200220 DC-DC Buck converter UART

[Mitchel June 16, 2017 at 10:27 pm Post count: 0]

#18661 Reply |

The manual for 200220 says there is a reserved port for computer communication. Is this the UART port? How could a computer be connected to this device?

Thanks

[DrokKeymaster June 19, 2017 at 9:51 am Post count: 2971]

#18718 Reply |

Hello Mitchel,
Yes, there is a UART port. you need to connect computerand #200220 with USB to TTL cable.
Best regards.

[Mitchel June 19, 2017 at 1:22 pm Post count: 0]

#18724 Reply |

Ok, thanks. I do have all that, do you have any more information on how to communicate with it? What settings does it use?

Thanks

[DrokKeymaster July 2, 2017 at 10:09 am Post count: 2971]

#19132 Reply |

Hello Mitchel,
We think you may need a communication protocol.
200220
Best regards.

[Mitchel July 2, 2017 at 12:52 pm Post count: 0]

#19140 Reply |

Yes, that’s very helpful. Thank you!

[Mitchel July 3, 2017 at 6:29 pm Post count: 0]

#19157 Reply |

Unfortunately, I got stuck again. I’ve tried using the commands from that communication protocol, but I can’t get any response. I would assume it is 9600 8N1, but I’ve tried many different baud rates and settings. Could you tell me what the baud rate, data bits, parity, and stop bits should be set to?

Thanks

[DrokKeymaster July 5, 2017 at 7:44 am Post count: 2971]

#19237 Reply |

Hello Mitchel,
The factory default baud rate is 9600 bps.We are sorry we forget to state it.
As for other setting, we can’t ensur what setting is suitable for you,so we can’t give you an accurate answer. Hope you can understand.
Best regards.

[Mitchel July 6, 2017 at 8:55 pm Post count: 0]

#19294 Reply |

Thanks again. I was able to get it working at 9600 8N1.

Notes:
– UART pin labels (RX/TX) are opposite from what I expected. The pin labelled RX is actually the TX pin on the MCU and vice versa.
– Commands must be prefixed with a colon. This is a bit unclear in the document.
– Auto power-on state doesn’t read properly. It always returns 0, indicating that auto power-on is disabled.

Example communication:

:wo0
#wook
:wo1
#wook
:wu1000
#wuok
:wi0100
#wiok
:wl1
#wlok
:wl0
#wlok
:ru
#ru00000001000
:ri
#ri00000000000
:rt
#rt00000000003
:rc
#rc00000000000
:rv
#rv00000001000
:ra
#ra00000000100
:ro
#ro00000000001

[DrokKeymaster July 7, 2017 at 10:04 am Post count: 2971]

#19308 Reply |

Hello Mitchel,
It’s glad you have made it work.
Thanks for your sharing
Best regards.

[James September 24, 2017 at 1:22 pm Post count: 0]

#22323 Reply |

Hi Andrew, are you using a computer or micro controller (Arduino) to communicate the Buck UART port?

[Jim Beans September 25, 2017 at 6:53 pm Post count: 0]

#22333 Reply |

Hi Drok support — does this also work for the US200150 boost converter, too?  Or just the buck converter? Thank you.

[Andrew September 25, 2017 at 10:47 pm Post count: 0]

#22334 Reply |

Hi James,

I’m trying both. I’ve only been able to get it working (slightly) with the arduino.

I’ve written commands to the buck converter and it reads them. When I send “:wu0700\r\n” as bytes it sets the voltage to 7 V, however, I am still not able to read any feedback (as far as I can tell). Like in the example, I haven’t been able to read in “#wuok”.

Thanks,

Andrew Allen

[Chase Phantom October 30, 2018 at 6:55 pm Post count: 0]

#35185 Reply |

The original link to the 200220 protocol is no longer valid (404 error). Do you have an updated link?

Thanks

[DrokKeymaster October 31, 2018 at 8:42 am Post count: 2971]

#35186 Reply |

Hello Chase Phantom,

Here is the link: https://www.droking.com/cs/wp-content/uploads/2017/07/200220.docx

Best regards.

[Omar Ahmad February 20, 2019 at 2:17 am Post count: 0]

#35543 Reply |

Hey can anyone here help me in regards to getting an Arduino to send commands to this device?

The rx,tx and gnd pins are connected and I just want to know how to properly send commands such as :wu1000 and :ru

void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
Serial.write(“:ru”);

}

Is the above the correct way to send a specific command? Whenever I try sending commands via the serial monitor its returning the ascii value of what i sent.

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