I apologize if my questions are trivial. I have Teensy 3.2 and I am trying to connect it with SPI to a
Adafruit 1.44" Color TFT LCD Display with MicroSD Card breakout(ST7735R) for display. (not currently interested in using the SD card)
https://www.adafruit.com/product/2088
I am looking at this web site for Pin connections and examples to wire it up.
https://www.pjrc.com/store/display_ili9341_touch.html
Regarding SPI terminology, I think this is true: DOUT is the same thing as MOSI ? and on the Adafruit TFT, it is the SI pin?
The Adafruit TFT has a RST pin. Which pin on the Teensy 3.2 would that correspond to ?
On the PRJC web link above, it has RESET going to +3.3V (next to pin 23) is that correct?
and if so, what is the pin number would I use for it? the adafruit example "graphicstest" says use "-1" for the pin?
I see "reset" on the bottom of the Teensy 3.2 but I'm not sure how to access and use that using a breadboard? is that the correct reset to use?
and if so, any practical suggestions on how to wire it up? If needed, I guess I could solder a wire lead to it but I'd like confirmation it is needed before doing that.
I currently have things wired like this:
I am a novice and I apologize if my questions are trivial. I have Teensy 3.2 and I am trying to connect it with SPI to a
Adafruit 1.44" Color TFT LCD Display with MicroSD Card breakout(ST7735R) for display. (not currently interested in using the SD card)
https://www.adafruit.com/product/2088
I am looking at this web site for Pin connections and examples to wire it up.
https://www.pjrc.com/store/display_ili9341_touch.html
Regarding SPI terminology, I think this is true: DOUT is the same thing as MOSI ? and on the Adafruit TFT, it is the SI pin?
The Adafruit TFT has a RST pin. Which pin on the Teensy 3.2 would that correspond to ?
On the PRJC web link above, it has RESET going to +3.3V (next to pin 23) is that correct?
and if so, what is the pin number would I use for it? the adafruit example "graphicstest" says use "-1" for the pin?
I see "reset" on the bottom of the Teensy 3.2 but I'm not sure how to access and use that using a breadboard? is that the correct reset to use?
and if so, any practical suggestions on how to wire it up? If needed, I guess I could solder a wire lead to it but I'd like confirmation it is needed before doing that.
I currently have things wired like this:
Code:
TFT Teensy 3.2
Display
Vin Vin
3v3
Gnd GND
SCK 14
SO
SI 7
TCS 9
RST ??
D/C 20
CCS
Lite