HMR3500 User's Guide
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Software reset causes a restart from the beginning of the compass firmware. It is intended primarily for development
purposes. As soon as the compass determines that it has received the RSET command, it initiates a reset of the
microcontroller. There can be no direct acknowledgment to this command, since all resources are re-initialized. Instead,
the host should recognize the receipt of the DPOWER message, which is sent as a normal part of the power-up
sequence, as an indication that the compass has reset. Because of the full reset, all power-up defaults will be restored.
Table 2: Message List
Software reset of the compass. This causes the DPOWER wake-up message to be sent.
Request firmware version, serial number, build options, and configured orientation.
Request the wake-up message.
Switch to a new baud rate.
Supplies temperature and heading.
Initialize mounting offset.
Initialize magnetic variation (declination).
Control calculation of declination from World Magnetic Model
Sets DORIENT output rate.
Perform compass magnetic compensation.
Set start-up defaults.