i need full code for rs485

Question

Please send the documentation, information, and sdk for developing an application for interacting with the rs485 port on the F8 device. Serial number of the device A33F008001400001

Answer 1

Switch to receive mode：

PosUtil.setRs485Status(0);

 

Call Posutil static method Setrs485status (), set the parameter value to 0, if the return value is 0, successfully switch to receive mode, if not 0 the switch fails.

Switch to send mode：

PosUtil.setRs485Status(1);

 

Call Posutil static method Setrs485status (), set the parameter value to 1, if the return value is 0 successfully switch to send mode, if not 0 the switch fails.

If you want to send or receive data,please use android common Serial port API.