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reaper7 / SDM_Energy_Meter

reading SDM72 SDM120 SDM220 SDM230 SDM630 modbus energy meters from arduino (esp8266, esp32, avr)
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Wemos D1 mini after HW reset - problem with serial #48

Closed Chris125913 closed 3 years ago

Chris125913 commented 3 years ago

Hi Everyone, Hi reaper7 , I use your code to read some values from SDM72D-M. Everything works fine but after HW reset (or power off) program hangs out and transmission was stopped. Only TX led on RS458 converter lights on. The only solution I've found is to disconnect software serial D8/D7 lines from Wemod, reset Wemod, and after that connect this line. In my tests, I used the *.ino file https://github.com/reaper7/SDM_Energy_Meter/blob/master/examples/sdm_simple/sdm_simple.ino modified to read only one value from SDM72.

I have tested this at two Wemos boards.

Does someone have a similar problem? Thanks for your help

PS This my first post on GitHub so I think I didn't break any rules.

reaper7 commented 3 years ago

Did You read Initializing section of readme (note at the end of this section)? https://github.com/reaper7/SDM_Energy_Meter#initializing or Problems section about GPIO15? https://github.com/reaper7/SDM_Energy_Meter#problems

GPIO15 (D8) must be in LOW state at start (https://www.forward.com.au/pfod/ESP8266/GPIOpins/index.html) this is a ESP8266 requirement, but probably Your converter has pull-up resistors on TX/RX lines, therefore it is not possible to start ESP8266 correctly.

Chris125913 commented 3 years ago

Thanks for fast answer. I don’t how but I don’t see this note. Thanks for help. I will check it.

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Wiadomość napisana przez reaper7 notifications@github.com w dniu 13.11.2020, o godz. 18:42:

Did You read Initializing section of readme (note at the end of this section)? https://github.com/reaper7/SDM_Energy_Meter#initializing GPIO15 (D8) at start must be at LOW state (https://www.forward.com.au/pfod/ESP8266/GPIOpins/index.html) this is a ESP8266 requirement, but probably Your converter has pull-up resistors on TX/RX lines, therefore it is not possible to start ESP8266 correctly.

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Chris125913 commented 3 years ago

Hi all. I checked this and I found my bug. You have the right reaper7. Now my Wemod is collecting data from three sdm meters and all working perfectly. THX a lot

reaper7 commented 3 years ago

@Chris125913 - I'm always right...with a few exceptions, when I'm wrong ;) so...please close this issue Good luck!