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90 lines
3.8 KiB
90 lines
3.8 KiB
What: /sys/bus/siox/devices/siox-X/active |
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KernelVersion: 4.16 |
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Contact: Thorsten Scherer <[email protected]>, Uwe Kleine-König <[email protected]> |
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Description: |
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On reading represents the current state of the bus. If it |
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contains a "0" the bus is stopped and connected devices are |
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expected to not do anything because their watchdog triggered. |
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When the file contains a "1" the bus is operated and periodically |
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does a push-pull cycle to write and read data from the |
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connected devices. |
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When writing a "0" or "1" the bus moves to the described state. |
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What: /sys/bus/siox/devices/siox-X/device_add |
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KernelVersion: 4.16 |
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Contact: Thorsten Scherer <[email protected]>, Uwe Kleine-König <[email protected]> |
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Description: |
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Write-only file. Write |
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<type> <inbytes> <outbytes> <statustype> |
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to add a new device dynamically. <type> is the name that is used to match |
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to a driver (similar to the platform bus). <inbytes> and <outbytes> define |
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the length of the input and output shift register in bytes respectively. |
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<statustype> defines the 4 bit device type that is check to identify connection |
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problems. |
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The new device is added to the end of the existing chain. |
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What: /sys/bus/siox/devices/siox-X/device_remove |
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KernelVersion: 4.16 |
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Contact: Thorsten Scherer <[email protected]>, Uwe Kleine-König <[email protected]> |
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Description: |
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Write-only file. A single write removes the last device in the siox chain. |
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What: /sys/bus/siox/devices/siox-X/poll_interval_ns |
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KernelVersion: 4.16 |
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Contact: Thorsten Scherer <[email protected]>, Uwe Kleine-König <[email protected]> |
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Description: |
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Defines the interval between two poll cycles in nano seconds. |
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Note this is rounded to jiffies on writing. On reading the current value |
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is returned. |
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What: /sys/bus/siox/devices/siox-X-Y/connected |
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KernelVersion: 4.16 |
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Contact: Thorsten Scherer <[email protected]>, Uwe Kleine-König <[email protected]> |
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Description: |
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Read-only value. "0" means the Yth device on siox bus X isn't "connected" i.e. |
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communication with it is not ensured. "1" signals a working connection. |
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What: /sys/bus/siox/devices/siox-X-Y/inbytes |
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KernelVersion: 4.16 |
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Contact: Thorsten Scherer <[email protected]>, Uwe Kleine-König <[email protected]> |
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Description: |
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Read-only value reporting the inbytes value provided to siox-X/device_add |
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What: /sys/bus/siox/devices/siox-X-Y/status_errors |
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KernelVersion: 4.16 |
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Contact: Thorsten Scherer <[email protected]>, Uwe Kleine-König <[email protected]> |
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Description: |
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Counts the number of time intervals when the read status byte doesn't yield the |
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expected value. |
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What: /sys/bus/siox/devices/siox-X-Y/type |
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KernelVersion: 4.16 |
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Contact: Thorsten Scherer <[email protected]>, Uwe Kleine-König <[email protected]> |
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Description: |
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Read-only value reporting the type value provided to siox-X/device_add. |
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What: /sys/bus/siox/devices/siox-X-Y/watchdog |
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KernelVersion: 4.16 |
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Contact: Thorsten Scherer <[email protected]>, Uwe Kleine-König <[email protected]> |
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Description: |
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Read-only value reporting if the watchdog of the siox device is |
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active. "0" means the watchdog is not active and the device is expected to |
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be operational. "1" means the watchdog keeps the device in reset. |
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What: /sys/bus/siox/devices/siox-X-Y/watchdog_errors |
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KernelVersion: 4.16 |
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Contact: Thorsten Scherer <[email protected]>, Uwe Kleine-König <[email protected]> |
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Description: |
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Read-only value reporting the number to time intervals when the |
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watchdog was active. |
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What: /sys/bus/siox/devices/siox-X-Y/outbytes |
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KernelVersion: 4.16 |
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Contact: Thorsten Scherer <[email protected]>, Uwe Kleine-König <[email protected]> |
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Description: |
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Read-only value reporting the outbytes value provided to siox-X/device_add.
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