OMESH Networks Inc. OPM15E1 Manuale Utente

 

1 

 

 

Section 1:  Purpose 

This document describes the Application Programming Interface 
(API – Version 3.2.0) for OMESH’s OPM15 mesh serial modules. 
The document includes an overview of the interaction between the 
Host and OPM15 (the Module) as well as a list of API functions. 
 

Section 2:   Interface and Definitions 

All communications between the Module and the Host are through a two/four line serial 
interface. Always wait for the response from the Module after writing a command to 
it; and take further actions immediately after having received a successful response. 

If the Module does not give a relevant response to a command within 5ms time, the Host 
shall resend the command until it gets either a successful or a failure response. If the Host 
needs to write bytes to the Module after a command response, the Host should do so within 
0.5 second time; otherwise the command will time-out at the Module. 
By default, the baud-rate of the Module serial interface is 9,600, with no parity or flow 
control. It is recommended to configure the baud-rate to 230,400 or higher in data 
communications by using the command in Section 3.34. When there is a RS232-TTL on 

board that converts the UART serial to RS232 DB9 port, the operation could result in board 
voltage fluctuation and slightly affect radio performance. 
 
The set of defined commands and events are listed in below: 

 
#define COMMAND_RESET         

 

0x00 

#define COMMAND_SLEEP          

 

0x01 

#define COMMAND_CONFIG 

 

 

0x0B 

#define COMMAND_GETSTATE     

 

0x02 

#define COMMAND_BROADCAST    

 

0x03 

#define COMMAND_UNICAST        

 

0x04 

#define COMMAND_SETADDR       

 

0x05 

#define COMMAND_GETADDR      

 

0x06 

#define COMMAND_READCALI     

 

0x07