commandRead showing strange behavior

[rjonkman]

So I'm now working on testing reading data from the LCD using the readCommand() method.

I'm running a very simple sketch, just reading a single register once every couple of seconds.

uint8_t status = lcd.readCommand(0x01);
Serial.print("Display On: ");
Serial.println(status & (0x01 << 7) > 0);

The return value from readCommand is always 0, so something is not right.

So I started to probe with my scope and saw some strange things. Channel 1 (yellow) is the RD pin, and Channel 2 is on the WR pin. Why is WR firing? Why is RD firing 4 times. I suspect this part of the driver hasn't been fully developed and tested?