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neu-rah / PCINT

Yet another Arduino PCINT library
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ATmega2561 Conflict - PCINT #2

Closed janioanselmo closed 6 years ago

janioanselmo commented 6 years ago

Good afternoon, I made a small change in the library - "pcint.h" to receive the mapping of the ATmega2561. However, I notice conflict with the library "SoftwareSerial.h", in some research, I realized that it is "common" interruption library conflicts with the library "SoftwareSerial.h". Are there any alternatives? Here's some important information:

ADD Mapping - ATmega2561:

#elif (defined (__ AVR_ATmega2561__))
    const uint8_t pcintPinMap [1] [8] PROGMEM = {{8,9,10,11,12,13,14,15}};

Package used: https://github.com/MCUdude/MegaCore

neu-rah commented 6 years ago

hi! yes, its a known problem. PCINT management cant be shared. Because this libraries have to take control of a shared handler and demultiplex the interrupt. However this library uses only 3 ports you can use software serial on a port not used by this library i think. Otherwise only using the same PCINT controller. A remote possibility would be to cascade the handler. This would be better having the software serial as the master controller because communications are timing sensitive.

janioanselmo commented 6 years ago

Hi, @neu-rah Excellent speed in response! Excellent explanation! Of course, I've only used your library and it works perfectly! Thank you. Sorry to bother you with that question. I hope my mapping to the ATmega2561 is correct. Good weekend!

neu-rah commented 6 years ago

you are welcome :D and if you wish to do a pull-request with that map I would be pleased to accept it