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knowledgebase:arduinoide [2017/11/29 14:27]
rolex 		knowledgebase:arduinoide [2017/12/12 11:57]
rolex
Zeile 7: Zeile 7:
  
 == Control Structures == == Control Structures ==
-| if (expression A) {do thing A} | +| if (expression A) {do thing A} | Do thing A if expression A is true | 
-Do thing A if expression A is true// +| else if (expression B) {do thing B} | Do thing B if expression A is false and expression B is true |  
-  else if (expression B) {do thing B} +| else {do thing C} | Do thing C if all the above "if" and "else if" blocks are false |  
-Do thing B if expression A is false and expression B is true//  +| for(int x = 0; x < 100; x++){println(x)} | Set x to 0, then while x is less than 100, print X and increment x by 1 | 
-  else {do thing C} +| while(statement){expression} | Keep doing expression while statement is true | 
-Do thing C if all the above "if" and "else if" blocks are false//  +| do{statement}while(expression); | Like while loop, except expression is evaluated after statement runs once | 
-  for(int x = 0; x < 100; x++){println(x)} +| switch(var){case X: statement X break; case Y: statement  break;} | Run statement X or Y depending on whether var is X, Y or a different value | 
- Set x to 0, then while x is less than 100, print X and increment x by 1 +| break; | Exit a for, while, do while loop or switch statement | 
-while(statement){expression} +| continue; | Skip rest of current iteration of for, while, or do while loop, start next iteration | 
- Keep doing expression while statement is true +| return value; | Terminate the function and optionally return value to the function that called it | 
-do{statement}while(expression); +| goto label; |Send the program flow to `label:` | 
- Like while loop, except expression is evaluated after statement runs once + 
-switch (var) {case 1: statement A break; case 2: statement B break; default: statement C break} +== Comparison Operators == 
- Run statement A, B or C depending on whether var is 1, 2 or a different value +| == | Equals | 
-break; +| != | Is not equal to | 
- Exit a for, while, do while loop or switch statement +| < | Less than | 
-continue; +| > |Greater than | 
- Skip rest of current iteration of for, while, or do while loop, start next iteration +| <nowiki> <= </nowiki> | Less than or equal to | 
-return value; +| >= | Greater than or equal to | 
- Terminate the function and optionally return value to the function that called it + 
-goto label; +== Boolean Operators == 
- Send the program flow to `label:` +| && | And | 
-Comparison Operators +| <nowiki> || </nowiki> | Or | 
-== +| ! | Not | 
- Equals + 
-!= +== Bitwise Operators == 
- Is not equal to +| & | And | 
-< +| <nowiki> | </nowiki> | Or | 
- Less than +| ~ | Not | 
-> +| << | Bitshift left | 
- Greater than +| >> | Bitshift right | 
-<= + 
- Less than or equal to +== Compound Operators == 
->= +| x ++ | x=x+1 | 
- Greater than or equal to +| x -- | x=x-1 | 
-Boolean Operators +| x +=y | x=x+y | 
-&& +| x -=y | x=x-y | 
- And +| x *=y | x=x*y | 
-|| +| x /=y | x=x/y | 
- Or +| x %=y | x=the remainder of x/y | 
-! +| x &=y | x=x&y | 
- Not + 
-Bitwise Operators +== Constants == 
-& +| HIGH/LOW | Pin input or output voltage is high or low | 
- And +| true/false | Boolean values | 
-| +| LED_BUILTIN | Pin where built-in LED is connected | 
- Or +| pinMode(pin, mode) | Set pin to either INPUT, OUTPUT, or INPUT_PULLUP | 
-^ +| digitalWrite(pin,value) | Set pin to either HIGH or LOW| 
- Xor +| digitalRead(pin) | Read value of pin, which will be HIGH or LOW | 
-~ +| analogReference(type) | Configure refence voltage used for analog input | 
- Not +| analogRead(pin) | Return input voltage of pin as integer between 0 and 1023 | 
-<< +| analogWrite(pin,value) | Output PWM wave to pin with duty cycle of value (between 0 and 255) | 
- Bitshift left + 
->> +== Math == 
- Bitshift right +| min(x,y) | Return the smaller of x or y | 
-Compound Operators +| max(x,y) | Return the greater of x or y | 
-x ++ +| abs(x) | Absolute value of x | 
- x = x + 1 +| constrain(x,a,b) | Limit x to the range a-b, return a or b if x is too small or too large | 
-x -- +| map(value,fromLow,fromHigh,toLow,toHigh) | Map value from one range of numbers to another | 
- x = x - 1 +| pow(a,x) | Calculate a to the power of x | 
-x += y +| sqrt(x) | Square root of x | 
- x = x + y +| sin(x) / cos(x) / tan(x) | Sine, cosine and tangent of x | 
-x -= y +| randomSeed(x) | Start the pseudo-random number generator at point x | 
- x = x - y +| random(min,max) | Generate a pseudo-random number between min (inclusive) and max (exclusive) | 
-x *= y + 
- x = x * y +== Time == 
-x /= y +| millis() | Return milliseconds since program started | 
- x = x / y +| micros() | Return microseconds since program started | 
-x %= y +| delay(n) | Pause program for n milliseconds | 
- x = the remainder of x / y +| delayMicroseconds(n) | Pause program for n microseconds | 
-x &= y + 
- x = x & y +\\ 
-x |= y +\\ 
- x = x | y +mehr auf [[https://www.arduino.cc/reference/en/ | Arduino Reference ]] oder in unseren Arduino Workshops
-Constants +
-HIGH / LOW +
- Pin input or output voltage is high or low +
-true / false +
- Boolean values +
-INPUT / INPUT_PULLUP / OUTPUT +
- Configure pin to sample voltage or provide current to other circuits +
-LED_BUILTIN +
- Pin where built-in LED is connected +
-I/O +
-pinMode(pin, mode) +
- Set pin to either INPUT, OUTPUT, or INPUT_PULLUP +
-digitalWrite(pin, value) +
- Set pin to either HIGH or LOW +
-digitalRead(pin) +
- Read value of pin, which will be HIGH or LOW +
-analogReference(type) +
- Configure refence voltage used for analog input +
-analogRead(pin) +
- Return input voltage of pin as integer between 0 and 1023 +
-analogWrite(pin, value) +
- Output PWM wave to pin with duty cycle of value (between 0 and 255) +
-Math +
-min(x, y) +
- Return the smaller of x or y +
-max(x, y) +
- Return the greater of x or y +
-abs(x) +
- Absolute value of x +
-constrain(x, a, b) +
- Limit x to the range a-b, return a or b if x is too small or too large +
-map(value, fromLow, fromHigh, toLow, toHigh) +
- Map value from one range of numbers to another +
-pow(a, x) +
- Calculate a to the power of x +
-sqrt(x) +
- Square root of x +
-sin(x) / cos(x) / tan(x) +
- Sine, cosine and tangent of x +
-randomSeed(x) +
- Start the pseudo-random number generator at point x +
-random(min, max) +
- Generate a pseudo-random number between min (inclusive) and max (exclusive) +
-Time +
-millis() +
- Return milliseconds since program started +
-micros() +
- Return microseconds since program started +
-delay(n) +
- Pause program for n milliseconds +
-delayMicroseconds(n) +
- Pause program for n microseconds +
-Comments +
-// stuff +
- Single-line comment +
-/* many things */ +
- Multi-line comment +
knowledgebase/arduinoide.txt · Zuletzt geändert: 2017/12/19 11:38 von rolex

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