According to the serial port configuration part of the manual, I can receive the s0 packet by sending "S0" through the serial port, and sending 0x02 can adjust the packet rate of imu from the default 100hz to 50hz, but now I send the command through the serial port, imu It hasn't changed, what's the matter? Or do you have a serial port configuration example for imu, can you give me a reference?