Graphic lcd modules

 interface connection in two ways: one is the direct access mode, the other is indirect access. Either way, you want to access the module must first read the Serial display modules  contents of the status register to determine the "busy" flag can be accessed when COG LCD Display  Graphic lcd modules not busy. Direct access method is a module interface as a memory or  devices directly linked to the MCU bus,to access memory or I / O device mode the module operation. Indirect access MCU module is operated via software simulation control timing.
Write instructions on the display module and write data write operation into the left screen and write the right screen. The difference Graphic lcd modules between writing about half the screen is only set corresponding chip select signals, and the difference between writing instruction and writing data when the write data is set RS Graphic lcd modules register select signal. Initialization operation is completed and opened to determine the display position of the display.

Interface design and software TFT LCD Display  programming described above has been successfully applied to the data acquisition system operating parameters of the display system to good effect; coupled with significant anti-button control, parameter setting, flip, the establishment of a good man-machine interface.