Changes between Version 61 and Version 62 of gsc


Ignore:
Timestamp:
08/26/2020 08:38:30 PM (2 years ago)
Author:
Tim Harvey
Comment:

limit references to outdated gsc-input driver

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  • gsc

    v61 v62  
    453453An example of when you would want to use the pushbutton gpio is if you want to do something like determine if the user pushbutton has been held for a certain amount of time. This type of event is not available via the GSC interrupts because it involves starting a timer on a button-down event and counting the time expired before any button-up event occurs.
    454454
    455 The Linux kernel gpio-keys and gpio-keys-polled (and OpenWrt [wiki:OpenWrt/gpio#button-hotplug-gw gpio-button-hotplug]) drivers can be used to create Linux Input events from pushbuttons connected to GPIO's however if you want this functionality, you can use the gsc-input driver which is already enabled in the Gateworks BSP's. Note that the gpio-keys/gpio-keys-polled/gpio-button-hotplug drivers use the pushbutton gpio in a kernel driver therefore you can not export the gpio to userspace, where-as the gsc-input driver uses GSC interrupts for its information and therefore does not take control over the gpio.
     455The Linux kernel gpio-keys and gpio-keys-polled (and OpenWrt [wiki:OpenWrt/gpio#button-hotplug-gw gpio-button-hotplug]) drivers can be used to create Linux Input events from GPIO events and interrupt events.
    456456
    457457BSP Specific Notes: