Assuming that 485 two lines in the raspberry pie pin number 10, 11
After reading data in the database, case will be better, have a ready-made code

CodePudding user response:

Using a standard serial port ah GPIO 14/15


https://zhuanlan.zhihu.com/p/38853178

CodePudding user response:

reference 1st floor tianfang response:

using a standard serial port ah GPIO 14/15


https://zhuanlan.zhihu.com/p/38853178

MODBUS protocol, isn't it

CodePudding user response:

Use USB transfer 485 serial debugging tools, general electric meter is to support the modbus agreement, then you can use django server setup, after collecting data stored in the database directly