AqHome Node Operating System ============================ This is a very simple operating system for AVR nodes using ATtiny and ATmega MCUs. It doesn't use administration objects in RAM, it just defines some routine calls which have to be added into the system to add new drivers and modules. The following routine types are defined: Function Description required add to file INIT init module/app yes modules_init.asm or apps_init.asm RUN called from the main loop no modules_run.asm or apps_run.asm MSGRECVD called when new messages arrive no modules_msg.asm or apps_msg.asm EVERY100MS called every 100 millisecs (system timer tick) no modules_100ms.asm or apps_100ms.asm EVERY1S called every second no modules_1s.asm or apps_1s.asm EVERY1M called every minute no modules_1m.asm or apps_1m.asm EVERY1H called every hour no modules_1h.asm or apps_1h.asm EVERY1D called every day no modules_1d.asm or apps_1d.asm Not all modules implement all those functions. Some modules only need to be called once every main loop, others need to be called periodically every once in a while. If a module implements a function a call to that routine must be inserted into the appropriate file in "avr/devices/all/". In order to make it easier for devices to optionally include modules/apps those calls need to be between preprocessor directives like in: ----------------------------------X8 #ifdef MODULES_DS18B20 bigcall Ds18b20_OnEverySecond #endif ----------------------------------X8 This way it is very easy to use a module (like that DS18B20 module) by using the following line in your main code: ----------------------------------X8 #define MODULES_DS18B20 ----------------------------------X8 This enables all the function calls for this module. Nothing else needs to be changed in your main code file in order to enable that module.