USB-LT02 Users Manual (Rev 1.0)
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http://www.daqsystem.com
[Table 4. Test Point PIN-OUT]
Name
Description
Remark
TP0
Bit 0 of Port 6
2
TP1
Bit 1 of Port 6
2
TP2
Bit 2 of Port 6
2
TP3
Bit 3 of Port 6
2
TP4
Bit 4 of Port 6
2
(Remark)
1.
A bit 7 of Port6 is connected to LED2, this bit is set up to output. If output is “Low” and “ 0V”,
LED2 light on.
2. There is a circuit to limit current to internal in case of Port6. If LED light on, there is no need to
limit special current resistor to external.
3. The port1 has same specification of port1 of standard 8051. In other words, it can set up weak
pull-up only.
4.4 Sample Program
A sample program is provided to make the user get familiar with the board operation.
There is no installation of special driver because USB HID device is used to driver with
supported Windows system.
The sample program has two programs. One is a program to decision whether the board
is strange action or not. The other is a program to set up I/O of each port and to control
output.
[Figure 4-7. Sample Program 1]
Summary of Contents for USB-LT02
Page 8: ...USB LT02 Users Manual Rev 1 0 8 http www daqsystem com Figure 3 2 System Properties window...
Page 9: ...USB LT02 Users Manual Rev 1 0 9 http www daqsystem com Figure 3 3 Device Manager Window...
Page 21: ...USB LT02 Users Manual Rev 1 0 21 http www daqsystem com Figure 4 9 When All Output Click...
