Hi

By opening a legacy arduino project in vmicro, there are VMDPE messages on Serial Monitor like:
18:04:33.797 -> VMDPE_1:2:22539:0:247|22539_VMDPE

Those messages keep sending over even though I have removed all breakpoints and recompiled. 

What the messages mean and how to remove them?

john

Hi Simon

Thank you. I found an interesting behavior when I troubleshoot the "VMDPE issue."

Behavior of the application is different in Debug mode to Release mode.

Below please find a code snippet that I am using to read serial messages. Instead of using

Serial.readStringUntil('\n') 

, a non-blocking method is applied to read each character one-by-one on every iteration of the function. 

There is an interesting observation by running this function in an infinite loop of 250ms under FreeRTOS. The system crashed whenever I entered "wind\n" to Serial|COM3 (COM3 == Silicon labs CP210x USB port). It was OK with "acc\n" though. Please take a look at a screencapture file What_happens_in_Vmicro.png.
There are annotations on them so you know what I mean. The funniest behavior is that, it crashed whenever I entered "wind\n"  . That means, I could enter an arbitrary string like "somethingelse\n" the application just return "Command not correct, please try again." as expected.

The problem described above is solved when I change it to Release mode. 

The interesting behavior comes when I open Arduino IDE 2.0.4 and reprogram the same code to target. Everything is fine under Arduino IDE (All_OK_under_ArduinoIDE.png).



Any clue on this?

John

/*
* @brief	Get value from Serial Monitor at a sampling rate of DAQTask loop.
*/
daq_data_t DAQSimDataGet(void) {

	daq_data_t result = { 0 };
	static char inBuf[256];		///static char is mandatory to keep inBuf intact when function exits
	static uint8_t index = 0;	///don't forget it is a nonblocking function!!!

	if (Serial.available()) {
		char c = Serial.read();
		if (c != '\n') {
			inBuf[index++] = c;
		}
		else {
			inBuf[index] = '\0';
			String str = String(inBuf);
			if (str == "acc") {
				Serial.println(F("It is acc"));
			}
			else if (str == "wind") {
				Serial.println(F("it is wind"));
			}
			else {
				Serial.println(F("Command not correct, please try again."));
			}
			index = 0;
		}
	}
	return result;
}