It seems that M5Cardputer.BtnA becomes null once any function from M5Cardputer.Power gets called

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I tried my best but couldn’t find any reason why that would be. Does anyone know how to avoid this problem?

Even without running an M5Cardputer.Power-related function, just the presence of that line of code in the file turns M5Cardputer.BtnA into null (invalid pointer).

Getting the memory address of M5Cardputer.Power is not enough to trigger the issue. A function from Power has to be called (like getBatteryCurrent or getBatteryLevel)

Some functions (like M5Cardputer.Power.getType()) does not cause any issue.

Attached below is the simplest possible proof of concept. This will crash even before printing PRESSED or NOT PRESSED. That’s because M5Cardputer.BtnA is a null / invalid pointer. However, removing the line with getBatteryLevel will not cause BtnA to turn into a null pointer (yes, even though it’s after the line that uses BtnA). Really weird.

It seems that this only happens on PlatformIO, and not on Arduino IDE. That’s even more weird.

#include "M5Cardputer.h"

void setup() {
    Serial.begin(115200U);
    auto cfg = M5.config();
    M5Cardputer.begin(cfg);
}

void loop() {
    M5Cardputer.update();    

    bool pressed = M5Cardputer.BtnA.wasPressed();
    Serial.println(pressed ? "PRESSED" : "NOT PRESSED");

    int bat = M5Cardputer.Power.getBatteryLevel();
    Serial.println(bat);

    delay(1000);
}

Here is my platformio.ini in case it helps. I removed lines that I think might be irrelevant to the proof of concept above.

[platformio]
default_envs = m5stack-stamps3

[env:m5stack-stamps3]
platform = espressif32
board = m5stack-stamps3
framework = arduino
monitor_speed = 115200
board_build.f_cpu = 240000000L
board_build.f_flash = 80000000L
board_build.partitions = partitions.csv

build_flags =
    -DESP32S3
    -DARDUINO_USB_CDC_ON_BOOT=1
    -DARDUINO_USB_MODE=1

lib_deps =
    M5Unified=https://github.com/m5stack/M5Unified
    M5Cardputer=https://github.com/m5stack/M5Cardputer