daver2
10k Member
I think I have worked out where I have gone wrong with the X and Y coordinates for the text.
I think I have misunderstood the order of the 8-bit port (Port B) and the two (2) bits from port A that make up the 10-bit coordinates.
Also (from the value of the resistors) the XCHAR and YCHAR appear to contain a lower-value resistor at 2k.
The X (an Y) coordinates have resistor values ranging from approximately 2M down to 4k (in powers of 2) whereas the XCHAR (and YCHAR) coordinates have resistor values of 8k, 4k and 2k.
These are the 'facts'. I now just have to work out the implementation...
Dave
I think I have misunderstood the order of the 8-bit port (Port B) and the two (2) bits from port A that make up the 10-bit coordinates.
Also (from the value of the resistors) the XCHAR and YCHAR appear to contain a lower-value resistor at 2k.
The X (an Y) coordinates have resistor values ranging from approximately 2M down to 4k (in powers of 2) whereas the XCHAR (and YCHAR) coordinates have resistor values of 8k, 4k and 2k.
These are the 'facts'. I now just have to work out the implementation...
Dave