STMPE610 interface with Jetson Nano python3 Moderators: adafruit_support_bill, adafruit

[Aniruddha_Dongare]

Jetson Nano Interface With Adafruit STMPE610 Module Via SPI.

STMPE610_jetson_nano_4.jpeg (183.48 KiB) Viewed 113 times

Hello,

I have interface STMPE610 with Nvidia Jetson Nano via SPI interface. I have used adafruit stmpe610 circuitpython library to communicate with STMPE610. I'm not getting the correct version id of STMPE610 via SPI interface.

My connections are as Follow:-

Jetson Nano SPI Port0 adafruit STMPE610
CS0 -----------------------> SDA/CS
SCL ------------------------> SCL
MOSI ------------------------> SDI
MISO ------------------------> SD0
3.3V ------------------------> Vin
GND ------------------------> GND
3.3V -------------------------> MODE

When I run the example code it throws Run time error "Failed to find STMPE610! Chip Version 0x0".

[adafruit_support_carter]

You have 3.3V from the Jetson connected to 3Vo on the STMPE, not Vin. Try changing that and see if it helps.

Please also post a photo showing the soldering job on the header pins of the breakout.

[Aniruddha_Dongare]

Hi,

I have tried Vio pin for input supply but results are same. Getting 0x00 all the time. I have verified voltage levels and connectivity between Nano and STMPE610.

I am attaching the image of stmpe610 pin soldering.

[adafruit_support_carter]

Thanks. That soldering looks generally OK. Is the Jetson Nano the only board you have available for testing?

[Aniruddha_Dongare]

Hi...
I have tested the module with Arduino Uno board.... and it works fine with arduino board...
I wanted to ask one question that, Will this module is available in bulk quantity in future?
As STMPE610 IC is showing me obsolete in STM website.

[Aniruddha_Dongare]

I have one more doubt regarding touch co-ordinates, I am not getting the repeatability in touch co-ordinates. co-ordinates are varying in large difference at same position touch.

[adafruit_support_carter]

OK, so it works on the UNO, so we know the hardware is generally working. Are you continuing to use it with the UNO? What touch overlay are you using?

[Aniruddha_Dongare]

I am using 3.5" 480x320 4-wire Resistive TFT touchscreen. LCD driver is HX8357D. when i touch on same position once i got x=3378, y=238, On second attempt i got x=278, y=320.

[adafruit_support_carter]

One of these?
https://www.adafruit.com/product/2050

What about subsequent presses? Does it continue to be random, or does it settle on some specific value?

[Aniruddha_Dongare]

On subsequent presses on different location it settles down on same co-ordinates for 10-15 touches then it changes...

[adafruit_support_carter]

Something like that could be software or hardware related. Let's check the hardware first. Please post a photo of the UNO + STMPE610 + TFT setup you are currently using for testing.