I have an LCD display using the ST7920 controller and I am using the dfrobot serial library available here --> http://www.dfrobot.com/image/data/FIT0021/LCD12864RSPI.rar
I'm simply trying to write a number on to the LCD screen but having a little trouble as the function to write text to the screen requires unsigned char.
I can use the following to convert a number to a string. char millis_char; ** unsigned long millis_ulong = millis();** ** sprintf(millis_char,"%d",millis_ulong);**
but I don't know how to convert the string to unsigned char.
this is to use in the LCDA.DisplayString function