Why do some AT commands return "Error: (16)" when sent to the device?
niu.yixuan 2024-07-12 15:04:05 5 Views0 Replies 2024-07-12 15:04:05 Please check the Appendix 1: AT command error in that manual, 16 means "SPP is not initialized", so please send "AT+INIT" to initialize the SPP before sending other AT commands like you mentioned. 
niu.yixuan
niu.yixuan 
