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发表于 2024-8-1 08:27
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本帖最后由 normanlu 于 2024-8-1 08:39 编辑
根据香蕉派官方说法,万兆sfp模块pin6一般都是接地线,当一般模块插入时,立马就会拉低这个电压,所以是外部信号输入驱动。
模块插入前:
root@OpenWrt:/# cat sys/kernel/debug/gpio
gpiochip0: GPIOs 512-595, parent: platform/1001f000.pinctrl, pinctrl_moore:
gpio-512 ( |tx-disable ) in lo
gpio-513 ( |tx-fault ) in hi IRQ
gpio-514 ( |los ) in hi IRQ
gpio-515 ( |rate-select0 ) in hi ACTIVE LOW
gpio-517 ( |reset ) out hi ACTIVE LOW
gpio-524 ( |cd ) in lo IRQ ACTIVE LOW
gpio-526 ( |WPS ) in hi IRQ ACTIVE LOW
gpio-533 ( |rate-select0 ) in lo ACTIVE LOW
gpio-566 ( |los ) in hi IRQ
gpio-575 ( |blue:wps ) out lo
gpio-581 ( |tx-fault ) in hi IRQ
gpio-582 ( |tx-disable ) in lo
gpio-591 ( |green:status ) out hi
gpio-594 ( |mod-def0 ) in hi IRQ ACTIVE LOW
gpio-595 ( |mod-def0 ) in hi IRQ ACTIVE LOW
模块插入后:
root@OpenWrt:/# cat sys/kernel/debug/gpio
gpiochip0: GPIOs 512-595, parent: platform/1001f000.pinctrl, pinctrl_moore:
gpio-512 ( |tx-disable ) in lo
gpio-513 ( |tx-fault ) in hi IRQ
gpio-514 ( |los ) in hi IRQ
gpio-515 ( |rate-select0 ) in hi ACTIVE LOW
gpio-517 ( |reset ) out hi ACTIVE LOW
gpio-524 ( |cd ) in lo IRQ ACTIVE LOW
gpio-526 ( |WPS ) in hi IRQ ACTIVE LOW
gpio-533 ( |rate-select0 ) in lo ACTIVE LOW
gpio-566 ( |los ) in hi IRQ
gpio-575 ( |blue:wps ) out lo
gpio-581 ( |tx-fault ) in lo IRQ
gpio-582 ( |tx-disable ) out lo
gpio-591 ( |green:status ) out hi
gpio-594 ( |mod-def0 ) in lo IRQ ACTIVE LOW
gpio-595 ( |mod-def0 ) in hi IRQ ACTIVE LOW |
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