UM1545 datasheet(40/64 Pages) STMICROELECTRONICS

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F.A.Q.s

UM1545

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Doc ID 023225 Rev 1

F.A.Q.s

In this section we provide a few guidelines to answer the most common questions.

4.1

Questions & procedures

Q: "I need to interface with a device that has been already set from an external controller.

How do I retrieve these settings with the APW?"

A: Follow this procedure:

1. Be sure that the interface is not connected to the device, start the APW and set

the no operation option in the Startup Preferences. Save the preferences and

close the program.

2. Connect the interface and start the APW.

3. Press the Retrieve button.

4. Press the Save button to save the configuration.

Q: "I want to apply all the settings at once and not step-by-step. How do I set the APW?"

A: Follow this procedure:

1. Uncheck the Auto Apply option in the preferences dialog.

2. Apply all the desired settings using the controls offered by the APW.

3. Select the Registers Bank tab and press the Write All button.

Q: "I'm not familiar with the device but I'd like to know what registers are changed when I

configure it using the APW, is this possible?"

A: Follow this procedure:

1. Uncheck the Auto Apply option in the preferences dialog.

2. Apply all the desired settings using the controls offered by the APW.

3. Select the Registers Bank tab and move along the register list. Those R/W

registers marked in violet are the ones you're interested in.

or this one:

1. Configure the device as needed.

2. Go to the Registers Bank tab and enable the Enable Check vs Defaults option.

3. Now the modified registers are displayed in red, move along the list and check.

Q: "This device has too many registers and moving along their list to find those I want to

modify takes too much time, is it possible to show only those I'm interested in?"

A: Of course it is. Use the Register List Filter drop-down menu to filter the device

registers depending on their function.

Q: "I'm setting up the device but I do not get the expected results. How do I check if the

configuration of the device is coherent with the one depicted in the APW controls?"

A: Follow this procedure:

1. Go to the Register Bank tab and press the Verify All button.

2. When the previous operation is over, move along the registers list. The APW will

display in violet the register whose value is different from the expected one.

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