| What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/operation_mode | |
| Date: March 2010 | |
| Contact: Bruno Prémont <bonbons@linux-vserver.org> | |
| Description: Make it possible to switch the PicoLCD device between LCD | |
| (firmware) and bootloader (flasher) operation modes. | |
| Reading: returns list of available modes, the active mode being | |
| enclosed in brackets ('[' and ']') | |
| Writing: causes operation mode switch. Permitted values are | |
| the non-active mode names listed when read. | |
| Note: when switching mode the current PicoLCD HID device gets | |
| disconnected and reconnects after above delay (see attribute | |
| operation_mode_delay for its value). | |
| What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/operation_mode_delay | |
| Date: April 2010 | |
| Contact: Bruno Prémont <bonbons@linux-vserver.org> | |
| Description: Delay PicoLCD waits before restarting in new mode when | |
| operation_mode has changed. | |
| Reading/Writing: It is expressed in ms and permitted range is | |
| 0..30000ms. | |
| What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/fb_update_rate | |
| Date: March 2010 | |
| Contact: Bruno Prémont <bonbons@linux-vserver.org> | |
| Description: Make it possible to adjust defio refresh rate. | |
| Reading: returns list of available refresh rates (expressed in Hz), | |
| the active refresh rate being enclosed in brackets ('[' and ']') | |
| Writing: accepts new refresh rate expressed in integer Hz | |
| within permitted rates. | |
| Note: As device can barely do 2 complete refreshes a second | |
| it only makes sense to adjust this value if only one or two | |
| tiles get changed and it's not appropriate to expect the application | |
| to flush it's tiny changes explicitely at higher than default rate. | |