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Forum : Digole Serial Display :

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I2C Touch Stops working after USB upload, or plug in

 Hi,

I have a coulour IPS display with touch screen connected to an Arduino. It works OK when powering on, but if already on, If I upload code, or plug in USB, the touch no longer works.

What could cause this?

RE:I2C Touch Stops working after USB upload, or plug in

 Because the display module still waiting for touch press even you upload a new code, you need to reset the display module when you restart the sketch.

RE:I2C Touch Stops working after USB upload, or plug in

 How do I do that?

RE:I2C Touch Stops working after USB upload, or plug in

 Is there a command  I can send to reset it, or do I have to physically power it off and on?

RE:I2C Touch Stops working after USB upload, or plug in

 You will find a group of 5 blank pads on the PCB, 4 rounded, 1 rectangle, the rectangle one is reset pin, pull it to low will reset the module.

RE:I2C Touch Stops working after USB upload, or plug in

 Is there any way to do it without having to use an additioanl connection to my microcontroller?

RE:I2C Touch Stops working after USB upload, or plug in

 Is there no way to send a command over I2C to reset the touch part to make it work again?

RE:I2C Touch Stops working after USB upload, or plug in

Sorry, no soft way to reset the module.

RE:I2C Touch Stops working after USB upload, or plug in

 I've noticed that sometimes after connecting USB, the touch continues to work? Why would this be? Is there some way I could exploit that? Why would it do this sometimes and not others?

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