pzem-004t serial connection

[freedomwarrior]

Hello.
Recently got pzem-004t device and now I'm trying to connect to this device via serial and get some measurements.
But I faced the problem that I can't send commands and read values from the device and at the same time be in REPL to see some information(errors, values, etc).
I'm using this library and author said:
In the ESP8266 there is only one available UART port, thus if you use the RELP terminal is necessary to detach it for reading values from the PZEM-004T and then attach it to communicate with the terminal
So, is there some way to bypass this restriction ?

[robert-hh]

You can use webrepl for the REPL interface and detach REPL from UART with dupterm.
Webrepl: https://github.com/micropython/webrepl

[freedomwarrior]

You can use webrepl for the REPL interface and detach REPL from UART with dupterm. Webrepl: https://github.com/micropython/webrepl

Working, thank you for workaround.
But I faced with another problem, when I try to read data from pzem-004t, I got only half of data, only first 13 bytes from 25 that must be.

[robert-hh]

The buffer at the serial port has a default length of 15 bytes. You can increase that using the rxbuf option of the UART constructor of uart.init.

[freedomwarrior]

Thanks again, working like a charm.