serial monitor compared to M5.Lcd.print

[jpilarski]

I have been struggling a little trying to get the lcd to print in similar ways to a Serial.print. For example, I was trying to simply show a 1 or 0 based on wasPressed()
[CODE]
#include <M5Stack.h>
// the setup routine runs once when M5Stack starts up
void setup() {
Serial.begin(115200);
// initialize the M5Stack object
M5.begin();
M5.Lcd.drawBitmap(0, 0, 320, 240, (uint16_t *)gImage_logoM5);
delay(500);
M5.Lcd.fillScreen(BLACK);
delay(500);
delay(1000);
}
void loop(){

bool ButtonState = (M5.BtnC.isPressed());
M5.Lcd.setCursor(20, 20);
M5.Lcd.print(ButtonState);//why does it only show first value and never updates
Serial.print(ButtonState);
M5.update();
}
[/CODE]
In the serial monitor it updates as expected but on the M5 it only ever shows a 0. Why is that? I've seen in other examples there is a fillRect() function as shown below
[CODE]
#include <M5Stack.h>

int T = 0;

void setup() {
m5.begin();
// pinMode(servoPin, OUTPUT);
M5.Lcd.setBrightness(200);
M5.Lcd.setCursor(250, 215);
M5.Lcd.printf("T");
}

void loop() {
if (M5.BtnC.wasPressed())
{
T++;
M5.Lcd.fillRect(180, 50, 70, 42, 0x00);
M5.Lcd.setTextColor(0xfbe4);
M5.Lcd.setTextSize(6);
M5.Lcd.setCursor(180, 50);
M5.Lcd.print(T);
}
m5.update();
}
[/CODE]
Is M5.Lcd.fillRect() what enanbles the Lcd.print() to update. Is there a basic tutorial on using buttons to change Lcd.print() values.
By the way the M5 is really a great device.

[JJ]

@jpilarski Hi, i agree the M5Stack is indeed a really great device !

Regarding your query, you can review a list of command functions here: https://github.com/Kongduino/M5CheatSheet

Also you can review the code from this excellent working menu system by Tom Such that uses the buttons for selection: https://github.com/tomsuch/M5Stack-SAM

He also created a template program for making your own menu:
https://github.com/tomsuch/M5StackSAM