CT-161-CD Fujitsu Semiconductor America Inc, CT-161-CD Datasheet - Page 57

• Manufacturer Part Number: CT-161-CD
• Description: KIT 16LX FOR MB90F387
• Manufacturer: Fujitsu Semiconductor America Inc
• Series: F²MC-16LXr
• Type: MCUr

Specifications of CT-161-CD

• Contents: Board, Cable, CD
• For Use With/related Products: MB90F387S
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 865-1103

© Fujitsu
3.2
This section explains how to create a program to detect the switch operation state. The
program also controls LED operation to enable you to visually know that the switch operation
state is detected. The program applies the method of turning on the LED described in the
previous chapter.
3.2.1
The operation of the program to be created is as described below. Figure 3.4 is the flow
of the program that performs the operation.
How to create and execute a program to control LEDs by switch operation
(1) When SW1 is pressed, LED1 is turned on.
(2) While SW1 is in the on state, LED1 is kept lighting.
(3) When SW1 is released (set to off), LED1 is turned off.
(4) Similarly, LED2 is turned on and off according to the SW2 state.
Outline of program to be created
- When the read value is '0,' the switch can be determined to be in the on state.
- When the read value is '1,' the switch can be determined to be in the off state.
Set output pins for LED1 and LED2
Set input pins for SW1 and SW2
PDR2.bit5 = 0
PDR2.bit7 = 0
Set LED1 to on (PDR1.bit0 = 0)
Set LED2 to on (PDR1.bit1 = 0)
(PDR1.bit0=1, PDR1.bit1=1)
(DDR2.bit5=0, DDR2.bit7=0)
SW1 input state?
SW2 input state?
START
Figure 3.4 Flow of program
-
51
-
(6)
(3)
(4)
(7)
------------- (1)
PDR2.bit5 = 1
PDR2.bit7 = 1
------------- (2)
Set LED1 to off (PDR1.bit0 = 1)
Set LED2 to off (PDR1.bit1 = 1)
(5)
(8)