Probem on using ADC to control the joystick

[lpcware]

Content originally posted in LPCWare by Wilbur He on Mon Mar 02 06:13:05 MST 2015
I connected my thumb joystick to the ADC pin of a LPC1769 board, and used the pin to read the value of the joystick. The value I read will change according to how i move the joystick.However,if i move it to the right, the up value changed. why? is it because my joystick has broken? looking forward to your reply.(the other directions are all correct)

[lpcware]

Content originally posted in LPCWare by xianghuiwang on Wed Mar 04 23:39:32 MST 2015
Are you using multiple ADC channels - each for one direction?
If this is the case, you could exchange directions and ADC channels connection to see if a particular ADC channel is the issue or the joystick has issue in that direction...
Please give more details of your system configuration.

[lpcware]

Content originally posted in LPCWare by Wilbur He on Mon Mar 02 06:57:11 MST 2015
Please help me if anybody know that!!