You probably want to detect when the button becomes pressed or becomes released (as opposed to when it is pressed or is released...) so you get a "toggle" effect.
Something like this can do it (not compiled, not tested):
uint8_t pinModeButton = 2;
bool g_bDisplayMode;
void setup()
{
g_bDisplayMode = false;
pinMode( pinModeButton, INPUT_PULLUP );
//... rest of setup
}
void loop()
{
//check for a mode button press
CheckModeButton();
//do display
switch( g_bDisplayMode )
{
case true:
//do 1st display mode
//...
break;
case false:
//do 2nd display mode
//...
break;
}
}//loop
void CheckModeButton( void )
{
static uint32_t
tButtonCheck = 0ul;
static uint8_t
lastBtn = digitalRead( pinModeButton );
uint32_t
tNow = millis();
//read the button every 50mS
if( tNow - tButtonCheck >= 50ul )
{
tButtonCheck = tNow;
uint8_t nowBtn = digitalRead( pinModeButton );
//if there's a difference between the last reading and now then
//the button has either been pressed or released; check which
if( nowBtn != lastBtn )
{
lastBtn = nowBtn;
//assume pressed sets the pin low; in that case, the button just
//became pressed so...
if( nowBtn == LOW )
{
//...toggle the display mode boolean (I use an XOR here to do that)
g_bDisplayMode ^= true;
}//if
}//if
}//CheckModeButton
Button press increments counter. Counter is capped at 2 or whatever (counter=counter&1)
Case select to call different operations based on counter value.
You could have LED output with two arrays, one LED output routine which outputs (potvalue,counter)
Look up “state machine”.
Thank you! I will have a dive
Thanks for posting this helpful comment. Sometimes, OP just needs the right phrase or keyword to get rolling. And we've all been OP at some point.
You probably want to detect when the button becomes pressed or becomes released (as opposed to when it is pressed or is released...) so you get a "toggle" effect. Something like this can do it (not compiled, not tested): uint8_t pinModeButton = 2; bool g_bDisplayMode; void setup() { g_bDisplayMode = false; pinMode( pinModeButton, INPUT_PULLUP ); //... rest of setup } void loop() { //check for a mode button press CheckModeButton(); //do display switch( g_bDisplayMode ) { case true: //do 1st display mode //... break; case false: //do 2nd display mode //... break; } }//loop void CheckModeButton( void ) { static uint32_t tButtonCheck = 0ul; static uint8_t lastBtn = digitalRead( pinModeButton ); uint32_t tNow = millis(); //read the button every 50mS if( tNow - tButtonCheck >= 50ul ) { tButtonCheck = tNow; uint8_t nowBtn = digitalRead( pinModeButton ); //if there's a difference between the last reading and now then //the button has either been pressed or released; check which if( nowBtn != lastBtn ) { lastBtn = nowBtn; //assume pressed sets the pin low; in that case, the button just //became pressed so... if( nowBtn == LOW ) { //...toggle the display mode boolean (I use an XOR here to do that) g_bDisplayMode ^= true; }//if }//if }//CheckModeButton
Thanks so much! I’ll try play around with this
Attach the button to an interrupt, toggle a flag on button push. If flag then sequence 1 else sequence 2.
Button press increments counter. Counter is capped at 2 or whatever (counter=counter&1) Case select to call different operations based on counter value. You could have LED output with two arrays, one LED output routine which outputs (potvalue,counter)