SLAU358Q September 2011 – October 2019
Short TX messages with one byte only
Tx -> 0x0d (CR)
Rx -> 0x90 (ACK)
A response is sent only when the <CR> (0x0D byte) has been detected and when it is not the byte used as the part of the data frame. This command can be useful for checking communication with the MSP-GANG. When there is no response, then the baud rate should be changed. After power-up, the USB interface is used for communication with the MSP GANG; however, the RS-232 receiver is also active. To reestablish communication between USB and RS-232, the "Hello" command must be sent a minimum of three times through RS-232. After this, an ACK (0x90) is transmitted through RS-232. This sequence also works in reverse, to reestablish communication between RS-232 and USB.