Thank you Andrew! I think your answer is from eCos application programmer's view, I want to know tick handler function from system designer/developer point of view.
For example in the example which you gave at http://ecos.sourceware.org/docs-latest/user-guide/clocks-and-alarm-handlers.html I initialize alarm and it will be called whenever it reaches given clock ticks. In this case cyg_alarm_initialize(test_alarmH, cyg_current_time()+1, 1); I'm just creating timer with the period of one tick and asking re-trigger this alarm periodically. If I run this example (at clocks-and-alarm-handlers.html) on my i386 board, it works fine, but there is some function which is receiving hardware ticks and making all eCos alarms to work. What is that function? Maybe I can paraphrase my question simple as: which function in eCos kernel is handling hardware clock tick (or clock tick interrupts) ? 2009/7/19 Andrew Lunn <[email protected]>: >> 2) Where should I specify (some assembler file...) which function to >> call on each heartbeat? > > Take a look at: > > http://ecos.sourceware.org/docs-latest/user-guide/clocks-and-alarm-handlers.html > > Call > cyg_alarm_initialize(test_alarmH, cyg_current_time()+1, 1); > > and you alarm function will be called every tick. > > Andrew > -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
