Fujitsu 32-Bit Microcontroller MB9B500 Series Manuel d'utilisateur télécharger pdf (Page 20)

4.7 LCD & AD & Key

 Hardware Setting

None

 Flowchart

Start

Initialization

(clock, key, lcd,

led, dual timer, ad)

Press key?

Display key

pressed in LCD

AD convert

Pre_AD_value-

Cur_AD_calue>threshold value

Display new AD

value on LCD

Count Time = 1s

Set LCD update

flag

Set LCD update

flag

Count time++

LCD update flag = 1 ?

Count time = 0

Clear LCD update

flag

Clear window and

display logo in LCD

Figure 4-11: LCD, key, AD Sample Code Flowchart

 Usage

1) Run the code

2) Press key, and the key pressed can display on the LCD

3) Regulate the potentiometer to change the input voltage of channel 7, and this

voltage can be detected and displayed on LCD.

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Fujitsu 32-Bit Microcontroller MB9B500 Series Manuel d'utilisateur Page 20