Hi all, I got it.
just need to put the line in Setup function!.


setup {

mySerial2.begin(9600,SERIAL_8N1,5,7);

}


best regards
NewPrasertKitt

Hi edje11:thank you for your help,but this Pzem still got error.
mine, version arduino is 1.8.5, what is yours

best regards
newprasertkitt

exit status 1
'Pzemserial' does not name a type

dear sir, I tried to use UART#2 and relocate RX to pin 5 and TX to pin17. anyway the compiler shows error below. Don't know what is wrong or what to include to code please help. thanks in advance. board: heltec wifi kit32 (esp32 with OLED ) best regards Newprasertkitt HardwareSerial mySerial2(2); my...

Encoder A /CLK wiring to GPIO13
Encoder B /DT wiring to GPIO14

Regards
NewPrasertKitt

rudi, krzychb thanks for your help, I use this pulse signal to test osciloscope bandwidth.


best regards
NewPrasertKitt

hello idahowalker,
could you show me how to code in arduino to direct write GPIO of ESP32. thank you.

best regards
NewPrasertKitt

Hello rudi, I did try this sample code and reconfig the timer as below timer = timerBegin(0, 2, true); timerAttachInterrupt(timer, &onTimer, true); timerAlarmWrite(timer, 2, true); timerAlarmEnable(timer); I use digitalWrite command to set and reset the GPIO but the pulse output just nothing. How to...

Rudi, thanks for your kindly help. could you tell me how to code these in arduino.

best regards
NewPrasertKitt

I tried from those codes on Google but seem they doesn't work! Is the esp32 can do that?
best regards
NewPrasertKitt