eagle1109
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Hi,
I have a problem with a capacitive touch display model I bought from aliexpress.
The capacitive touch driver is the GT911 which runs by i2c. So the circuit must have SDA/SCL pulled to HIGH voltage level.
They also connecting INT/RST pins as well to HIGH level. According to their schematic circuit, this part of the schematic diagram and in the attachement the full file:
The pins controlling INT/RST are configured as OUTPUT, the ESP32 can pull them HIGH/LOW easily without any issue.
The problem is when configuring INT to be INPUT, then this pin will be in HIGH level all the time and that will lock the ESP32 in infinite loop all the time ! I don't know why even if I'm not enabling the interrupt mode. Just configuring the pin connected to INT pin of GT911 will just put the ESP32 in infinite loop and no other code will be processed.
My question, can I add a resistor going to the GND ? so that when I put this pin to be input and be flaoting to the ESP32, then it will be pulled to GND.
Or do you guys recommend me another approach ?
I have a problem with a capacitive touch display model I bought from aliexpress.
The capacitive touch driver is the GT911 which runs by i2c. So the circuit must have SDA/SCL pulled to HIGH voltage level.
They also connecting INT/RST pins as well to HIGH level. According to their schematic circuit, this part of the schematic diagram and in the attachement the full file:
The pins controlling INT/RST are configured as OUTPUT, the ESP32 can pull them HIGH/LOW easily without any issue.
The problem is when configuring INT to be INPUT, then this pin will be in HIGH level all the time and that will lock the ESP32 in infinite loop all the time ! I don't know why even if I'm not enabling the interrupt mode. Just configuring the pin connected to INT pin of GT911 will just put the ESP32 in infinite loop and no other code will be processed.
My question, can I add a resistor going to the GND ? so that when I put this pin to be input and be flaoting to the ESP32, then it will be pulled to GND.
Or do you guys recommend me another approach ?