Behavior of Setial1
Posted: Sat Apr 17, 2021 6:31 pmI have a project that outputs to a simple display.
The output is ASCII, Display address and a Command.
I have it working with Serial.Swap() but want to add another Serial device.
The display does not return anything so I tried Serial1.
I cannot get it to accept commands.
Logic Analyzer of Serial1
Logic Analyzer of Serial
The idle state of Serial1 in inverted.
Is there a way to fix this, the display complains.
Logic Analyzer is connected directly to the pins of a ESP8266 NodeMCU, no chips or logic.
Thanks.
Tim
The output is ASCII, Display address and a Command.
I have it working with Serial.Swap() but want to add another Serial device.
The display does not return anything so I tried Serial1.
I cannot get it to accept commands.
Logic Analyzer of Serial1
Logic Analyzer of Serial
The idle state of Serial1 in inverted.
Is there a way to fix this, the display complains.
Code: Select all
void setup() {
Serial.begin(38400,SERIAL_8N2);
Serial1.begin(38400,SERIAL_8N2);
}
String Message = "*0011DCMETH 911";
void loop() {
Serial.flush();
Serial.swap();
Serial.print(Mess + "\n");
Serial.flush();
Serial.swap();
Serial1.print(Mess + "\n");
delay(1000);
}
Logic Analyzer is connected directly to the pins of a ESP8266 NodeMCU, no chips or logic.
Thanks.
Tim