Advantech PCM-9388 Manual do Utilizador descarregar pdf (Página 50)

PCM-9388 User Manual 42

– Key in the pin number from ’0x01’ to ‘0x0F’ to choose the multiple pin num-

bers to write the value of the output pin. The pin numbers are ordered bit-

wise, i.e. bit 0 stands for GPIO 0, bit 1 stands for GPIO 1, etc. For example, if

you want to write pin 0, 1, and 3, the pin numbers should be ‘0x0B’.

– Key in the value in (R/W) Result field from ‘0x01’ to ‘0x0F’ to write the value

of the output 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 set pin 0

and 1 high, 3 to low, the pin number should be ‘0x0B’, and then you should

key in the value ‘0x0A’ to write.

– Click the WRITE GPIO DATA button to write the GPIO output pins.

4.3.4.5 I

When the application is executed, you can read or write a byte of data through I

devices. All data must be read or written in hexadecimal system.

 Read a byte

– Key in the slave device address in Slave address field.

– Key in the register offset in Register Offset field.

– Click the READ A BYTE button and then a byte of data from the device will

be shown on the Result field.

 Write a byte

– Key in the slave device address in Slave address field.

– Key in the register offset in Register Offset field.

– Key in the desired data in the Result field to write to the device.

– Click the “WRITE A BYTE” button and the data will be written to the device

through I2C.

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