Advantech PCM-9388 Manual do Utilizador descarregar pdf (Página 51)

43 PCM-9388 User Manual

Chapter 4 S/W Introduction & Installation

4.3.4.6 SMBus

After the application has executed, you can click the radio button to choose to test

each access mode, i.e. Access a byte, Access multiple bytes and Access a word. All

data must be read or written in hexadecimal except the numbers for the radio button:

Access multiple bytes mode must be written in decimal. You can test the functional-

ities of the watchdog as follows:

 Read a byte

– Click the radio button- Access a byte.

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

– Key in the register offset in the Register Offset field.

– Click the “READ SMBus DATA” button and a byte of data from the device will

be shown on the Result field.

 Write a byte

– Click the radio button- Access a byte.

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

– Key in the register offset in Register Offset field.

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

– Click the “WRITE SMBus DATA” button and then the data will be written to

the device through SMBus.

 Read a word

– Click the radio button- Access a word.

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

– Key in the register offset in the Register Offset field.

– Click the “READ SMBus DATA” button and then a word of data from the

device will be shown on the Result field.

 Write a word

– Click the radio button- Access a word.

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

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Advantech PCM-9388 Manual do Utilizador Página 51