Changes between Version 88 and Version 89 of gsc


Ignore:
Timestamp:
09/15/2021 09:55:11 PM (15 months ago)
Author:
Tim Harvey
Comment:

removed setting of R11=0xff for user pushbutton examples and explain

Legend:

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  • gsc

    v88 v89  
    151151
    152152For more information see [#gsc-interrupts gsc-interrupts]
     153
     154Note that you should not be altering this register if you are using the Linux GSC driver as it will enable the interrupts according to other drivers that register handlers for them. Enabling interrupt sources that have no handlers will result in interrupt storms.
    153155
    154156[=#gsc_firmware_crc]
     
    674676#!bash
    675677i2cset -f -y 0 0x20 0 0x00 # disable pushbutton hard reset
    676 i2cset -f -y 0 0x20 11 0xff # enable all interrupts
    677678}}}
    678679  * please see [#IRQ_GPIO_CHANGE here] regarding un-terminated inputs causing spurious GPIO_CHANGE events
     
    10171018The Gateworks System Controller has an interrupt signal to the host processor which it asserts when an event has occurred worth notifying the host about. The [#gsc_interrupt_enable GSC_INTERRUPT_ENABLE_0 (R11)] register defines what events can trigger an interrupt and an interrupt service routine can query the [#gsc_interrupt_status GSC_INTERRUPT_STATUS_0 (R10)] register to see what events are present. The interrupt remains asserted until all status bits are cleared by writing 0's to those bits in the [#gsc_interrupt_status GSC_INTERRUPT_STATUS_0 (R10)] register.
    10181019
     1020Note that you should not be altering the GSC_INTERRUPT_ENABLE_0 register if you are using the Linux GSC driver as it will enable the interrupts according to other drivers that register handlers for them. Enabling interrupt sources that have no handlers will result in interrupt storms.
     1021
    10191022'''GSCv3''' has an additional pair of interrupt registers represented by [#GSC_INTERRUPT_STATUS_1 GSC_INTERRUPT_STATUS_1 (R17)] and [#GSC_INTERRUPT_ENABLE_1 GSC_INTERRUPT_ENABLE_1 (R18)].
    10201023
     
    12041207#!bash
    12051208i2cset -f -y 0 0x20 0 0x00 # disable pushbutton hard reset
    1206 i2cset -f -y 0 0x20 11 0xff # enable all interrupts
    12071209}}}
    12081210  * please see [#IRQ_GPIO_CHANGE here] regarding un-terminated inputs causing spurious GPIO_CHANGE events