Go to the documentation of this file. 26 #define ACK_SESSION_IDLE 0 27 #define ACK_SESSION_PROCESS 1 28 #define ACK_SESSION_USING 2 29 #define CMD_SESSION_0 0 30 #define CMD_SESSION_1 1 31 #define CMD_SESSION_AUTO 32 34 #define POLL_TICK 20 // unit is ms