attachInterrupt CHANGE acts like POSEDGE not ANYEDGE

[chaeplin]

ESP-12 / pin 12 grounded with switch.

IDE 1.6.1-esp8266-1 / mac osx --> Working --> ANYEDGE
IDE 1.6.5 / mac osx( 775e9d4..49c25b9 esp8266 -> origin/esp8266) ---> NOT --> POSEDGE

---

int pin1 = 14;
volatile int state = LOW;

void setup()
{
Serial.begin(38400);
pinMode(pin1, OUTPUT);
pinMode(12, INPUT_PULLUP);
attachInterrupt(12, blink, CHANGE);
}

void loop()
{
digitalWrite(pin1, state);
//
Serial.print("state: ");
Serial.print(state);
Serial.print("\tread : ");
Serial.println(digitalRead(12));
delay(500);
}

void blink()
{
state = !state;
}

---

result
IDE 1.6.1-esp8266-1 / mac osx --> Working
IDE 1.6.5 / mac osx( 775e9d4..49c25b9 esp8266 -> origin/esp8266) ---> NOT

---

1.6.1-esp8266-1
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 1 read : 0 --> change
state: 1 read : 0
state: 1 read : 0
state: 1 read : 0
state: 1 read : 0
state: 0 read : 1 --> change
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 1 read : 0 --> change
state: 1 read : 0
state: 1 read : 0
state: 1 read : 0
state: 1 read : 0
state: 0 read : 1 --> change
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1

---

775e9d4..49c25b9 esp8266 -> origin/esp8266
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 0 read : 0 --> should be changed
state: 0 read : 0
state: 0 read : 0
state: 0 read : 0
state: 0 read : 0
state: 0 read : 0
state: 1 read : 1
state: 1 read : 1
state: 1 read : 1
state: 1 read : 0 --> should be changed
state: 1 read : 0
state: 1 read : 0
state: 1 read : 0
state: 1 read : 0
state: 1 read : 0
state: 1 read : 0
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1
state: 0 read : 0 --> should be changed
state: 0 read : 0
state: 0 read : 0
state: 0 read : 0
state: 0 read : 0
state: 0 read : 0
state: 0 read : 0
state: 0 read : 0
state: 1 read : 1
state: 1 read : 1
state: 1 read : 1
state: 1 read : 1
state: 1 read : 1
state: 1 read : 0
state: 1 read : 0
state: 1 read : 0
state: 1 read : 0
state: 0 read : 1
state: 0 read : 1
state: 0 read : 1

[rayshobby]

I second this issue: I was trying to get RC-Switch library to work with ESP8266 so that I can receive signals from a remote control. It didn't work. After debugging, it seems interrupt mode 'CHANGE' is not capturing all rising and falling edges, instead, it's capturing only one type of edge.

[hariprasadiit]

same here.CHANGE is acting like RISING.

temporary solution would be changing interrupt something like this

if(L1_rising) {
attachInterrupt(L1_STATUS_PIN, onL1StateChange , FALLING);
L1_rising=false;
}
else{
attachInterrupt(L1_STATUS_PIN, onL1StateChange , RISING);
L1_rising=true;
}

but this puts some overhead on ESP chip i think.

[vshymanskyy]

Experienced same problem.

[igrr]

Thanks for the reports, I've found the bug, fix coming up.

[chaeplin]

Test result : +1: 
---
CHANGE
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 1    read : 0 <-----
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 0    read : 1  <-----
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 1    read : 0  <-----
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 0    read : 1  <-----
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 1    read : 0  <-----
state: 1    read : 0
state: 1    read : 0
state: 0    read : 1  <-----
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1


---
RISING

state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 0
state: 0    read : 0
state: 0    read : 0
state: 0    read : 0
state: 0    read : 0
state: 1    read : 1  <-----
state: 1    read : 1
state: 1    read : 1
state: 1    read : 1
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 0    read : 1  <-----
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 0
state: 0    read : 0
state: 0    read : 0
state: 0    read : 0
state: 0    read : 0
state: 1    read : 1  <-----
state: 1    read : 1
state: 1    read : 1
state: 1    read : 1
state: 1    read : 1
state: 1    read : 1

---
FALLING

state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 1    read : 0  <-----
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 1
state: 1    read : 1
state: 1    read : 1
state: 1    read : 1
state: 1    read : 1
state: 1    read : 1
state: 1    read : 1
state: 0    read : 0  <-----
state: 0    read : 0
state: 0    read : 0
state: 0    read : 0
state: 0    read : 0
state: 0    read : 0
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 0    read : 1
state: 1    read : 0  <-----
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0
state: 1    read : 0