Wetif VMT12, Руководство пользователя

Страница: 89 / 95

50
When the application is executed, it will display GPIO information in the
GPIO INFORMATION group box. It displays the number of input pins and
output pins. You can click the radio button to choose to test either the
single pin function or multiple pin functions. The GPIO pin assignments of
the supported platforms are located in Appendix B.
n
Test Read Single Input Pin
– Click the radio button- Single-Pin.
– Key in the pin number to read the value of the input pin. The Pin
number starts from '0'.
– Click the READ GPIO DATA button and the status of the GPIO pin
will be displayed in (R/W) Result field.
n
Test Read Multiple Input Pin
– Click the radio button- Multiple-Pins.
– Key in the pin number from ‘0x01’ to ‘0x0F’ to read the value of the
input pin. The pin numbers are ordered bitwise, i.e. bit 0 stands for
GPIO 0, bit 1 stands for GPIO 1, etc. For example, if you want to read
pin 0, 1, and 3, the pin numbers should be ‘0x0B’.
– Click READ GPIO DATA button and the statuses of the GPIO pins will
be displayed in (R/W) Result field.
n
Test Write Single Output Pin
– Click the radio button- Single-Pin.
– Key in the pin numbers you want to write. Pin numbers start from
'0'.