Hello @M5Judea further investigation and tests indicate that in your case the incorrect line mode to access PSRAM is used, e.g. opi instead of qspi. I can force the same error in my setup by forcing line mode opi. That said, the line mode is normally defined via board selection. So my best guess would be that you might have selected the incorrect board? Please double check that you have selected the proper board in your IDE. Thanks Felix

I have a similar issue. My UHF RFID reader (JRD 4035) wont work on the Atom lite. I have been tinkering all day with no luck. Maybe the example code provided is outdated?

@jonsar JST 2.0 connectors, commonly called 'Grove' and available through M5Stack!

@cairnus how to mark text as code: Start a blank line with three back-quotes ` (upper left of the keyboard, below the tilde) #include <AccelStepper.h> int pin_en = 5; int pin_direction = 7; int pin_step = 6; int pin_reset = 39; int pin_voltage = 8; int pin_fault = 38; int microstep = 1; end with a blank line and three back-quotes as well. cheers!

Hello @jarkman I am afraid I am out of ideas at this point in time. Sorry. Thanks Felix

OK, I figured this out. Turns out my Arduino [Partition Scheme] setting was incorrect. I had a setting of [Default 4MB with spiffs (1.2MB APP/1.5mn SPIFFS] instead of.... [8M with spiffs (3MB APP/1.5MB SPIFFs] Now after the sketch upload, I get Sketch uses 1265261 bytes (37%) of program storage space. Maximum is 3342336 bytes.

Thanks guys adding the build flags fixed the blank serial terminal in PlatformIO.

Hello @HappyUser it is correct that M5StampC3 is supported by M5Unified library, but I can confirm that the library currently doesn't compile due to errors in Mic_Class.cpp and Power_Class.cpp. I suspect that since there isn't much to gain from using a library like M5Unified for a stamp product (as @teastain already mentioned), M5Stack engineers aren't that alert in keeping the library updated. Thanks Felix

@robski said in M5StickC Plus 2 Official Arduino Samples Not Working: does your stick loads ok with latest M5Burner firmware? Is user demo from M5Burner works? I can confirm that arduino M5stickCplus2 examples do work as had them in recently. Display, IR, Rtc, Battery, IMU, I've used Arduino 2.3.2, be sure you pick M5Stick Plus2 The two official images "M5stickCplus2 UserDemo V.0.1" and "UIFlow_StickC_Plus2 V.1.13.2" work correctly. I have also tried other custom images dedicated to the Plus 2, but the only one that boots correctly is Marauder. All sketches executed from Arduino 2 do not boot, and the screen does not turn on. I suspected some power management issue or something related to the LED, but I cannot explain why the demo is working in that case. I downloaded the latest M5Burner tool. What you mean with M5Burner firmware?

@felmue thank you for making me aware of that thread! The information contained within worked like a charm!

@lukes said in C++ syntax question - Defining an object in a class that requires arguments?: HardwareSerial Maybe this solves your problem ... class StaticClass { private: int myContent; public: StaticClass(int v){myContent = v;} void printout(){printf("%d\n",myContent);} }; class TestClass { public: //StaticClass myClass = StaticClass(42); // With C11 StaticClass myClass; TestClass() : myClass(42) { } void doit() { myClass.printout(); } }; int main(void) { TestClass tc; tc.doit(); }

@abraxas My Pleasure! -Terry

@brainzilla I am not familiar with Platfomio, but the info you need is here: https://docs.m5stack.com/en/core/M5StampS3 PIN1.27

Hello guys please see my comment here for a possible explanation and solution. Thanks Felix

Thank you. your help was very precious. now it works great.