Changes between Version 4 and Version 5 of pic_device_api


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Timestamp:
Jan 22, 2020, 4:12:07 PM (4 years ago)
Author:
alain
Comment:

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  • pic_device_api

    v4 v5  
    99The max number of input IRQs is defined by the CONFIG_IRQ_PIC_MAX parameter. The actual number of connected IRQs is defined in the ''arch_info'' file, and stored in the PIC device extension. 
    1010
    11 The "source" device for each input IRQ is also defined in the ''arch_info'' file, and are stored in the ''devices_irq'' global variable in the kernel initialization phase.
     11The "source" device for each input IRQ is also defined in the ''arch_info'' file. This information is stored in the ''devices_irq'' global variable in the kernel initialization phase.
    1212
    1313This external peripheral does not execute I/O operations, but is just acting as a dynamically configurable interrupt router for another I/O operation. Therefore, ALMOS-MK does not use the PIC device waiting queue, but call directly the PIC driver blocking functions to dynamically configure the PIC component.