Part Number: TCA8418
Tool/software:
I am using Adafruit_TCA8418 library.
My configuration is as follows:
Adafruit_TCA8418 keypad;
void setup()
{
keypad.matrix(5, 10);
keypad.flush();
}
And my code which prints to the serial any key press or releas event.
void loop()
{
if (keypad.available() > 0)
{
int k = keypad.getEvent();
if (k & 0x80) Serial.print("PRESS\tR: ");
else Serial.print("RELEASE\tR: ");
k &= 0x7F;
k--;
Serial.print(k / 10);
Serial.print("\tC: ");
Serial.print(k % 10);
Serial.println();
}
}
All the key presses are logged properly except for two cases - buttons in matrix position: row0 col9 and row1 col9. The erroneous output is as follows:
PRESS R: 0 C: 9 PRESS R: 9 C: 6 RELEASE R: 0 C: 9 RELEASE R: 9 C: 6 PRESS R: 1 C: 9 PRESS R: 9 C: 7 RELEASE R: 1 C: 9 RELEASE R: 9 C: 7
It seems like there is some other settings than matrix mode enabled. Mayby GPI mode enabled, too? I have been checking all the registers and the settings seems to be fine.
I would appreciate any hints. Thanks in advance!
