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Revision to M587

Ian A-S

The M587 command will fail if the WiFi module has not yet been taken out of reset. So if the WiFi module has not been started, send M552 S0 to put it in idle mode first.
+When connecting to an open network with no password, M587 still requires a password in the P parameter. However, it doesn't matter what password you provide as long as it meets the minimum length requirement for M587.
+
***Important!*** Do not use M587 within config.g. As well as being a security hazard, writing the access point parameters to WiFi chip every time you start the Duet may eventually wear out the flash memory. Also, the wifi module does not get enabled until the end of running config.g. It is better to use a macro to send M587 (source: https://forum.duet3d.com/post/42798)

To undo the changes made by this version, click 'Revert Changes.' This will automatically restore the previous version of this guide.

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