My first post here and i'm hoping someone might be able to point me in the right direction.
what i'm trying to achieve (badly if i say so myself)
starting with a value of zero for "a"
to input a number using the serial monitor (this will hopefully later come from a analog input)
then step to that number ...then be able to enter another number and step from the previous to the new number.
I thought i could do this by passing a to b ..but obviously that don't work
i've been banging my head for a while....and can't even work out if this is an easy thing or a hard thing ...don't even know what the procedure would be called so i don't know what to search for
any pointers would be great.....as i'm old and my brain has stopped working
thanks for reading
merry Christmas
here's where i'm at
int a = 100;
int b = 20;
void setup() {
Serial.begin(115200);
}
void loop() {
if (Serial.available()>0){int a = Serial.parseInt();Serial.println(a); // reads from serial monitor
if (a < b){Serial.println("positive up");
do {a++; Serial.println(a); delay (20);} while(a != b); Serial.println("+++"); }
if (a > b){Serial.println("negative down");
do {a--; Serial.println(a); delay (20);} while(b != a); Serial.println("---");}
b = a;
}
}
int a = 100;
int b = 100;
void setup() {
Serial.begin(115200);
}
void loop() {
if (Serial.available()>0){int a = Serial.parseInt();Serial.println(a); // reads from serial monitor
for(int a = 0; a < b; a++){Serial.println(a);}
// if (a < b){Serial.println("positive up");
//do {a++; Serial.println(a); delay (20);} while(a != b); Serial.println("+++"); }
// if (a > b){Serial.println("negative down");
// do {a--; Serial.println(a); delay (20);} while(b != a); Serial.println("---");}
b = a;
}
}
Aside from the horrid layout, what is wrong with your code? It does something, including printing serial output.
You want it to do something. Clearly if those two somethings were the same thing, you wouldn't be here asking for help. So, I think it's safe to assume that the code does not do what you want.
However, you've failed to describe what it actually does, what output you get, and how that differs from what you want.
I had a complete brain freeze which you helped unfreeze
but now have it working was chasing "a" rather than "b"
int a = 0;
int b = 0;
void setup() {
Serial.begin(115200);
}
void loop() {
if (Serial.available()>0){int a = Serial.parseInt();
if (a > b){do {b++; Serial.println(b); delay (20);} while(a != b);}
if (a < b){do {b--; Serial.println(b); delay (20);} while(a != b);}
}
}