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The MS23SF1 has a total of 5 GPIO pins, including NREST (Reset), IO1, IO2, BUSY indicator, and SPI connection to the MCU.

The frequency of mmWave radar typically refers to the millimeter wave frequency range used for radar applications. The specific frequency range can vary depending on the system and application, but it generally falls within the range of 30 to 300 gigahertz (GHz), which corresponds to wavelengths of 1 to 10 millimeters.

In automotive radar systems, for example, the frequency range for mmWave radar typically falls between 76 and 81 GHz. This frequency range is chosen for its characteristics, including good resolution, high bandwidth, and the ability to support high-resolution imaging and sensing in various weather conditions.

It's worth noting that different radar systems may operate at different frequencies within the mmWave range, depending on the specific requirements and regulations of the application.

The AT+BLESPPCFG command can enable the automatic reconnection function, which is enabled by default.

 The AT+BLEDATALEN command can be used to set the data packet length, with a length range of [27,251].

The AT+BLECONNPARAM command can be used to set the minimum and maximum connection interval, with a practical range of [7.5,4000] milliseconds.

The AT+BLEADVPARAM command can be used to set the minimum and maximum broadcast interval, with a practical range of [20,19240] milliseconds.