Find the project description at www.aandewiel.nl (not yet but soon).
This library gives an interface between your own program and the I2C_RotaryEncoder.
To use it you have to include this library in your sketch
#include <I2C_RotaryEncoder.h>
Declare an Encoder object (declare one for every I2C_RotaryEncoder):
I2CRE Encoder1; // Create instance of the I2CRE object
Create a interrupt service routine:
#ifdef ARDUINO_ARCH_ESP8266
#define ISR_PREFIX ICACHE_RAM_ATTR
//#define BUILTIN_LED 2
#define _INTERRUPTPIN 12
#elif ARDUINO_ARCH_AVR
#define ISR_PREFIX
#define BUILTIN_LED 13
#define _INTERRUPTPIN 3
#elif ARDUINO_ARCH_SAM
#define ISR_PREFIX
#define BUILTIN_LED 13
#define _INTERRUPTPIN 3
#else
#error "Don't know what type of board this is ..."
#endif
volatile bool interruptPending = false;
ISR_PREFIX void handleInterrupt()
{
interruptPending = true;
}
And in your setup() function attach the _INTERRUPT_PIN to this ISRoutine:
pinMode(_INTERRUPTPIN, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(_INTERRUPTPIN), handleInterrupt, FALLING);
In the main loop() function handle interruptPending.
void loop()
{
if (interruptPending) {
interruptPending = false;
if (Encoder1.isRotValChanged() ) {
Serial.print("Request Value of ROTARY [");
rotVal = Encoder1.getRotVal();
Serial.print(rotVal);
Serial.println("]");
}
if (Encoder1.isButtonPressed() ) {
Serial.println("-------> Button Pressed ");
}
if (Encoder1.isButtonQuickReleased() ) {
Serial.println("-------> Quick Release");
}
if (Encoder1.isButtonMidReleased() ) {
Serial.println("-------> Mid Release);
}
if (Encoder1.isButtonLongReleased() ) {
Serial.println("-------> Long Release);
}
}
} // loop()
The library gives you the following setters:
| Setter | Returns | Parms | Description |
|---|---|---|---|
| setRotVal() | bool | int16_t | set the value of the Rotary Encoder (-5000 .. + 5000) |
| setRotStep() | bool | int16_t | set the rotary Step (1 .. 50) |
| setRotMin() | bool | int16_t | set the Minimum rotary value (-5000 .. +5000) |
| setRotMax() | bool | int16_t | set the Maximum rotary value (-5000 .. +5000) |
| setRotSpinTime() | bool | uint8_t | set the Rotary Spin thime value (2 .. 100 milli seconds) |
| setRGBcolor() | bool | uint8_t, uint8_t, uint8_t | set the color of all 3 leds Red, Green, Blue (0 .. 255, 0 .. 255, 0 .. 255) |
| setRGBcolor() | bool | uint32_t | set the RGB color of all 3 leds (0x000000 .. 0xFFFFFF) |
| setLedRed() | bool | uint8_t | set the PWM value of the Red led (0 .. 255) |
| setLedGreen() | bool | uint8_t | set the PWM value of the Green led (0 .. 255) |
| setLedBlue() | bool | uint8_t | set the PWM value of the Blue led (0 .. 255) |
| setDebounceTime() | bool | uint8_t | set the Debounce Time of the switch (5 .. 250 micro seconds) |
| setMidPressTime() | bool | uint16_t | set the Mid Press Time of the switch (100 .. 5000 milli seconds) |
| setLongPressTime() | bool | uint16_t | set the Long Press Time of the switch (300 .. 10000 milli seconds) |
| setModeSetBit() | bool | uint8_t | set the Mode Bit (STNG_HWROTDIR | STNG_FLIPMODE | STNG_TURNMODE) |
| setModeClearBit() | bool | uint8_t | clears the Mode Bit (STNG_HWROTDIR | STNG_FLIPMODE | STNG_TURNMODE) |
| setI2Caddress() | bool | uint8_t | set a new I2C address for this Slave (1 .. 127) |
| writeCommand() | bool | uint8_t | write a command to the Slave (CMD_READCONF | CMD_WRITECONF | CMD_REBOOT) |
The library gives you the following getters:
| Getter | Returns | Parms | Description |
|---|---|---|---|
| getStatus() | uint8_t | none | reads the status byte |
| getRotVal() | int16_t | none | read the value of the rotary (-5000 .. +5000) |
| getRotStep() | int16_t | none | read the rotary Step (1 .. 50) |
| getRotMin() | int16_t | none | read the minimum rotary value (-5000 .. +5000) |
| getRotMax() | int16_t | none | read the maximum rotary value (-5000 .. +5000) |
| getRotSpinTime() | uint8_t | none | read the rotary spin time (2 .. 100 milli seconds) |
| getWhoAmI() | int8_t | none | read the Address Register |
| getLedRed() | uint8_t | none | read the current Red led PWM value (0 .. 255) |
| getLedGreen() | uint8_t | none | read the current Green led PWM value (0 .. 255) |
| getLedBlue() | uint8_t | none | read the current Blue led PWM value (0 .. 255) |
| getDebounceTime() | uint8_t | none | read the Debounce Time of the switch (5 .. 250 micro seconds) |
| getMidPressTime() | uint16_t | none | read the Mid Press Time of the switch (100 .. 5000 milli seconds) |
| getLongPressTime() | uint16_t | none | read the Long Press Time of the switch (300 .. 10000 milli seconds) |
| getMajorRelease() | uint8_t | none | read the Major Firmware Release byte (0 .. 255) |
| getMinorRelease() | uint8_t | none | read the Minor Firmware Release byte (0 .. 255) |
| getModeSettings() | uint8_t | none | read the Mode register byte (0 .. 255) |
| getModeSettings() | bool | uint8_t | read the Mode register byte and test against (STNG_HWROTDIR | STNG_FLIPMODE | STNG_TURNMODE) |
And the library gives you the following helpers:
| Helper | Returns | Parms | Description |
|---|---|---|---|
| isRotValChanged() | bool | none | true if the Rotary Value has changed |
| isRotValChangedUp() | bool | none | true if the Rotary Value > previous value |
| isRotValChangedDown() | bool | none | true if the Rotary Value < previous value |
| isButtonPressed() | bool | none | true if the Button is pressed |
| isButtonQuickReleased() | bool | none | true if the Button is released before midPressTime |
| isButtonMidReleased() | bool | none | true if the Button is released between midPressTime and longPressTime |
| isButtonLongReleased() | bool | none | true if the Button is released after longPressTime |
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